DQR ID | Subject | Data Streams Affected |
---|
D040206.4 | SGP/EBBR/E19 - Low Battery Voltage Caused Incorrect Data | sgp15ebbrE19.b1, sgp30ebbrE19.b1, sgp5ebbrE19.b1 |
D040304.26 | SGP/EBBR/E19 - Wind Speed Frozen Stopped By Ice | sgp30ebbrE19.b1, sgp5ebbrE19.b1, sgp15ebbrE19.b1 |
D040407.2 | SGP/EBBR/E19 - Reprocess: Incorrect Net Rad Calibration Coefficient | sgp30baebbrE19.c1, sgp30ebbrE19.b1, sgp5ebbrE19.b1 |
D040608.7 | SGP/EBBR/E19 - AEM Hung Inbetween Home Positions | sgp15ebbrE19.b1, sgp30ebbrE19.b1, sgp5ebbrE19.b1 |
D041222.15 | SGP/EBBR/E19 - 6 Month Checks | sgp15ebbrE19.b1, sgp30ebbrE19.b1, sgp5ebbrE19.b1 |
D050206.13 | SGP/EBBR/E19 - Wind Speed Frozen Stopped By Ice Storm | sgp15ebbrE19.b1, sgp30ebbrE19.b1, sgp5ebbrE19.b1 |
D050207.9 | SGP/EBBR/E19 - Wind Direction Frozen Stopped By Ice Storm | sgp15ebbrE19.b1, sgp30ebbrE19.b1, sgp5ebbrE19.b1 |
D050215.20 | SGP/EBBR/E19 - Wind Speed Constant | sgp15ebbrE19.b1, sgp30ebbrE19.b1, sgp5ebbrE19.b1 |
D050324.2 | SGP/EBBR/E19 - Reprocess: Negative Net Rad calibrations | sgp30ebbrE19.b1, sgp5ebbrE19.b1 |
D050624.3 | SGP/EBBR/E19 - Net Radiation Incorrect - Cable Chewed by Rodents | sgp15ebbrE19.b1, sgp30ebbrE19.b1, sgp5ebbrE19.b1 |
D050719.12 | SGP/EBBR/E19 - Improved EBBR CR10 Program | sgp30ebbrE19.b1 |
D051106.27 | SGP/EBBR/E19 - Average Soil Heat Flux Incorrect | sgp30ebbrE19.b1 |
D051112.1 | SGP/EBBR/E19 - metadata corrections | sgp15ebbrE19.b1, sgp30ebbrE19.b1, sgp5ebbrE19.b1 |
D051214.2 | SGP/EBBR/E19 - Net Radiation, Sensible and Latent Heat Fluxes Incorrect | sgp15ebbrE19.b1, sgp30ebbrE19.b1, sgp5ebbrE19.b1 |
D051214.3 | SGP/EBBR/E19 - Incorrect Sensible and Latent Heat Fluxes | sgp15ebbrE19.b1, sgp30ebbrE19.b1, sgp5ebbrE19.b1 |
D061114.9 | SGP/EBBR/E19 - Sensible and Latent Heat Fluxes Incorrect | sgp30ebbrE19.b1 |
D080527.2 | SGP/EBBR/E19 - Sensible and latent heat flux and net radiation incorrect | sgp15ebbrE19.b1, sgp30ebbrE19.b1, sgp5ebbrE19.b1 |
D090313.4 | SGP/EBBR/E19 - Wind Speed Incorrect | sgp30ebbrE19.b1, sgp5ebbrE19.b1, sgp15ebbrE19.b1 |
Subject: | SGP/EBBR/E19 - Low Battery Voltage Caused Incorrect Data |
DataStreams: | sgp15ebbrE19.b1, sgp30ebbrE19.b1, sgp5ebbrE19.b1
|
Description: | Battery voltage less than 10.5 V caused much data to be questionable or incorrect. |
Measurements: | sgp15ebbrE19.b1: - soil_heat_flow_1_mv
- soil_moisture_4_rr
- soil_moisture_2_rr
- temp_air_left
- atmos_pressure_mv
- rh_left_mv
- soil_moisture_3_rr
- soil_heat_flow_3_mv
- soil_heat_flow_4_mv
- net_radiation_mv
- soil_temp_4_rr
- rh_right_mv
- soil_temp_1_rr
- temp_reference_rr
- soil_temp_2_rr
- soil_moisture_1_rr
- temp_trh_right_rr
- home_signal
- soil_moisture_5_rr
- soil_temp_3_rr
- Wind speed, lower, 1-min avg(wspd_arith_mean)
- wdir_vec_mean_mv
- soil_temp_5_rr
- temp_trh_left_rr
- soil_heat_flow_5_mv
- soil_heat_flow_2_mv
- temp_air_right
sgp5ebbrE19.b1: - temp_trh_top
- time
- Wind speed, lower, 1-min avg(wspd_arith_mean)
- wdir_vec_std
- temp_trh_bottom
- Barometric Pressure(atmos_pressure)
- vapor_pressure_top
- home_signal
- vapor_pressure_bottom
- Radiation, net(net_radiation)
- rh_top_fraction
- rh_bottom_fraction
- Wind direction, vector, lower, 1-min avg(wdir_vec_mean)
- temp_air_bottom
- temp_reference
- temp_air_top
- Wind speed vector mean(wspd_vec_mean)
sgp30ebbrE19.b1: - vapor_pressure_top
- Wind direction, vector, lower, 1-min avg(wdir_vec_mean)
- temp_trh_bottom
- soil_temp_5
- soil_temp_1
- soil_temp_2
- soil_temp_3
- soil_temp_4
- surface_soil_heat_flux_1
- soil_moisture_2
- surface_soil_heat_flux_2
- soil_moisture_1
- soil_moisture_4
- soil_moisture_3
- surface_soil_heat_flux_5
- surface_soil_heat_flux_3
- surface_soil_heat_flux_4
- rh_bottom_fraction
- Average soil heat flow at the surface(surface_soil_heat_flux_avg)
- Wind speed vector mean(wspd_vec_mean)
- Wind speed, lower, 1-min avg(wspd_arith_mean)
- soil_moisture_5
- Heat flux, sensible, at 1.5-m height, 30-min intervals(sensible_heat_flux)
- Heat flux, latent, at 1.5-m height, 30-min intervals(latent_heat_flux)
- temp_trh_top
- home_signal_30
- energy_storage_change_3
- energy_storage_change_2
- energy_storage_change_5
- energy_storage_change_4
- home_signal_15
- energy_storage_change_1
- Radiation, net(net_radiation)
- soil_heat_capacity_4
- soil_heat_capacity_5
- soil_heat_capacity_2
- soil_heat_capacity_3
- wdir_vec_std
- soil_heat_capacity_1
- bowen_ratio
- Barometric Pressure(atmos_pressure)
- corr_soil_heat_flow_4
- corr_soil_heat_flow_3
- corr_soil_heat_flow_2
- corr_soil_heat_flow_1
- vapor_pressure_bottom
- soil_heat_flow_4
- soil_heat_flow_5
- temp_air_bottom
- temp_reference
- temp_air_top
- rh_top_fraction
- corr_soil_heat_flow_5
- soil_heat_flow_1
- soil_heat_flow_2
- soil_heat_flow_3
|
Subject: | SGP/EBBR/E19 - Wind Speed Frozen Stopped By Ice |
DataStreams: | sgp30ebbrE19.b1, sgp5ebbrE19.b1, sgp15ebbrE19.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: | sgp15ebbrE19.b1: - Wind speed, lower, 1-min avg(wspd_arith_mean)
sgp5ebbrE19.b1: - Wind speed, lower, 1-min avg(wspd_arith_mean)
- Wind speed vector mean(wspd_vec_mean)
sgp30ebbrE19.b1: - Wind speed, lower, 1-min avg(wspd_arith_mean)
- Wind speed vector mean(wspd_vec_mean)
|
Subject: | SGP/EBBR/E19 - Reprocess: Incorrect Net Rad Calibration Coefficient |
DataStreams: | sgp30baebbrE19.c1, sgp30ebbrE19.b1, sgp5ebbrE19.b1
|
Description: | The net radiometer coefficient installed on 2/5/04 for nighttime (negative voltage
calibration) was incorrect.
Negative net radiations during the subject period can be multiplied by
0.9419 to get corrected net radiation measurements. The sensible (H)
and latent heat (LE) fluxes (which are very small at night anyway) can
be recalculated using the following equations (where B is Bowen ratio,
Rn is corrected net radiation, and G is soil heat flow):
LE = -(Rn + G)/(B + 1)
H = -(Rn + G + LE) |
Measurements: | sgp5ebbrE19.b1: - Radiation, net(net_radiation)
sgp30ebbrE19.b1: - Heat flux, latent, at 1.5-m height, 30-min intervals(latent_heat_flux)
- Radiation, net(net_radiation)
- Heat flux, sensible, at 1.5-m height, 30-min intervals(sensible_heat_flux)
sgp30baebbrE19.c1: - Corrected sensible heat flux(h)
- Heat flux, latent, aerodynamic(ale)
- Heat flux, sensible, aerodynamic(ah)
- Heat flux, latent(e)
- Radiation, net(q)
|
Subject: | SGP/EBBR/E19 - AEM Hung Inbetween Home Positions |
DataStreams: | sgp15ebbrE19.b1, sgp30ebbrE19.b1, sgp5ebbrE19.b1
|
Description: | The AEM hung inbetween home positions, producing a home signal of zero.
Sensible and latent heat fluxes during this period are incorrect. |
Measurements: | sgp15ebbrE19.b1: - temp_air_left
- temp_air_right
sgp5ebbrE19.b1: - temp_trh_bottom
- vapor_pressure_bottom
- temp_trh_top
- temp_air_top
- vapor_pressure_top
- rh_top_fraction
- temp_air_bottom
- rh_bottom_fraction
sgp30ebbrE19.b1: - temp_air_bottom
- Heat flux, latent, at 1.5-m height, 30-min intervals(latent_heat_flux)
- temp_trh_top
- temp_air_top
- rh_top_fraction
- vapor_pressure_top
- temp_trh_bottom
- rh_bottom_fraction
- bowen_ratio
- vapor_pressure_bottom
- Heat flux, sensible, at 1.5-m height, 30-min intervals(sensible_heat_flux)
|
Subject: | SGP/EBBR/E19 - 6 Month Checks |
DataStreams: | sgp15ebbrE19.b1, sgp30ebbrE19.b1, sgp5ebbrE19.b1
|
Description: | Many measurements were incorrect while the AEM was positioned with both aspirators at the
same height for comparison checks. |
Measurements: | sgp15ebbrE19.b1: - temp_air_left
- rh_right_mv
- rh_left_mv
- temp_trh_left_rr
- temp_trh_right_rr
- temp_air_right
sgp5ebbrE19.b1: - temp_trh_bottom
- temp_trh_top
- vapor_pressure_top
- temp_air_bottom
- vapor_pressure_bottom
- temp_air_top
- rh_top_fraction
- rh_bottom_fraction
sgp30ebbrE19.b1: - vapor_pressure_top
- temp_trh_bottom
- vapor_pressure_bottom
- temp_air_bottom
- Heat flux, latent, at 1.5-m height, 30-min intervals(latent_heat_flux)
- temp_trh_top
- temp_air_top
- rh_top_fraction
- rh_bottom_fraction
- bowen_ratio
- Heat flux, sensible, at 1.5-m height, 30-min intervals(sensible_heat_flux)
|
Subject: | SGP/EBBR/E19 - Wind Speed Frozen Stopped By Ice Storm |
DataStreams: | sgp15ebbrE19.b1, sgp30ebbrE19.b1, sgp5ebbrE19.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: | sgp15ebbrE19.b1: - Wind speed, lower, 1-min avg(wspd_arith_mean)
sgp5ebbrE19.b1: - Wind speed, lower, 1-min avg(wspd_arith_mean)
- Wind speed vector mean(wspd_vec_mean)
sgp30ebbrE19.b1: - Wind speed, lower, 1-min avg(wspd_arith_mean)
- Wind speed vector mean(wspd_vec_mean)
|
Subject: | SGP/EBBR/E19 - Wind Direction Frozen Stopped By Ice Storm |
DataStreams: | sgp15ebbrE19.b1, sgp30ebbrE19.b1, sgp5ebbrE19.b1
|
Description: | The wind direction sensor was frozen stopped by ice from a storm.
The wind direction, sigma_wd, and residual wind speed measurements
are incorrect. |
Measurements: | sgp15ebbrE19.b1:
sgp5ebbrE19.b1: - wdir_vec_std
- Wind direction, vector, lower, 1-min avg(wdir_vec_mean)
- Wind speed vector mean(wspd_vec_mean)
sgp30ebbrE19.b1: - Wind direction, vector, lower, 1-min avg(wdir_vec_mean)
- wdir_vec_std
- Wind speed vector mean(wspd_vec_mean)
|
Subject: | SGP/EBBR/E19 - Wind Speed Constant |
DataStreams: | sgp15ebbrE19.b1, sgp30ebbrE19.b1, sgp5ebbrE19.b1
|
Description: | Wind Speed was constant at 5 m/s during this period; the reason is unknown.
This sensor failure does not affect the sensible and latent heat fluxes. |
Measurements: | sgp15ebbrE19.b1: - Wind speed, lower, 1-min avg(wspd_arith_mean)
sgp5ebbrE19.b1: - Wind speed, lower, 1-min avg(wspd_arith_mean)
- Wind speed vector mean(wspd_vec_mean)
sgp30ebbrE19.b1: - Wind speed, lower, 1-min avg(wspd_arith_mean)
- Wind speed vector mean(wspd_vec_mean)
|
Subject: | SGP/EBBR/E19 - Reprocess: Negative Net Rad calibrations |
DataStreams: | sgp30ebbrE19.b1, sgp5ebbrE19.b1
|
Description: | The calibration for negative net radiation was incorrectly entered in the datalogger
program. |
Measurements: | sgp5ebbrE19.b1: - Radiation, net(net_radiation)
sgp30ebbrE19.b1: - Heat flux, latent, at 1.5-m height, 30-min intervals(latent_heat_flux)
- Radiation, net(net_radiation)
- Heat flux, sensible, at 1.5-m height, 30-min intervals(sensible_heat_flux)
|
Subject: | SGP/EBBR/E19 - Net Radiation Incorrect - Cable Chewed by Rodents |
DataStreams: | sgp15ebbrE19.b1, sgp30ebbrE19.b1, sgp5ebbrE19.b1
|
Description: | The net radiation measurement was incorrect after the net radiometer cable was chewed by
rodents. Sensible and latent heat fluxes were therefore incorrect. |
Measurements: | sgp15ebbrE19.b1:
sgp5ebbrE19.b1: - Radiation, net(net_radiation)
sgp30ebbrE19.b1: - Heat flux, latent, at 1.5-m height, 30-min intervals(latent_heat_flux)
- Radiation, net(net_radiation)
- Heat flux, sensible, at 1.5-m height, 30-min intervals(sensible_heat_flux)
|
Subject: | SGP/EBBR/E19 - Improved EBBR CR10 Program |
DataStreams: | sgp30ebbrE19.b1
|
Description: | Effective 20050331.1600, the EBBR.E19 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 20050331, 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 sgp30ebbrE19.b1 data
stream. The earlier version of the CR10 program was also used on previous
EBBR datastream names (e.g. sgp30ebbrE19.a1). |
Measurements: | sgp30ebbrE19.b1: - Heat flux, latent, at 1.5-m height, 30-min intervals(latent_heat_flux)
- Average soil heat flow at the surface(surface_soil_heat_flux_avg)
- Heat flux, sensible, at 1.5-m height, 30-min intervals(sensible_heat_flux)
|
Subject: | SGP/EBBR/E19 - Net Radiation, Sensible and Latent Heat Fluxes Incorrect |
DataStreams: | sgp15ebbrE19.b1, sgp30ebbrE19.b1, sgp5ebbrE19.b1
|
Description: | The net radiometer cable was chewed by an animal. Net Radiation, Sensible Heat Flux, and
Latent Heat Flux were incorrect during the stated periods. |
Measurements: | sgp15ebbrE19.b1:
sgp5ebbrE19.b1: - Radiation, net(net_radiation)
sgp30ebbrE19.b1: - Heat flux, latent, at 1.5-m height, 30-min intervals(latent_heat_flux)
- Radiation, net(net_radiation)
- Heat flux, sensible, at 1.5-m height, 30-min intervals(sensible_heat_flux)
|
Subject: | SGP/EBBR/E19 - Incorrect Sensible and Latent Heat Fluxes |
DataStreams: | sgp15ebbrE19.b1, sgp30ebbrE19.b1, sgp5ebbrE19.b1
|
Description: | The gradient measurements and latent and sensible heat fluxes were incorrect because the
AEM was not exchanging.
The problem was fixed by replacing the AEM. |
Measurements: | sgp15ebbrE19.b1: - temp_air_left
- temp_air_right
sgp5ebbrE19.b1: - temp_trh_bottom
- vapor_pressure_bottom
- temp_trh_top
- temp_air_top
- vapor_pressure_top
- rh_top_fraction
- temp_air_bottom
- rh_bottom_fraction
sgp30ebbrE19.b1: - surface_soil_heat_flux_1
- temp_air_bottom
- Heat flux, latent, at 1.5-m height, 30-min intervals(latent_heat_flux)
- temp_trh_top
- temp_air_top
- rh_top_fraction
- vapor_pressure_top
- temp_trh_bottom
- rh_bottom_fraction
- bowen_ratio
- vapor_pressure_bottom
- Heat flux, sensible, at 1.5-m height, 30-min intervals(sensible_heat_flux)
|
Subject: | SGP/EBBR/E19 - Sensible and latent heat flux and net radiation incorrect |
DataStreams: | sgp15ebbrE19.b1, sgp30ebbrE19.b1, sgp5ebbrE19.b1
|
Description: | Net radiation was too large, resulting in sensible and latent heat fluxes being too large.
The cause of the problem is unknown. |
Measurements: | sgp15ebbrE19.b1:
sgp5ebbrE19.b1: - Radiation, net(net_radiation)
sgp30ebbrE19.b1: - Heat flux, latent, at 1.5-m height, 30-min intervals(latent_heat_flux)
- Radiation, net(net_radiation)
- Heat flux, sensible, at 1.5-m height, 30-min intervals(sensible_heat_flux)
|