SGP/EBBR/E26 - Temperature from Left T/RH Probe Incorrect

The temperature from the left T/RH probe went offscale frequently.  This
temperature is used in the calculation of the vapor pressure.  Therefore,
top and bottom Thum measurements, left Thum, top and bottom vapor pressure 
measurements, vapor pressure gradients, and the resulting latent and 
sensible heat fluxes and bowen ratio were frequently incorrect for the 
period stated.

• vapor_pressure_bottom
• temp_trh_top
• bowen_ratio
• Heat flux, latent, at 1.5-m height, 30-min intervals(latent_heat_flux)
• temp_trh_bottom
• Heat flux, sensible, at 1.5-m height, 30-min intervals(sensible_heat_flux)
• vapor_pressure_top

• temp_trh_left_rr

• temp_trh_top
• temp_trh_bottom
• vapor_pressure_bottom
• vapor_pressure_top

SGP/EBBR/E26 - Left T/RH Probe Temperature Data Incorrect

Left T/RH probe temperature is frequently offscale during the period.
Examine the data (compare with the the T/RH right temperature) to determine
which times are incorrect.  Replacement of the probe on 29 June 1999 
solved the problem.

Affected data are:

5 minute:  tair_bot, tair_top
15 minute: tair_l
30 minute: tair_bot, tair_top, e, h, bowen

• temp_air_bottom
• bowen_ratio
• Heat flux, latent, at 1.5-m height, 30-min intervals(latent_heat_flux)
• temp_air_top
• Heat flux, sensible, at 1.5-m height, 30-min intervals(sensible_heat_flux)

• temp_air_left

• temp_air_top
• temp_air_bottom

SGP/EBBR/E26 - Right Aspirator Not Working

The right aspirator fan did not work during the period.

The following values were therefore incorrect:

5 minute:  tair_top, tair_bot, thum_top. thum_bot, hum_top, hum_bot,
           vp_top, vp_bot
15 minute: rr_thum_l, mv_hum_l, tair_l
30 minute: tair_top, tair_bot, thum_top. thum_bot, hum_top, hum_bot,
           vp_top, vp_bot, e, h, bowen

• temp_air_bottom
• temp_trh_top
• bowen_ratio
• rh_top_fraction
• rh_bottom_fraction
• Heat flux, latent, at 1.5-m height, 30-min intervals(latent_heat_flux)
• temp_air_top
• temp_trh_bottom
• vapor_pressure_top
• Heat flux, sensible, at 1.5-m height, 30-min intervals(sensible_heat_flux)
• vapor_pressure_bottom

• rh_left_mv
• temp_trh_left_rr
• temp_air_left

• temp_trh_top
• temp_trh_bottom
• temp_air_top
• rh_top_fraction
• rh_bottom_fraction
• vapor_pressure_top
• vapor_pressure_bottom
• temp_air_bottom

SGP/EBBR - EBBR E9 Anemometer Frozen, Wind Speed Incorrect

The anemometer cups were frozen stalled.

The following values were therefore incorrect:

5 minute:  wind_s, res_ws
15 minute: wind_s
30 minute: wind_s, res_ws

• Wind speed, lower, 1-min avg(wspd_arith_mean)
• Wind speed vector mean(wspd_vec_mean)

• Wind speed, lower, 1-min avg(wspd_arith_mean)

• Wind speed vector mean(wspd_vec_mean)
• Wind speed, lower, 1-min avg(wspd_arith_mean)

SGP/EBBR/E26 - Anemometer Not Working, Wind Speed Incorrect

The anemometer was not working during this period.

The following values were therefore incorrect:

5 minute:  wind_s, res_ws
15 minute: wind_s
30 minute: wind_s, res_ws

• Wind speed, lower, 1-min avg(wspd_arith_mean)
• Wind speed vector mean(wspd_vec_mean)

• Wind speed, lower, 1-min avg(wspd_arith_mean)

• Wind speed, lower, 1-min avg(wspd_arith_mean)
• Wind speed vector mean(wspd_vec_mean)

SGP/EBBR/26 - Low Battery Condition

When battery voltage was less than 10.4 V DC during this period, all
data should be considered to be incorrect.  The cause of the problem
was a broken trace on J-panel #3.

• Wind speed vector mean(wspd_vec_mean)
• rh_top_fraction
• Wind speed, lower, 1-min avg(wspd_arith_mean)
• Heat flux, latent, at 1.5-m height, 30-min intervals(latent_heat_flux)
• vapor_pressure_top
• vapor_pressure_bottom
• corr_soil_heat_flow_4
• corr_soil_heat_flow_3
• corr_soil_heat_flow_2
• corr_soil_heat_flow_1
• temp_reference
• corr_soil_heat_flow_5
• wdir_vec_std
• temp_air_top
• surface_soil_heat_flux_5
• soil_moisture_5
• surface_soil_heat_flux_3
• surface_soil_heat_flux_4
• soil_moisture_1
• soil_moisture_2
• soil_moisture_3
• soil_moisture_4
• temp_trh_top
• rh_bottom_fraction
• home_signal_15
• surface_soil_heat_flux_2
• surface_soil_heat_flux_1
• lon
• Heat flux, sensible, at 1.5-m height, 30-min intervals(sensible_heat_flux)
• Average soil heat flow at the surface(surface_soil_heat_flux_avg)
• Radiation, net(net_radiation)
• soil_heat_capacity_5
• soil_heat_capacity_4
• soil_heat_capacity_2
• soil_heat_capacity_3
• bowen_ratio
• soil_heat_capacity_1
• home_signal_30
• lat
• soil_temp_5
• soil_temp_4
• soil_heat_flow_3
• soil_heat_flow_2
• soil_temp_3
• soil_heat_flow_1
• soil_temp_2
• soil_temp_1
• soil_heat_flow_5
• soil_heat_flow_4
• temp_air_bottom
• Wind direction, vector, lower, 1-min avg(wdir_vec_mean)
• energy_storage_change_1
• energy_storage_change_2
• energy_storage_change_3
• time_offset
• energy_storage_change_4
• energy_storage_change_5
• temp_trh_bottom
• alt
• Barometric Pressure(atmos_pressure)
• base_time

• wdir_vec_mean_mv
• soil_heat_flow_4_mv
• soil_moisture_2_r
• soil_heat_flow_3_mv
• soil_temp_1_rr
• soil_heat_flow_2_mv
• temp_trh_right_rr
• battery_voltage
• lon
• soil_temp_3_rr
• soil_moisture_4_r
• soil_heat_flow_1_mv
• soil_moisture_1_r
• soil_temp_4_rr
• temp_trh_left_rr
• lat
• temp_air_left
• alt
• rh_right_mv
• soil_moisture_3_r
• home_signal
• temp_air_right
• rh_left_mv
• soil_temp_5_rr
• soil_heat_flow_5_mv
• temp_reference_rr
• time_offset
• soil_moisture_5_r
• base_time
• soil_temp_2_rr
• Wind speed, lower, 1-min avg(wspd_arith_mean)
• atmos_pressure_mv
• net_radiation_mv

• temp_trh_bottom
• lon
• Wind speed, lower, 1-min avg(wspd_arith_mean)
• wdir_vec_std
• rh_top_fraction
• home_signal
• Barometric Pressure(atmos_pressure)
• time_offset
• rh_bottom_fraction
• temp_reference
• Wind direction, vector, lower, 1-min avg(wdir_vec_mean)
• temp_trh_top
• temp_air_top
• Wind speed vector mean(wspd_vec_mean)
• temp_air_bottom
• vapor_pressure_bottom
• alt
• vapor_pressure_top
• Radiation, net(net_radiation)
• lat
• base_time

SGP/EBBR - EBBR E9 Net Radiation Incorrect

The net radiometer top dome was broken and water had entered.  Net 
radiation values are therefore incorrect during the period.

The affected data are:

5 minute:  q
15 minute: mv_q
30 minute: q, h, e

• Radiation, net(net_radiation)
• Heat flux, sensible, at 1.5-m height, 30-min intervals(sensible_heat_flux)
• Heat flux, latent, at 1.5-m height, 30-min intervals(latent_heat_flux)

• net_radiation_mv

• Radiation, net(net_radiation)

SGP/EBBR/E26 - Net Radiation Incorrect

The net radiometer top dome was broken and water had entered.  Net 
radiation values are therefore incorrect during the period.

The affected data are:

5 minute:  q
15 minute: mv_q
30 minute: q, h, e

• Heat flux, latent, at 1.5-m height, 30-min intervals(latent_heat_flux)
• Radiation, net(net_radiation)
• Heat flux, sensible, at 1.5-m height, 30-min intervals(sensible_heat_flux)

• net_radiation_mv

• Radiation, net(net_radiation)

SGP/EBBR/E26 - Reprocess Soil Moisture Off-Scale

During numerous periods within the days listed above, individual soil
moisture probes indicate small positive or else negative values when
soil moisture is high (greater than 35%).  This situation has occured
since the present EBBR unit was installed on 17 July 1996.  The cause
of the problem is inadequate range in the calibration curve equation.
Cement soil is somewhat unique amongst the EBBR sites, as the soil is
very sandy and porous; it can hold a larger amount of water per volume
than the other soils.  This high a soil moisture cannot be obtained with
the calibration soil used by REBS.  Therefore, the soil moisture equations
need to be manipulated to allow larger soil moistures to be calculated.
Much of the data from January 1998 is corrupted by this problem,
making changes in the equations prudent.

The soil moisture data must be inspected by the data user to see when
soil moisture values for one or more probes is inconsistent with the
others.

Recalculation of ave_shf, e, and h must be made using only the soil
moisture sets with correct soil moisture values.
Affected data values are (# for probe number):

15 minute: rr_sm#

30 minute: sm#, c_shf#, cs#, ces#, g#, ave_shf, e, h

Sensible, latent, and soil heat fluxes can be recalculated using the soil
probe sets that provide correct data.  For example, if soil moisture 2 is
incorrect,

ave_shf = (g1 + g3 + g4 + g5)/4

e = -(q + ave_shf)/(1 +bowen)

h = -(e + ave_shf +q),


If soil moisture 2 and 4 are incorrect,

ave_shf = (g1 + g3 + g5)/3

e = -(q + ave_shf)/(1 +bowen)

h = -(e + ave_shf +q),


If soil moisture 2, 4, and 5 are incorrect,

ave_shf = (g1 + g3)/2

e = -(q + ave_shf)/(1 +bowen)

h = -(e + ave_shf +q),

etc.

On 5 May 1998 at 1815 GMT a calibration coefficient was changed in the CR10
program as a result of a BCR by the mentor.  This coefficient has helped
reduce the least severe problems but has not eliminated problems from
large negative soil moistures measured even once during the integration
period.  However, now the incorrect average soil heat flow, latent heat
flux, and sensible heat flux are so large, negative or positive, that they
cannot be mistaken as being correct. 

The EBBR unit was replaced with a recalibrated system on 1 April 1999.
The previous unit experienced soil moisture problems the entire time
(almost 3 years) that the system was installed because of the inadequacy
of the soil moisture sensor calibrations.

• Average soil heat flow at the surface(surface_soil_heat_flux_avg)
• energy_storage_change_1
• energy_storage_change_2
• energy_storage_change_3
• energy_storage_change_4
• energy_storage_change_5
• surface_soil_heat_flux_5
• soil_moisture_5
• surface_soil_heat_flux_3
• surface_soil_heat_flux_4
• soil_moisture_1
• soil_heat_capacity_5
• soil_moisture_2
• soil_heat_capacity_4
• soil_moisture_3
• soil_moisture_4
• soil_heat_capacity_2
• soil_heat_capacity_3
• soil_heat_capacity_1
• Heat flux, latent, at 1.5-m height, 30-min intervals(latent_heat_flux)
• surface_soil_heat_flux_2
• surface_soil_heat_flux_1
• Heat flux, sensible, at 1.5-m height, 30-min intervals(sensible_heat_flux)
• corr_soil_heat_flow_4
• corr_soil_heat_flow_3
• corr_soil_heat_flow_2
• corr_soil_heat_flow_1
• corr_soil_heat_flow_5

• soil_moisture_1_r
• soil_moisture_5_r
• soil_moisture_3_r
• soil_moisture_2_r
• soil_moisture_4_r

SGP/EBBR/E26 - EBBR E26 Left Aspirator Not Working

The data is suspect because of inadequate aspiration for the sensors
in the left aspirated radiation shield.

• temp_air_bottom
• temp_trh_top
• rh_top_fraction
• bowen_ratio
• rh_bottom_fraction
• Heat flux, latent, at 1.5-m height, 30-min intervals(latent_heat_flux)
• temp_air_top
• temp_trh_bottom
• Heat flux, sensible, at 1.5-m height, 30-min intervals(sensible_heat_flux)
• vapor_pressure_top
• vapor_pressure_bottom

• rh_left_mv
• temp_trh_left_rr
• temp_air_left

• temp_trh_top
• temp_trh_bottom
• temp_air_top
• rh_top_fraction
• rh_bottom_fraction
• vapor_pressure_top
• vapor_pressure_bottom
• temp_air_bottom

SGP/EBBR/E26 - EBBR E26 All Data Incorrect

All data was incorrect for an unknown reason.

• Wind speed vector mean(wspd_vec_mean)
• rh_top_fraction
• Wind speed, lower, 1-min avg(wspd_arith_mean)
• Heat flux, latent, at 1.5-m height, 30-min intervals(latent_heat_flux)
• vapor_pressure_top
• vapor_pressure_bottom
• corr_soil_heat_flow_4
• corr_soil_heat_flow_3
• corr_soil_heat_flow_2
• corr_soil_heat_flow_1
• temp_reference
• corr_soil_heat_flow_5
• wdir_vec_std
• temp_air_top
• soil_moisture_5
• surface_soil_heat_flux_5
• surface_soil_heat_flux_3
• surface_soil_heat_flux_4
• soil_moisture_1
• soil_moisture_2
• soil_moisture_3
• soil_moisture_4
• temp_trh_top
• rh_bottom_fraction
• home_signal_15
• surface_soil_heat_flux_2
• surface_soil_heat_flux_1
• Heat flux, sensible, at 1.5-m height, 30-min intervals(sensible_heat_flux)
• Average soil heat flow at the surface(surface_soil_heat_flux_avg)
• Radiation, net(net_radiation)
• soil_heat_capacity_5
• soil_heat_capacity_4
• soil_heat_capacity_2
• soil_heat_capacity_3
• bowen_ratio
• home_signal_30
• soil_heat_capacity_1
• soil_temp_5
• soil_heat_flow_3
• soil_temp_4
• soil_temp_3
• soil_heat_flow_2
• soil_temp_2
• soil_heat_flow_1
• soil_temp_1
• soil_heat_flow_5
• soil_heat_flow_4
• temp_air_bottom
• Wind direction, vector, lower, 1-min avg(wdir_vec_mean)
• energy_storage_change_1
• energy_storage_change_2
• energy_storage_change_3
• energy_storage_change_4
• energy_storage_change_5
• temp_trh_bottom
• Barometric Pressure(atmos_pressure)

• wdir_vec_mean_mv
• soil_heat_flow_4_mv
• soil_moisture_2_r
• soil_heat_flow_3_mv
• soil_temp_1_rr
• temp_trh_right_rr
• soil_heat_flow_2_mv
• battery_voltage
• soil_temp_3_rr
• soil_moisture_4_r
• soil_heat_flow_1_mv
• soil_moisture_1_r
• soil_temp_4_rr
• temp_trh_left_rr
• temp_air_left
• rh_right_mv
• soil_moisture_3_r
• home_signal
• temp_air_right
• rh_left_mv
• soil_temp_5_rr
• soil_heat_flow_5_mv
• temp_reference_rr
• soil_moisture_5_r
• soil_temp_2_rr
• Wind speed, lower, 1-min avg(wspd_arith_mean)
• atmos_pressure_mv
• net_radiation_mv

• temp_trh_bottom
• Wind speed, lower, 1-min avg(wspd_arith_mean)
• wdir_vec_std
• rh_top_fraction
• home_signal
• Barometric Pressure(atmos_pressure)
• rh_bottom_fraction
• temp_reference
• Wind direction, vector, lower, 1-min avg(wdir_vec_mean)
• temp_trh_top
• temp_air_top
• Wind speed vector mean(wspd_vec_mean)
• temp_air_bottom
• vapor_pressure_bottom
• vapor_pressure_top
• Radiation, net(net_radiation)

SGP/EBBR/E26 - All Data Incorrect

All data wqas incorrect for an unknown reason.

• Wind speed vector mean(wspd_vec_mean)
• rh_top_fraction
• Wind speed, lower, 1-min avg(wspd_arith_mean)
• Heat flux, latent, at 1.5-m height, 30-min intervals(latent_heat_flux)
• vapor_pressure_top
• vapor_pressure_bottom
• corr_soil_heat_flow_4
• corr_soil_heat_flow_3
• corr_soil_heat_flow_2
• corr_soil_heat_flow_1
• temp_reference
• corr_soil_heat_flow_5
• wdir_vec_std
• temp_air_top
• soil_moisture_5
• surface_soil_heat_flux_5
• surface_soil_heat_flux_3
• surface_soil_heat_flux_4
• soil_moisture_1
• soil_moisture_2
• soil_moisture_3
• soil_moisture_4
• temp_trh_top
• rh_bottom_fraction
• home_signal_15
• surface_soil_heat_flux_2
• surface_soil_heat_flux_1
• Heat flux, sensible, at 1.5-m height, 30-min intervals(sensible_heat_flux)
• Average soil heat flow at the surface(surface_soil_heat_flux_avg)
• Radiation, net(net_radiation)
• soil_heat_capacity_5
• soil_heat_capacity_4
• soil_heat_capacity_2
• soil_heat_capacity_3
• bowen_ratio
• home_signal_30
• soil_heat_capacity_1
• soil_temp_5
• soil_heat_flow_3
• soil_temp_4
• soil_temp_3
• soil_heat_flow_2
• soil_temp_2
• soil_heat_flow_1
• soil_temp_1
• soil_heat_flow_5
• soil_heat_flow_4
• temp_air_bottom
• Wind direction, vector, lower, 1-min avg(wdir_vec_mean)
• energy_storage_change_1
• energy_storage_change_2
• energy_storage_change_3
• energy_storage_change_4
• energy_storage_change_5
• temp_trh_bottom
• Barometric Pressure(atmos_pressure)

• wdir_vec_mean_mv
• soil_heat_flow_4_mv
• soil_moisture_2_r
• soil_heat_flow_3_mv
• soil_temp_1_rr
• temp_trh_right_rr
• soil_heat_flow_2_mv
• battery_voltage
• soil_temp_3_rr
• soil_moisture_4_r
• soil_heat_flow_1_mv
• soil_moisture_1_r
• soil_temp_4_rr
• temp_trh_left_rr
• temp_air_left
• rh_right_mv
• soil_moisture_3_r
• home_signal
• temp_air_right
• rh_left_mv
• soil_temp_5_rr
• soil_heat_flow_5_mv
• temp_reference_rr
• soil_moisture_5_r
• soil_temp_2_rr
• Wind speed, lower, 1-min avg(wspd_arith_mean)
• atmos_pressure_mv
• net_radiation_mv

• temp_trh_bottom
• Wind speed, lower, 1-min avg(wspd_arith_mean)
• wdir_vec_std
• rh_top_fraction
• home_signal
• Barometric Pressure(atmos_pressure)
• rh_bottom_fraction
• temp_reference
• Wind direction, vector, lower, 1-min avg(wdir_vec_mean)
• temp_trh_top
• temp_air_top
• Wind speed vector mean(wspd_vec_mean)
• temp_air_bottom
• vapor_pressure_bottom
• vapor_pressure_top
• Radiation, net(net_radiation)

SGP/EBBR/E26 - All Data Incorrect

Data was incorrect because of Preventative Maintenance activities.

• Wind speed vector mean(wspd_vec_mean)
• rh_top_fraction
• Wind speed, lower, 1-min avg(wspd_arith_mean)
• Heat flux, latent, at 1.5-m height, 30-min intervals(latent_heat_flux)
• vapor_pressure_top
• vapor_pressure_bottom
• corr_soil_heat_flow_4
• corr_soil_heat_flow_3
• corr_soil_heat_flow_2
• corr_soil_heat_flow_1
• temp_reference
• corr_soil_heat_flow_5
• wdir_vec_std
• temp_air_top
• soil_moisture_5
• surface_soil_heat_flux_5
• surface_soil_heat_flux_3
• surface_soil_heat_flux_4
• soil_moisture_1
• soil_moisture_2
• soil_moisture_3
• soil_moisture_4
• temp_trh_top
• rh_bottom_fraction
• home_signal_15
• surface_soil_heat_flux_2
• surface_soil_heat_flux_1
• Heat flux, sensible, at 1.5-m height, 30-min intervals(sensible_heat_flux)
• Average soil heat flow at the surface(surface_soil_heat_flux_avg)
• Radiation, net(net_radiation)
• soil_heat_capacity_5
• soil_heat_capacity_4
• soil_heat_capacity_2
• soil_heat_capacity_3
• bowen_ratio
• soil_heat_capacity_1
• home_signal_30
• soil_temp_5
• soil_heat_flow_3
• soil_temp_4
• soil_temp_3
• soil_heat_flow_2
• soil_temp_2
• soil_heat_flow_1
• soil_temp_1
• soil_heat_flow_5
• soil_heat_flow_4
• temp_air_bottom
• Wind direction, vector, lower, 1-min avg(wdir_vec_mean)
• energy_storage_change_1
• energy_storage_change_2
• energy_storage_change_3
• energy_storage_change_4
• energy_storage_change_5
• temp_trh_bottom
• Barometric Pressure(atmos_pressure)

• wdir_vec_mean_mv
• soil_heat_flow_4_mv
• soil_moisture_2_r
• soil_heat_flow_3_mv
• soil_temp_1_rr
• temp_trh_right_rr
• soil_heat_flow_2_mv
• battery_voltage
• soil_temp_3_rr
• soil_moisture_4_r
• soil_heat_flow_1_mv
• soil_moisture_1_r
• soil_temp_4_rr
• temp_trh_left_rr
• temp_air_left
• rh_right_mv
• soil_moisture_3_r
• home_signal
• temp_air_right
• rh_left_mv
• soil_temp_5_rr
• soil_heat_flow_5_mv
• temp_reference_rr
• soil_moisture_5_r
• soil_temp_2_rr
• Wind speed, lower, 1-min avg(wspd_arith_mean)
• atmos_pressure_mv
• net_radiation_mv

• temp_trh_bottom
• Wind speed, lower, 1-min avg(wspd_arith_mean)
• wdir_vec_std
• rh_top_fraction
• home_signal
• Barometric Pressure(atmos_pressure)
• rh_bottom_fraction
• temp_reference
• Wind direction, vector, lower, 1-min avg(wdir_vec_mean)
• temp_trh_top
• temp_air_top
• Wind speed vector mean(wspd_vec_mean)
• temp_air_bottom
• vapor_pressure_bottom
• vapor_pressure_top
• Radiation, net(net_radiation)

SGP/EBBR/E26 - Low Battery Voltage Causes Incorrect Data

Battery voltage below about 10.5 volts DC caused a number of the
EBBR sensors to not measure correctly.

• Average soil heat flow at the surface(surface_soil_heat_flux_avg)
• energy_storage_change_1
• energy_storage_change_2
• energy_storage_change_3
• energy_storage_change_4
• energy_storage_change_5
• surface_soil_heat_flux_5
• surface_soil_heat_flux_3
• surface_soil_heat_flux_4
• soil_heat_capacity_5
• soil_heat_capacity_4
• soil_heat_capacity_2
• soil_heat_capacity_3
• home_signal_30
• soil_heat_capacity_1
• Heat flux, latent, at 1.5-m height, 30-min intervals(latent_heat_flux)
• home_signal_15
• surface_soil_heat_flux_2
• soil_temp_5
• surface_soil_heat_flux_1
• soil_temp_4
• soil_heat_flow_3
• soil_heat_flow_2
• soil_temp_3
• soil_heat_flow_1
• soil_temp_2
• soil_temp_1
• soil_heat_flow_5
• Heat flux, sensible, at 1.5-m height, 30-min intervals(sensible_heat_flux)
• soil_heat_flow_4
• corr_soil_heat_flow_4
• corr_soil_heat_flow_3
• corr_soil_heat_flow_2
• corr_soil_heat_flow_1
• corr_soil_heat_flow_5

• soil_heat_flow_4_mv
• soil_temp_4_rr
• soil_temp_5_rr
• soil_heat_flow_5_mv
• soil_heat_flow_2_mv
• soil_temp_3_rr
• home_signal
• soil_temp_2_rr
• soil_heat_flow_3_mv
• soil_temp_1_rr
• soil_heat_flow_1_mv

• home_signal

SGP/EBBR/E26 - Low Battery Voltage Causes Incorrect Data

Battery voltage less than 10.5 volts DC causes some
sensors to measure incorrectly.

• Average soil heat flow at the surface(surface_soil_heat_flux_avg)
• energy_storage_change_1
• energy_storage_change_2
• energy_storage_change_3
• energy_storage_change_4
• energy_storage_change_5
• surface_soil_heat_flux_5
• surface_soil_heat_flux_3
• surface_soil_heat_flux_4
• soil_heat_capacity_5
• soil_heat_capacity_4
• soil_heat_capacity_2
• soil_heat_capacity_3
• home_signal_30
• soil_heat_capacity_1
• Heat flux, latent, at 1.5-m height, 30-min intervals(latent_heat_flux)
• home_signal_15
• surface_soil_heat_flux_2
• soil_temp_5
• surface_soil_heat_flux_1
• soil_heat_flow_3
• soil_temp_4
• soil_heat_flow_2
• soil_temp_3
• soil_heat_flow_1
• soil_temp_2
• soil_temp_1
• soil_heat_flow_5
• Heat flux, sensible, at 1.5-m height, 30-min intervals(sensible_heat_flux)
• soil_heat_flow_4
• corr_soil_heat_flow_4
• corr_soil_heat_flow_3
• corr_soil_heat_flow_2
• corr_soil_heat_flow_1
• corr_soil_heat_flow_5

• soil_heat_flow_4_mv
• soil_temp_4_rr
• soil_temp_5_rr
• soil_heat_flow_5_mv
• soil_heat_flow_2_mv
• soil_temp_3_rr
• home_signal
• soil_temp_2_rr
• soil_heat_flow_3_mv
• soil_heat_flow_1_mv
• soil_temp_1_rr

• home_signal

SGP/EBBR/E26 - Low Battery Voltage Causes Incorrect Data

Battery voltage less than 10.5 volts DC causes
some sensors to measure incorrectly.

• Average soil heat flow at the surface(surface_soil_heat_flux_avg)
• energy_storage_change_1
• energy_storage_change_2
• energy_storage_change_3
• energy_storage_change_4
• energy_storage_change_5
• surface_soil_heat_flux_5
• surface_soil_heat_flux_3
• surface_soil_heat_flux_4
• soil_heat_capacity_5
• soil_heat_capacity_4
• soil_heat_capacity_2
• soil_heat_capacity_3
• home_signal_30
• soil_heat_capacity_1
• home_signal_15
• Heat flux, latent, at 1.5-m height, 30-min intervals(latent_heat_flux)
• surface_soil_heat_flux_2
• soil_temp_5
• surface_soil_heat_flux_1
• soil_temp_4
• soil_heat_flow_3
• soil_heat_flow_2
• soil_temp_3
• soil_heat_flow_1
• soil_temp_2
• soil_temp_1
• soil_heat_flow_5
• soil_heat_flow_4
• Heat flux, sensible, at 1.5-m height, 30-min intervals(sensible_heat_flux)
• corr_soil_heat_flow_4
• corr_soil_heat_flow_3
• corr_soil_heat_flow_2
• corr_soil_heat_flow_1
• corr_soil_heat_flow_5

• soil_heat_flow_4_mv
• soil_temp_4_rr
• soil_temp_5_rr
• soil_heat_flow_5_mv
• soil_heat_flow_2_mv
• soil_temp_3_rr
• home_signal
• soil_temp_2_rr
• soil_heat_flow_3_mv
• soil_temp_1_rr
• soil_heat_flow_1_mv

• home_signal

SGP/EBBR/E26 - Low Battery Voltage Causes Incorrect Data

Battery voltage less than 10.5 volts DC causes
some sensors to make incorrect measurements.

• Average soil heat flow at the surface(surface_soil_heat_flux_avg)
• energy_storage_change_1
• energy_storage_change_2
• energy_storage_change_3
• energy_storage_change_4
• energy_storage_change_5
• surface_soil_heat_flux_5
• surface_soil_heat_flux_3
• surface_soil_heat_flux_4
• soil_heat_capacity_5
• soil_heat_capacity_4
• soil_heat_capacity_2
• soil_heat_capacity_3
• home_signal_30
• soil_heat_capacity_1
• Heat flux, latent, at 1.5-m height, 30-min intervals(latent_heat_flux)
• home_signal_15
• surface_soil_heat_flux_2
• surface_soil_heat_flux_1
• soil_temp_5
• soil_temp_4
• soil_heat_flow_3
• soil_heat_flow_2
• soil_temp_3
• soil_heat_flow_1
• soil_temp_2
• soil_temp_1
• soil_heat_flow_5
• Heat flux, sensible, at 1.5-m height, 30-min intervals(sensible_heat_flux)
• soil_heat_flow_4
• corr_soil_heat_flow_4
• corr_soil_heat_flow_3
• corr_soil_heat_flow_2
• corr_soil_heat_flow_1
• corr_soil_heat_flow_5

• soil_heat_flow_4_mv
• soil_temp_4_rr
• soil_temp_5_rr
• soil_heat_flow_5_mv
• soil_heat_flow_2_mv
• soil_temp_3_rr
• home_signal
• soil_temp_2_rr
• soil_heat_flow_3_mv
• soil_temp_1_rr
• soil_heat_flow_1_mv

• home_signal

SGP/EBBR/E26 - All Data Incorrect

All data was incorrect for an unknown reason.

• Wind speed vector mean(wspd_vec_mean)
• rh_top_fraction
• Wind speed, lower, 1-min avg(wspd_arith_mean)
• Heat flux, latent, at 1.5-m height, 30-min intervals(latent_heat_flux)
• vapor_pressure_top
• vapor_pressure_bottom
• corr_soil_heat_flow_4
• corr_soil_heat_flow_3
• corr_soil_heat_flow_2
• corr_soil_heat_flow_1
• temp_reference
• corr_soil_heat_flow_5
• wdir_vec_std
• temp_air_top
• surface_soil_heat_flux_5
• soil_moisture_5
• surface_soil_heat_flux_3
• surface_soil_heat_flux_4
• soil_moisture_1
• soil_moisture_2
• soil_moisture_3
• soil_moisture_4
• temp_trh_top
• rh_bottom_fraction
• home_signal_15
• surface_soil_heat_flux_2
• surface_soil_heat_flux_1
• Heat flux, sensible, at 1.5-m height, 30-min intervals(sensible_heat_flux)
• Average soil heat flow at the surface(surface_soil_heat_flux_avg)
• Radiation, net(net_radiation)
• soil_heat_capacity_5
• soil_heat_capacity_4
• soil_heat_capacity_2
• soil_heat_capacity_3
• bowen_ratio
• soil_heat_capacity_1
• home_signal_30
• soil_temp_5
• soil_temp_4
• soil_heat_flow_3
• soil_heat_flow_2
• soil_temp_3
• soil_temp_2
• soil_heat_flow_1
• soil_temp_1
• soil_heat_flow_5
• soil_heat_flow_4
• temp_air_bottom
• Wind direction, vector, lower, 1-min avg(wdir_vec_mean)
• energy_storage_change_1
• energy_storage_change_2
• energy_storage_change_3
• energy_storage_change_4
• energy_storage_change_5
• temp_trh_bottom
• Barometric Pressure(atmos_pressure)

• wdir_vec_mean_mv
• soil_heat_flow_4_mv
• soil_moisture_2_r
• soil_heat_flow_3_mv
• soil_temp_1_rr
• temp_trh_right_rr
• soil_heat_flow_2_mv
• battery_voltage
• soil_temp_3_rr
• soil_moisture_4_r
• soil_heat_flow_1_mv
• soil_moisture_1_r
• soil_temp_4_rr
• temp_trh_left_rr
• temp_air_left
• rh_right_mv
• soil_moisture_3_r
• home_signal
• temp_air_right
• rh_left_mv
• soil_temp_5_rr
• soil_heat_flow_5_mv
• temp_reference_rr
• soil_moisture_5_r
• soil_temp_2_rr
• Wind speed, lower, 1-min avg(wspd_arith_mean)
• atmos_pressure_mv
• net_radiation_mv

• temp_trh_bottom
• Wind speed, lower, 1-min avg(wspd_arith_mean)
• wdir_vec_std
• rh_top_fraction
• home_signal
• Barometric Pressure(atmos_pressure)
• rh_bottom_fraction
• temp_reference
• Wind direction, vector, lower, 1-min avg(wdir_vec_mean)
• temp_trh_top
• temp_air_top
• Wind speed vector mean(wspd_vec_mean)
• temp_air_bottom
• vapor_pressure_bottom
• vapor_pressure_top
• Radiation, net(net_radiation)

SGP/EBBR/E26 - All Data Incorrect

All data was incorrect for an unknown reason.

• Wind speed vector mean(wspd_vec_mean)
• rh_top_fraction
• Wind speed, lower, 1-min avg(wspd_arith_mean)
• Heat flux, latent, at 1.5-m height, 30-min intervals(latent_heat_flux)
• vapor_pressure_top
• vapor_pressure_bottom
• corr_soil_heat_flow_4
• corr_soil_heat_flow_3
• corr_soil_heat_flow_2
• corr_soil_heat_flow_1
• temp_reference
• corr_soil_heat_flow_5
• wdir_vec_std
• temp_air_top
• soil_moisture_5
• surface_soil_heat_flux_5
• surface_soil_heat_flux_3
• surface_soil_heat_flux_4
• soil_moisture_1
• soil_moisture_2
• soil_moisture_3
• soil_moisture_4
• temp_trh_top
• rh_bottom_fraction
• home_signal_15
• surface_soil_heat_flux_2
• surface_soil_heat_flux_1
• Heat flux, sensible, at 1.5-m height, 30-min intervals(sensible_heat_flux)
• Average soil heat flow at the surface(surface_soil_heat_flux_avg)
• Radiation, net(net_radiation)
• soil_heat_capacity_5
• soil_heat_capacity_4
• soil_heat_capacity_2
• soil_heat_capacity_3
• bowen_ratio
• soil_heat_capacity_1
• home_signal_30
• soil_temp_5
• soil_heat_flow_3
• soil_temp_4
• soil_temp_3
• soil_heat_flow_2
• soil_temp_2
• soil_heat_flow_1
• soil_temp_1
• soil_heat_flow_5
• soil_heat_flow_4
• temp_air_bottom
• Wind direction, vector, lower, 1-min avg(wdir_vec_mean)
• energy_storage_change_1
• energy_storage_change_2
• energy_storage_change_3
• energy_storage_change_4
• energy_storage_change_5
• temp_trh_bottom
• Barometric Pressure(atmos_pressure)

• wdir_vec_mean_mv
• soil_heat_flow_4_mv
• soil_moisture_2_r
• soil_heat_flow_3_mv
• soil_temp_1_rr
• temp_trh_right_rr
• soil_heat_flow_2_mv
• battery_voltage
• soil_temp_3_rr
• soil_moisture_4_r
• soil_heat_flow_1_mv
• soil_moisture_1_r
• soil_temp_4_rr
• temp_trh_left_rr
• temp_air_left
• rh_right_mv
• soil_moisture_3_r
• home_signal
• temp_air_right
• rh_left_mv
• soil_temp_5_rr
• soil_heat_flow_5_mv
• temp_reference_rr
• soil_moisture_5_r
• soil_temp_2_rr
• Wind speed, lower, 1-min avg(wspd_arith_mean)
• atmos_pressure_mv
• net_radiation_mv

• temp_trh_bottom
• Wind speed, lower, 1-min avg(wspd_arith_mean)
• wdir_vec_std
• rh_top_fraction
• home_signal
• Barometric Pressure(atmos_pressure)
• rh_bottom_fraction
• temp_reference
• Wind direction, vector, lower, 1-min avg(wdir_vec_mean)
• temp_trh_top
• temp_air_top
• Wind speed vector mean(wspd_vec_mean)
• temp_air_bottom
• vapor_pressure_bottom
• vapor_pressure_top
• Radiation, net(net_radiation)

SGP/EBBR/E26 - Left Air Temperature Periodically Incorrect

Left air temperature periodically was incorrect, causing the indicated measurements
to be incorrect.  The user will need to inspect the data to see when the left air
temperature was incorrect (compare left with right air temperature or with the
humidity probe temperature).

• temp_air_bottom
• bowen_ratio
• Heat flux, latent, at 1.5-m height, 30-min intervals(latent_heat_flux)
• temp_air_top
• Heat flux, sensible, at 1.5-m height, 30-min intervals(sensible_heat_flux)

• temp_air_left

• temp_air_top
• temp_air_bottom

SGP/EBBR/E26 - Reference Temperature Incorrect

The reference temperature sensor did not work during the indicated period,
causing the indicated measurements to be incorrect.

• temp_air_bottom
• bowen_ratio
• Heat flux, latent, at 1.5-m height, 30-min intervals(latent_heat_flux)
• temp_air_top
• temp_reference
• Heat flux, sensible, at 1.5-m height, 30-min intervals(sensible_heat_flux)

• temp_air_right
• temp_air_left
• temp_reference_rr

• temp_air_top
• temp_air_bottom
• temp_reference

SGP/EBBR/E26 - Electronics Problem

Incorrect home signal indicates an electronic problem that affected the indicated
measurements; this may have been a multiplexer #2 problem as all sensors affected 
are connected to that multiplexer and no sensors on multiplexer #1 were affected.

• temp_air_bottom
• Average soil heat flow at the surface(surface_soil_heat_flux_avg)
• temp_air_top
• Radiation, net(net_radiation)
• surface_soil_heat_flux_5
• surface_soil_heat_flux_3
• surface_soil_heat_flux_4
• bowen_ratio
• home_signal_30
• Heat flux, latent, at 1.5-m height, 30-min intervals(latent_heat_flux)
• home_signal_15
• surface_soil_heat_flux_2
• surface_soil_heat_flux_1
• soil_heat_flow_3
• soil_heat_flow_2
• soil_heat_flow_1
• soil_heat_flow_5
• soil_heat_flow_4
• Heat flux, sensible, at 1.5-m height, 30-min intervals(sensible_heat_flux)
• corr_soil_heat_flow_4
• corr_soil_heat_flow_3
• corr_soil_heat_flow_2
• corr_soil_heat_flow_1
• temp_reference
• corr_soil_heat_flow_5

• soil_heat_flow_4_mv
• soil_heat_flow_5_mv
• temp_reference_rr
• temp_air_left
• soil_heat_flow_2_mv
• home_signal
• temp_air_right
• soil_heat_flow_3_mv
• soil_heat_flow_1_mv
• net_radiation_mv

• home_signal
• temp_air_top
• temp_air_bottom
• temp_reference
• Radiation, net(net_radiation)

SGP/EBBR/E26 - Soil Heat Flow #5 Incorrect

Soil Heat Flow #5 was incorrect, causing the indicated measurements to be incorrect.

• Average soil heat flow at the surface(surface_soil_heat_flux_avg)
• Heat flux, latent, at 1.5-m height, 30-min intervals(latent_heat_flux)
• surface_soil_heat_flux_5
• soil_heat_flow_5
• corr_soil_heat_flow_5
• Heat flux, sensible, at 1.5-m height, 30-min intervals(sensible_heat_flux)

• soil_heat_flow_5_mv

SGP/EBBR/E26 - Soil Heat Flow #1 Incorrect

Soil Heat Flow #1 was incorrect, causing the indicated measurements to be incorrect.
A broken sensor wire was at fault.

• Average soil heat flow at the surface(surface_soil_heat_flux_avg)
• Heat flux, latent, at 1.5-m height, 30-min intervals(latent_heat_flux)
• surface_soil_heat_flux_1
• soil_heat_flow_1
• corr_soil_heat_flow_1
• Heat flux, sensible, at 1.5-m height, 30-min intervals(sensible_heat_flux)

• soil_heat_flow_1_mv

SGP/EBBR/E26 - Soil Heat Flow #2 Large Negative

Soil Heat Flow #2 was large negative and incorrect for an unknown reason.

• Average soil heat flow at the surface(surface_soil_heat_flux_avg)
• Heat flux, latent, at 1.5-m height, 30-min intervals(latent_heat_flux)
• surface_soil_heat_flux_2
• soil_heat_flow_2
• corr_soil_heat_flow_2
• Heat flux, sensible, at 1.5-m height, 30-min intervals(sensible_heat_flux)

• soil_heat_flow_2_mv

SGP/EBBR/E26 - Left Air Temperature Incorrect

Incorrect left air temperature caused the indicated measurements to be incorrect.

• temp_air_bottom
• bowen_ratio
• Heat flux, latent, at 1.5-m height, 30-min intervals(latent_heat_flux)
• temp_air_top
• Heat flux, sensible, at 1.5-m height, 30-min intervals(sensible_heat_flux)

• temp_air_left

• temp_air_top
• temp_air_bottom

SGP/EBBR/E26 - Wind Speed Iced

The anemometer was frozen stopped by freezing rain.  Indicated data are incorrect.

• Wind speed, lower, 1-min avg(wspd_arith_mean)
• Wind speed vector mean(wspd_vec_mean)

• Wind speed, lower, 1-min avg(wspd_arith_mean)

• Wind speed, lower, 1-min avg(wspd_arith_mean)
• Wind speed vector mean(wspd_vec_mean)

SGP/EBBR/E9 - E9 EBBR Wind Direction Incorrect

The wind direction vane was frozen in one direction by icing during the indicated period.

• Wind speed vector mean(wspd_vec_mean)
• Wind direction, vector, lower, 1-min avg(wdir_vec_mean)
• wdir_vec_std

• wdir_vec_mean_mv

• Wind speed vector mean(wspd_vec_mean)
• Wind direction, vector, lower, 1-min avg(wdir_vec_mean)
• wdir_vec_std

SGP/EBBR/E9 - E9 EBBR Wind Speed Incorrect

The wind speed sensor cups were frozen in place by icing.

• Wind speed, lower, 1-min avg(wspd_arith_mean)
• Wind speed vector mean(wspd_vec_mean)

• Wind speed, lower, 1-min avg(wspd_arith_mean)

• Wind speed vector mean(wspd_vec_mean)
• Wind speed, lower, 1-min avg(wspd_arith_mean)

SGP/EBBR/E9 - E9 EBBR Soil Heat Flow 1 Incorrect

Soil Heat flow sensor #1 produced measurements that were large negative during the 
indicated period.  This was the result of sensor failure.

• Average soil heat flow at the surface(surface_soil_heat_flux_avg)
• soil_heat_flow_1
• Heat flux, sensible, at 1.5-m height, 30-min intervals(sensible_heat_flux)
• corr_soil_heat_flow_1
• Heat flux, latent, at 1.5-m height, 30-min intervals(latent_heat_flux)
• surface_soil_heat_flux_1

• soil_heat_flow_1_mv

SGP/EBBR/E9 - E9 EBBR Soil Heat Capacities Incorrect

Soil Heat Capacities were out-of-range during this period, as reported by
the datalogger. The cause of this is unknown.

Actual values used in the computations of fluxes were okay, as the fluxes were not 
affected.

• soil_heat_capacity_1
• soil_heat_capacity_2
• soil_heat_capacity_3
• soil_heat_capacity_4
• soil_heat_capacity_5

SGP EBBR E26 - Data Suspect, Low Battery Voltage

The data measurements are suspect because of low battery voltage.
Some measurements may be correct, but most are probably incorrect.
Large home signals indicate very low battery voltage is present.

• Wind speed vector mean(wspd_vec_mean)
• rh_top_fraction
• Wind speed, lower, 1-min avg(wspd_arith_mean)
• Heat flux, latent, at 1.5-m height, 30-min intervals(latent_heat_flux)
• vapor_pressure_top
• vapor_pressure_bottom
• corr_soil_heat_flow_4
• corr_soil_heat_flow_3
• corr_soil_heat_flow_2
• corr_soil_heat_flow_1
• temp_reference
• corr_soil_heat_flow_5
• wdir_vec_std
• temp_air_top
• surface_soil_heat_flux_5
• soil_moisture_5
• surface_soil_heat_flux_3
• surface_soil_heat_flux_4
• soil_moisture_1
• soil_moisture_2
• soil_moisture_3
• soil_moisture_4
• temp_trh_top
• rh_bottom_fraction
• home_signal_15
• surface_soil_heat_flux_2
• surface_soil_heat_flux_1
• Heat flux, sensible, at 1.5-m height, 30-min intervals(sensible_heat_flux)
• Average soil heat flow at the surface(surface_soil_heat_flux_avg)
• Radiation, net(net_radiation)
• soil_heat_capacity_5
• soil_heat_capacity_4
• soil_heat_capacity_2
• soil_heat_capacity_3
• bowen_ratio
• soil_heat_capacity_1
• home_signal_30
• soil_temp_5
• soil_heat_flow_3
• soil_temp_4
• soil_temp_3
• soil_heat_flow_2
• soil_temp_2
• soil_heat_flow_1
• soil_temp_1
• soil_heat_flow_5
• soil_heat_flow_4
• temp_air_bottom
• Wind direction, vector, lower, 1-min avg(wdir_vec_mean)
• energy_storage_change_1
• energy_storage_change_2
• energy_storage_change_3
• energy_storage_change_4
• energy_storage_change_5
• temp_trh_bottom
• Barometric Pressure(atmos_pressure)

• wdir_vec_mean_mv
• soil_heat_flow_4_mv
• soil_moisture_2_r
• soil_moisture_4_rr
• soil_heat_flow_3_mv
• soil_temp_1_rr
• soil_moisture_5_rr
• soil_heat_flow_2_mv
• temp_trh_right_rr
• battery_voltage
• soil_temp_3_rr
• soil_moisture_4_r
• soil_moisture_2_rr
• soil_heat_flow_1_mv
• soil_moisture_1_r
• soil_temp_4_rr
• temp_trh_left_rr
• temp_air_left
• rh_right_mv
• soil_moisture_3_r
• soil_moisture_3_rr
• home_signal
• soil_moisture_1_rr
• temp_air_right
• rh_left_mv
• soil_temp_5_rr
• soil_heat_flow_5_mv
• temp_reference_rr
• soil_moisture_5_r
• soil_temp_2_rr
• Wind speed, lower, 1-min avg(wspd_arith_mean)
• atmos_pressure_mv
• net_radiation_mv

• temp_trh_bottom
• Wind speed, lower, 1-min avg(wspd_arith_mean)
• wdir_vec_std
• rh_top_fraction
• home_signal
• Barometric Pressure(atmos_pressure)
• rh_bottom_fraction
• temp_reference
• Wind direction, vector, lower, 1-min avg(wdir_vec_mean)
• temp_trh_top
• temp_air_top
• Wind speed vector mean(wspd_vec_mean)
• temp_air_bottom
• vapor_pressure_bottom
• vapor_pressure_top
• Radiation, net(net_radiation)

• Raw data stream - documentation not supported

SGP EBBR E26 - All Data Incorrect

All data was incorrect during these periods for unknown reasons.
However, this tends to happen during preventative maintenance
visits if sensors have to be changed out or tested and the 
datalogger program is reloaded, or if the battery voltage is low.

• Wind speed vector mean(wspd_vec_mean)
• rh_top_fraction
• Wind speed, lower, 1-min avg(wspd_arith_mean)
• Heat flux, latent, at 1.5-m height, 30-min intervals(latent_heat_flux)
• vapor_pressure_top
• vapor_pressure_bottom
• corr_soil_heat_flow_4
• corr_soil_heat_flow_3
• corr_soil_heat_flow_2
• corr_soil_heat_flow_1
• temp_reference
• corr_soil_heat_flow_5
• wdir_vec_std
• temp_air_top
• soil_moisture_5
• surface_soil_heat_flux_5
• surface_soil_heat_flux_3
• surface_soil_heat_flux_4
• soil_moisture_1
• soil_moisture_2
• soil_moisture_3
• soil_moisture_4
• temp_trh_top
• rh_bottom_fraction
• home_signal_15
• surface_soil_heat_flux_2
• surface_soil_heat_flux_1
• Heat flux, sensible, at 1.5-m height, 30-min intervals(sensible_heat_flux)
• Average soil heat flow at the surface(surface_soil_heat_flux_avg)
• Radiation, net(net_radiation)
• soil_heat_capacity_5
• soil_heat_capacity_4
• soil_heat_capacity_2
• soil_heat_capacity_3
• bowen_ratio
• soil_heat_capacity_1
• home_signal_30
• soil_temp_5
• soil_heat_flow_3
• soil_temp_4
• soil_temp_3
• soil_heat_flow_2
• soil_heat_flow_1
• soil_temp_2
• soil_temp_1
• soil_heat_flow_5
• soil_heat_flow_4
• temp_air_bottom
• Wind direction, vector, lower, 1-min avg(wdir_vec_mean)
• energy_storage_change_1
• energy_storage_change_2
• energy_storage_change_3
• energy_storage_change_4
• energy_storage_change_5
• temp_trh_bottom
• Barometric Pressure(atmos_pressure)

• wdir_vec_mean_mv
• soil_heat_flow_4_mv
• soil_moisture_2_r
• soil_moisture_4_rr
• soil_heat_flow_3_mv
• soil_temp_1_rr
• soil_moisture_5_rr
• soil_heat_flow_2_mv
• temp_trh_right_rr
• battery_voltage
• soil_temp_3_rr
• soil_moisture_4_r
• soil_moisture_2_rr
• soil_heat_flow_1_mv
• soil_moisture_1_r
• soil_temp_4_rr
• temp_trh_left_rr
• temp_air_left
• rh_right_mv
• soil_moisture_3_r
• soil_moisture_3_rr
• home_signal
• soil_moisture_1_rr
• temp_air_right
• rh_left_mv
• soil_temp_5_rr
• soil_heat_flow_5_mv
• temp_reference_rr
• soil_moisture_5_r
• soil_temp_2_rr
• Wind speed, lower, 1-min avg(wspd_arith_mean)
• atmos_pressure_mv
• net_radiation_mv

• temp_trh_bottom
• Wind speed, lower, 1-min avg(wspd_arith_mean)
• wdir_vec_std
• rh_top_fraction
• home_signal
• Barometric Pressure(atmos_pressure)
• rh_bottom_fraction
• temp_reference
• Wind direction, vector, lower, 1-min avg(wdir_vec_mean)
• temp_trh_top
• temp_air_top
• Wind speed vector mean(wspd_vec_mean)
• temp_air_bottom
• vapor_pressure_bottom
• vapor_pressure_top
• Radiation, net(net_radiation)

• Raw data stream - documentation not supported

SGP EBBR E26 - Soil Heat Flow #1 Incorrect

Soil Heat Flow #1 was incorrect because of a bad electronic
connection.  Average surface heat flow, sensible heat flux, and
latent heat flux are incorrect as a result; these can be re-calculated 
by using the remaining correct soil heat flows.

• Average soil heat flow at the surface(surface_soil_heat_flux_avg)
• Heat flux, latent, at 1.5-m height, 30-min intervals(latent_heat_flux)
• surface_soil_heat_flux_1
• soil_heat_flow_1
• corr_soil_heat_flow_1
• Heat flux, sensible, at 1.5-m height, 30-min intervals(sensible_heat_flux)

• soil_heat_flow_1_mv

SGP EBBR E26 - Soil Heat Flow #2 Incorrect

Soil Heat Flow #2 was incorrect.  Average soil heat flow, 
sensible heat flux, and latent heat flux were therefore also
incorrect; these can be re-calculated from the remaining 
correct soil heat flows.

• Average soil heat flow at the surface(surface_soil_heat_flux_avg)
• Heat flux, latent, at 1.5-m height, 30-min intervals(latent_heat_flux)
• surface_soil_heat_flux_2
• soil_heat_flow_2
• corr_soil_heat_flow_2
• Heat flux, sensible, at 1.5-m height, 30-min intervals(sensible_heat_flux)

• soil_heat_flow_2_mv

SGP EBBR E26 - Soil Heat Flow #3 Incorrect

Soil heat Flow #3 was incorrect (large negative).  Therefore
average soil heat flow, sensible heat flux, and latent heat flux were
also incorrect; these can be re-calculated using the remaining
correct soil heat flows.

• Average soil heat flow at the surface(surface_soil_heat_flux_avg)
• Heat flux, latent, at 1.5-m height, 30-min intervals(latent_heat_flux)
• soil_heat_flow_3
• corr_soil_heat_flow_3
• surface_soil_heat_flux_3
• Heat flux, sensible, at 1.5-m height, 30-min intervals(sensible_heat_flux)

• soil_heat_flow_3_mv

SGP EBBR E26 - Soil Moisture #1 Incorrect

Soil Moisture #1 was a constant 33.7 and was incorrect.

Latent and Sensible Heat fluxes were normally minimally affected.

• Average soil heat flow at the surface(surface_soil_heat_flux_avg)
• soil_heat_capacity_1
• Heat flux, latent, at 1.5-m height, 30-min intervals(latent_heat_flux)
• surface_soil_heat_flux_1
• soil_heat_flow_1
• corr_soil_heat_flow_1
• soil_moisture_1
• Heat flux, sensible, at 1.5-m height, 30-min intervals(sensible_heat_flux)

• soil_moisture_1_r
• soil_moisture_1_rr

SGP EBBR E26 - AEM Inbetween, Data Incorrect

While the AEM was inbetween the correct measurement positions the measurements from the 
two levels were incorrect.

The sensible and latent heat fluxes and Bowen ratio were therefore incorrect also.

• temp_air_bottom
• temp_air_top
• temp_trh_bottom
• temp_trh_top
• rh_top_fraction
• bowen_ratio
• rh_bottom_fraction
• Heat flux, latent, at 1.5-m height, 30-min intervals(latent_heat_flux)
• Heat flux, sensible, at 1.5-m height, 30-min intervals(sensible_heat_flux)
• vapor_pressure_top
• vapor_pressure_bottom

• rh_left_mv
• temp_trh_left_rr
• temp_air_left
• temp_trh_right_rr
• rh_right_mv
• temp_air_right

• temp_trh_top
• temp_trh_bottom
• temp_air_top
• temp_air_bottom
• rh_top_fraction
• rh_bottom_fraction
• vapor_pressure_top
• vapor_pressure_bottom

SGP EBBR E26 - Soil Heat Flow #5 Incorrect

Soil Heat Flow #5 was large negative during this period.

Therefore, calculated average soil heat flow, latent heat flux, and sensible heat flux 
were incorrect.  These measurements can be recalculated from the use of measurements from 
only soil heat flow sensors #1-4.

• Average soil heat flow at the surface(surface_soil_heat_flux_avg)
• Heat flux, latent, at 1.5-m height, 30-min intervals(latent_heat_flux)
• surface_soil_heat_flux_5
• soil_heat_flow_5
• Heat flux, sensible, at 1.5-m height, 30-min intervals(sensible_heat_flux)
• corr_soil_heat_flow_5

• soil_heat_flow_5_mv

SGP EBBR E26 - Some Data Incorrect

The reference temperature sensor malfunctioned, causing all associated measurements to be 
incorrect.

• temp_air_bottom
• Average soil heat flow at the surface(surface_soil_heat_flux_avg)
• energy_storage_change_1
• energy_storage_change_2
• energy_storage_change_3
• energy_storage_change_4
• temp_air_top
• energy_storage_change_5
• temp_trh_bottom
• surface_soil_heat_flux_5
• surface_soil_heat_flux_3
• surface_soil_heat_flux_4
• temp_trh_top
• bowen_ratio
• Heat flux, latent, at 1.5-m height, 30-min intervals(latent_heat_flux)
• surface_soil_heat_flux_2
• soil_temp_5
• surface_soil_heat_flux_1
• soil_temp_4
• soil_temp_3
• soil_temp_2
• soil_temp_1
• vapor_pressure_top
• Heat flux, sensible, at 1.5-m height, 30-min intervals(sensible_heat_flux)
• vapor_pressure_bottom
• temp_reference

• soil_temp_4_rr
• soil_temp_5_rr
• temp_reference_rr
• temp_air_left
• soil_temp_3_rr
• soil_temp_2_rr
• temp_air_right
• soil_temp_1_rr

• temp_trh_top
• temp_trh_bottom
• temp_air_top
• temp_air_bottom
• vapor_pressure_top
• temp_reference
• vapor_pressure_bottom

SGP EBBR E26 - Some Data Incorrect

Since soil temperature was not available for the previous half hour, soil energy storage 
could not be calculated properly for the indicated period.  The individual soil heat 
storage from the five soil sets, average soil heat flow, sensible heat flux, and latent heat 
flux are therefore incorrect.

• Average soil heat flow at the surface(surface_soil_heat_flux_avg)
• energy_storage_change_1
• energy_storage_change_2
• Heat flux, latent, at 1.5-m height, 30-min intervals(latent_heat_flux)
• energy_storage_change_3
• energy_storage_change_4
• surface_soil_heat_flux_2
• surface_soil_heat_flux_1
• energy_storage_change_5
• Heat flux, sensible, at 1.5-m height, 30-min intervals(sensible_heat_flux)
• surface_soil_heat_flux_5
• surface_soil_heat_flux_3
• surface_soil_heat_flux_4

SGP EBBR E9 - E9 EBBR Data Incorect During 6 Month Checks

The data was incorrect during the 6 month checks.

• Barometric Pressure(atmos_pressure)
• Heat flux, latent, at 1.5-m height, 30-min intervals(latent_heat_flux)
• temp_trh_top
• soil_heat_flow_5
• soil_heat_flow_2
• soil_heat_flow_1
• vapor_pressure_bottom
• soil_heat_flow_4
• soil_heat_flow_3
• temp_air_bottom
• Wind direction, vector, lower, 1-min avg(wdir_vec_mean)
• surface_soil_heat_flux_4
• surface_soil_heat_flux_5
• surface_soil_heat_flux_2
• surface_soil_heat_flux_3
• surface_soil_heat_flux_1
• rh_bottom_fraction
• corr_soil_heat_flow_1
• corr_soil_heat_flow_2
• corr_soil_heat_flow_3
• corr_soil_heat_flow_4
• corr_soil_heat_flow_5
• Average soil heat flow at the surface(surface_soil_heat_flux_avg)
• bowen_ratio
• Wind speed, lower, 1-min avg(wspd_arith_mean)
• energy_storage_change_1
• energy_storage_change_2
• energy_storage_change_3
• energy_storage_change_4
• soil_temp_4
• soil_temp_5
• energy_storage_change_5
• Wind speed vector mean(wspd_vec_mean)
• soil_temp_3
• soil_temp_2
• soil_temp_1
• Radiation, net(net_radiation)
• rh_top_fraction
• soil_heat_capacity_1
• soil_heat_capacity_2
• soil_heat_capacity_3
• soil_heat_capacity_4
• soil_heat_capacity_5
• wdir_vec_std
• temp_reference
• soil_moisture_1
• soil_moisture_3
• soil_moisture_2
• soil_moisture_5
• soil_moisture_4
• temp_trh_bottom
• vapor_pressure_top
• Heat flux, sensible, at 1.5-m height, 30-min intervals(sensible_heat_flux)
• temp_air_top

• soil_moisture_4_rr
• soil_temp_3_rr
• soil_temp_2_rr
• soil_heat_flow_3_mv
• soil_heat_flow_1_mv
• soil_temp_5_rr
• soil_temp_1_rr
• soil_heat_flow_5_mv
• temp_reference_rr
• Wind speed, lower, 1-min avg(wspd_arith_mean)
• net_radiation_mv
• temp_trh_right_rr
• soil_heat_flow_2_mv
• rh_left_mv
• soil_moisture_3_rr
• soil_heat_flow_4_mv
• soil_temp_4_rr
• atmos_pressure_mv
• rh_right_mv
• wdir_vec_mean_mv
• temp_trh_left_rr
• soil_moisture_1_r
• soil_moisture_2_r
• soil_moisture_5_rr
• soil_moisture_2_rr
• soil_moisture_3_r
• soil_moisture_1_rr
• soil_moisture_4_r
• soil_moisture_5_r
• temp_air_right
• temp_air_left

• temp_reference
• Wind speed, lower, 1-min avg(wspd_arith_mean)
• rh_top_fraction
• Wind direction, vector, lower, 1-min avg(wdir_vec_mean)
• Barometric Pressure(atmos_pressure)
• Wind speed vector mean(wspd_vec_mean)
• temp_trh_top
• rh_bottom_fraction
• temp_air_bottom
• vapor_pressure_top
• temp_trh_bottom
• temp_air_top
• vapor_pressure_bottom
• Radiation, net(net_radiation)
• wdir_vec_std

SGP EBBR E26 - Data Incorrect During 6 Month Checks

The data was incorrect during the 6 month checks.

• Wind speed vector mean(wspd_vec_mean)
• rh_top_fraction
• Wind speed, lower, 1-min avg(wspd_arith_mean)
• Heat flux, latent, at 1.5-m height, 30-min intervals(latent_heat_flux)
• vapor_pressure_top
• vapor_pressure_bottom
• corr_soil_heat_flow_4
• corr_soil_heat_flow_3
• corr_soil_heat_flow_2
• corr_soil_heat_flow_1
• temp_reference
• corr_soil_heat_flow_5
• wdir_vec_std
• temp_air_top
• surface_soil_heat_flux_5
• soil_moisture_5
• surface_soil_heat_flux_3
• surface_soil_heat_flux_4
• soil_moisture_1
• soil_moisture_2
• soil_moisture_3
• soil_moisture_4
• temp_trh_top
• rh_bottom_fraction
• surface_soil_heat_flux_2
• surface_soil_heat_flux_1
• Heat flux, sensible, at 1.5-m height, 30-min intervals(sensible_heat_flux)
• Average soil heat flow at the surface(surface_soil_heat_flux_avg)
• Radiation, net(net_radiation)
• soil_heat_capacity_5
• soil_heat_capacity_4
• soil_heat_capacity_2
• soil_heat_capacity_3
• bowen_ratio
• soil_heat_capacity_1
• soil_temp_5
• soil_temp_4
• soil_heat_flow_3
• soil_heat_flow_2
• soil_temp_3
• soil_heat_flow_1
• soil_temp_2
• soil_temp_1
• soil_heat_flow_5
• soil_heat_flow_4
• temp_air_bottom
• Wind direction, vector, lower, 1-min avg(wdir_vec_mean)
• energy_storage_change_1
• energy_storage_change_2
• energy_storage_change_3
• energy_storage_change_4
• energy_storage_change_5
• temp_trh_bottom
• Barometric Pressure(atmos_pressure)

• wdir_vec_mean_mv
• soil_heat_flow_4_mv
• soil_moisture_2_r
• soil_moisture_4_rr
• soil_heat_flow_3_mv
• soil_temp_1_rr
• soil_moisture_5_rr
• soil_heat_flow_2_mv
• temp_trh_right_rr
• soil_temp_3_rr
• soil_moisture_4_r
• soil_moisture_2_rr
• soil_heat_flow_1_mv
• soil_moisture_1_r
• soil_temp_4_rr
• temp_trh_left_rr
• temp_air_left
• rh_right_mv
• soil_moisture_3_r
• soil_moisture_3_rr
• soil_moisture_1_rr
• temp_air_right
• rh_left_mv
• soil_temp_5_rr
• soil_heat_flow_5_mv
• temp_reference_rr
• soil_moisture_5_r
• soil_temp_2_rr
• Wind speed, lower, 1-min avg(wspd_arith_mean)
• atmos_pressure_mv
• net_radiation_mv

• temp_trh_bottom
• Wind speed, lower, 1-min avg(wspd_arith_mean)
• wdir_vec_std
• rh_top_fraction
• Barometric Pressure(atmos_pressure)
• rh_bottom_fraction
• temp_reference
• Wind direction, vector, lower, 1-min avg(wdir_vec_mean)
• temp_trh_top
• temp_air_top
• Wind speed vector mean(wspd_vec_mean)
• temp_air_bottom
• vapor_pressure_bottom
• vapor_pressure_top
• Radiation, net(net_radiation)

SGP EBBR E26 - Low Battery Voltage

During the indicated the period the battery voltage often dropped 
to 10.4 volts or below.  At voltages less than 10.5 volts none of
the selected measurements can be considered to be correct.  The battery
charging capacity was insufficient to maintain voltage at night.

If the battery voltage is less than 10.5 volts (see battery voltage in the
15 minute data files), do not use the data.

• Wind speed vector mean(wspd_vec_mean)
• rh_top_fraction
• Wind speed, lower, 1-min avg(wspd_arith_mean)
• Heat flux, latent, at 1.5-m height, 30-min intervals(latent_heat_flux)
• vapor_pressure_top
• vapor_pressure_bottom
• corr_soil_heat_flow_4
• corr_soil_heat_flow_3
• corr_soil_heat_flow_2
• corr_soil_heat_flow_1
• temp_reference
• corr_soil_heat_flow_5
• wdir_vec_std
• temp_air_top
• soil_moisture_5
• surface_soil_heat_flux_5
• surface_soil_heat_flux_3
• surface_soil_heat_flux_4
• soil_moisture_1
• soil_moisture_2
• soil_moisture_3
• soil_moisture_4
• temp_trh_top
• rh_bottom_fraction
• home_signal_15
• surface_soil_heat_flux_2
• surface_soil_heat_flux_1
• Heat flux, sensible, at 1.5-m height, 30-min intervals(sensible_heat_flux)
• Average soil heat flow at the surface(surface_soil_heat_flux_avg)
• Radiation, net(net_radiation)
• soil_heat_capacity_5
• soil_heat_capacity_4
• soil_heat_capacity_2
• soil_heat_capacity_3
• bowen_ratio
• home_signal_30
• soil_heat_capacity_1
• soil_temp_5
• soil_heat_flow_3
• soil_temp_4
• soil_temp_3
• soil_heat_flow_2
• soil_temp_2
• soil_heat_flow_1
• soil_temp_1
• soil_heat_flow_5
• soil_heat_flow_4
• temp_air_bottom
• Wind direction, vector, lower, 1-min avg(wdir_vec_mean)
• energy_storage_change_1
• energy_storage_change_2
• energy_storage_change_3
• energy_storage_change_4
• energy_storage_change_5
• temp_trh_bottom
• Barometric Pressure(atmos_pressure)

• wdir_vec_mean_mv
• soil_heat_flow_4_mv
• soil_moisture_2_r
• soil_moisture_4_rr
• soil_heat_flow_3_mv
• soil_temp_1_rr
• soil_moisture_5_rr
• temp_trh_right_rr
• soil_heat_flow_2_mv
• soil_temp_3_rr
• soil_moisture_4_r
• soil_moisture_2_rr
• soil_heat_flow_1_mv
• soil_moisture_1_r
• soil_temp_4_rr
• temp_trh_left_rr
• temp_air_left
• rh_right_mv
• soil_moisture_3_r
• soil_moisture_3_rr
• home_signal
• soil_moisture_1_rr
• temp_air_right
• rh_left_mv
• soil_temp_5_rr
• soil_heat_flow_5_mv
• temp_reference_rr
• soil_moisture_5_r
• soil_temp_2_rr
• Wind speed, lower, 1-min avg(wspd_arith_mean)
• atmos_pressure_mv
• net_radiation_mv

• temp_trh_bottom
• Wind speed, lower, 1-min avg(wspd_arith_mean)
• wdir_vec_std
• rh_top_fraction
• home_signal
• Barometric Pressure(atmos_pressure)
• rh_bottom_fraction
• temp_reference
• Wind direction, vector, lower, 1-min avg(wdir_vec_mean)
• temp_trh_top
• temp_air_top
• Wind speed vector mean(wspd_vec_mean)
• temp_air_bottom
• vapor_pressure_bottom
• vapor_pressure_top
• Radiation, net(net_radiation)

SGP EBBR E26 - Battery Voltage Low

The battery voltage often dropped below 10.5 volts. 

All data for voltages below 10.5 volts should be considered to be incorrect.

See the 15 minute data files, which contain the battery voltage, to 
determine when the data was incorrect.

• Wind speed vector mean(wspd_vec_mean)
• rh_top_fraction
• Wind speed, lower, 1-min avg(wspd_arith_mean)
• Heat flux, latent, at 1.5-m height, 30-min intervals(latent_heat_flux)
• vapor_pressure_top
• vapor_pressure_bottom
• corr_soil_heat_flow_4
• corr_soil_heat_flow_3
• corr_soil_heat_flow_2
• corr_soil_heat_flow_1
• temp_reference
• corr_soil_heat_flow_5
• wdir_vec_std
• temp_air_top
• surface_soil_heat_flux_5
• soil_moisture_5
• surface_soil_heat_flux_3
• surface_soil_heat_flux_4
• soil_moisture_1
• soil_moisture_2
• soil_moisture_3
• soil_moisture_4
• temp_trh_top
• rh_bottom_fraction
• home_signal_15
• surface_soil_heat_flux_2
• surface_soil_heat_flux_1
• Heat flux, sensible, at 1.5-m height, 30-min intervals(sensible_heat_flux)
• Average soil heat flow at the surface(surface_soil_heat_flux_avg)
• Radiation, net(net_radiation)
• soil_heat_capacity_5
• soil_heat_capacity_4
• soil_heat_capacity_2
• soil_heat_capacity_3
• bowen_ratio
• soil_heat_capacity_1
• home_signal_30
• soil_temp_5
• soil_temp_4
• soil_heat_flow_3
• soil_heat_flow_2
• soil_temp_3
• soil_heat_flow_1
• soil_temp_2
• soil_temp_1
• soil_heat_flow_5
• soil_heat_flow_4
• temp_air_bottom
• Wind direction, vector, lower, 1-min avg(wdir_vec_mean)
• energy_storage_change_1
• energy_storage_change_2
• energy_storage_change_3
• energy_storage_change_4
• energy_storage_change_5
• temp_trh_bottom
• Barometric Pressure(atmos_pressure)

• wdir_vec_mean_mv
• soil_heat_flow_4_mv
• soil_moisture_2_r
• soil_moisture_4_rr
• soil_heat_flow_3_mv
• soil_temp_1_rr
• soil_moisture_5_rr
• temp_trh_right_rr
• soil_heat_flow_2_mv
• soil_temp_3_rr
• soil_moisture_4_r
• soil_moisture_2_rr
• soil_heat_flow_1_mv
• soil_moisture_1_r
• soil_temp_4_rr
• temp_trh_left_rr
• temp_air_left
• rh_right_mv
• soil_moisture_3_r
• soil_moisture_3_rr
• home_signal
• soil_moisture_1_rr
• temp_air_right
• rh_left_mv
• soil_temp_5_rr
• soil_heat_flow_5_mv
• temp_reference_rr
• soil_moisture_5_r
• soil_temp_2_rr
• Wind speed, lower, 1-min avg(wspd_arith_mean)
• atmos_pressure_mv
• net_radiation_mv

• temp_trh_bottom
• Wind speed, lower, 1-min avg(wspd_arith_mean)
• wdir_vec_std
• rh_top_fraction
• home_signal
• Barometric Pressure(atmos_pressure)
• rh_bottom_fraction
• temp_reference
• Wind direction, vector, lower, 1-min avg(wdir_vec_mean)
• temp_trh_top
• temp_air_top
• Wind speed vector mean(wspd_vec_mean)
• temp_air_bottom
• vapor_pressure_bottom
• vapor_pressure_top
• Radiation, net(net_radiation)

SGP EBBR E9 - E9 EBBR AEM Hung, Data Incorrect

A worn AEM belt caused the AEM to hang frequently.
Gradient measurements, sensible heat flux, latent heat flux,
and Bowen ratio are incorrect during the indicated periods.

The AEM hung on 2/9/01 because of icing from an ice storm.

• Heat flux, latent, at 1.5-m height, 30-min intervals(latent_heat_flux)
• rh_bottom_fraction
• rh_top_fraction
• vapor_pressure_top
• temp_trh_bottom
• temp_trh_top
• Heat flux, sensible, at 1.5-m height, 30-min intervals(sensible_heat_flux)
• vapor_pressure_bottom
• bowen_ratio
• temp_air_bottom
• temp_air_top

• temp_trh_right_rr
• rh_left_mv
• temp_air_right
• rh_right_mv
• temp_air_left
• temp_trh_left_rr

• rh_top_fraction
• vapor_pressure_top
• temp_trh_bottom
• temp_air_top
• temp_trh_top
• vapor_pressure_bottom
• temp_air_bottom
• rh_bottom_fraction

SGP EBBR E9 - E9 EBBR AEM Hung, Data Incorrect

The AEM belt was worn and the AEM hung frequently.
Gradients, sensible heat flux, latent heat flux,
and Bowen ratio were incorrect during the indicated period.

The AEM was replaced during the recalibration changeout
on 5/11/01.

• Heat flux, latent, at 1.5-m height, 30-min intervals(latent_heat_flux)
• rh_bottom_fraction
• rh_top_fraction
• vapor_pressure_top
• temp_trh_bottom
• temp_trh_top
• Heat flux, sensible, at 1.5-m height, 30-min intervals(sensible_heat_flux)
• vapor_pressure_bottom
• bowen_ratio
• temp_air_bottom
• temp_air_top

• temp_trh_right_rr
• rh_left_mv
• temp_air_right
• rh_right_mv
• temp_air_left
• temp_trh_left_rr

• rh_top_fraction
• vapor_pressure_top
• temp_trh_bottom
• temp_air_top
• temp_trh_top
• vapor_pressure_bottom
• rh_bottom_fraction
• temp_air_bottom

SGP EBBR E9 - E9 EBBR Wind Speed Frozen Stopped

An ice storm froze the wind speed sensor to a stop.

• Wind speed, lower, 1-min avg(wspd_arith_mean)
• Wind speed vector mean(wspd_vec_mean)

• Wind speed, lower, 1-min avg(wspd_arith_mean)

• Wind speed vector mean(wspd_vec_mean)
• Wind speed, lower, 1-min avg(wspd_arith_mean)

SGP EBBR E9 - E9 EBBR Wind Direction Frozen In One Direction

An ice storm froze the wind direction sensor in one postion.
Th indicated measurements are incorrect.

• Wind speed vector mean(wspd_vec_mean)
• Wind direction, vector, lower, 1-min avg(wdir_vec_mean)
• wdir_vec_std

• wdir_vec_mean_mv

• Wind speed vector mean(wspd_vec_mean)
• Wind direction, vector, lower, 1-min avg(wdir_vec_mean)
• wdir_vec_std

SGP/EBBR/E9 - Reprocess: E9 EBBR Soil Temperature #5 Intermittently Incorrect

Soil moisture probe #5 in the recalibrated unit installed
on 5/11/01 has not been working all of the time.  At times
the measurement has been very large and incorrect.  The
indicated measurements are incorrect at those times.  The
data must be inspected to determine the times that 
have incorrect data.  The sensible and latent heat fluxes can
be recalculated by using soil sets 1, 2, 3, and 4 only in a 
recalculation of the energy budget.

• Average soil heat flow at the surface(surface_soil_heat_flux_avg)
• surface_soil_heat_flux_5
• Heat flux, sensible, at 1.5-m height, 30-min intervals(sensible_heat_flux)
• Heat flux, latent, at 1.5-m height, 30-min intervals(latent_heat_flux)
• soil_temp_5
• energy_storage_change_5

• soil_temp_5_rr

SGP EBBR E9 - E9 EBBR Gradients Incorrect During Sensor Replacement

During the replacement of the right air temperature
probe, all gradient measurements were incorrect.

• Heat flux, latent, at 1.5-m height, 30-min intervals(latent_heat_flux)
• rh_bottom_fraction
• rh_top_fraction
• vapor_pressure_top
• temp_trh_bottom
• temp_trh_top
• Heat flux, sensible, at 1.5-m height, 30-min intervals(sensible_heat_flux)
• vapor_pressure_bottom
• bowen_ratio
• temp_air_bottom
• temp_air_top

• temp_trh_right_rr
• rh_left_mv
• temp_air_right
• rh_right_mv
• temp_air_left
• temp_trh_left_rr

• rh_top_fraction
• vapor_pressure_top
• temp_trh_bottom
• temp_air_top
• temp_trh_top
• vapor_pressure_bottom
• temp_air_bottom
• rh_bottom_fraction

SGP EBBR E9 - E9 EBBR Right Air Temperature Incorrect

The right air temperature probe measurements were
incorrect during these periods.

• bowen_ratio
• temp_air_bottom
• Heat flux, sensible, at 1.5-m height, 30-min intervals(sensible_heat_flux)
• temp_air_top
• Heat flux, latent, at 1.5-m height, 30-min intervals(latent_heat_flux)

• temp_air_right

• temp_air_top
• temp_air_bottom

SGP/EBBR/E9 - T/RH Check

During the month of November 1994, site operations personnel conducted
field comparisons of the temperature and relative humidity sensors in the
EBBRs and the HMI31 portable T/RH meter (with the removable probe).  As is
reflected in the home signal output, the automatic exchange mechanism was
disabled in order to conduct the checks.

Measurements were taken every 5 minutes, for a half hour each in the
aspirated radiation shields (the HMI31 was inserted into the EBBR aspirated
radiation shield to provide the same aspiration as the EBBR sensors
received).  Measurements of aspirator flow were also recorded.  This
information was provided to the mentor.  The mentor then compared the field
checks with the data recorded by the EBBRs.

The periods of data and data fields that are incorrect because of the checks
are listed below.  Times are those at which the data are reported.


Data Fields

5 minute:  tair_top, tair_bot, thum_top, thum_bot, hum_top, hum_bot,
           vp_top, vp_bot
15 minute: rr_thum_r, rr_thum_l, mv_hum_r, mv_hum_l, tair_r, tair_l
30 minute: tair_top, tair_bot, thum_top, thum_bot, hum_top, hum_bot,
           vp_top, vp_bot, bowen, e, h


5 minute:  1820, 1825, 1830, 1835, 1840, 1845, 1850, 1855, 1900,
           1905, 1910, 1915, 1920, 1925, 1930, 1935, 1940, 1945
15 minute: 1830, 1845, 1900, 1915, 1930, 1945
30 minute: 1830, 1900, 1930, 2000


(EDITOR'S NOTE:  The following analysis refers to all EBBRs installed in Nov 1994)

Results of the T/RH comparisons:
The combined accuracy of the HMI31 and EBBR temperature sensors
(thermocouples or PRTDs) is +/- 0.4 degrees C.  The combined accuracy of the
HMI31 and EBBR RH sensors is +/- 4% for RH less than 80%, and +/- 6% for RH
greater than 80%.  The combined accuracy for each pair of EBBR sensors of
the same type is essentially the same as the quantities stated above.

All of the pairs of EBBR sensors show differences that fall within the
stated combined accuracies.  Although this sounds wonderful, a few of the
differences are close to the combined accuracy, which, because of the small
differences in temperature being measured (normally smaller than the
magnitude of the combined accuracy) could lead to some incorrect estimation
of sensible and latent heat flux.  However, unless there would be substantial
differences of calibration slope of two sensors in a pair, the switching of
height of the sensors every 15 minutes by the automatic exchange mechanism
will remove the offset between the sensors.

The comparisons between the EBBR sensors and the HMI31 T/RH meter showed
much larger differences.  The range of differences were: -2.4 to 0.0 degrees
for the thermocouples, -2.1 to 0.1 degrees for the RH probe PRTDs, and -6.6 to
6.7 percent for the RH sensors.  Six Thermocouples indicated differences from
the HMI31 greater than the combined accuracy.  Seven PRTDs indicated
differences from the HMI31 greater than the combined accuracy.  Four RH
sensors indicated differences from the HMI31 greater than the combined
accuracy.  The temperature differences (for both thermocouples and PRTDs)
were nearly all of one sign; the HMI31 indicated the greater temperature,
which may suggest a bias in the HMI31 temperature measurement, even though
a dozen differences of +/- 0.2 degrees were measured.  Four differences of
zero and only one positive difference (out of 40) were measured.  Thirteen of
the 20 RH differences were positive (HMI31 indicating the lower
RH), with the differences near the level of the combined accuracies being
approximately 50% positive and 50% negative.  It does not appear that the
HMI31 has a RH bias.

Plots of EBBR sensor/HMI31 differences as a function of time from the
installation of the individual sensors (a range of 10 to 30 months in the
field) shows no obvious pattern of sensor drift with time.  This is encouraging.

• Heat flux, latent, at 1.5-m height, 30-min intervals(latent_heat_flux)
• rh_bottom_fraction
• rh_top_fraction
• vapor_pressure_top
• temp_trh_bottom
• temp_trh_top
• Heat flux, sensible, at 1.5-m height, 30-min intervals(sensible_heat_flux)
• vapor_pressure_bottom
• bowen_ratio
• temp_air_bottom
• temp_air_top

• temp_trh_right_rr
• rh_left_mv
• temp_air_right
• rh_right_mv
• temp_air_left
• temp_trh_left_rr

• rh_top_fraction
• vapor_pressure_top
• temp_trh_bottom
• temp_air_top
• temp_trh_top
• vapor_pressure_bottom
• temp_air_bottom
• rh_bottom_fraction

SGP/EBBR/E26 - 3-month Check

During EBBR 3 month checks the Automatic Exchange Mechanism is disabled
(reflected by home signals near zero) so that the two aspirator units can be
placed at the same height.  The measurements during this period, at least,
do not produce correct outputs of bowen ratio (bowen), sensible heat flux (h),
or latent heat flux (e), nor do the air temperature and relative humidity
measurements indicate gradients.  Checks performed before or after the AEM
is disabled also lead to some incorrect data.

• temp_air_bottom
• temp_air_top
• temp_trh_bottom
• temp_trh_top
• rh_top_fraction
• bowen_ratio
• rh_bottom_fraction
• Heat flux, latent, at 1.5-m height, 30-min intervals(latent_heat_flux)
• Heat flux, sensible, at 1.5-m height, 30-min intervals(sensible_heat_flux)
• vapor_pressure_top
• vapor_pressure_bottom

• rh_left_mv
• temp_trh_left_rr
• temp_air_left
• temp_trh_right_rr
• rh_right_mv
• temp_air_right

• temp_trh_top
• temp_trh_bottom
• temp_air_top
• temp_air_bottom
• rh_bottom_fraction
• rh_top_fraction
• vapor_pressure_top
• vapor_pressure_bottom

SGP/EBBR/E9 - Annual calibration changeout

On November 15, 1995 the changeout for annual calibration occurred at E9,
Ashton, KS.  The soil moisture sensors were shipped wet from the vendor 
and did not stabilize until 25 November 1995.  The following data should 
be considered incorrect until 25 November 1995:

15 minute:  rr_sm1, rr_sm2, rr_sm3, rr_sm4, rr_sm5

30 minute:  h, e, ave_shf, shf1, shf2, shf3, shf4, shf5, sm1, sm2, sm3,
            sm4, sm5, cs1, cs2, cs3, cs4, cs5, ces1, ces2, ces3, ces4,
            g1, g2, g3, g4, g5.

• energy_storage_change_1
• energy_storage_change_2
• energy_storage_change_3
• energy_storage_change_4
• surface_soil_heat_flux_4
• surface_soil_heat_flux_5
• surface_soil_heat_flux_2
• surface_soil_heat_flux_3
• Heat flux, latent, at 1.5-m height, 30-min intervals(latent_heat_flux)
• surface_soil_heat_flux_1
• energy_storage_change_5
• soil_heat_capacity_1
• soil_heat_capacity_2
• soil_heat_capacity_3
• soil_heat_capacity_4
• soil_heat_capacity_5
• Heat flux, sensible, at 1.5-m height, 30-min intervals(sensible_heat_flux)
• soil_heat_flow_5
• Average soil heat flow at the surface(surface_soil_heat_flux_avg)
• soil_heat_flow_2
• soil_heat_flow_1
• soil_heat_flow_4
• soil_heat_flow_3
• soil_moisture_1
• soil_moisture_3
• soil_moisture_2
• soil_moisture_5
• soil_moisture_4

• soil_moisture_5_rr
• soil_moisture_2_rr
• soil_moisture_4_rr
• soil_moisture_1_rr
• soil_moisture_3_rr

SGP/EBBR/E9 - 6 Month Checks

The indicated measurements were incorrect during the 6 month checks.

• vapor_pressure_top
• temp_trh_bottom
• temp_trh_top
• Heat flux, sensible, at 1.5-m height, 30-min intervals(sensible_heat_flux)
• Heat flux, latent, at 1.5-m height, 30-min intervals(latent_heat_flux)
• rh_bottom_fraction
• vapor_pressure_bottom
• bowen_ratio
• temp_air_bottom
• temp_air_top
• rh_top_fraction

• temp_air_right
• temp_air_left

• rh_top_fraction
• temp_air_top
• vapor_pressure_top
• temp_trh_top
• vapor_pressure_bottom
• temp_trh_bottom
• temp_air_bottom
• rh_bottom_fraction

SGP/EBBR/E26 - 6 Month Checks

The indicated measurements were incorrect during the 6 month checks.

• temp_air_bottom
• temp_trh_top
• bowen_ratio
• rh_top_fraction
• rh_bottom_fraction
• Heat flux, latent, at 1.5-m height, 30-min intervals(latent_heat_flux)
• temp_air_top
• temp_trh_bottom
• Heat flux, sensible, at 1.5-m height, 30-min intervals(sensible_heat_flux)
• vapor_pressure_top
• vapor_pressure_bottom

• temp_air_right
• temp_air_left

• temp_trh_top
• temp_trh_bottom
• temp_air_top
• rh_top_fraction
• rh_bottom_fraction
• vapor_pressure_top
• vapor_pressure_bottom
• temp_air_bottom

SGP/EBBR/E9 - Annual calibration changeout

On November 15, 1995 the changeout for annual calibration occurred at E9,
Ashton, KS.  After installation of the new SEBS unit, RH output was zero.  
The next day site operations personnel found that the RH probe cable 
connections were loose.  RH returned to normal after the connections were 
tightened at 1700 GMT on 16 November 1995.  During the period of time that 
the connections were not made, the following data values are incorrect: 

5 minute:  hum_top, hum_bot, vp_top, vp_bot

15 minute: mv_hum_r, mv_hum_l

30 minute: hum_top, hum_bot, vp_top, vp_bot.

• vapor_pressure_top
• rh_bottom_fraction
• vapor_pressure_bottom
• rh_top_fraction

• rh_left_mv
• rh_right_mv

• vapor_pressure_bottom
• rh_top_fraction
• vapor_pressure_top
• rh_bottom_fraction

SGP/EBBR/E9 - Reprocess: Soil Temperature #5 Incorrect

Soil temperature # 5 was incorrect most of the time, leading to incorrect surface heat 
flow, latent heat flux and sensible heat flux.  The heat fluxes can be recalculated by using 
soil sets 1-4 as follows:

ave_shf = (g1 + g2 + g3 + g4)/4
e = -(q + ave_shf)/(1 + bowen)
h = -(q + e + ave_shf)

• Average soil heat flow at the surface(surface_soil_heat_flux_avg)
• surface_soil_heat_flux_5
• Heat flux, sensible, at 1.5-m height, 30-min intervals(sensible_heat_flux)
• Heat flux, latent, at 1.5-m height, 30-min intervals(latent_heat_flux)
• soil_temp_5
• energy_storage_change_5

SGP/EBBR/E9 - Measurements All Zeros

The measurements were all zeros at the indicated times.  This occurs after a CR10 program 
restart, which sometimes happens after some servicing of the EBBR is performed.

• Barometric Pressure(atmos_pressure)
• Heat flux, latent, at 1.5-m height, 30-min intervals(latent_heat_flux)
• temp_trh_top
• soil_heat_flow_5
• soil_heat_flow_2
• soil_heat_flow_1
• soil_heat_flow_4
• vapor_pressure_bottom
• soil_heat_flow_3
• temp_air_bottom
• Wind direction, vector, lower, 1-min avg(wdir_vec_mean)
• surface_soil_heat_flux_4
• surface_soil_heat_flux_5
• surface_soil_heat_flux_2
• surface_soil_heat_flux_3
• surface_soil_heat_flux_1
• rh_bottom_fraction
• corr_soil_heat_flow_1
• corr_soil_heat_flow_2
• corr_soil_heat_flow_3
• corr_soil_heat_flow_4
• corr_soil_heat_flow_5
• Average soil heat flow at the surface(surface_soil_heat_flux_avg)
• bowen_ratio
• energy_storage_change_1
• Wind speed, lower, 1-min avg(wspd_arith_mean)
• energy_storage_change_2
• energy_storage_change_3
• energy_storage_change_4
• home_signal_30
• soil_temp_4
• soil_temp_5
• energy_storage_change_5
• Wind speed vector mean(wspd_vec_mean)
• soil_temp_3
• soil_temp_2
• soil_temp_1
• Radiation, net(net_radiation)
• rh_top_fraction
• soil_heat_capacity_1
• soil_heat_capacity_2
• soil_heat_capacity_3
• soil_heat_capacity_4
• soil_heat_capacity_5
• wdir_vec_std
• temp_reference
• soil_moisture_1
• soil_moisture_3
• soil_moisture_2
• soil_moisture_5
• soil_moisture_4
• home_signal_15
• temp_trh_bottom
• vapor_pressure_top
• Heat flux, sensible, at 1.5-m height, 30-min intervals(sensible_heat_flux)
• temp_air_top

• Raw data stream - documentation not supported

• soil_moisture_4_rr
• soil_temp_3_rr
• soil_temp_2_rr
• soil_heat_flow_3_mv
• soil_heat_flow_1_mv
• soil_temp_5_rr
• soil_temp_1_rr
• soil_heat_flow_5_mv
• temp_reference_rr
• Wind speed, lower, 1-min avg(wspd_arith_mean)
• net_radiation_mv
• temp_trh_right_rr
• soil_heat_flow_2_mv
• battery_voltage
• rh_left_mv
• soil_moisture_3_rr
• home_signal
• soil_heat_flow_4_mv
• soil_temp_4_rr
• atmos_pressure_mv
• rh_right_mv
• wdir_vec_mean_mv
• temp_trh_left_rr
• soil_moisture_5_rr
• soil_moisture_2_rr
• soil_moisture_1_rr
• temp_air_right
• temp_air_left

• temp_reference
• Wind speed, lower, 1-min avg(wspd_arith_mean)
• rh_top_fraction
• Wind direction, vector, lower, 1-min avg(wdir_vec_mean)
• home_signal
• Barometric Pressure(atmos_pressure)
• Wind speed vector mean(wspd_vec_mean)
• temp_trh_top
• rh_bottom_fraction
• temp_air_bottom
• vapor_pressure_top
• temp_trh_bottom
• temp_air_top
• vapor_pressure_bottom
• Radiation, net(net_radiation)
• wdir_vec_std

SGP/EBBR/E26 - Measurements Zero

The measurements are often zero after a CR10 datalogger restart, as occurred here.

• Wind speed vector mean(wspd_vec_mean)
• rh_top_fraction
• Wind speed, lower, 1-min avg(wspd_arith_mean)
• Heat flux, latent, at 1.5-m height, 30-min intervals(latent_heat_flux)
• vapor_pressure_top
• vapor_pressure_bottom
• corr_soil_heat_flow_4
• corr_soil_heat_flow_3
• corr_soil_heat_flow_2
• corr_soil_heat_flow_1
• temp_reference
• corr_soil_heat_flow_5
• wdir_vec_std
• temp_air_top
• surface_soil_heat_flux_5
• soil_moisture_5
• surface_soil_heat_flux_3
• surface_soil_heat_flux_4
• soil_moisture_1
• soil_moisture_2
• soil_moisture_3
• soil_moisture_4
• temp_trh_top
• rh_bottom_fraction
• home_signal_15
• surface_soil_heat_flux_2
• surface_soil_heat_flux_1
• Heat flux, sensible, at 1.5-m height, 30-min intervals(sensible_heat_flux)
• Average soil heat flow at the surface(surface_soil_heat_flux_avg)
• Radiation, net(net_radiation)
• soil_heat_capacity_5
• soil_heat_capacity_4
• soil_heat_capacity_2
• soil_heat_capacity_3
• bowen_ratio
• home_signal_30
• soil_heat_capacity_1
• soil_temp_5
• soil_heat_flow_3
• soil_temp_4
• soil_heat_flow_2
• soil_temp_3
• soil_heat_flow_1
• soil_temp_2
• soil_temp_1
• soil_heat_flow_5
• soil_heat_flow_4
• temp_air_bottom
• Wind direction, vector, lower, 1-min avg(wdir_vec_mean)
• energy_storage_change_1
• energy_storage_change_2
• energy_storage_change_3
• energy_storage_change_4
• energy_storage_change_5
• temp_trh_bottom
• Barometric Pressure(atmos_pressure)

• wdir_vec_mean_mv
• soil_heat_flow_4_mv
• soil_moisture_4_rr
• soil_heat_flow_3_mv
• soil_temp_1_rr
• soil_moisture_5_rr
• temp_trh_right_rr
• soil_heat_flow_2_mv
• battery_voltage
• soil_temp_3_rr
• soil_moisture_2_rr
• soil_heat_flow_1_mv
• soil_temp_4_rr
• temp_trh_left_rr
• temp_air_left
• rh_right_mv
• soil_moisture_3_rr
• home_signal
• soil_moisture_1_rr
• temp_air_right
• rh_left_mv
• soil_temp_5_rr
• soil_heat_flow_5_mv
• temp_reference_rr
• soil_temp_2_rr
• Wind speed, lower, 1-min avg(wspd_arith_mean)
• atmos_pressure_mv
• net_radiation_mv

• temp_trh_bottom
• Wind speed, lower, 1-min avg(wspd_arith_mean)
• wdir_vec_std
• rh_top_fraction
• home_signal
• Barometric Pressure(atmos_pressure)
• rh_bottom_fraction
• temp_reference
• Wind direction, vector, lower, 1-min avg(wdir_vec_mean)
• temp_trh_top
• temp_air_top
• Wind speed vector mean(wspd_vec_mean)
• temp_air_bottom
• vapor_pressure_bottom
• vapor_pressure_top
• Radiation, net(net_radiation)

• Raw data stream - documentation not supported

SGP/EBBR/E26 - Measurements Incorrect

Change of energy storage (CES) measurements (calculated from the change of soil 
temperature with time) are sometimes incorrect after a CR10 program restart because the beginning 
measurement of the averaging period is zero.  

Average soil heat flow, sensible heat flux, and latent heat flux were affected and cannot 
be recalculated.

• Average soil heat flow at the surface(surface_soil_heat_flux_avg)
• energy_storage_change_1
• energy_storage_change_2
• energy_storage_change_3
• Heat flux, latent, at 1.5-m height, 30-min intervals(latent_heat_flux)
• energy_storage_change_4
• surface_soil_heat_flux_2
• surface_soil_heat_flux_1
• energy_storage_change_5
• Heat flux, sensible, at 1.5-m height, 30-min intervals(sensible_heat_flux)
• surface_soil_heat_flux_5
• surface_soil_heat_flux_3
• surface_soil_heat_flux_4

SGP/EBBR/E26 - Multiplexer 2 Failure From High Temperature

Multiplexer 2 is failing during times of control box temperatures above 29 degrees C.  The 
failure begins in the last channel and progresses to lower channels as the temperature 
increases.  It has not yet been determined whether the failure is in the relays or a solid 
state component of the multiplexer.  This condition is probably due to the aging of the 
device and the millions of cycles that this 10 year old device has made.  More failures 
of this sort may occur in the future.  A cure is being sought aside from replacement of 
the multiplexers to prevent the problem.

The indicated measurements need to be inspected to determine which ones are usable.

• temp_air_bottom
• bowen_ratio
• Average soil heat flow at the surface(surface_soil_heat_flux_avg)
• Heat flux, latent, at 1.5-m height, 30-min intervals(latent_heat_flux)
• temp_air_top
• soil_heat_flow_3
• soil_heat_flow_5
• Heat flux, sensible, at 1.5-m height, 30-min intervals(sensible_heat_flux)
• soil_heat_flow_4
• vapor_pressure_top
• vapor_pressure_bottom
• corr_soil_heat_flow_4
• surface_soil_heat_flux_5
• corr_soil_heat_flow_3
• surface_soil_heat_flux_3
• surface_soil_heat_flux_4
• corr_soil_heat_flow_5

• temp_air_right
• temp_air_left

• temp_air_top
• vapor_pressure_top
• vapor_pressure_bottom
• temp_air_bottom

SGP/EBBR/E9 - Humidity Probe Measurements Incorrect

The temperature and humidity measurements from both T/RH probes were incorrect during 
changeout of the right probe.

• temp_trh_bottom
• vapor_pressure_top
• temp_trh_top
• Heat flux, sensible, at 1.5-m height, 30-min intervals(sensible_heat_flux)
• Heat flux, latent, at 1.5-m height, 30-min intervals(latent_heat_flux)
• rh_bottom_fraction
• vapor_pressure_bottom
• rh_top_fraction

• rh_top_fraction
• vapor_pressure_top
• temp_trh_top
• vapor_pressure_bottom
• rh_bottom_fraction
• temp_trh_bottom

SGP/EBBR/E9 - Right Humidity Suspect

The Right Humidity measurement was normally incorrect, although it is often difficult to 
determine it by looking at the measurement.  The measurements float around, sometimes 
being too large and sometimes being too small, through most of the day, particularly for the 
hour before sunset through the hour after sunrise.  Great care and comparison with 
surrounding EBBR sites would be needed to be able to use any of the latent and sensible heat 
flux measurements from E9 for this period. 

Another DQPR has been issued to fix this problem, which has eluded repair efforts so far.

• vapor_pressure_top
• rh_bottom_fraction
• vapor_pressure_bottom
• Heat flux, sensible, at 1.5-m height, 30-min intervals(sensible_heat_flux)
• Heat flux, latent, at 1.5-m height, 30-min intervals(latent_heat_flux)
• rh_top_fraction

• vapor_pressure_bottom
• rh_top_fraction
• vapor_pressure_top
• rh_bottom_fraction

SGP/EBBR/E26 - Annual Calibration Changeout

On 16 November 1996 the EBBR changeout for annual calibration occurred at 
E26, Cement, OK.  SEBS unit 2 was removed and unit 8 was installed.  
Data for half hours 1400 and 1430 GMT on 17 November is 
incorrect; 3 month calibration checks were being performed.

• Wind speed vector mean(wspd_vec_mean)
• rh_top_fraction
• Wind speed, lower, 1-min avg(wspd_arith_mean)
• Heat flux, latent, at 1.5-m height, 30-min intervals(latent_heat_flux)
• vapor_pressure_top
• vapor_pressure_bottom
• corr_soil_heat_flow_4
• corr_soil_heat_flow_3
• corr_soil_heat_flow_2
• corr_soil_heat_flow_1
• temp_reference
• corr_soil_heat_flow_5
• wdir_vec_std
• temp_air_top
• surface_soil_heat_flux_5
• soil_moisture_5
• surface_soil_heat_flux_3
• surface_soil_heat_flux_4
• soil_moisture_1
• soil_moisture_2
• soil_moisture_3
• soil_moisture_4
• temp_trh_top
• rh_bottom_fraction
• home_signal_15
• surface_soil_heat_flux_2
• surface_soil_heat_flux_1
• lon
• Heat flux, sensible, at 1.5-m height, 30-min intervals(sensible_heat_flux)
• Average soil heat flow at the surface(surface_soil_heat_flux_avg)
• Radiation, net(net_radiation)
• soil_heat_capacity_5
• soil_heat_capacity_4
• soil_heat_capacity_2
• soil_heat_capacity_3
• bowen_ratio
• soil_heat_capacity_1
• home_signal_30
• lat
• soil_temp_5
• soil_temp_4
• soil_heat_flow_3
• soil_heat_flow_2
• soil_temp_3
• soil_heat_flow_1
• soil_temp_2
• soil_temp_1
• soil_heat_flow_5
• soil_heat_flow_4
• temp_air_bottom
• Wind direction, vector, lower, 1-min avg(wdir_vec_mean)
• energy_storage_change_1
• energy_storage_change_2
• energy_storage_change_3
• time_offset
• energy_storage_change_4
• energy_storage_change_5
• temp_trh_bottom
• alt
• Barometric Pressure(atmos_pressure)
• base_time

• wdir_vec_mean_mv
• soil_heat_flow_4_mv
• soil_moisture_2_r
• soil_heat_flow_3_mv
• soil_temp_1_rr
• soil_heat_flow_2_mv
• temp_trh_right_rr
• battery_voltage
• lon
• soil_temp_3_rr
• soil_moisture_4_r
• soil_heat_flow_1_mv
• soil_moisture_1_r
• soil_temp_4_rr
• temp_trh_left_rr
• lat
• temp_air_left
• alt
• rh_right_mv
• soil_moisture_3_r
• home_signal
• temp_air_right
• rh_left_mv
• soil_temp_5_rr
• soil_heat_flow_5_mv
• temp_reference_rr
• time_offset
• soil_moisture_5_r
• base_time
• soil_temp_2_rr
• Wind speed, lower, 1-min avg(wspd_arith_mean)
• atmos_pressure_mv
• net_radiation_mv

• temp_trh_bottom
• lon
• Wind speed, lower, 1-min avg(wspd_arith_mean)
• wdir_vec_std
• rh_top_fraction
• home_signal
• Barometric Pressure(atmos_pressure)
• time_offset
• rh_bottom_fraction
• temp_reference
• Wind direction, vector, lower, 1-min avg(wdir_vec_mean)
• temp_trh_top
• temp_air_top
• Wind speed vector mean(wspd_vec_mean)
• temp_air_bottom
• vapor_pressure_bottom
• alt
• vapor_pressure_top
• Radiation, net(net_radiation)
• lat
• base_time

SGP/EBBR - Incorrect Units for Soil Heat Capacity (cs1, cs2, cs3, cs4, cs5) in 30EBBR 
Header

The units for Soil Heat Capacity (cs1, cs2, cs3, cs4, cs5) in the 
EBBR 30 minute netcdf header have been incorrect from the beginning 
of processing the data into netcdf files.  The correct units are 
MJ/m^3/C.

This does not affect the data quality.

• soil_heat_capacity_1
• soil_heat_capacity_2
• soil_heat_capacity_3
• soil_heat_capacity_5
• soil_heat_capacity_4

• soil_heat_capacity_5
• soil_heat_capacity_4
• soil_heat_capacity_2
• soil_heat_capacity_3
• soil_heat_capacity_1

• soil_heat_capacity_1
• soil_heat_capacity_2
• soil_heat_capacity_3
• soil_heat_capacity_4
• soil_heat_capacity_5

• soil_heat_capacity_5
• soil_heat_capacity_4
• soil_heat_capacity_3
• soil_heat_capacity_2
• soil_heat_capacity_1

• soil_heat_capacity_1
• soil_heat_capacity_5
• soil_heat_capacity_4
• soil_heat_capacity_3
• soil_heat_capacity_2

• soil_heat_capacity_1
• soil_heat_capacity_2
• soil_heat_capacity_5
• soil_heat_capacity_3
• soil_heat_capacity_4

• soil_heat_capacity_5
• soil_heat_capacity_2
• soil_heat_capacity_1
• soil_heat_capacity_4
• soil_heat_capacity_3

• soil_heat_capacity_2
• soil_heat_capacity_1
• soil_heat_capacity_5
• soil_heat_capacity_4
• soil_heat_capacity_3

• soil_heat_capacity_1
• soil_heat_capacity_2
• soil_heat_capacity_3
• soil_heat_capacity_4
• soil_heat_capacity_5

• soil_heat_capacity_1
• soil_heat_capacity_2
• soil_heat_capacity_3
• soil_heat_capacity_4
• soil_heat_capacity_5

• soil_heat_capacity_4
• soil_heat_capacity_5
• soil_heat_capacity_2
• soil_heat_capacity_3
• soil_heat_capacity_1

• soil_heat_capacity_2
• soil_heat_capacity_3
• soil_heat_capacity_4
• soil_heat_capacity_5
• soil_heat_capacity_1

• soil_heat_capacity_3
• soil_heat_capacity_2
• soil_heat_capacity_5
• soil_heat_capacity_4
• soil_heat_capacity_1

SGP/EBBR - Incorrect Units for Soil Heat Capacity (cs1, cs2, cs3, cs4, cs5) in 30EBBR 
Header

The units for Soil Heat Capacity (cs1, cs2, cs3, cs4,
cs5) in the EBBR 30 minute netcdf header have been 
incorrect from the beginning of processing the data
into netcdf files.  The correct units are MJ/m^3/C.
   
This does not affect the data quality.

(NOTE: The actual begin date of some of these data streams
 is as early as 7/4/93.  This DQR applies to all 30m EBBR
 data.)

• soil_heat_capacity_5
• soil_heat_capacity_4
• soil_heat_capacity_2
• soil_heat_capacity_3
• soil_heat_capacity_1

• soil_heat_capacity_1
• soil_heat_capacity_2
• soil_heat_capacity_3
• soil_heat_capacity_4
• soil_heat_capacity_5

• soil_heat_capacity_1
• soil_heat_capacity_2
• soil_heat_capacity_5
• soil_heat_capacity_3
• soil_heat_capacity_4

• soil_heat_capacity_1
• soil_heat_capacity_2
• soil_heat_capacity_3
• soil_heat_capacity_4
• soil_heat_capacity_5

• soil_heat_capacity_2
• soil_heat_capacity_1
• soil_heat_capacity_5
• soil_heat_capacity_4
• soil_heat_capacity_3

• soil_heat_capacity_1
• soil_heat_capacity_2
• soil_heat_capacity_3
• soil_heat_capacity_4
• soil_heat_capacity_5

• soil_heat_capacity_5
• soil_heat_capacity_4
• soil_heat_capacity_3
• soil_heat_capacity_2
• soil_heat_capacity_1

• soil_heat_capacity_1
• soil_heat_capacity_5
• soil_heat_capacity_4
• soil_heat_capacity_3
• soil_heat_capacity_2

• soil_heat_capacity_3
• soil_heat_capacity_2
• soil_heat_capacity_5
• soil_heat_capacity_4
• soil_heat_capacity_1

• soil_heat_capacity_2
• soil_heat_capacity_3
• soil_heat_capacity_4
• soil_heat_capacity_5
• soil_heat_capacity_1

SGP/EBBR/E26 - Data Incorrect during 6 month checks

Some of the measurements are incorrect during the 6 month checks.

• temp_air_bottom
• temp_trh_top
• bowen_ratio
• rh_top_fraction
• rh_bottom_fraction
• Heat flux, latent, at 1.5-m height, 30-min intervals(latent_heat_flux)
• temp_air_top
• temp_trh_bottom
• Heat flux, sensible, at 1.5-m height, 30-min intervals(sensible_heat_flux)
• vapor_pressure_top
• vapor_pressure_bottom

• temp_air_right
• temp_air_left

• temp_trh_top
• temp_trh_bottom
• temp_air_top
• rh_bottom_fraction
• rh_top_fraction
• vapor_pressure_top
• vapor_pressure_bottom
• temp_air_bottom

SGP/EBBR/E9 - Data Incorrect during 6 month checks

Some of the measurements are incorrect during the 6 month checks.

• temp_trh_bottom
• vapor_pressure_top
• temp_trh_top
• Heat flux, sensible, at 1.5-m height, 30-min intervals(sensible_heat_flux)
• Heat flux, latent, at 1.5-m height, 30-min intervals(latent_heat_flux)
• rh_bottom_fraction
• vapor_pressure_bottom
• bowen_ratio
• temp_air_bottom
• temp_air_top
• rh_top_fraction

• temp_air_right
• temp_air_left

• rh_top_fraction
• temp_air_top
• vapor_pressure_top
• temp_trh_top
• vapor_pressure_bottom
• rh_bottom_fraction
• temp_trh_bottom
• temp_air_bottom

SGP/EBBR/E9 - REPROCESS: Soil Temperature #5 Incorrect

Soil Temperature #5 was intermittently incorrect.
The cause is unknown. The indicated measurements 
that are calculated using soil temperature are 
also incorrect.

• Average soil heat flow at the surface(surface_soil_heat_flux_avg)
• surface_soil_heat_flux_5
• Heat flux, sensible, at 1.5-m height, 30-min intervals(sensible_heat_flux)
• Heat flux, latent, at 1.5-m height, 30-min intervals(latent_heat_flux)
• soil_temp_5
• energy_storage_change_5

SGP/EBBR/E9 - REPROCESS: Soil Heat Flow #4 Incorrect

Soil Heat Flow #4 was incorrect during these periods as a 
consequence of the repair of Soil Temperature #5.  
See below for a work-around.

• Average soil heat flow at the surface(surface_soil_heat_flux_avg)
• soil_heat_flow_4
• surface_soil_heat_flux_4
• Heat flux, sensible, at 1.5-m height, 30-min intervals(sensible_heat_flux)
• Heat flux, latent, at 1.5-m height, 30-min intervals(latent_heat_flux)
• corr_soil_heat_flow_4

SGP/EBBR/E9 - Net Rad data bad during dome replacement

The net radiation measurement was incorrect during replacement
of the top dome. Measurements calculated using net radiation are also incorrect.

• Radiation, net(net_radiation)
• Heat flux, sensible, at 1.5-m height, 30-min intervals(sensible_heat_flux)
• Heat flux, latent, at 1.5-m height, 30-min intervals(latent_heat_flux)

• net_radiation_mv

• Radiation, net(net_radiation)

SGP/EBBR/E9 - AEM Malfunction

When the AEM (Automatic Exchange Mechanism) is hung 
inbetween a home position, the gradients of temperature and 
relative humidity, and thus sensible and latent heat fluxes, 
are incorrect.

• temp_trh_bottom
• vapor_pressure_top
• temp_trh_top
• Heat flux, sensible, at 1.5-m height, 30-min intervals(sensible_heat_flux)
• Heat flux, latent, at 1.5-m height, 30-min intervals(latent_heat_flux)
• rh_bottom_fraction
• vapor_pressure_bottom
• bowen_ratio
• temp_air_bottom
• temp_air_top
• rh_top_fraction

• temp_air_right
• temp_air_left

• rh_top_fraction
• temp_air_top
• vapor_pressure_top
• temp_trh_top
• vapor_pressure_bottom
• temp_trh_bottom
• temp_air_bottom
• rh_bottom_fraction

SGP/EBBR/E26 - Measurements zero following logger restart

Most of the measurements were zero, which normally happens after a 
datalogger restart.

• Wind speed vector mean(wspd_vec_mean)
• rh_top_fraction
• Wind speed, lower, 1-min avg(wspd_arith_mean)
• Heat flux, latent, at 1.5-m height, 30-min intervals(latent_heat_flux)
• vapor_pressure_top
• vapor_pressure_bottom
• corr_soil_heat_flow_4
• corr_soil_heat_flow_3
• corr_soil_heat_flow_2
• corr_soil_heat_flow_1
• temp_reference
• corr_soil_heat_flow_5
• wdir_vec_std
• temp_air_top
• surface_soil_heat_flux_5
• soil_moisture_5
• surface_soil_heat_flux_3
• surface_soil_heat_flux_4
• soil_moisture_1
• soil_moisture_2
• soil_moisture_3
• soil_moisture_4
• temp_trh_top
• rh_bottom_fraction
• home_signal_15
• surface_soil_heat_flux_2
• surface_soil_heat_flux_1
• Heat flux, sensible, at 1.5-m height, 30-min intervals(sensible_heat_flux)
• Average soil heat flow at the surface(surface_soil_heat_flux_avg)
• Radiation, net(net_radiation)
• soil_heat_capacity_5
• soil_heat_capacity_4
• soil_heat_capacity_2
• soil_heat_capacity_3
• bowen_ratio
• home_signal_30
• soil_heat_capacity_1
• soil_temp_5
• soil_heat_flow_3
• soil_temp_4
• soil_heat_flow_2
• soil_temp_3
• soil_heat_flow_1
• soil_temp_2
• soil_temp_1
• soil_heat_flow_5
• soil_heat_flow_4
• temp_air_bottom
• Wind direction, vector, lower, 1-min avg(wdir_vec_mean)
• energy_storage_change_1
• energy_storage_change_2
• energy_storage_change_3
• energy_storage_change_4
• energy_storage_change_5
• temp_trh_bottom
• Barometric Pressure(atmos_pressure)

• wdir_vec_mean_mv
• soil_heat_flow_4_mv
• soil_moisture_4_rr
• soil_heat_flow_3_mv
• soil_temp_1_rr
• soil_moisture_5_rr
• temp_trh_right_rr
• soil_heat_flow_2_mv
• battery_voltage
• soil_temp_3_rr
• soil_moisture_2_rr
• soil_heat_flow_1_mv
• soil_temp_4_rr
• temp_trh_left_rr
• temp_air_left
• rh_right_mv
• soil_moisture_3_rr
• home_signal
• soil_moisture_1_rr
• temp_air_right
• rh_left_mv
• soil_temp_5_rr
• soil_heat_flow_5_mv
• temp_reference_rr
• soil_temp_2_rr
• Wind speed, lower, 1-min avg(wspd_arith_mean)
• atmos_pressure_mv
• net_radiation_mv

• temp_trh_bottom
• Wind speed, lower, 1-min avg(wspd_arith_mean)
• wdir_vec_std
• rh_top_fraction
• home_signal
• Barometric Pressure(atmos_pressure)
• rh_bottom_fraction
• temp_reference
• Wind direction, vector, lower, 1-min avg(wdir_vec_mean)
• temp_trh_top
• temp_air_top
• Wind speed vector mean(wspd_vec_mean)
• temp_air_bottom
• vapor_pressure_bottom
• vapor_pressure_top
• Radiation, net(net_radiation)