DQRs for Session: 119436 User:dmfoperCompleted: 05-06-2009

Data Quality Reports for Session: 119436 User: dmfoper Completed: 05/06/2009

TABLE OF CONTENTS

DQR ID	Subject	Data Streams Affected
D020716.14	SGP/EBBR/E18 - 6 Month Checks	sgp15ebbrE18.a1, sgp15ebbrE18.b1, sgp30ebbrE18.a1, sgp30ebbrE18.b1, sgp5ebbrE18.a1
D020717.21	SGP/EBBR/E18 - AEM Hung	sgp15ebbrE18.a1, sgp15ebbrE18.b1, sgp30ebbrE18.a1, sgp30ebbrE18.b1, sgp5ebbrE18.a1
D020717.24	SGP/EBBR/E18 - Left Air Temperature Incorrect	sgp15ebbrE18.a1, sgp15ebbrE18.b1, sgp30ebbrE18.a1, sgp30ebbrE18.b1, sgp5ebbrE18.a1
D020717.25	SGP/EBBR/E18 - Reference Temperature Incorrect	sgp15ebbrE18.a1, sgp15ebbrE18.b1, sgp30ebbrE18.a1, sgp30ebbrE18.b1, sgp5ebbrE18.a1
D030110.23	SGP/EBBR/E18 - Data Incorrect during 6 month checks	sgp15ebbrE18.a1, sgp15ebbrE18.b1, sgp30ebbrE18.a1, sgp30ebbrE18.b1, sgp5ebbrE18.a1
D030115.12	SGP/EBBR/E18 - Data Mostly Zero Following Logger Restart	sgp15ebbrE18.a1, sgp15ebbrE18.b1, sgp30ebbrE18.a1, sgp30ebbrE18.b1, sgp5ebbrE18.a1
D030711.22	SGP/EBBR/E18 - AEM Hung	sgp15ebbrE18.a1, sgp15ebbrE18.b1, sgp30ebbrE18.a1, sgp30ebbrE18.b1, sgp5ebbrE18.a1
D030712.19	SGP/EBBR/E18 - 6 Month Checks	sgp15ebbrE18.a1, sgp15ebbrE18.b1, sgp30ebbrE18.a1, sgp30ebbrE18.b1, sgp5ebbrE18.a1
D030919.9	SGP/EBBR/E18 - Water in Net Radiometer; Surface Fluxes are Incorrect	sgp15ebbrE18.a1, sgp15ebbrE18.b1, sgp30ebbrE18.a1, sgp30ebbrE18.b1, sgp5ebbrE18.a1
D031204.16	SGP/EBBR/E18 - 6 Month Checks	sgp15ebbrE18.b1, sgp30ebbrE18.b1, sgp5ebbrE18.b1
D040206.1	SGP/EBBR/E18 - AEM Sitting At Home 15 Position	sgp15ebbrE18.b1, sgp30baebbrE18.c1, sgp30ebbrE18.b1, sgp5ebbrE18.b1
D040304.17	SGP/EBBR/E18 - Wind Speed Frozen Stopped By Ice	sgp15ebbrE18.b1, sgp30ebbrE18.b1, sgp5ebbrE18.b1
D051111.13	SGP/EBBR/E18 - metadata corrections	sgp15ebbrE18.b1, sgp30ebbrE18.b1, sgp5ebbrE18.b1

DQRID : D020716.14

Start Date	Start Time	End Date	End Time
04/30/2002	2000	04/30/2002	2031

Subject:	SGP/EBBR/E18 - 6 Month Checks
DataStreams:	sgp15ebbrE18.a1, sgp15ebbrE18.b1, sgp30ebbrE18.a1, sgp30ebbrE18.b1, sgp5ebbrE18.a1
Description:	The indicated measurements were incorrect during the 6 month checks.
Measurements:	sgp15ebbrE18.a1: Right air temperature(tair_r) Left air temperature(tair_l) sgp30ebbrE18.b1: rh_top_fraction bowen_ratio latent_heat_flux rh_bottom_fraction temp_air_top sensible_heat_flux temp_air_bottom temp_trh_top vapor_pressure_bottom temp_trh_bottom vapor_pressure_top sgp15ebbrE18.b1: temp_air_left temp_air_right sgp5ebbrE18.a1: bottom vapor pressure(vp_bot) Temperature of the top humidity chamber(thum_top) Bottom humidity(hum_bot) top air temperature(tair_top) Top humidity(hum_top) bottom air temperature(tair_bot) Temperature of bottom humidity sensor chamber(thum_bot) top vapor pressure(vp_top) sgp30ebbrE18.a1: top vapor pressure(vp_top) ratio of sensible/latent heat fluxes (Bowen ratio)(bowen) bottom vapor pressure(vp_bot) top air temperature(tair_top) Bottom humidity(hum_bot) Temperature of bottom humidity sensor chamber(thum_bot) bottom air temperature(tair_bot) latent heat flux(e) Temperature of the top humidity chamber(thum_top) h(h) Top humidity(hum_top)

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DQRID : D020717.21

Start Date	Start Time	End Date	End Time
11/14/2001	1945	11/14/2001	2001
11/25/2001	0215	11/25/2001	1901
11/28/2001	1145	11/28/2001	1501
11/29/2001	0745	11/29/2001	0931
11/29/2001	1415	11/30/2001	0431
12/02/2001	0145	12/02/2001	0201
12/03/2001	0045	12/03/2001	0101
12/24/2001	2015	12/24/2001	2031
12/25/2001	1915	12/25/2001	2031
01/18/2002	0115	01/18/2002	0201
01/22/2002	1615	01/22/2002	1631
01/24/2002	2115	01/24/2002	2131
01/28/2002	1345	01/28/2002	1401
02/13/2002	2215	02/14/2002	0801
02/25/2002	2345	02/26/2002	0001
03/14/2002	1515	03/29/2002	1831
04/06/2002	0030	04/17/2002	1401
04/18/2002	2230	04/30/2002	2031
05/01/2002	0300	05/28/2002	2031

Subject:	SGP/EBBR/E18 - AEM Hung
DataStreams:	sgp15ebbrE18.a1, sgp15ebbrE18.b1, sgp30ebbrE18.a1, sgp30ebbrE18.b1, sgp5ebbrE18.a1
Description:	The automatic exchange mechanism did not work properly for a number of time periods. The Bowen ratio, latent heat flux, and sensible heat flux were incorrect also during this condition.
Measurements:	sgp15ebbrE18.a1: Right air temperature(tair_r) Left air temperature(tair_l) sgp30ebbrE18.b1: rh_top_fraction bowen_ratio latent_heat_flux rh_bottom_fraction temp_air_top sensible_heat_flux temp_air_bottom temp_trh_top vapor_pressure_bottom temp_trh_bottom vapor_pressure_top sgp15ebbrE18.b1: temp_air_left temp_air_right sgp5ebbrE18.a1: bottom vapor pressure(vp_bot) Temperature of the top humidity chamber(thum_top) Bottom humidity(hum_bot) top air temperature(tair_top) Top humidity(hum_top) bottom air temperature(tair_bot) Temperature of bottom humidity sensor chamber(thum_bot) top vapor pressure(vp_top) sgp30ebbrE18.a1: top vapor pressure(vp_top) ratio of sensible/latent heat fluxes (Bowen ratio)(bowen) bottom vapor pressure(vp_bot) top air temperature(tair_top) Bottom humidity(hum_bot) Temperature of bottom humidity sensor chamber(thum_bot) bottom air temperature(tair_bot) latent heat flux(e) Temperature of the top humidity chamber(thum_top) h(h) Top humidity(hum_top)

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DQRID : D020717.24

Start Date	Start Time	End Date	End Time
04/09/2002	1900	05/14/2002	1846

Subject:	SGP/EBBR/E18 - Left Air Temperature Incorrect
DataStreams:	sgp15ebbrE18.a1, sgp15ebbrE18.b1, sgp30ebbrE18.a1, sgp30ebbrE18.b1, sgp5ebbrE18.a1
Description:	The left air temperature was incorrect much of the time, causing the Bowen ratio, sensible heat flux, and latent heat flux to be incorrect also.
Measurements:	sgp15ebbrE18.a1: Left air temperature(tair_l) sgp30ebbrE18.b1: bowen_ratio latent_heat_flux temp_air_top sensible_heat_flux temp_air_bottom sgp15ebbrE18.b1: temp_air_left sgp5ebbrE18.a1: bottom air temperature(tair_bot) top air temperature(tair_top) sgp30ebbrE18.a1: ratio of sensible/latent heat fluxes (Bowen ratio)(bowen) bottom air temperature(tair_bot) latent heat flux(e) top air temperature(tair_top) h(h)

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DQRID : D020717.25

Start Date	Start Time	End Date	End Time
04/17/2002	1430	04/17/2002	1431

Subject:	SGP/EBBR/E18 - Reference Temperature Incorrect
DataStreams:	sgp15ebbrE18.a1, sgp15ebbrE18.b1, sgp30ebbrE18.a1, sgp30ebbrE18.b1, sgp5ebbrE18.a1
Description:	The reference temperature was incorrect during the checks of the left air temperature sensor, leading to all gradient measurements, Bowen ratio, sensible heat flux, latent heat flux, soil temperature, and soil moisture measurements being incorrect.
Measurements:	sgp15ebbrE18.a1: Right air temperature(tair_r) Left air temperature(tair_l) sgp30ebbrE18.b1: latent_heat_flux soil_moisture_5 soil_temp_5 soil_temp_4 soil_temp_3 energy_storage_change_3 energy_storage_change_5 soil_heat_capacity_1 temp_air_top energy_storage_change_2 energy_storage_change_1 temp_air_bottom soil_moisture_1 soil_moisture_2 bowen_ratio soil_moisture_4 soil_heat_capacity_2 temp_reference soil_temp_1 sensible_heat_flux soil_heat_capacity_3 energy_storage_change_4 soil_heat_capacity_4 soil_heat_capacity_5 soil_temp_2 soil_moisture_3 sgp15ebbrE18.b1: temp_air_right temp_air_left sgp5ebbrE18.a1: Temperature of the top humidity chamber(thum_top) top air temperature(tair_top) bottom air temperature(tair_bot) Temperature of bottom humidity sensor chamber(thum_bot) sgp30ebbrE18.a1: Soil heat capacity 1(cs1) ratio of sensible/latent heat fluxes (Bowen ratio)(bowen) Soil heat capacity 3(cs3) top air temperature(tair_top) 0-5 cm integrated soil temperature, site 4(ts4) volumetric soil moisture, site 4(sm4) Reference Thermistor Temperature(tref) volumetric soil moisture, site 2(sm2) 0-5 cm integrated soil temperature, site 2(ts1) latent heat flux(e) Soil heat capacity 5(cs5) h(h) 0-5 cm integrated soil temperature, site 5(ts5) 0-5 cm change in soil heat storage with time, site 5(ces5) Soil heat capacity 2(cs2) 0-5 cm integrated soil temperature, site 3(ts3) Soil heat capacity 4(cs4) 0-5 cm change in soil heat storage with time, site 3(ces3) volumetric soil moisture, site 5(sm5) 0-5 cm change in soil heat storage with time, site 2(ces2) 0-5 cm change in soil heat storage with time, site 2(ces1) 0-5 cm integrated soil temperature, site 2(ts2) 0-5 cm change in soil heat storage with time, site 4(ces4) volumetric soil moisture, site 1(sm1) bottom air temperature(tair_bot) volumetric soil moisture, site 3(sm3)

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DQRID : D030110.23

Start Date	Start Time	End Date	End Time
11/25/2002	2215	11/25/2002	2245

Subject:	SGP/EBBR/E18 - Data Incorrect during 6 month checks
DataStreams:	sgp15ebbrE18.a1, sgp15ebbrE18.b1, sgp30ebbrE18.a1, sgp30ebbrE18.b1, sgp5ebbrE18.a1
Description:	Some of the measurements are incorrect during the 6 month checks.
Measurements:	sgp15ebbrE18.a1: Right air temperature(tair_r) Left air temperature(tair_l) sgp30ebbrE18.b1: rh_top_fraction bowen_ratio latent_heat_flux rh_bottom_fraction temp_air_top sensible_heat_flux temp_air_bottom temp_trh_top vapor_pressure_bottom temp_trh_bottom vapor_pressure_top sgp15ebbrE18.b1: temp_air_left temp_air_right sgp5ebbrE18.a1: bottom vapor pressure(vp_bot) Temperature of the top humidity chamber(thum_top) Bottom humidity(hum_bot) top air temperature(tair_top) Top humidity(hum_top) bottom air temperature(tair_bot) Temperature of bottom humidity sensor chamber(thum_bot) top vapor pressure(vp_top) sgp30ebbrE18.a1: top vapor pressure(vp_top) ratio of sensible/latent heat fluxes (Bowen ratio)(bowen) bottom vapor pressure(vp_bot) top air temperature(tair_top) Bottom humidity(hum_bot) Temperature of bottom humidity sensor chamber(thum_bot) bottom air temperature(tair_bot) latent heat flux(e) Temperature of the top humidity chamber(thum_top) h(h) Top humidity(hum_top)

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DQRID : D030115.12

Start Date	Start Time	End Date	End Time
11/12/2002	2200	11/12/2002	2229

Subject:	SGP/EBBR/E18 - Data Mostly Zero Following Logger Restart
DataStreams:	sgp15ebbrE18.a1, sgp15ebbrE18.b1, sgp30ebbrE18.a1, sgp30ebbrE18.b1, sgp5ebbrE18.a1
Description:	Most of the measurements were zero, which normally happens after a datalogger restart. The restart on 11/12/02 occurred after replacement of soil heat flow #1.
Measurements:	sgp15ebbrE18.a1: Wind direction (relative to true north)(mv_wind_d) Home signal(mv_home) Reference temperature(rr_tref) Soil temperature 4(rr_ts4) Soil temperature 3(rr_ts3) Soil temperature 1(rr_ts1) Right relative humidity(mv_hum_r) Left relative humidity(mv_hum_l) Left air temperature(tair_l) Soil moisture 1(r_sm1) Soil moisture 2(r_sm2) Soil moisture 3(r_sm3) Battery(bat) Temperature of right humidity sensor chamber(rr_thum_r) Soil moisture 4(r_sm4) Soil heat flow 1(mv_hft1) scalar wind speed(wind_s) Soil temperature 2(rr_ts2) Soil temperature 5(rr_ts5) Temperature of left humidity sensor chamber(rr_thum_l) Net radiation(mv_q) Soil moisture 5(r_sm5) Soil heat flow 4(mv_hft4) Soil heat flow 3(mv_hft3) Soil heat flow 2(mv_hft2) Soil heat flow 5(mv_hft5) Right air temperature(tair_r) Atmospheric pressure(mv_pres) sgp30ebbrE18.b1: net_radiation latent_heat_flux home_signal_15 wspd_vec_mean home_signal_30 soil_heat_capacity_1 corr_soil_heat_flow_5 surface_soil_heat_flux_4 soil_moisture_1 soil_moisture_2 vapor_pressure_top wdir_vec_std bowen_ratio surface_soil_heat_flux_5 wspd_arith_mean surface_soil_heat_flux_3 surface_soil_heat_flux_avg soil_heat_flow_5 corr_soil_heat_flow_3 soil_temp_1 energy_storage_change_4 corr_soil_heat_flow_4 soil_moisture_3 soil_temp_2 rh_top_fraction soil_moisture_5 soil_temp_5 soil_temp_4 soil_temp_3 energy_storage_change_3 energy_storage_change_5 Barometric Pressure(atmos_pressure) surface_soil_heat_flux_2 corr_soil_heat_flow_2 temp_air_top surface_soil_heat_flux_1 energy_storage_change_2 energy_storage_change_1 temp_air_bottom corr_soil_heat_flow_1 wdir_vec_mean soil_heat_flow_4 temp_trh_top soil_moisture_4 soil_heat_flow_3 soil_heat_capacity_2 rh_bottom_fraction temp_reference soil_heat_flow_1 sensible_heat_flux soil_heat_capacity_3 soil_heat_capacity_4 soil_heat_capacity_5 soil_heat_flow_2 vapor_pressure_bottom temp_trh_bottom sgp15ebbrE18.b1: soil_heat_flow_1_mv soil_temp_1_rr rh_right_mv net_radiation_mv temp_air_right wspd_arith_mean temp_air_left soil_temp_3_rr temp_reference_rr soil_moisture_5_rr soil_temp_5_rr soil_temp_2_rr rh_left_mv soil_heat_flow_5_mv atmos_pressure_mv soil_temp_4_rr soil_moisture_1_rr wdir_vec_mean_mv temp_trh_right_rr soil_heat_flow_3_mv soil_heat_flow_2_mv soil_heat_flow_4_mv soil_moisture_4_rr home_signal soil_moisture_3_rr soil_moisture_2_rr temp_trh_left_rr battery_voltage sgp5ebbrE18.a1: bottom vapor pressure(vp_bot) Temperature of the top humidity chamber(thum_top) Retrieved pressure profile(pres) net radiation(q) bottom air temperature(tair_bot) Temperature of bottom humidity sensor chamber(thum_bot) Reference Thermistor Temperature(tref) vector wind speed(res_ws) scalar wind speed(wind_s) top air temperature(tair_top) standard deviation of wind direction (sigma theta)(sigma_wd) top vapor pressure(vp_top) Bottom humidity(hum_bot) Top humidity(hum_top) Home signal(home) wind direction (relative to true north)(wind_d) sgp30ebbrE18.a1: 5 cm soil heat flow corrected for soil moisture content, site 5(c_shf5) Soil heat capacity 3(cs3) 5 cm soil heat flow corrected for soil moisture content, site 3(c_shf3) 5 cm soil heat flow corrected for soil moisture content, site 2(c_shf2) soil heat flow, site 2(g2) soil heat flow, site 4(g4) volumetric soil moisture, site 4(sm4) 5 cm soil heat flow corrected for soil moisture content, site 4(c_shf4) 0-5 cm integrated soil temperature, site 2(ts1) Temperature of the top humidity chamber(thum_top) h(h) Soil heat capacity 4(cs4) 5 cm soil heat flow, site 1(shf1) wind direction (relative to true north)(wind_d) 5 cm soil heat flow, site 2(shf2) 0-5 cm integrated soil temperature, site 2(ts2) volumetric soil moisture, site 1(sm1) soil heat flow, site 3(g3) 5 cm soil heat flow, site 5(shf5) vector wind speed(res_ws) average surface soil heat flow(ave_shf) net radiation(q) Soil heat capacity 1(cs1) top vapor pressure(vp_top) ratio of sensible/latent heat fluxes (Bowen ratio)(bowen) 5 cm soil heat flow corrected for soil moisture content, site 1(c_shf1) bottom vapor pressure(vp_bot) top air temperature(tair_top) 0-5 cm integrated soil temperature, site 4(ts4) Bottom humidity(hum_bot) 5 cm soil heat flow, site 4(shf4) Reference Thermistor Temperature(tref) volumetric soil moisture, site 2(sm2) Exchange mechanism position indicator (15 to 30 min)(home_30) Temperature of bottom humidity sensor chamber(thum_bot) latent heat flux(e) Soil heat capacity 5(cs5) scalar wind speed(wind_s) 0-5 cm integrated soil temperature, site 5(ts5) 0-5 cm change in soil heat storage with time, site 5(ces5) Soil heat capacity 2(cs2) 5 cm soil heat flow, site 3(shf3) 0-5 cm integrated soil temperature, site 3(ts3) Top humidity(hum_top) 0-5 cm change in soil heat storage with time, site 3(ces3) volumetric soil moisture, site 5(sm5) Retrieved pressure profile(pres) soil heat flow, site 5(g5) 0-5 cm change in soil heat storage with time, site 2(ces2) 0-5 cm change in soil heat storage with time, site 2(ces1) 0-5 cm change in soil heat storage with time, site 4(ces4) bottom air temperature(tair_bot) Exchange mechanism position indicator (0 to 15 min)(home_15) standard deviation of wind direction (sigma theta)(sigma_wd) soil heat flow, site 1(g1) volumetric soil moisture, site 3(sm3)

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DQRID : D030711.22

Start Date	Start Time	End Date	End Time
04/01/2003	2145	04/01/2003	2200

Subject:	SGP/EBBR/E18 - AEM Hung
DataStreams:	sgp15ebbrE18.a1, sgp15ebbrE18.b1, sgp30ebbrE18.a1, sgp30ebbrE18.b1, sgp5ebbrE18.a1
Description:	The AEM was hung inbetween home positions, causing many measurements to be incorrect.
Measurements:	sgp15ebbrE18.a1: Temperature of left humidity sensor chamber(rr_thum_l) Right relative humidity(mv_hum_r) Temperature of right humidity sensor chamber(rr_thum_r) Left relative humidity(mv_hum_l) Right air temperature(tair_r) Left air temperature(tair_l) sgp30ebbrE18.b1: rh_top_fraction bowen_ratio latent_heat_flux rh_bottom_fraction temp_air_top sensible_heat_flux temp_air_bottom temp_trh_top vapor_pressure_bottom temp_trh_bottom vapor_pressure_top sgp15ebbrE18.b1: temp_air_left temp_trh_left_rr temp_trh_right_rr rh_right_mv temp_air_right rh_left_mv sgp5ebbrE18.a1: bottom vapor pressure(vp_bot) Temperature of the top humidity chamber(thum_top) Bottom humidity(hum_bot) top air temperature(tair_top) Top humidity(hum_top) bottom air temperature(tair_bot) Temperature of bottom humidity sensor chamber(thum_bot) top vapor pressure(vp_top) sgp30ebbrE18.a1: top vapor pressure(vp_top) ratio of sensible/latent heat fluxes (Bowen ratio)(bowen) bottom vapor pressure(vp_bot) top air temperature(tair_top) Bottom humidity(hum_bot) Temperature of bottom humidity sensor chamber(thum_bot) bottom air temperature(tair_bot) latent heat flux(e) Temperature of the top humidity chamber(thum_top) h(h) Top humidity(hum_top)

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DQRID : D030712.19

Start Date	Start Time	End Date	End Time
04/15/2003	2120	04/15/2003	2215

Subject:	SGP/EBBR/E18 - 6 Month Checks
DataStreams:	sgp15ebbrE18.a1, sgp15ebbrE18.b1, sgp30ebbrE18.a1, sgp30ebbrE18.b1, sgp5ebbrE18.a1
Description:	Many measurements were incorrect while the AEM was positioned with both aspirators at the same height for comparison checks.
Measurements:	sgp15ebbrE18.a1: Temperature of left humidity sensor chamber(rr_thum_l) Right relative humidity(mv_hum_r) Temperature of right humidity sensor chamber(rr_thum_r) Left relative humidity(mv_hum_l) Right air temperature(tair_r) Left air temperature(tair_l) sgp30ebbrE18.b1: rh_top_fraction bowen_ratio latent_heat_flux rh_bottom_fraction temp_air_top sensible_heat_flux temp_air_bottom temp_trh_top vapor_pressure_bottom temp_trh_bottom vapor_pressure_top sgp15ebbrE18.b1: temp_air_left temp_trh_left_rr temp_trh_right_rr rh_right_mv temp_air_right rh_left_mv sgp5ebbrE18.a1: bottom vapor pressure(vp_bot) Temperature of the top humidity chamber(thum_top) Bottom humidity(hum_bot) top air temperature(tair_top) Top humidity(hum_top) bottom air temperature(tair_bot) Temperature of bottom humidity sensor chamber(thum_bot) top vapor pressure(vp_top) sgp30ebbrE18.a1: top vapor pressure(vp_top) ratio of sensible/latent heat fluxes (Bowen ratio)(bowen) bottom vapor pressure(vp_bot) top air temperature(tair_top) Bottom humidity(hum_bot) Temperature of bottom humidity sensor chamber(thum_bot) bottom air temperature(tair_bot) latent heat flux(e) Temperature of the top humidity chamber(thum_top) h(h) Top humidity(hum_top)

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DQRID : D030919.9

Start Date	Start Time	End Date	End Time
08/30/2003	1500	09/02/2003	2100

Subject:	SGP/EBBR/E18 - Water in Net Radiometer; Surface Fluxes are Incorrect
DataStreams:	sgp15ebbrE18.a1, sgp15ebbrE18.b1, sgp30ebbrE18.a1, sgp30ebbrE18.b1, sgp5ebbrE18.a1
Description:	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.
Measurements:	sgp15ebbrE18.a1: Net radiation(mv_q) sgp30ebbrE18.b1: net_radiation latent_heat_flux sensible_heat_flux sgp15ebbrE18.b1: net_radiation_mv sgp5ebbrE18.a1: net radiation(q) sgp30ebbrE18.a1: h(h) net radiation(q) latent heat flux(e)

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DQRID : D031204.16

Start Date	Start Time	End Date	End Time
10/28/2003	2225	10/28/2003	2315

Subject:	SGP/EBBR/E18 - 6 Month Checks
DataStreams:	sgp15ebbrE18.b1, sgp30ebbrE18.b1, sgp5ebbrE18.b1
Description:	Many measurements were incorrect while the AEM was positioned with both aspirators at the same height for comparison checks.
Measurements:	sgp5ebbrE18.b1: rh_bottom_fraction vapor_pressure_top temp_air_top temp_trh_bottom temp_trh_top rh_top_fraction vapor_pressure_bottom temp_air_bottom sgp30ebbrE18.b1: rh_top_fraction bowen_ratio latent_heat_flux rh_bottom_fraction temp_air_top sensible_heat_flux temp_air_bottom temp_trh_top vapor_pressure_bottom temp_trh_bottom vapor_pressure_top sgp15ebbrE18.b1: temp_air_left temp_trh_left_rr temp_trh_right_rr rh_right_mv temp_air_right rh_left_mv

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DQRID : D040206.1

Start Date	Start Time	End Date	End Time
01/26/2004	1915	04/13/2004	2045

Subject:	SGP/EBBR/E18 - AEM Sitting At Home 15 Position
DataStreams:	sgp15ebbrE18.b1, sgp30baebbrE18.c1, sgp30ebbrE18.b1, sgp5ebbrE18.b1
Description:	After replacement of the AEM on 1/26/04, it exchanged briefly, then sat at the home 15 position until another replacement was available.
Measurements:	sgp5ebbrE18.b1: rh_bottom_fraction vapor_pressure_top temp_air_top temp_trh_bottom temp_trh_top vapor_pressure_bottom rh_top_fraction temp_air_bottom sgp30ebbrE18.b1: rh_top_fraction bowen_ratio latent_heat_flux rh_bottom_fraction temp_air_top sensible_heat_flux temp_air_bottom temp_trh_top vapor_pressure_bottom temp_trh_bottom vapor_pressure_top sgp15ebbrE18.b1: temp_air_left temp_air_right sgp30baebbrE18.c1: Temperature of the top humidity chamber(thum_top) top air temperature(tair_top) bottom air temperature(tair_bot) bottom vapor pressure(vp_bot) Temperature of bottom humidity sensor chamber(thum_bot) h(h) Top humidity(hum_top) Best estimate Latent heat flux(ecomb) Aerodynamic Sensible heat flux(ah) ratio of sensible/latent heat fluxes (Bowen ratio)(bowen) Bottom humidity(hum_bot) Aerodynamic Latent heat flux(ale) top vapor pressure(vp_top) Best estimate Sensible heat flux(hcomb) latent heat flux(e)

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DQRID : D040304.17

Start Date	Start Time	End Date	End Time
01/28/2004	0140	01/28/2004	0305
02/05/2004	0145	02/05/2004	0520

Subject:	SGP/EBBR/E18 - Wind Speed Frozen Stopped By Ice
DataStreams:	sgp15ebbrE18.b1, sgp30ebbrE18.b1, sgp5ebbrE18.b1
Description:	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.
Measurements:	sgp5ebbrE18.b1: wspd_arith_mean wspd_vec_mean sgp30ebbrE18.b1: wspd_arith_mean wspd_vec_mean sgp15ebbrE18.b1: wspd_arith_mean

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DQRID : D051111.13

Start Date	Start Time	End Date	End Time
10/13/2003	0000	07/22/2005	2359

Subject:	SGP/EBBR/E18 - metadata corrections
DataStreams:	sgp15ebbrE18.b1, sgp30ebbrE18.b1, sgp5ebbrE18.b1
Description:	On 20050723, a series of metadata corrections and additions were completed. These metadata changes apply to all EBBR.E18 data collected by ARM back to the installation of the instrument in July 1997. 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")
Measurements:	sgp5ebbrE18.b1: base time(base_time) sgp30ebbrE18.b1: base time(base_time) sgp15ebbrE18.b1: base time(base_time)

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