SGP/EBBR - EBBR E22 Moved, Data Missing/Incorrect

During, and as a consequence of, the relocation of E22 EBBR, some data
is missing or incorrect during the period above.  The data was 
sneakernetted on 3 Nov 99, so some of the data may have been recovered.
Some of the data during the period is incorrect as a consequence of
damage done by cattle during the period; inspection of the data is
required to determine incorrect data.

• corr_soil_heat_flow_2
• corr_soil_heat_flow_1
• corr_soil_heat_flow_4
• corr_soil_heat_flow_3
• corr_soil_heat_flow_5
• base_time
• vapor_pressure_top
• Heat flux, sensible, at 1.5-m height, 30-min intervals(sensible_heat_flux)
• temp_reference
• Wind speed, lower, 1-min avg(wspd_arith_mean)
• temp_air_bottom
• Average soil heat flow at the surface(surface_soil_heat_flux_avg)
• lat
• temp_trh_top
• alt
• Wind speed vector mean(wspd_vec_mean)
• lon
• energy_storage_change_1
• vapor_pressure_bottom
• home_signal_30
• Heat flux, latent, at 1.5-m height, 30-min intervals(latent_heat_flux)
• rh_bottom_fraction
• temp_trh_bottom
• bowen_ratio
• soil_moisture_5
• Radiation, net(net_radiation)
• soil_moisture_1
• soil_moisture_2
• soil_moisture_3
• soil_moisture_4
• soil_heat_capacity_5
• soil_heat_capacity_4
• soil_heat_capacity_3
• soil_heat_flow_2
• soil_heat_capacity_2
• soil_heat_flow_3
• soil_heat_capacity_1
• soil_heat_flow_1
• energy_storage_change_3
• energy_storage_change_2
• energy_storage_change_5
• energy_storage_change_4
• home_signal_15
• time_offset
• wdir_vec_std
• soil_heat_flow_5
• soil_heat_flow_4
• Soil temperature mean 5(soil_temp_5)
• Soil temperature mean 2(soil_temp_2)
• Soil temperature mean 1(soil_temp_1)
• Soil temperature mean 4(soil_temp_4)
• Soil temperature mean 3(soil_temp_3)
• Wind direction, vector, lower, 1-min avg(wdir_vec_mean)
• temp_air_top
• Barometric Pressure(atmos_pressure)
• rh_top_fraction
• surface_soil_heat_flux_2
• surface_soil_heat_flux_1
• surface_soil_heat_flux_4
• surface_soil_heat_flux_3
• surface_soil_heat_flux_5

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

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

SGP/EBBR - EBBR E22 Net Radiation Incorrect

The upper dome of the net radiometer was broken, probably by migrating
birds, and water had drained into the bottom dome.  Since much of the data
is missing during the period, it is not clear exactly when the top dome was
broken during the period.  All net radiation data and sensible and latent 
heat fluxes data are incorrect for this period.

The affected data fields are:

5 minute:  q

15 minute: mv_q

30 minute: q, e, h

• 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)
• Radiation, net(net_radiation)

• Radiation, net(net_radiation)

• net_radiation_mv

SGP/EBBR - EBBR E22 Soil Moistures Negative

Because of the lack of rain, soil moistures were negative during much 
of the period.  All five soil moisture sensors had negative outputs by 
early on Aug 1.  The negative soil moistures affected sensible and latent
heat fluxes slightly.

The affected data are:

15 minute: r_sm1, r_sm2, r_sm3, r_sm4, r_sm5
30 minute: sm1, sm2, sm3, sm4, sm5, c_shf1, c_shf2, c_shf3, c_shf4,
           c_shf5, cs1, cs2, cs3, cs4, cs5, ces1, ces2, ces3, ces4, ces5,
           g1, g2, g3, g4, g5, ave_shf, e, h

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

• soil_moisture_4_r
• soil_moisture_3_r
• soil_moisture_1_r
• soil_moisture_5_r
• soil_moisture_2_r

SGP/EBBR - EBBR E22 Soil Moistures Negative

Because of the lack of rain, all soil moistures were negative during much 
of the period.  The negative soil moistures caused soil heat storage and
thus average soil heat flux to be smaller than they should have been.  The
sensible and latent heat fluxes were therefore reduced slightly 
(approximately 0-5%).

The affected data are:

15 minute: r_sm1, r_sm2, r_sm3, r_sm4, r_sm5
30 minute: sm1, sm2, sm3, sm4, sm5, c_shf1, c_shf2, c_shf3, c_shf4,
           c_shf5, cs1, cs2, cs3, cs4, cs5, ces1, ces2, ces3, ces4, ces5,
           g1, g2, g3, g4, g5, ave_shf, e, h

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

• soil_moisture_4_r
• soil_moisture_3_r
• soil_moisture_1_r
• soil_moisture_5_r
• soil_moisture_2_r

SGP/EBBR/E22 - EBBR E22 Wind Speed Iced

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

• 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)

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

SGP EBBR E22 - E22 EBBR Data Incorrect During Logger Replacement

The data was incorrect during replacement of the logger.

• Raw data stream - documentation not supported

• corr_soil_heat_flow_2
• corr_soil_heat_flow_1
• corr_soil_heat_flow_4
• corr_soil_heat_flow_3
• corr_soil_heat_flow_5
• vapor_pressure_top
• Heat flux, sensible, at 1.5-m height, 30-min intervals(sensible_heat_flux)
• temp_reference
• Wind speed, lower, 1-min avg(wspd_arith_mean)
• temp_air_bottom
• Average soil heat flow at the surface(surface_soil_heat_flux_avg)
• temp_trh_top
• Wind speed vector mean(wspd_vec_mean)
• energy_storage_change_1
• vapor_pressure_bottom
• home_signal_30
• Heat flux, latent, at 1.5-m height, 30-min intervals(latent_heat_flux)
• temp_trh_bottom
• rh_bottom_fraction
• bowen_ratio
• soil_moisture_5
• Radiation, net(net_radiation)
• soil_moisture_1
• soil_moisture_2
• soil_moisture_3
• soil_moisture_4
• soil_heat_capacity_5
• soil_heat_capacity_4
• soil_heat_capacity_3
• soil_heat_flow_2
• soil_heat_flow_3
• soil_heat_capacity_2
• soil_heat_capacity_1
• soil_heat_flow_1
• energy_storage_change_3
• energy_storage_change_2
• energy_storage_change_5
• energy_storage_change_4
• home_signal_15
• wdir_vec_std
• soil_heat_flow_5
• soil_heat_flow_4
• Soil temperature mean 5(soil_temp_5)
• Soil temperature mean 2(soil_temp_2)
• Soil temperature mean 1(soil_temp_1)
• Soil temperature mean 4(soil_temp_4)
• Soil temperature mean 3(soil_temp_3)
• Wind direction, vector, lower, 1-min avg(wdir_vec_mean)
• temp_air_top
• Barometric Pressure(atmos_pressure)
• rh_top_fraction
• surface_soil_heat_flux_2
• surface_soil_heat_flux_1
• surface_soil_heat_flux_4
• surface_soil_heat_flux_3
• surface_soil_heat_flux_5

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

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

SGP EBBR E22 - E22 EBBR Soil Moisture Lower Than Measurement Capability

The indicated measurements were incorrect because soil moisture dropped below (sometimes 
even negative) the ability of the probes to measure it.

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

• soil_moisture_4_r
• soil_moisture_3_r
• soil_moisture_1_r
• soil_moisture_1_rr
• soil_moisture_5_r
• soil_moisture_3_rr
• soil_moisture_4_rr
• soil_moisture_2_r
• soil_moisture_5_rr
• soil_moisture_2_rr

SGP EBBR E22 - E22 EBBR Soil Moisture #3 Lower Than Can Be Measured

The soil moisture was too low to be measured correctly by probe #3.

• Heat flux, latent, at 1.5-m height, 30-min intervals(latent_heat_flux)
• soil_heat_capacity_3
• Heat flux, sensible, at 1.5-m height, 30-min intervals(sensible_heat_flux)
• energy_storage_change_3
• Average soil heat flow at the surface(surface_soil_heat_flux_avg)
• surface_soil_heat_flux_3
• soil_moisture_3

• soil_moisture_3_rr
• soil_moisture_3_r

SGP EBBR E22 - E22 EBBR Net Radiation Incorrect

Water inside the domes of the net radiometer caused measurements from it to be incorrect.  
Calculated latent and sensible heat fluxes were therefore incorrect also.

• 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)
• Radiation, net(net_radiation)

• Radiation, net(net_radiation)

• net_radiation_mv

SGP EBBR E22 - E22 EBBR Data Incorrect During 6 Month Checks

The data was incorrect during the 6 month checks.

• corr_soil_heat_flow_2
• corr_soil_heat_flow_1
• corr_soil_heat_flow_4
• corr_soil_heat_flow_3
• corr_soil_heat_flow_5
• vapor_pressure_top
• Heat flux, sensible, at 1.5-m height, 30-min intervals(sensible_heat_flux)
• temp_reference
• Wind speed, lower, 1-min avg(wspd_arith_mean)
• temp_air_bottom
• Average soil heat flow at the surface(surface_soil_heat_flux_avg)
• temp_trh_top
• Wind speed vector mean(wspd_vec_mean)
• energy_storage_change_1
• vapor_pressure_bottom
• Heat flux, latent, at 1.5-m height, 30-min intervals(latent_heat_flux)
• rh_bottom_fraction
• temp_trh_bottom
• bowen_ratio
• soil_moisture_5
• Radiation, net(net_radiation)
• soil_moisture_1
• soil_moisture_2
• soil_moisture_3
• soil_moisture_4
• soil_heat_capacity_5
• soil_heat_capacity_4
• soil_heat_capacity_3
• soil_heat_flow_2
• soil_heat_capacity_2
• soil_heat_flow_3
• soil_heat_capacity_1
• soil_heat_flow_1
• energy_storage_change_3
• energy_storage_change_2
• energy_storage_change_5
• energy_storage_change_4
• wdir_vec_std
• soil_heat_flow_5
• soil_heat_flow_4
• Soil temperature mean 5(soil_temp_5)
• Soil temperature mean 2(soil_temp_2)
• Soil temperature mean 1(soil_temp_1)
• Soil temperature mean 4(soil_temp_4)
• Soil temperature mean 3(soil_temp_3)
• Wind direction, vector, lower, 1-min avg(wdir_vec_mean)
• temp_air_top
• Barometric Pressure(atmos_pressure)
• rh_top_fraction
• surface_soil_heat_flux_2
• surface_soil_heat_flux_1
• surface_soil_heat_flux_4
• surface_soil_heat_flux_3
• surface_soil_heat_flux_5

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

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

SGP EBBR E22 - E22 EBBR 30 Minute Data Incorrect After Missing Data

Complete soil temperature information is not available
when the data is missing for the previous half hour.
Since soil temperature difference with time cannot be 
computed properly, the selected calculated quantities are incorrect.

• Heat flux, sensible, at 1.5-m height, 30-min intervals(sensible_heat_flux)
• energy_storage_change_3
• energy_storage_change_2
• energy_storage_change_5
• energy_storage_change_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)
• energy_storage_change_1
• surface_soil_heat_flux_2
• surface_soil_heat_flux_1
• surface_soil_heat_flux_4
• surface_soil_heat_flux_3
• surface_soil_heat_flux_5

SGP/EBBR/E22 - 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:  1650, 1655, 1700, 1705, 1710, 1715, 1720, 1725, 1730, 1735
15 minute: 1700, 1715, 1730, 1745
30 minute: 1700, 1730, 1800

(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.

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

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

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

SGP/EBBR/E22 - 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.

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

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

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

SGP/EBBR/E22 - 6 Month Checks

The indicated measurements were incorrect during the 6 month checks.

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

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

• temp_air_left
• temp_air_right

SGP/EBBR/E22 - Annual Calibration Changeout

On 6 November 1996 the EBBR changeout for annual calibration occurred at 
E22, Cordell, OK.  SEBS unit 7 was removed and unit 3 was installed.  Between 
1300 and 2300 GMT no data or incorrect data was collected; most of the data 
is missing.  Data for half hour 1930 GMT on 7 November is incorrect; 3 month 
calibration checks were being performed.

• corr_soil_heat_flow_2
• corr_soil_heat_flow_1
• corr_soil_heat_flow_4
• corr_soil_heat_flow_3
• corr_soil_heat_flow_5
• base_time
• vapor_pressure_top
• Heat flux, sensible, at 1.5-m height, 30-min intervals(sensible_heat_flux)
• temp_reference
• Wind speed, lower, 1-min avg(wspd_arith_mean)
• temp_air_bottom
• Average soil heat flow at the surface(surface_soil_heat_flux_avg)
• lat
• temp_trh_top
• alt
• Wind speed vector mean(wspd_vec_mean)
• lon
• energy_storage_change_1
• vapor_pressure_bottom
• home_signal_30
• Heat flux, latent, at 1.5-m height, 30-min intervals(latent_heat_flux)
• temp_trh_bottom
• rh_bottom_fraction
• bowen_ratio
• soil_moisture_5
• Radiation, net(net_radiation)
• soil_moisture_1
• soil_moisture_2
• soil_moisture_3
• soil_moisture_4
• soil_heat_capacity_5
• soil_heat_capacity_4
• soil_heat_capacity_3
• soil_heat_flow_2
• soil_heat_flow_3
• soil_heat_capacity_2
• soil_heat_capacity_1
• soil_heat_flow_1
• energy_storage_change_3
• energy_storage_change_2
• energy_storage_change_5
• energy_storage_change_4
• home_signal_15
• time_offset
• wdir_vec_std
• soil_heat_flow_5
• soil_heat_flow_4
• Soil temperature mean 5(soil_temp_5)
• Soil temperature mean 2(soil_temp_2)
• Soil temperature mean 1(soil_temp_1)
• Soil temperature mean 4(soil_temp_4)
• Soil temperature mean 3(soil_temp_3)
• Wind direction, vector, lower, 1-min avg(wdir_vec_mean)
• temp_air_top
• Barometric Pressure(atmos_pressure)
• rh_top_fraction
• surface_soil_heat_flux_2
• surface_soil_heat_flux_1
• surface_soil_heat_flux_4
• surface_soil_heat_flux_3
• surface_soil_heat_flux_5

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

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

SGP/EBBR/E22 - All Measurements Zero

The measurements are often all zero the first period after a CR10 restart, as occurred 
here.

• Raw data stream - documentation not supported

• corr_soil_heat_flow_2
• corr_soil_heat_flow_1
• corr_soil_heat_flow_4
• corr_soil_heat_flow_3
• corr_soil_heat_flow_5
• vapor_pressure_top
• Heat flux, sensible, at 1.5-m height, 30-min intervals(sensible_heat_flux)
• temp_reference
• Wind speed, lower, 1-min avg(wspd_arith_mean)
• temp_air_bottom
• Average soil heat flow at the surface(surface_soil_heat_flux_avg)
• temp_trh_top
• Wind speed vector mean(wspd_vec_mean)
• energy_storage_change_1
• vapor_pressure_bottom
• home_signal_30
• Heat flux, latent, at 1.5-m height, 30-min intervals(latent_heat_flux)
• temp_trh_bottom
• rh_bottom_fraction
• bowen_ratio
• soil_moisture_5
• Radiation, net(net_radiation)
• soil_moisture_1
• soil_moisture_2
• soil_moisture_3
• soil_moisture_4
• soil_heat_capacity_5
• soil_heat_capacity_4
• soil_heat_capacity_3
• soil_heat_flow_2
• soil_heat_capacity_2
• soil_heat_flow_3
• soil_heat_capacity_1
• soil_heat_flow_1
• energy_storage_change_3
• energy_storage_change_2
• energy_storage_change_5
• energy_storage_change_4
• home_signal_15
• wdir_vec_std
• soil_heat_flow_5
• soil_heat_flow_4
• Soil temperature mean 5(soil_temp_5)
• Soil temperature mean 2(soil_temp_2)
• Soil temperature mean 1(soil_temp_1)
• Soil temperature mean 4(soil_temp_4)
• Soil temperature mean 3(soil_temp_3)
• Wind direction, vector, lower, 1-min avg(wdir_vec_mean)
• temp_air_top
• Barometric Pressure(atmos_pressure)
• rh_top_fraction
• surface_soil_heat_flux_2
• surface_soil_heat_flux_1
• surface_soil_heat_flux_4
• surface_soil_heat_flux_3
• surface_soil_heat_flux_5

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

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

SGP/EBBR/E22 - AEM Hung or High Home Signals

The automatic exchange mechanism hung some times and continued to switch at other times, 
although with high home signal values.  If home signal values are not in the proper 
ranges, the gradient calculation is not performed properly by the CR10 program.  Affected flux 
measurements cannot be recalculated.

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

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

• temp_air_left
• temp_air_right

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/E22 - Data Incorrect during 6 month checks

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

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

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

• temp_air_left
• temp_air_right

SGP/EBBR/E22 - AEM Hung between home positions

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

There is no work-around to this problem.

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

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

• temp_air_left
• temp_air_right

SGP/EBBR/E22 - Water inside Broken Net Rad Dome

The net radiation measurement is incorrect. Measurements 
calculated using net radiation are also incorrect.  

No work-around is possible for this situation.

• 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)
• Radiation, net(net_radiation)

• Radiation, net(net_radiation)

SGP/EBBR/E22 - home30 too large

The home30 measurements sometimes exceeded 34.9999, resulting in the
qc flag being set.

However, this does not create any data quality issues.  The qc flag is
set just to provide an alert that the automatic exchange mechanism may have a problem; in 
this case data was not affected.

An electronics repair solved the problem.

• home_signal_30

• home_signal

• home_signal

SGP/EBBR/E22 -  6 Month Checks

Many measurements were incorrect while the AEM was positioned with both aspirators at the 
same height for comparison checks.

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

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

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

SGP/EBBR/E22 - AEM Hung Inbetween Home Positions

The AEM was hung inbetween home positions.

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

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

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

SGP/EBBR/E22 - AEM Home Signals Too High

The AEM home signals were too large at times during the indicated period;
it has been determined by the vendor that this is usually caused by electrical noise in 
the vicinity. When the 30 minute data shows a home 30 signal of 35 or more, the bowen 
ratio, and sensible and latent heat flux 
measurements are incorrect 

Removing the jumper between 4L and AG on the CR10 and adding a jumper to Multiplexer 2, 
Set 6, between L1 and L2 fixed the problem.  The
vendor intends to make this modification to all EBBR systems as they return
for re-calibration.

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

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

SGP/EBBR/E22  - Water in Net Radiometer, Surface Fluxes Incorrect

The net radiometer top dome was punctured by migrating birds.  This alone does not cause 
incorrect net radiation measurements.  However, when it subsequently rains, water collects 
in the bottom dome, causing the net radiation measurements to be too large during the 
day and too small at night.

• 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)
• Radiation, net(net_radiation)

• Radiation, net(net_radiation)

• net_radiation_mv

SGP/EBBR/E22 - 6 Month Checks

Many measurements were incorrect while the AEM was positioned with both aspirators at the 
same height for comparison checks.

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

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

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

SGP/EBBR/E22  - Wind Speed Sensor Frozen By Ice Storm

The wind speed sensor was frozen stopped by ice from a storm.  The wind speed 
and residual wind speed measurements are incorrect.

• 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)

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

SGP/EBBR/E22 - Wind Direction Sensor Frozen By Ice Storm

The wind direction sensor was frozen stopped by ice from a storm.  
The wind direction, sigma_wd, and residual wind speed 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_std
• Wind direction, vector, lower, 1-min avg(wdir_vec_mean)
• Wind speed vector mean(wspd_vec_mean)

• wdir_vec_mean_mv

SGP/EBBR/E22 - Wind Speed Sensor Bearings Worn

Wind speed was too low and/or often at or near zero due to
               worn bearings in the wind speed sensor.  Sensor was replaced
               3/17/04.

• 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)

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

SGP/EBBR/E22  - Wind Speed Frozen Stopped By Ice

An ice storm froze the wind speed sensor to a stopped condition.

The wind speed and residual wind speed measurements are incorrect.

This sensor failure does not affect the sensible and latent heat fluxes.

• 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)

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

SGP/EBBR/E22  - Wind Direction Frozen Stopped By Ice

The wind direction sensor was frozen stopped by ice from a storm.  
The wind direction, sigma_wd, and residual wind speed 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_std
• Wind direction, vector, lower, 1-min avg(wdir_vec_mean)
• Wind speed vector mean(wspd_vec_mean)

SGP/EBBR/E22 - Net Radiation Incorrect

Rain filled the bottom of the net radiometer with water, resulting
in very high net radiations.  Net radiation is incorrect during this period,
also causing sensible and latent heat fluxes to be incorrect.

• 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)
• Radiation, net(net_radiation)

• Radiation, net(net_radiation)

SGP/EBBR/E22 - Water In Net Radiometer

Water entered the Net Radiometer through a cracked upper dome, causing the
net radiation values to be too large.  As a result, latent and sensible heat flux values 
are also incorrect.

• 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)
• Radiation, net(net_radiation)

• Radiation, net(net_radiation)

SGP/EBBR/E22 - 6 Month Checks

Many measurements were incorrect while the AEM was positioned with both aspirators at the 
same height for comparison checks.

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

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

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

SGP/EBBR/E22  - Wind Speed Frozen Stopped By Ice Storm

An ice storm froze the wind speed sensor to a stopped condition.

The wind speed and residual wind speed measurements are incorrect.

This sensor failure does not affect the sensible and latent heat fluxes.

• 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)

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

SGP/EBBR/E22  - Wind Direction Frozen Stopped By Ice Storm

The wind direction sensor was frozen stopped by ice from a storm.  
The wind direction, sigma_wd, and residual wind speed 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_std
• Wind direction, vector, lower, 1-min avg(wdir_vec_mean)
• Wind speed vector mean(wspd_vec_mean)

• wdir_vec_mean_mv

SGP/EBBR/E22  - Wind Speed Frozen Stopped By Ice

An ice storm froze the wind speed sensor to a stopped condition.

The wind speed and residual wind speed measurements are incorrect.

This sensor failure does not affect the sensible and latent heat fluxes.

• 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)

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

SGP/EBBR/E22  - Wind Direction Frozen Stopped By Ice

The wind direction sensor was frozen stopped by ice from a storm.  
The wind direction, sigma_wd, and residual wind speed 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_std
• Wind direction, vector, lower, 1-min avg(wdir_vec_mean)
• Wind speed vector mean(wspd_vec_mean)

• wdir_vec_mean_mv

SGP/EBBR/E22 - Net Radiation Too Low - Top Dome Broken

Net radiation values were too low because of a broken top dome.

• 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)
• Radiation, net(net_radiation)

• Radiation, net(net_radiation)

• net_radiation_mv

SGP/EBBR/E22 - Improved EBBR CR10 Program

Effective 20050330.1930, the EBBR.E20 CR10 program was revised to improve 
the quality of the primary measurements as follows:
   
1) An RMS procedure is used to determine max and min limits of acceptable
soil heat flow.  This is applied to the individual soil sets.  Measurements
outside the limits are rejected and the measurements within the limits are
used to calculate the average soil heat flow.
   
2) Max and min limits are used to determine incorrect values of net
radiation, sensible heat flux (h), latent heat flux (e), and automatic
exchange mechanism (AEM) signal.  If AEM signal is outside the limits, h 
and e are set to 999s.  If net radiation is outside the limits, h and e are 
set to 999s. If h or e are outside the limits, h and e are set to 999s.
   
Virtually no incorrect soil measurement will affect the primary 
measurements of h and e.
   
By setting h and e to 999s, it can be easily seen that the primary 
variables are incorrect; no other interpretation is possible.
   
Prior to 20050330, the improved CR10 program was NOT in effect.  DQRs have
been submitted for known instances of incorrect soil measurements which
affected the quality of the primary measurements of h and e.
   
Note: the DQR begin date is the begin date of the sgp30ebbrE20.b1 data
stream.  The earlier version of the CR10 program was also used on previous
EBBR datastream names (e.g. sgp30ebbrE20.a1).

• 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)
• Average soil heat flow at the surface(surface_soil_heat_flux_avg)

SGP/EBBR/E22 - Net Radiation Incorrect; Sensible and Latent Heat Fluxes Incorrect

The net radiometer top dome was broken and water got inside, making the net radiation, and 
sensible and latent heat flux measurements incorrect.

• 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)
• Radiation, net(net_radiation)

• Radiation, net(net_radiation)

• net_radiation_mv

SGP/EBBR/E22 - Average Soil Heat Flux Incorrect

A typo in the version 9 EBBR program caused average soil heat flow to be zero, resulting 
in both sensible and latent heat fluxes being approximately 20 watts per meter squared too 
large during the middle of the day.

• 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)
• Average soil heat flow at the surface(surface_soil_heat_flux_avg)

SGP/EBBR/E22 - metadata corrections

On 20050723, a series of metadata corrections and additions were completed.  These 
metadata changes apply to all EBBR.E22 data collected by ARM back to the installation of the 
instrument in April 1993. Please see the current metadata for correct information.  These 
changes do not affect data values or quality.	

The changes are summarized below:
1) Update of "sensor location" information
2) Addition of installation dates for the systems
3) Correction of soil type
4) Correction of soil moisture units (from "by volume" to "gravimetric")

• base_time

• base_time

• base_time

SGP/EBBR/E22 - Sensible and Latent Heat Fluxes Incorrect

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

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

• temp_air_left
• temp_air_right

SGP/EBBR/E22 - Fluxes Incorrect When Soil Heat Flow #3 Out of Range

When soil heat flow #3 exceeded the range limit in the EBBR program, it was replaced with 
9999es.  This caused the ave_shf and the sensible and latent heat fluxes to be incorrect.

• 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)
• corr_soil_heat_flow_1
• soil_heat_flow_1
• surface_soil_heat_flux_1
• Average soil heat flow at the surface(surface_soil_heat_flux_avg)

SGP/EBBR/E22 - Wind Speed Sensor Frozen Stopped

The wind speed sensor was frozen to a stopped condition.

• 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)

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

SGP/EBBR/E22 - Net Radiation and Sensible and Latent Heat Fluxes Incorrect

Rain entered the net radiometer, causing net radiation, and thus sensible and latent heat 
fluxes, to be too large.

• 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)
• Radiation, net(net_radiation)

• Radiation, net(net_radiation)

• net_radiation_mv

SGP/EBBR/E22 - Soil Heat Flow #4 Incorrect - Sensible and Latent Heat Fluxes Sometimes 
Affected

Soil heat flow sensor #4 dropped to low values or offscale.

Sensible and latent heat fluxes were sometimes affected.

• 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)
• corr_soil_heat_flow_4
• soil_heat_flow_4
• surface_soil_heat_flux_4
• Average soil heat flow at the surface(surface_soil_heat_flux_avg)

• soil_heat_flow_4_mv

SGP/EBBR/E22 - Wind Direction Dependency of Surface Fluxes and General Data Quality 
Information

Beginning in FY2006, Data Quality Reports are not written for missing 
data or for situations when qc flags clearly show that the data is 
incorrect (this is true for most of the conditions listed below).  
DQRs are written for periods when data is incorrect, when the situation 
is not represented by qc flags in the data, and it's not obvious that 
the data should have been flagged as incorrect.

The EBBR data is only useful for particular wind directions at each 
Extended Facility.  Please use the following resources to help in 
interpreting the EBBR data.

1) qc flags in the EBBR data.

2) Instrument Mentor Monthly Summaries (IMMS) at http://www.db.arm.gov/IMMS/

3) SGP EF Surface Conditions Observations (EFSCO) at 
http://198.124.96.210:591/sfc_cond1/default.htm

4) Surface fluxes are valid only for the following wind directions
(in degrees):

0-49, 139-360

Note that there are wind directions at most sites for which the fetch
is insufficient and therefore EBBR data is invalid.  Appropriate 
fetch was determined from a 1/40 measurement height to fetch ratio, 
resulting in a required minimum fetch of 120 m.  Particular attention 
should be paid to the limited valid wind directions for the Central 
Facility EBBR.  The surface vegetation type for the EBBRs is grazed 
or ungrazed grassland (refer to the EFSCO for state).

5) Some conditions that commonly cause the EBBR primary measurements to 
be incorrect or missing follow:

a) Sensible and latent heat fluxes are not accurate during times when 
the Automatic Exchange Mechanism (AEM) is not functioning properly.  
The AEM switches the gradient measuring instrumentation between the 
top and bottom positions every 15 minutes; this reduces the effects of 
instrument offsets.  Sometimes the AEM does not reach it's full extent 
of travel, resulting in the home signal being zero.  

b) Sensible and latent heat fluxes are sometimes incorrect when surface 
soil heat flow is out of range, as seen in the average soil heat flux 
(ave_shf).

c) Very light winds may be seen at nights for brief periods. Wind 
direction flops around a lot during low wind conditions (< 1.5 m/s) 
and is often unreliable during those periods.

d) Missing data periods occur at times; this is usually a site data 
system collection/communication problem; it can also occur during 
replacement of the system with a newly calibrated unit.  Missing data 
is sometimes filled in later from manual or automatic re-collection of 
the data.

• bowen_ratio
• corr_soil_heat_flow_2
• corr_soil_heat_flow_1
• corr_soil_heat_flow_4
• corr_soil_heat_flow_3
• corr_soil_heat_flow_5
• soil_moisture_5
• Radiation, net(net_radiation)
• base_time
• soil_moisture_1
• soil_moisture_2
• soil_moisture_3
• soil_moisture_4
• vapor_pressure_top
• soil_heat_capacity_5
• soil_heat_capacity_4
• Heat flux, sensible, at 1.5-m height, 30-min intervals(sensible_heat_flux)
• soil_heat_capacity_3
• soil_heat_flow_2
• soil_heat_capacity_2
• soil_heat_flow_3
• temp_reference
• soil_heat_capacity_1
• soil_heat_flow_1
• Wind speed, lower, 1-min avg(wspd_arith_mean)
• energy_storage_change_3
• energy_storage_change_2
• energy_storage_change_5
• energy_storage_change_4
• home_signal_15
• temp_air_bottom
• time_offset
• wdir_vec_std
• soil_heat_flow_5
• soil_heat_flow_4
• Soil temperature mean 5(soil_temp_5)
• Average soil heat flow at the surface(surface_soil_heat_flux_avg)
• Soil temperature mean 2(soil_temp_2)
• Soil temperature mean 1(soil_temp_1)
• lat
• temp_trh_top
• Soil temperature mean 4(soil_temp_4)
• alt
• Soil temperature mean 3(soil_temp_3)
• Wind speed vector mean(wspd_vec_mean)
• lon
• energy_storage_change_1
• vapor_pressure_bottom
• Wind direction, vector, lower, 1-min avg(wdir_vec_mean)
• temp_air_top
• home_signal_30
• Barometric Pressure(atmos_pressure)
• Heat flux, latent, at 1.5-m height, 30-min intervals(latent_heat_flux)
• rh_bottom_fraction
• temp_trh_bottom
• rh_top_fraction
• surface_soil_heat_flux_2
• surface_soil_heat_flux_1
• surface_soil_heat_flux_4
• surface_soil_heat_flux_3
• surface_soil_heat_flux_5

SGP/EBBR/E22 - Wind Direction Incorrect

Wind direction was flat-lining at 135 degrees and occasionally changed to 0.4 degrees.

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

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

• wdir_vec_mean_mv

SGP/EBBR/E22 - H and LE Incorrect

Soil Heat Flow 1 bounced around and went offscale at times, resulting in the EBBR program 
setting sensible and latent heat fluxes to 9999es.

The problem ended during a PM visit, possibly because of routine checks and tightening of 
leads in terminal strips.

• 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)
• corr_soil_heat_flow_1
• soil_heat_flow_1
• surface_soil_heat_flux_1
• Average soil heat flow at the surface(surface_soil_heat_flux_avg)

• soil_heat_flow_1_mv

SGP/EBBR/E22 - Wind Speed Incorrect

The wind speed sensor was frozen stopped by freezing rain.

• 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)

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

SGP/EBBR/E22 - Air Temperature Sensor malfunction

The right air temperature probe (thermocouple) malfunctioned during the
periods stated above at Cordell, OK (E22).  It was replaced on December 21,
1993 and good data began again with the 1830 GMT half hour average.  For the
periods of interest, 5 and 30 minute values of tair_top and tair_bot are
incorrect when the right probe was in the specified position; 15 minute values of
tair_r are incorrect; and 30 minute values of bowen, e, and h are incorrect.  None of
these values are recoverable or recalculatable through the use of other
quantities since both air temperature probes are needed to determine bowen
ratio.

• bowen_ratio
• 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)
• temp_air_top
• temp_air_bottom

• temp_air_bottom
• temp_air_top

• temp_air_right

SGP/EBBR/E22 - Incorrect averaging interval at E22

On November 9, 1993 version 4 of the EBBR program installed at Cordell, OK
(E22) was mistakenly modified in one area during the process of modifying a
calibration in another part of the program.  The mistaken modification was
a change in the execution interval from 30 seconds to 10 seconds.  This
modification remained in the program until November 22, 1993 when it was
discovered and changed back to a 30 second execution interval.  The
modification produced no ill effects as the execution interval only
changes sampling and averaging periods.  A 10 second execution interval
results in three times as many samples being taken, which, when averaged,
should actually produce more accurate results.  Therefore, data quality was
not affected.  This PIF was written only to document the fact that the
mistaken modification was made, and when it was made.

• bowen_ratio
• corr_soil_heat_flow_2
• corr_soil_heat_flow_1
• corr_soil_heat_flow_4
• corr_soil_heat_flow_3
• corr_soil_heat_flow_5
• soil_moisture_5
• Radiation, net(net_radiation)
• soil_moisture_1
• base_time
• soil_moisture_2
• soil_moisture_3
• soil_moisture_4
• vapor_pressure_top
• soil_heat_capacity_5
• soil_heat_capacity_4
• soil_heat_capacity_3
• soil_heat_flow_2
• Heat flux, sensible, at 1.5-m height, 30-min intervals(sensible_heat_flux)
• soil_heat_flow_3
• soil_heat_capacity_2
• temp_reference
• soil_heat_capacity_1
• soil_heat_flow_1
• Wind speed, lower, 1-min avg(wspd_arith_mean)
• energy_storage_change_3
• energy_storage_change_2
• energy_storage_change_5
• energy_storage_change_4
• home_signal_15
• temp_air_bottom
• time_offset
• wdir_vec_std
• soil_heat_flow_5
• soil_heat_flow_4
• Soil temperature mean 5(soil_temp_5)
• Soil temperature mean 2(soil_temp_2)
• Average soil heat flow at the surface(surface_soil_heat_flux_avg)
• lat
• Soil temperature mean 1(soil_temp_1)
• Soil temperature mean 4(soil_temp_4)
• temp_trh_top
• Soil temperature mean 3(soil_temp_3)
• alt
• Wind speed vector mean(wspd_vec_mean)
• lon
• energy_storage_change_1
• vapor_pressure_bottom
• Wind direction, vector, lower, 1-min avg(wdir_vec_mean)
• temp_air_top
• home_signal_30
• Barometric Pressure(atmos_pressure)
• Heat flux, latent, at 1.5-m height, 30-min intervals(latent_heat_flux)
• temp_trh_bottom
• rh_bottom_fraction
• rh_top_fraction
• surface_soil_heat_flux_2
• surface_soil_heat_flux_1
• surface_soil_heat_flux_4
• surface_soil_heat_flux_3
• surface_soil_heat_flux_5

SGP/EBBR/E22 - Net Radiometer Hemisphere Changes

The upper hemisphere of the net radiometer at the site was punctured
allowing water to collect in the lower (and sometimes upper) section of the sensor. The 
punctures are most likely the result of migratory birds (a problem that we have experienced 
almost every year here at ANL also). The punctures (and water in some net radiometers) 
did not result in obvious invalidation of the data.

Whether there is water in the lower hemisphere or not, a small puncture of the upper 
hemisphere would not have a major effect on the net radiation measurement.  Significant 
amounts of water in the lower
hemisphere should have a major effect on nighttime measurements particularly, although 
that effect is hard to detect in the data. 
The date when the puncture occurred is approximate - but is certainly 
no more than two weeks before the hemisphere was replaced.

• 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)
• Radiation, net(net_radiation)

• Radiation, net(net_radiation)

• net_radiation_mv

SGP/EBBR/E22 - Wind Speed Cups Frozen

Freezing rain, snow, and below freezing conditions during 18-19 January
1995 caused the wind speed sensor cups to freeze in a stopped state at E22,
Cordell, OK on 18 January 1995.  When temperatures rose to above freezing on
19 January, the ice thawed and the cups turned freely again.

Measurements affected by the stalled wind speed sensor include:

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

• 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)

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

SGP/EBBR/E22 - Reprocess: Soil Heat Flow Sensor 4 Incorrect Data

Soil heat flow sensor #4 periodically output incorrect values during the 
period indicated.  The output often indicated large negative heat flow.  The
sensor was replaced on March 19, 1996, which corrected the problem.  The data 
affected (and thus incorrect) includes:

15 minute: mv_hft4
30 minute: shf4, c_shf4, g4, ave_shf, e, h.

The dates and times (GMT) of incorrect values are listed below.  Only half 
hour data times are listed.  

01/31/96  1500 (shf4 only)
02/10/96  0230-1300, 1400-1600
02/11/96  0100-0900, 1030-1400, 1730-2330
02/12/96  0000-0100, 1200-1230, 1600-1830
02/13/96  0130-0230, 1430, 1600-1700
02/14/96  0130-0230
02/23/96  0330-0530, 1200-2330
02/24/96  0000-0200
02/29/96  0000
03/03/96  0130-0200, 1500-1830
03/04/96  0100-0230, 0400-1530
03/05/96  1200-1430, 1630-1830
03/06/96  0200-2330
03/07/96  0000-0430, 2030-2130, 2330
03/08/96  0330-1730
03/10/96  0400-1130
03/12/96  0400-1130, 1430-1600
03/13/96  0830-1130
03/15/96  0400-2200
03/16/96  0400-0830, 1030-1200, 1500-1700
03/17/96  0630, 0730-2030
03/18/96  0300-1730
03/19/96  0130-2330
03/20/96  0000-1430, 1700-1830
03/21/96  0230
03/22/96  0400, 1600-1700
03/23/96  0400-1930
03/24/96  2200-2330
03/25/96  0000-1500
03/27/96  1800-2000

The latent and sensible heat fluxes can be recalculated by using only soil
heat flows 1, 2, 3, and 5 to calculate the average soil heat flow,

ave_shf = (g1 + g2 + g3 + g5)/4
e = -(q + ave_shf)/(1 + bowen)
h = -(e + ave_shf + q)

• 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)
• corr_soil_heat_flow_4
• soil_heat_flow_4
• Average soil heat flow at the surface(surface_soil_heat_flux_avg)
• surface_soil_heat_flux_4

• soil_heat_flow_4_mv

SGP/EBBR/E22 - 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.  The period of incorrect
data for the EBBR is listed in the times indicated; data times affected 
do not include the beginning time and do include the ending time 
(data files are denoted by the end time).

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

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

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

SGP/EBBR/E22 - Annual Calibration Changeout

On 6 November 1996 the EBBR changeout for annual calibration occurred at 
E22, Cordell, OK.  SEBS unit 7 was removed and unit 3 was installed.  Between 
1300 and 2300 GMT no data or incorrect data was collected; most of the data 
is missing.  Data for half hour 1930 GMT on 7 November is incorrect; 3 month 
calibration checks were being performed.

• corr_soil_heat_flow_2
• corr_soil_heat_flow_1
• corr_soil_heat_flow_4
• corr_soil_heat_flow_3
• corr_soil_heat_flow_5
• base_time
• vapor_pressure_top
• Heat flux, sensible, at 1.5-m height, 30-min intervals(sensible_heat_flux)
• temp_reference
• Wind speed, lower, 1-min avg(wspd_arith_mean)
• temp_air_bottom
• Average soil heat flow at the surface(surface_soil_heat_flux_avg)
• lat
• temp_trh_top
• alt
• Wind speed vector mean(wspd_vec_mean)
• lon
• energy_storage_change_1
• vapor_pressure_bottom
• home_signal_30
• Heat flux, latent, at 1.5-m height, 30-min intervals(latent_heat_flux)
• rh_bottom_fraction
• temp_trh_bottom
• bowen_ratio
• soil_moisture_5
• Radiation, net(net_radiation)
• soil_moisture_1
• soil_moisture_2
• soil_moisture_3
• soil_moisture_4
• soil_heat_capacity_5
• soil_heat_capacity_4
• soil_heat_capacity_3
• soil_heat_flow_2
• soil_heat_capacity_2
• soil_heat_flow_3
• soil_heat_capacity_1
• soil_heat_flow_1
• energy_storage_change_3
• energy_storage_change_2
• energy_storage_change_5
• energy_storage_change_4
• home_signal_15
• time_offset
• wdir_vec_std
• soil_heat_flow_5
• soil_heat_flow_4
• Soil temperature mean 5(soil_temp_5)
• Soil temperature mean 2(soil_temp_2)
• Soil temperature mean 1(soil_temp_1)
• Soil temperature mean 4(soil_temp_4)
• Soil temperature mean 3(soil_temp_3)
• Wind direction, vector, lower, 1-min avg(wdir_vec_mean)
• temp_air_top
• Barometric Pressure(atmos_pressure)
• rh_top_fraction
• surface_soil_heat_flux_2
• surface_soil_heat_flux_1
• surface_soil_heat_flux_4
• surface_soil_heat_flux_3
• surface_soil_heat_flux_5

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

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

SGP/EBBR/E22 - EBBR 3 Month Checks - 10 EFs

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 these periods 
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 correct gradients.  Checks performed before or after the 
AEM is disabled also lead to some incorrect data.  Incorrect 5, 15 minute and 
half hour data occurs for periods indicated.

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

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

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

SGP/EBBR/E22 - Reprocess: E22 Soil Heat Flow Sensor # 5 Incorrect Data

Soil heat flow sensor #5 frequently produced large negative (and incorrect)
values during the period above.  The problem ended during a PM visit by 
site operations.  However, there is no documentation by Site Operations in
the instrumentation report or corrective maintenance report that Site
Operations personnel took action to correct the problem.  Site Operations 
also told me that they have no record of any changes or corrective 
maintenance.  Apparently, something fortuitous happened during the PM to 
correct the problem.  The start date and time of the problem cannot be 
determined exactly, but it did begin during a period of missing data from 
Feb. 14-25, 1997.

Values affected (and thus incorrect) include:

15 minute: mv_hft5
30 minute: shf5, c_shf5, g5, ave_shf, e, h.

The latent and sensible heat fluxes can be recalculated by using only soil
heat flows 1, 2, 3, and 4 to calculate the average soil heat flow,

ave_shf = (g1 + g2 + g3 + g4)/4

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

h = -(e + ave_shf + q)

• 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)
• corr_soil_heat_flow_5
• soil_heat_flow_5
• Average soil heat flow at the surface(surface_soil_heat_flux_avg)

• soil_heat_flow_5_mv

SGP/EBBR/E22 - Right Aspirator Unit Stolen

On 13 June 1997, vandals stole the right AEM aspirator unit, including the
thermocouple and T/RH probe inside.  These were replaced on 16 July 1997.

Incorrect data fields during the period above are:

5 minute:  tair_top, tair_bot, thum_top, thum_bot, hum_top, hum_bot, 
vp_top, vp_bot

15 minute: rr_thum_r, mv_hum_r, tair_r

30 minute: tair_top, tair_bot, thum_top, thum_bot, hum_top, hum_bot, 
vp_top, vp_bot, bowen, e, h

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

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

• rh_right_mv
• temp_trh_right_rr
• temp_air_right

SGP/EBBR/E22 - Reprocess: E22 EBBR Soil Heat Flow Probe #5 Incorrect Data

Soil heat flow probe #5 produced large negative (and incorrect)
values during the period above.  The probe was replaced. Somehow, two half
hour records were produced at 1900 GMT as a result, the first record having
9s for the data fields; the second record is correct.

Values affected (and thus incorrect) include:

15 minute: mv_hft5
30 minute: shf5, c_shf5, g5, ave_shf, e, h.

The latent and sensible heat fluxes can be recalculated by using only soil
heat flows 1, 2, 3, and 4 to calculate the average soil heat flow,

ave_shf = (g1 + g2 + g3 + g4)/4

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

h = -(e + ave_shf + q)

• 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)
• corr_soil_heat_flow_5
• soil_heat_flow_5
• Average soil heat flow at the surface(surface_soil_heat_flux_avg)
• surface_soil_heat_flux_5

• soil_heat_flow_5_mv

SGP/EBBR/E22 - EBBR Biannual Checks

During EBBR 6 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 these periods 
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 correct gradients.  Checks performed before or after the 
AEM is disabled also lead to some incorrect data.  Incorrect 5, 15 minute and 
half hour data occurs for periods indicated.

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

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

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

SGP/EBBR/E22 - Reprocess: E22 Soil Moisture Values Off End of Calibration at High Soil 
Moistures

Intermittently, since November 1997 soil moisture probes 1, 2, and 3
indicate small positive or else negative values when soil moisture is
high (greater than 35%).  This situation is similar to that at the Cement
EBBR, although the soil at Cordell is not capable of holding as much water
as that at Cement. The cause of the problem is inadequate range in the
calibration curve equation.  Very high soil moisture cannot be obtained
with the calibration soil used by REBS.  The soil moisture equations
could be manipulated to allow larger soil moistures to be calculated.
However, the infrequency of occurence does not justify doing so.

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 moistures 1 and 2 are incorrect,

ave_shf = (g3 + g4 + g5)/3

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

h = -(e + ave_shf +q),


If soil moistures 1, 2, and 3 are incorrect,

ave_shf = (g4 + g5)/2

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

h = -(e + ave_shf +q),

etc.

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

• soil_moisture_4_r
• soil_moisture_3_r
• soil_moisture_1_r
• soil_moisture_5_r
• soil_moisture_2_r

SGP/EBBR/E22 - Low Battery - Resulting In Incorrect Data

A low battery condition (less than 10.5 volts) caused a number of data
fields to be incorrect at some times and all data fields to be incorrect
at a more limited number of times.  All data fields are suspect when the
battery voltage drops below 10.5 volts because the CR10 cannot operate 
properly.  Some sensors are affected slightly (i.e. pressure) at slightly
larger voltages.  The low battery condition resulted from an initially 
weak battery and a week of extremely low solar radiation (from heavy 
cloudiness) on the solar panel that provides most of the charging of the
battery.

Comments added by Marv Wesely: 
David Cook has been working with Dave Breedlove to try to assess the age
of the batteries.  The dates on the batteries needs to be read during 
site visits and provided to David C.  It's quite possible that they need
to be replaced.  It's work in progress, though slow at times.

• corr_soil_heat_flow_2
• corr_soil_heat_flow_1
• corr_soil_heat_flow_4
• corr_soil_heat_flow_3
• corr_soil_heat_flow_5
• base_time
• vapor_pressure_top
• Heat flux, sensible, at 1.5-m height, 30-min intervals(sensible_heat_flux)
• temp_reference
• Wind speed, lower, 1-min avg(wspd_arith_mean)
• temp_air_bottom
• Average soil heat flow at the surface(surface_soil_heat_flux_avg)
• lat
• temp_trh_top
• alt
• Wind speed vector mean(wspd_vec_mean)
• lon
• energy_storage_change_1
• vapor_pressure_bottom
• home_signal_30
• Heat flux, latent, at 1.5-m height, 30-min intervals(latent_heat_flux)
• rh_bottom_fraction
• temp_trh_bottom
• bowen_ratio
• soil_moisture_5
• Radiation, net(net_radiation)
• soil_moisture_1
• soil_moisture_2
• soil_moisture_3
• soil_moisture_4
• soil_heat_capacity_5
• soil_heat_capacity_4
• soil_heat_flow_2
• soil_heat_capacity_3
• soil_heat_capacity_2
• soil_heat_flow_3
• soil_heat_capacity_1
• soil_heat_flow_1
• energy_storage_change_3
• energy_storage_change_2
• energy_storage_change_5
• energy_storage_change_4
• home_signal_15
• time_offset
• wdir_vec_std
• soil_heat_flow_5
• soil_heat_flow_4
• Soil temperature mean 5(soil_temp_5)
• Soil temperature mean 2(soil_temp_2)
• Soil temperature mean 1(soil_temp_1)
• Soil temperature mean 4(soil_temp_4)
• Soil temperature mean 3(soil_temp_3)
• Wind direction, vector, lower, 1-min avg(wdir_vec_mean)
• temp_air_top
• Barometric Pressure(atmos_pressure)
• rh_top_fraction
• surface_soil_heat_flux_2
• surface_soil_heat_flux_1
• surface_soil_heat_flux_4
• surface_soil_heat_flux_3
• surface_soil_heat_flux_5

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

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

SGP/EBBR/E22 - 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 these periods 
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 correct gradients.  Checks performed before 
or after the AEM is disabled also lead to some incorrect data.  Incorrect 5,
15 minute and half hour data occurs for the period above.

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

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

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

SGP/EBBR/E22 - Six Month Checks

During EBBR 6 month checks (formally called 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 these periods 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 correct gradients.  Checks 
performed just before or after the AEM is disabled also lead to some 
incorrect data.  Incorrect 5, 15 minute and half hour data occurs for the 
period indicated.

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

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

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

SGP/EBBR/E22 - Battery Voltage Low, Data Incorrect

Battery voltages less than 10.4 volts occurred much of the time.  All data
should be considered incorrect when the voltage is less than 10.4 volts.

• Raw data stream - documentation not supported

• corr_soil_heat_flow_2
• corr_soil_heat_flow_1
• corr_soil_heat_flow_4
• corr_soil_heat_flow_3
• corr_soil_heat_flow_5
• base_time
• vapor_pressure_top
• Heat flux, sensible, at 1.5-m height, 30-min intervals(sensible_heat_flux)
• temp_reference
• Wind speed, lower, 1-min avg(wspd_arith_mean)
• temp_air_bottom
• Average soil heat flow at the surface(surface_soil_heat_flux_avg)
• lat
• temp_trh_top
• alt
• Wind speed vector mean(wspd_vec_mean)
• lon
• energy_storage_change_1
• vapor_pressure_bottom
• home_signal_30
• Heat flux, latent, at 1.5-m height, 30-min intervals(latent_heat_flux)
• rh_bottom_fraction
• temp_trh_bottom
• bowen_ratio
• soil_moisture_5
• Radiation, net(net_radiation)
• soil_moisture_1
• soil_moisture_2
• soil_moisture_3
• soil_moisture_4
• soil_heat_capacity_5
• soil_heat_capacity_4
• soil_heat_capacity_3
• soil_heat_flow_2
• soil_heat_capacity_2
• soil_heat_flow_3
• soil_heat_capacity_1
• soil_heat_flow_1
• energy_storage_change_3
• energy_storage_change_2
• energy_storage_change_5
• energy_storage_change_4
• home_signal_15
• time_offset
• wdir_vec_std
• soil_heat_flow_5
• soil_heat_flow_4
• Soil temperature mean 5(soil_temp_5)
• Soil temperature mean 2(soil_temp_2)
• Soil temperature mean 1(soil_temp_1)
• Soil temperature mean 4(soil_temp_4)
• Soil temperature mean 3(soil_temp_3)
• Wind direction, vector, lower, 1-min avg(wdir_vec_mean)
• temp_air_top
• Barometric Pressure(atmos_pressure)
• rh_top_fraction
• surface_soil_heat_flux_2
• surface_soil_heat_flux_1
• surface_soil_heat_flux_4
• surface_soil_heat_flux_3
• surface_soil_heat_flux_5

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

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

SGP/EBBR/E22 - Wind Direction Data Incorrect

The wind direction sensor was iced stopped by freezing rain, 
resulting in the following values being incorrect:

5 minute:  res_ws, wind_d, sigma_wd
15 minute: mv_wind_d
30 minute: res_ws, wind_d, sigma_wd

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

• Raw data stream - documentation not supported

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

• wdir_vec_mean_mv

SGP/EBBR/E22 - Right Aspirator Fan Replaced

Replacement of the right aspirator fan on the EBBR AEM caused temperature,
relative humidity, and vapor pressure data to be incorrect for the 2045 and
2100 GMT 15 minute data and Bowen ratio, sensible heat flux, and latent
heat flux to be incorrect for the 2100 GMT data.

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

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