DQR ID | Subject | Data Streams Affected |
---|---|---|
D000221.8 | SGP/EBBR - EBBR E12 Anemometer Cups Frozen, Wind Speed Incorrect | sgp15ebbrE12.b1, sgp30ebbrE12.b1, sgp5ebbrE12.b1 |
D000225.10 | SGP/EBBR - EBBR E12 Net Radiation Incorrect | sgp30ebbrE12.b1, sgp5ebbrE12.b1, sgp15ebbrE12.b1 |
D000301.1 | SGP/EBBR - EBBR E12 Net Radiation Incorrect | sgp15ebbrE12.b1, sgp30ebbrE12.b1, sgp5ebbrE12.b1 |
D010213.1 | SGP/EBBR/E12 - EBBR E12 Wind Speed Iced | sgp5ebbrE12.b1, sgp30ebbrE12.b1, sgp15ebbrE12.b1 |
D010213.2 | SGP/EBBR/E12 - EBBR E12 Wind Speed Iced | sgp30ebbrE12.b1, sgp15ebbrE12.b1, sgp5ebbrE12.b1 |
D010402.13 | SGP/EBBR/E12 - E12 EBBR Wind Direction Incorrect | sgp30ebbrE12.b1, sgp5ebbrE12.b1, sgp15ebbrE12.b1 |
D010402.14 | SGP/EBBR/E12 - E12 EBBR Wind Speed Incorrect | sgp30ebbrE12.b1, sgp15ebbrE12.b1, sgp5ebbrE12.b1 |
D010402.16 | SGP/EBBR/E12 - E12 EBBR AEM Stuck - Data Incorrect | sgp30ebbrE12.b1, sgp15ebbrE12.b1, sgp5ebbrE12.b1 |
D011127.26 | SGP EBBR E12 - E12 EBBR Data Incorrect During 6 Month Checks | sgp30ebbrE12.b1, sgp15ebbrE12.b1, sgp5ebbrE12.b1 |
D011207.11 | SGP EBBR E12 - E12 EBBR Data Incorrect From AEM In One Position | sgp5ebbrE12.b1, sgp30ebbrE12.b1, sgp15ebbrE12.b1 |
D020716.11 | SGP/EBBR/E12 - 6 Month Checks | sgp15ebbrE12.b1, sgp30ebbrE12.b1, sgp5ebbrE12.b1 |
D020717.10 | SGP/EBBR/E12 - AEM Hung | sgp15ebbrE12.b1, sgp30ebbrE12.b1, sgp5ebbrE12.b1 |
D020717.11 | SGP/EBBR/E12 - Measurements Incorrect | sgp15ebbrE12.b1, sgp30ebbrE12.b1, sgp5ebbrE12.00, sgp5ebbrE12.b1 |
D020717.12 | SGP/EBBR/E12 - Resistance Measurements Incorrect | sgp30ebbrE12.b1, sgp5ebbrE12.b1, sgp15ebbrE12.b1 |
D020717.6 | SGP/EBBR/E12 - Reprocess: Soil Temperature #3 Incorrect | sgp30ebbrE12.b1 |
D020717.7 | SGP/EBBR/E12 - Wind Direction Incorrect | sgp30ebbrE12.b1, sgp5ebbrE12.b1 |
D020717.8 | SGP/EBBR/E12 - Reprocess: Soil Moisture 4 and 5 Incorrect | sgp30ebbrE12.b1 |
D020717.9 | SGP/EBBR/E12 - Reprocess: Soil Moisture 2 and 5 Incorrect | sgp30ebbrE12.b1 |
D021113.1 | SGP/EBBR - Incorrect Units for Soil Heat Capacity (cs1, cs2, cs3, cs4, cs5) in 30EBBR Header | sgp30ebbrE12.b1, sgp30ebbrE13.b1, sgp30ebbrE15.b1, sgp30ebbrE18.b1, sgp30ebbrE19.b1, sgp30ebbrE2.b1, sgp30ebbrE20.b1, sgp30ebbrE22.b1, sgp30ebbrE26.b1, sgp30ebbrE4.b1, sgp30ebbrE7.b1, sgp30ebbrE8.b1, sgp30ebbrE9.b1 |
D021113.4 | SGP/EBBR - Incorrect Units for Soil Heat Capacity (cs1, cs2, cs3, cs4, cs5) in 30EBBR Header | sgp30ebbrE12.b1, sgp30ebbrE13.b1, sgp30ebbrE15.b1, sgp30ebbrE20.b1, sgp30ebbrE22.b1, sgp30ebbrE26.b1, sgp30ebbrE4.b1, sgp30ebbrE7.b1, sgp30ebbrE8.b1, sgp30ebbrE9.b1 |
D030110.33 | SGP/EBBR/E12 - Data Incorrect during 6 month checks | sgp15ebbrE12.b1, sgp30ebbrE12.b1, sgp5ebbrE12.b1 |
D030114.11 | SGP/EBBR/E12 - Resistance-based Measurements Incorrect | sgp15ebbrE12.b1, sgp30ebbrE12.b1, sgp5ebbrE12.b1 |
D030114.12 | SGP/EBBR/E12 - Wind Direction Incorrect | sgp15ebbrE12.b1, sgp30ebbrE12.b1, sgp5ebbrE12.b1 |
D030114.13 | SGP/EBBR/E12 - Data zero following Logger Restart | sgp15ebbrE12.b1, sgp30ebbrE12.b1, sgp5ebbrE12.b1 |
D030114.14 | SGP/EBBR/E12 - Battery Voltage Low | sgp15ebbrE12.b1, sgp30ebbrE12.b1, sgp5ebbrE12.b1 |
D030114.19 | SGP/EBBR/E12 - AEM Stuck in One Position | sgp30ebbrE12.b1 |
D030115.2 | SGP/EBBR/E12 - REPROCESS: Net Rad Calibration Coefficients | sgp30ebbrE12.b1, sgp5ebbrE12.b1 |
D030115.3 | SGP/EBBR/E12 - Data Mostly Zero Following Logger Restart | sgp15ebbrE12.b1, sgp30ebbrE12.b1, sgp5ebbrE12.b1 |
D030711.21 | SGP/EBBR/E12 - AEM Hung Inbetween Home Positions | sgp15ebbrE12.b1, sgp30ebbrE12.b1, sgp5ebbrE12.b1 |
D030712.16 | SGP/EBBR/E12 - 6 Month Checks | sgp15ebbrE12.b1, sgp30ebbrE12.b1, sgp5ebbrE12.b1 |
D031031.4 | SGP/EBBR/E12 - Water in Net Radiometer, Surface Fluxes Incorrect | sgp15ebbrE12.b1, sgp30ebbrE12.b1, sgp5ebbrE12.b1 |
D031124.12 | SGP/EBBR/E12 - Pressure Sensor Measurement Scales With Battery Voltage | sgp15ebbrE12.b1, sgp30ebbrE12.b1, sgp5ebbrE12.b1 |
D031204.9 | SGP/EBBR/E12 - 6 Month Checks | sgp15ebbrE12.b1, sgp30ebbrE12.b1, sgp5ebbrE12.b1 |
D031217.4 | SGP/EBBR/E12 - Pressure Sensor Measurement Scales With Battery Voltage | sgp30ebbrE12.b1, sgp5ebbrE12.b1, sgp15ebbrE12.b1 |
D031222.15 | SGP/EBBR/E12 - Wind Speed Sensor Frozen By Ice Storm | sgp15ebbrE12.b1, sgp30ebbrE12.b1, sgp5ebbrE12.b1 |
D040304.10 | SGP/EBBR/E12 - Wind Speed Frozen Stopped By Ice | sgp15ebbrE12.b1, sgp30ebbrE12.b1, sgp5ebbrE12.b1 |
D040304.11 | SGP/EBBR/E12 - Wind Direction Frozen Stopped By Ice | sgp30ebbrE12.b1, sgp5ebbrE12.b1 |
D040615.3 | SGP/EBBR/E12 - Incorrect Times | sgp15ebbrE12.b1, sgp30baebbrE12.c1, sgp30ebbrE12.b1, sgp5ebbrE12.b1, sgpebbrE12.00 |
D041222.11 | SGP/EBBR/E12 - 6 Month Checks | sgp15ebbrE12.b1, sgp30ebbrE12.b1, sgp5ebbrE12.b1 |
D041222.2 | SGP/EBBR/E12 - AEM home_15 Incorrect, Flux Measurements not affected | sgp15ebbrE12.b1, sgp30ebbrE12.b1, sgp5ebbrE12.b1 |
D050206.9 | SGP/EBBR/E12 - Wind Speed Frozen Stopped By Ice Storm | sgp15ebbrE12.b1, sgp30ebbrE12.b1, sgp5ebbrE12.b1 |
D050207.5 | SGP/EBBR/E12 - Wind Direction Frozen Stopped By Ice Storm | sgp15ebbrE12.b1, sgp30ebbrE12.b1, sgp5ebbrE12.b1 |
D050215.16 | SGP/EBBR/E12 - Wind Speed Frozen Stopped By Ice | sgp15ebbrE12.b1, sgp30ebbrE12.b1, sgp5ebbrE12.b1 |
D050215.17 | SGP/EBBR/E12 - Wind Direction Frozen Stopped By Ice | sgp30ebbrE12.b1, sgp5ebbrE12.b1, sgp15ebbrE12.b1 |
D050304.1 | SGP/EBBR/E12 - Wind Speed and Direction Frozen by Ice Storm | sgp15ebbrE12.b1, sgp30ebbrE12.b1, sgp5ebbrE12.b1 |
D050719.9 | SGP/EBBR/E12 - Improved EBBR CR10 Program | sgp30ebbrE12.b1 |
D051106.23 | SGP/EBBR/E12 - Average Soil Heat Flux Incorrect | sgp30ebbrE12.b1 |
D051111.10 | SGP/EBBR/E12 - metadata corrections | sgp15ebbrE12.b1, sgp30ebbrE12.b1, sgp5ebbrE12.b1 |
D060111.5 | SGP/EBBR/E12 - Sensible and Latent Heat Fluxes Incorrect at Times | sgp15ebbrE12.b1, sgp30ebbrE12.b1 |
D060111.8 | SGP/EBBR/E12 - Multiplexer failure | sgp15ebbrE12.b1, sgp30ebbrE12.b1, sgp5ebbrE12.b1 |
D060501.11 | SGP/EBBR/E12 - Fluxes and Gradient Measurements Incorrect | sgp15ebbrE12.b1, sgp30ebbrE12.b1, sgp5ebbrE12.b1 |
D060921.3 | SGP/EBBR/E12 - Net Radiation, and Sensible and Latent Heat Fluxes Incorrect | sgp15ebbrE12.b1, sgp30ebbrE12.b1, sgp5ebbrE12.b1 |
D060921.4 | SGP/EBBR/E12 - Soil Temperature #1 Incorrect | sgp15ebbrE12.b1, sgp30ebbrE12.b1 |
D061220.6 | SGP/EBBR/E12 - Wind Direction Dependency of Surface Fluxes and General Data Quality Information | sgp30ebbrE12.b1 |
D090313.12 | SGP/EBBR/E12 - Wind Speed Incorrect | sgp15ebbrE12.b1, sgp30ebbrE12.b1, sgp5ebbrE12.b1 |
D100223.1 | SGP/EBBR/E12 - Wind Speed Sensor Frozen Stopped by Icing | sgp15ebbrE12.b1, sgp30ebbrE12.b1, sgp5ebbrE12.b1 |
D100720.2 | SGP/EBBR/E12 - Intermittent data loss | sgp15ebbrE12.b1, sgp30ebbrE12.b1, sgp5ebbrE12.b1 |
D100720.3 | SGP/EBBR/E12 - Sensible and Latent Heat Fluxes and Other Measurements Incorrect | sgp15ebbrE12.b1, sgp30ebbrE12.b1, sgp5ebbrE12.b1 |
D101004.1 | SGP/EBBR/E12 - Net radiation too high | sgp15ebbrE12.b1, sgp30ebbrE12.b1, sgp5ebbrE12.b1 |
D110830.1 | SGP/EBBR/E12 - Loose connection (SHF #4) | sgp15ebbrE12.b1, sgp30ebbrE12.b1 |
D990128.1 | SGP/EBBR/E12 - Wind Speed Data Incorrect | sgp15ebbrE12.b1, sgp30ebbrE12.b1, sgp5ebbrE12.b1 |
D990128.2 | SGP/EBBR - EBBR E12 Wind Speed Data Incorrect | sgp15ebbrE12.b1, sgp30ebbrE12.b1, sgp5ebbrE12.b1, sgp5ebbrE12.00 |
D990129.1 | SGP/EBBR - EBBR E12 Wind Speed Data Incorrect | sgp15ebbrE12.b1, sgp30ebbrE12.b1, sgp5ebbrE12.b1, sgp5ebbrE12.00 |
D990622.4 | SGP/EBBR/E12 - RH top Data Zero | sgp30ebbrE12.b1 |
Start Date | Start Time | End Date | End Time |
---|---|---|---|
12/21/1999 | 0000 | 12/21/1999 | 1320 |
Subject: | SGP/EBBR - EBBR E12 Anemometer Cups Frozen, Wind Speed Incorrect |
DataStreams: | sgp15ebbrE12.b1, sgp30ebbrE12.b1, sgp5ebbrE12.b1 |
Description: | The anemometer cups were frozen stalled during this period. The following values were therefore incorrect: 5 minute: wind_s, res_ws 15 minute: wind_s 30 minute: wind_s, res_ws |
Measurements: | sgp15ebbrE12.b1:
sgp30ebbrE12.b1:
sgp5ebbrE12.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
12/17/1999 | 1700 | 12/27/1999 | 1845 |
Subject: | SGP/EBBR - EBBR E12 Net Radiation Incorrect |
DataStreams: | sgp30ebbrE12.b1, sgp5ebbrE12.b1, sgp15ebbrE12.b1 |
Description: | Condensation inside the domes (possibly water in the bottom dome also) during the period made daytime net radiation values as much as 50% too large and nighttime net radiations as much as 100% too small. The affected data are: 5 minute: q 15 minute: mv_q 30 minute: q, h, e |
Measurements: | sgp30ebbrE12.b1:
sgp15ebbrE12.b1:
sgp5ebbrE12.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
12/09/1999 | 0700 | 12/14/1999 | 1500 |
Subject: | SGP/EBBR - EBBR E12 Net Radiation Incorrect |
DataStreams: | sgp15ebbrE12.b1, sgp30ebbrE12.b1, sgp5ebbrE12.b1 |
Description: | The net radiometer top dome was broken and water had entered. Net radiation values are therefore incorrect during the period. The affected data are: 5 minute: q 15 minute: mv_q 30 minute: q, h, e |
Measurements: | sgp30ebbrE12.b1:
sgp15ebbrE12.b1:
sgp5ebbrE12.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
12/11/2000 | 0130 | 12/15/2000 | 1630 |
Subject: | SGP/EBBR/E12 - EBBR E12 Wind Speed Iced |
DataStreams: | sgp5ebbrE12.b1, sgp30ebbrE12.b1, sgp15ebbrE12.b1 |
Description: | The anemometer was frozen stopped by freezing rain; the indicated data is incorrect. |
Measurements: | sgp15ebbrE12.b1:
sgp30ebbrE12.b1:
sgp5ebbrE12.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
12/18/2000 | 0730 | 12/18/2000 | 1115 |
Subject: | SGP/EBBR/E12 - EBBR E12 Wind Speed Iced |
DataStreams: | sgp30ebbrE12.b1, sgp15ebbrE12.b1, sgp5ebbrE12.b1 |
Description: | The anemometer was frozen stopped by freezing rain; the indicated data is incorrect. |
Measurements: | sgp15ebbrE12.b1:
sgp30ebbrE12.b1:
sgp5ebbrE12.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
12/18/2000 | 0645 | 12/18/2000 | 1101 |
Subject: | SGP/EBBR/E12 - E12 EBBR Wind Direction Incorrect |
DataStreams: | sgp30ebbrE12.b1, sgp5ebbrE12.b1, sgp15ebbrE12.b1 |
Description: | The wind direction vane was frozen stopped in one direction by icing. |
Measurements: | sgp30ebbrE12.b1:
sgp15ebbrE12.b1:
sgp5ebbrE12.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
12/18/2000 | 0645 | 12/18/2000 | 1101 |
Subject: | SGP/EBBR/E12 - E12 EBBR Wind Speed Incorrect |
DataStreams: | sgp30ebbrE12.b1, sgp15ebbrE12.b1, sgp5ebbrE12.b1 |
Description: | The wind speed sensor cups were frozen stopped by icing. |
Measurements: | sgp15ebbrE12.b1:
sgp30ebbrE12.b1:
sgp5ebbrE12.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
02/01/2000 | 0000 | 02/08/2000 | 1531 |
Subject: | SGP/EBBR/E12 - E12 EBBR AEM Stuck - Data Incorrect |
DataStreams: | sgp30ebbrE12.b1, sgp15ebbrE12.b1, sgp5ebbrE12.b1 |
Description: | The AEM became stuck between levels, causing all gradient measurements to be incorrect, and thus the latent and sensible heat fluxes and Bowen ratio. |
Measurements: | sgp15ebbrE12.b1:
sgp30ebbrE12.b1:
sgp5ebbrE12.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/03/2001 | 1625 | 04/03/2001 | 1716 |
10/18/2001 | 1930 | 10/18/2001 | 2116 |
Subject: | SGP EBBR E12 - E12 EBBR Data Incorrect During 6 Month Checks |
DataStreams: | sgp30ebbrE12.b1, sgp15ebbrE12.b1, sgp5ebbrE12.b1 |
Description: | The data was incorrect during the 6 month checks. |
Measurements: | sgp30ebbrE12.b1:
sgp15ebbrE12.b1:
sgp5ebbrE12.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/16/2001 | 1900 | 04/17/2001 | 1631 |
04/17/2001 | 2330 | 04/18/2001 | 1631 |
04/18/2001 | 2100 | 04/20/2001 | 1301 |
04/20/2001 | 2130 | 04/21/2001 | 0931 |
04/21/2001 | 2030 | 04/26/2001 | 1501 |
04/27/2001 | 0030 | 05/01/2001 | 1431 |
04/06/2001 | 2030 | 04/11/2001 | 1731 |
Subject: | SGP EBBR E12 - E12 EBBR Data Incorrect From AEM In One Position |
DataStreams: | sgp5ebbrE12.b1, sgp30ebbrE12.b1, sgp15ebbrE12.b1 |
Description: | The AEM kept stopping in one position. Offset biases are not removed from the gradient data in this situation and the data indicated is therefore incorrect. |
Measurements: | sgp15ebbrE12.b1:
sgp30ebbrE12.b1:
sgp5ebbrE12.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/30/2002 | 1540 | 04/30/2002 | 1611 |
Subject: | SGP/EBBR/E12 - 6 Month Checks |
DataStreams: | sgp15ebbrE12.b1, sgp30ebbrE12.b1, sgp5ebbrE12.b1 |
Description: | The indicated measurements were incorrect during the 6 month checks. |
Measurements: | sgp15ebbrE12.b1:
sgp30ebbrE12.b1:
sgp5ebbrE12.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/30/2002 | 0430 | 02/06/2002 | 1646 |
Subject: | SGP/EBBR/E12 - AEM Hung |
DataStreams: | sgp15ebbrE12.b1, sgp30ebbrE12.b1, sgp5ebbrE12.b1 |
Description: | The automatic exchange mechanism did not exchange properly, causing other measurements to be incorrect. |
Measurements: | sgp15ebbrE12.b1:
sgp30ebbrE12.b1:
sgp5ebbrE12.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
06/12/2002 | 1430 | 06/12/2002 | 1501 |
Subject: | SGP/EBBR/E12 - Measurements Incorrect |
DataStreams: | sgp15ebbrE12.b1, sgp30ebbrE12.b1, sgp5ebbrE12.00, sgp5ebbrE12.b1 |
Description: | All measurements were incorrect or offscale for an unknown reason. |
Measurements: | sgp30ebbrE12.b1:
sgp15ebbrE12.b1:
sgp5ebbrE12.00:
sgp5ebbrE12.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
06/28/2002 | 1800 | 07/07/2002 | 2356 |
Subject: | SGP/EBBR/E12 - Resistance Measurements Incorrect |
DataStreams: | sgp30ebbrE12.b1, sgp5ebbrE12.b1, sgp15ebbrE12.b1 |
Description: | All sensors that depend on resistance measurements are incorrect. Average soil heat flow, sensible heat flux, and latent heat flux are incorrect as a result. This condition normally occurs when the reference temperature sensor is disconnected or bad. |
Measurements: | sgp15ebbrE12.b1:
sgp30ebbrE12.b1:
sgp5ebbrE12.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
11/01/2001 | 0000 | 06/20/2002 | 1231 |
Subject: | SGP/EBBR/E12 - Reprocess: Soil Temperature #3 Incorrect |
DataStreams: | sgp30ebbrE12.b1 |
Description: | Soil Temperature #3 was flaky primarily during nighttime hours and sometimes during early daylight hours. Average soil heat flow, sensible heat flux, and latent heat flux are also affected; these can be recalculated using the remaining good sets of soil sensors as follows: The heat fluxes can be recalculated by using soil sets 1, 2, 4, and 5 as follows: ave_shf = (g1 + g2 + g4 + g5)/4 e = -(q + ave_shf)/(1 + bowen) h = -(q + e + ave_shf) |
Measurements: | sgp30ebbrE12.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/25/2002 | 2230 | 06/30/2002 | 2356 |
Subject: | SGP/EBBR/E12 - Wind Direction Incorrect |
DataStreams: | sgp30ebbrE12.b1, sgp5ebbrE12.b1 |
Description: | The wind direction measurement was zero, in the 50s, or always less than 180 degrees. A DQPR has been issued to resolve the problem. |
Measurements: | sgp30ebbrE12.b1:
sgp5ebbrE12.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/30/2002 | 1200 | 01/30/2002 | 1201 |
Subject: | SGP/EBBR/E12 - Reprocess: Soil Moisture 4 and 5 Incorrect |
DataStreams: | sgp30ebbrE12.b1 |
Description: | Soil moisture measurements from sets 4 and 5 were incorrect, leading to many other incorrect measurements calculated using them. Average soil heat flow, sensible heat flux, and latent heat flux are affected; these can be recalculated using the remaining good sets of soil sensors as follows: ave_shf = (g1 + g2 + g3)/3 e = -(q + ave_shf)/(1 + bowen) h = -(q + e + ave_shf) Note: D020717.6 reports Soil temperature sensor #3 was also bad during this time, but for the very specific records affected by the soil moisture #4 and #5 reporting incorrectly, soil temp #3 was okay. Therefore the equations given are correct. |
Measurements: | sgp30ebbrE12.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/30/2002 | 1430 | 01/30/2002 | 1431 |
Subject: | SGP/EBBR/E12 - Reprocess: Soil Moisture 2 and 5 Incorrect |
DataStreams: | sgp30ebbrE12.b1 |
Description: | Soil moisture measurements from sets 2 and 5 were incorrect, leading to many other incorrect measurements calculated using them. Average soil heat flow, sensible heat flux, and latent heat flux are affected; these can be recalculated using the remaining good sets of soil sensors as follows: ave_shf = (g1 + g3 + g4)/3 e = -(q + ave_shf)/(1 + bowen) h = -(q + e + ave_shf) Note: D020717.6 reports Soil temperature sensor #3 was also bad during this time, but for the very specific records affected by the soil moisture #2 and #5 reporting incorrectly, soil temp #3 was okay. Therefore the equations given are correct. |
Measurements: | sgp30ebbrE12.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/01/2001 | 0000 | 06/18/2003 | 2359 |
Subject: | SGP/EBBR - Incorrect Units for Soil Heat Capacity (cs1, cs2, cs3, cs4, cs5) in 30EBBR |
DataStreams: | sgp30ebbrE12.b1, sgp30ebbrE13.b1, sgp30ebbrE15.b1, sgp30ebbrE18.b1, sgp30ebbrE19.b1, sgp30ebbrE2.b1, sgp30ebbrE20.b1, sgp30ebbrE22.b1, sgp30ebbrE26.b1, sgp30ebbrE4.b1, sgp30ebbrE7.b1, sgp30ebbrE8.b1, sgp30ebbrE9.b1 |
Description: | 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. |
Measurements: | sgp30ebbrE2.b1:
sgp30ebbrE26.b1:
sgp30ebbrE9.b1:
sgp30ebbrE22.b1:
sgp30ebbrE13.b1:
sgp30ebbrE7.b1:
sgp30ebbrE18.b1:
sgp30ebbrE12.b1:
sgp30ebbrE4.b1:
sgp30ebbrE15.b1:
sgp30ebbrE19.b1:
sgp30ebbrE20.b1:
sgp30ebbrE8.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
12/01/1993 | 1200 | 06/18/2003 | 1159 |
Subject: | SGP/EBBR - Incorrect Units for Soil Heat Capacity (cs1, cs2, cs3, cs4, cs5) in 30EBBR |
DataStreams: | sgp30ebbrE12.b1, sgp30ebbrE13.b1, sgp30ebbrE15.b1, sgp30ebbrE20.b1, sgp30ebbrE22.b1, sgp30ebbrE26.b1, sgp30ebbrE4.b1, sgp30ebbrE7.b1, sgp30ebbrE8.b1, sgp30ebbrE9.b1 |
Description: | 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.) |
Measurements: | sgp30ebbrE26.b1:
sgp30ebbrE9.b1:
sgp30ebbrE7.b1:
sgp30ebbrE4.b1:
sgp30ebbrE12.b1:
sgp30ebbrE15.b1:
sgp30ebbrE22.b1:
sgp30ebbrE13.b1:
sgp30ebbrE8.b1:
sgp30ebbrE20.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
08/20/2002 | 1600 | 08/20/2002 | 1630 |
11/25/2002 | 1815 | 11/25/2002 | 1845 |
Subject: | SGP/EBBR/E12 - Data Incorrect during 6 month checks |
DataStreams: | sgp15ebbrE12.b1, sgp30ebbrE12.b1, sgp5ebbrE12.b1 |
Description: | Some of the measurements are incorrect during the 6 month checks. |
Measurements: | sgp15ebbrE12.b1:
sgp30ebbrE12.b1:
sgp5ebbrE12.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
07/08/2002 | 0000 | 07/09/2002 | 1330 |
Subject: | SGP/EBBR/E12 - Resistance-based Measurements Incorrect |
DataStreams: | sgp15ebbrE12.b1, sgp30ebbrE12.b1, sgp5ebbrE12.b1 |
Description: | When the Reference Temperature in the EBBR enclosure is not reported correctly, it affects all resistance-based measurements that are adjusted with the temperature of the reference junction. |
Measurements: | sgp15ebbrE12.b1:
sgp30ebbrE12.b1:
sgp5ebbrE12.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
07/01/2002 | 0000 | 07/12/2002 | 1800 |
Subject: | SGP/EBBR/E12 - Wind Direction Incorrect |
DataStreams: | sgp15ebbrE12.b1, sgp30ebbrE12.b1, sgp5ebbrE12.b1 |
Description: | The wind direction and residual wind speed measurements are incorrect. |
Measurements: | sgp30ebbrE12.b1:
sgp15ebbrE12.b1:
sgp5ebbrE12.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
07/23/2002 | 1700 | 07/23/2002 | 1729 |
08/16/2002 | 1600 | 08/16/2002 | 1629 |
09/03/2002 | 1700 | 09/03/2002 | 1729 |
Subject: | SGP/EBBR/E12 - Data zero following Logger Restart |
DataStreams: | sgp15ebbrE12.b1, sgp30ebbrE12.b1, sgp5ebbrE12.b1 |
Description: | Most of the measurements were zero, which normally happens after a datalogger restart. The restart on 08/16/02 occurred after an EBBR unit changeout. |
Measurements: | sgp30ebbrE12.b1:
sgp15ebbrE12.b1:
sgp5ebbrE12.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
09/09/2002 | 0000 | 10/29/2002 | 1830 |
Subject: | SGP/EBBR/E12 - Battery Voltage Low |
DataStreams: | sgp15ebbrE12.b1, sgp30ebbrE12.b1, sgp5ebbrE12.b1 |
Description: | Normally, when Battery Voltage drops below 10.5 volts, most measurements are suspect and some are often incorrect. In this particular case, some of the data is suspect when the battery voltage is below 11.0 volts. Soil Heat Flow #3 is normally affected first, with other measurements following at lower voltages. |
Measurements: | sgp15ebbrE12.b1:
sgp30ebbrE12.b1:
sgp5ebbrE12.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
10/31/2002 | 0700 | 11/12/2002 | 1730 |
11/25/2002 | 1830 | 11/25/2002 | 1900 |
Subject: | SGP/EBBR/E12 - AEM Stuck in One Position |
DataStreams: | sgp30ebbrE12.b1 |
Description: | When the AEM (Automatic Exchange Mechanism) is hung at a home position, the gradients of temperature and relative humidity, and thus sensible and latent heat fluxes, are incorrect. |
Measurements: | sgp30ebbrE12.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
08/16/2002 | 1720 | 12/10/2002 | 1720 |
Subject: | SGP/EBBR/E12 - REPROCESS: Net Rad Calibration Coefficients |
DataStreams: | sgp30ebbrE12.b1, sgp5ebbrE12.b1 |
Description: | The Net Radiometer coefficients were incorrect in the CR10 program when the replacement EBBR unit was installed on 08/16/02. The data can be easily corrected; see the Suggestion area below. |
Measurements: | sgp30ebbrE12.b1:
sgp5ebbrE12.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
12/10/2002 | 1700 | 12/10/2002 | 1729 |
Subject: | SGP/EBBR/E12 - Data Mostly Zero Following Logger Restart |
DataStreams: | sgp15ebbrE12.b1, sgp30ebbrE12.b1, sgp5ebbrE12.b1 |
Description: | Most of the measurements were zero, which normally happens after a datalogger restart. The restart on 12/10/02 occurred after a CR10 program change of net radiometer coefficients and subsequent restart of the CR10. |
Measurements: | sgp30ebbrE12.b1:
sgp15ebbrE12.b1:
sgp5ebbrE12.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/01/2003 | 0000 | 01/10/2003 | 1630 |
02/06/2003 | 1730 | 02/18/2003 | 1715 |
02/23/2003 | 1530 | 03/04/2003 | 1645 |
04/15/2003 | 1645 | 04/15/2003 | 1700 |
Subject: | SGP/EBBR/E12 - AEM Hung Inbetween Home Positions |
DataStreams: | sgp15ebbrE12.b1, sgp30ebbrE12.b1, sgp5ebbrE12.b1 |
Description: | The AEM was hung inbetween home positions, causing many measurements to be incorrect. |
Measurements: | sgp15ebbrE12.b1:
sgp30ebbrE12.b1:
sgp5ebbrE12.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/15/2003 | 1630 | 04/15/2003 | 1700 |
Subject: | SGP/EBBR/E12 - 6 Month Checks |
DataStreams: | sgp15ebbrE12.b1, sgp30ebbrE12.b1, sgp5ebbrE12.b1 |
Description: | Many measurements were incorrect while the AEM was positioned with both aspirators at the same height for comparison checks. |
Measurements: | sgp15ebbrE12.b1:
sgp30ebbrE12.b1:
sgp5ebbrE12.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
10/14/2003 | 0130 | 10/14/2003 | 1800 |
Subject: | SGP/EBBR/E12 - Water in Net Radiometer, Surface Fluxes Incorrect |
DataStreams: | sgp15ebbrE12.b1, sgp30ebbrE12.b1, sgp5ebbrE12.b1 |
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: | sgp30ebbrE12.b1:
sgp15ebbrE12.b1:
sgp5ebbrE12.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
10/13/2003 | 0000 | 11/26/2003 | 2300 |
Subject: | SGP/EBBR/E12 - Pressure Sensor Measurement Scales With Battery Voltage |
DataStreams: | sgp15ebbrE12.b1, sgp30ebbrE12.b1, sgp5ebbrE12.b1 |
Description: | The barometer output was scaling with supply voltage (i.e. it followed the charging of the battery by the solar panel). NOTE: The barometer was replaced later than the end date of this DQR. Why the problem ended on 26 Nov 2003 is unclear; there was no site ops intervention on that date. The problem did not affect the sensible and latent heat flux calculations beyond the expected system error. |
Measurements: | sgp15ebbrE12.b1:
sgp30ebbrE12.b1:
sgp5ebbrE12.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
10/28/2003 | 1750 | 10/28/2003 | 1845 |
Subject: | SGP/EBBR/E12 - 6 Month Checks |
DataStreams: | sgp15ebbrE12.b1, sgp30ebbrE12.b1, sgp5ebbrE12.b1 |
Description: | Many measurements were incorrect while the AEM was positioned with both aspirators at the same height for comparison checks. |
Measurements: | sgp15ebbrE12.b1:
sgp30ebbrE12.b1:
sgp5ebbrE12.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/03/2003 | 1500 | 10/12/2003 | 2355 |
Subject: | SGP/EBBR/E12 - Pressure Sensor Measurement Scales With Battery Voltage |
DataStreams: | sgp30ebbrE12.b1, sgp5ebbrE12.b1, sgp15ebbrE12.b1 |
Description: | The barometer output scaled with supply voltage (it followed the charging of the battery by the solar panel). The problem did not affect the sensible and latent heat flux calculations beyond the expected system error. |
Measurements: | sgp15ebbrE12.b1:
sgp30ebbrE12.b1:
sgp5ebbrE12.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
12/09/2003 | 2235 | 12/10/2003 | 1705 |
Subject: | SGP/EBBR/E12 - Wind Speed Sensor Frozen By Ice Storm |
DataStreams: | sgp15ebbrE12.b1, sgp30ebbrE12.b1, sgp5ebbrE12.b1 |
Description: | The wind speed sensor was frozen stopped by ice from a storm. The wind speed and residual wind speed measurements are incorrect. |
Measurements: | sgp15ebbrE12.b1:
sgp30ebbrE12.b1:
sgp5ebbrE12.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
02/02/2004 | 0945 | 02/02/2004 | 1820 |
02/09/2004 | 1215 | 02/09/2004 | 1430 |
Subject: | SGP/EBBR/E12 - Wind Speed Frozen Stopped By Ice |
DataStreams: | sgp15ebbrE12.b1, sgp30ebbrE12.b1, sgp5ebbrE12.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: | sgp15ebbrE12.b1:
sgp30ebbrE12.b1:
sgp5ebbrE12.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
02/02/2004 | 0810 | 02/02/2004 | 1930 |
02/09/2004 | 1235 | 02/09/2004 | 1405 |
Subject: | SGP/EBBR/E12 - Wind Direction Frozen Stopped By Ice |
DataStreams: | sgp30ebbrE12.b1, sgp5ebbrE12.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: | sgp30ebbrE12.b1:
sgp5ebbrE12.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
02/19/2004 | 2212 | 03/10/2004 | 2247 |
Subject: | SGP/EBBR/E12 - Incorrect Times |
DataStreams: | sgp15ebbrE12.b1, sgp30baebbrE12.c1, sgp30ebbrE12.b1, sgp5ebbrE12.b1, sgpebbrE12.00 |
Description: | The ntpd server (time adjustment) stopped working on Feb. 19th at 22:12:16 GMT, and the clock was corrected by -5600.177269 seconds on March 10th at 22:47 GMT. The recorded times for observations are off by amounts ranging from 0 seconds on Feb. 19th to 5600 seconds on March 10th. |
Measurements: | sgp30ebbrE12.b1:
sgp15ebbrE12.b1:
sgp30baebbrE12.c1:
sgpebbrE12.00:
sgp5ebbrE12.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
10/12/2004 | 1630 | 10/12/2004 | 1700 |
Subject: | SGP/EBBR/E12 - 6 Month Checks |
DataStreams: | sgp15ebbrE12.b1, sgp30ebbrE12.b1, sgp5ebbrE12.b1 |
Description: | Many measurements were incorrect while the AEM was positioned with both aspirators at the same height for comparison checks. |
Measurements: | sgp15ebbrE12.b1:
sgp30ebbrE12.b1:
sgp5ebbrE12.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
10/12/2004 | 1545 | 10/27/2004 | 0645 |
Subject: | SGP/EBBR/E12 - AEM home_15 Incorrect, Flux Measurements not affected |
DataStreams: | sgp15ebbrE12.b1, sgp30ebbrE12.b1, sgp5ebbrE12.b1 |
Description: | The home_15 measurement was incorrect during much of the stated period. The AEM was exchanging however, and thus the flux measurements were not affected. |
Measurements: | sgp15ebbrE12.b1:
sgp30ebbrE12.b1:
sgp5ebbrE12.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/05/2005 | 0735 | 01/08/2005 | 1700 |
Subject: | SGP/EBBR/E12 - Wind Speed Frozen Stopped By Ice Storm |
DataStreams: | sgp15ebbrE12.b1, sgp30ebbrE12.b1, sgp5ebbrE12.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: | sgp15ebbrE12.b1:
sgp30ebbrE12.b1:
sgp5ebbrE12.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/05/2005 | 0935 | 01/08/2005 | 1630 |
Subject: | SGP/EBBR/E12 - Wind Direction Frozen Stopped By Ice Storm |
DataStreams: | sgp15ebbrE12.b1, sgp30ebbrE12.b1, sgp5ebbrE12.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: | sgp30ebbrE12.b1:
sgp15ebbrE12.b1:
sgp5ebbrE12.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/11/2005 | 1040 | 01/11/2005 | 0755 |
Subject: | SGP/EBBR/E12 - Wind Speed Frozen Stopped By Ice |
DataStreams: | sgp15ebbrE12.b1, sgp30ebbrE12.b1, sgp5ebbrE12.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: | sgp15ebbrE12.b1:
sgp30ebbrE12.b1:
sgp5ebbrE12.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/11/2005 | 1040 | 01/12/2005 | 0410 |
Subject: | SGP/EBBR/E12 - Wind Direction Frozen Stopped By Ice |
DataStreams: | sgp30ebbrE12.b1, sgp5ebbrE12.b1, sgp15ebbrE12.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: | sgp30ebbrE12.b1:
sgp15ebbrE12.b1:
sgp5ebbrE12.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
02/25/2005 | 0430 | 02/25/2005 | 1130 |
Subject: | SGP/EBBR/E12 - Wind Speed and Direction Frozen by Ice Storm |
DataStreams: | sgp15ebbrE12.b1, sgp30ebbrE12.b1, sgp5ebbrE12.b1 |
Description: | The wind speed and direction sensors were frozen by ice from and ice storm. |
Measurements: | sgp30ebbrE12.b1:
sgp15ebbrE12.b1:
sgp5ebbrE12.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/01/2001 | 0000 | 03/29/2005 | 1830 |
Subject: | SGP/EBBR/E12 - Improved EBBR CR10 Program |
DataStreams: | sgp30ebbrE12.b1 |
Description: | Effective 20050329.1830, the EBBR.E12 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 20050329, 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 sgp30ebbrE12.b1 data stream. The earlier version of the CR10 program was also used on previous EBBR datastream names (e.g. sgp30ebbrE12.a1). |
Measurements: | sgp30ebbrE12.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
03/01/2005 | 1800 | 03/29/2005 | 1830 |
Subject: | SGP/EBBR/E12 - Average Soil Heat Flux Incorrect |
DataStreams: | sgp30ebbrE12.b1 |
Description: | 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. |
Measurements: | sgp30ebbrE12.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
10/13/2003 | 0000 | 07/22/2005 | 2359 |
Subject: | SGP/EBBR/E12 - metadata corrections |
DataStreams: | sgp15ebbrE12.b1, sgp30ebbrE12.b1, sgp5ebbrE12.b1 |
Description: | On 20050723, a series of metadata corrections and additions were completed. These metadata changes apply to all EBBR.E12 data collected by ARM back to the installation of the instrument in August 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") |
Measurements: | sgp15ebbrE12.b1:
sgp30ebbrE12.b1:
sgp5ebbrE12.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
12/27/2005 | 1730 | 01/02/2006 | 2330 |
Subject: | SGP/EBBR/E12 - Sensible and Latent Heat Fluxes Incorrect at Times |
DataStreams: | sgp15ebbrE12.b1, sgp30ebbrE12.b1 |
Description: | Large spikes in soil temperature #2 are causing the soil heat storage term to blow up, and thus the average soil heat flow, sensible heat flux, and latent heat flux to be incorrect at times. |
Measurements: | sgp15ebbrE12.b1:
sgp30ebbrE12.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
12/08/2005 | 1100 | 12/08/2005 | 1300 |
Subject: | SGP/EBBR/E12 - Multiplexer failure |
DataStreams: | sgp15ebbrE12.b1, sgp30ebbrE12.b1, sgp5ebbrE12.b1 |
Description: | Sensible and latent heat fluxes are incorrect during a period when multiplexer #2 experienced a failure. |
Measurements: | sgp15ebbrE12.b1:
sgp30ebbrE12.b1:
sgp5ebbrE12.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/15/2006 | 2300 | 04/25/2006 | 1700 |
Subject: | SGP/EBBR/E12 - Fluxes and Gradient Measurements Incorrect |
DataStreams: | sgp15ebbrE12.b1, sgp30ebbrE12.b1, sgp5ebbrE12.b1 |
Description: | The AEM hung in one position; therefore the fluxes and gradient measurements were incorrect. |
Measurements: | sgp15ebbrE12.b1:
sgp30ebbrE12.b1:
sgp5ebbrE12.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
08/21/2006 | 1200 | 08/29/2006 | 1630 |
Subject: | SGP/EBBR/E12 - Net Radiation, and Sensible and Latent Heat Fluxes Incorrect |
DataStreams: | sgp15ebbrE12.b1, sgp30ebbrE12.b1, sgp5ebbrE12.b1 |
Description: | Rain entered into the net radiometer through a broken top dome. Most of the net radiation values during the period are much too large, thus sensible and latent fluxes are also too large. |
Measurements: | sgp30ebbrE12.b1:
sgp15ebbrE12.b1:
sgp5ebbrE12.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
09/01/2006 | 0130 | 09/12/2006 | 1630 |
Subject: | SGP/EBBR/E12 - Soil Temperature #1 Incorrect |
DataStreams: | sgp15ebbrE12.b1, sgp30ebbrE12.b1 |
Description: | During much of this period soil temperature #1 was offscale or erratic. Sensible and latent heat fluxes were not ususally affected. |
Measurements: | sgp15ebbrE12.b1:
sgp30ebbrE12.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
11/23/1993 | 1500 | 10/12/2003 | 2330 |
Subject: | SGP/EBBR/E12 - Wind Direction Dependency of Surface Fluxes and General Data Quality |
DataStreams: | sgp30ebbrE12.b1 |
Description: | 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): 0-360 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. |
Measurements: | sgp30ebbrE12.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/27/2009 | 0245 | 01/28/2009 | 2005 |
Subject: | SGP/EBBR/E12 - Wind Speed Incorrect |
DataStreams: | sgp15ebbrE12.b1, sgp30ebbrE12.b1, sgp5ebbrE12.b1 |
Description: | The wind speed sensor was stopped by freezing rain. |
Measurements: | sgp15ebbrE12.b1:
sgp30ebbrE12.b1:
sgp5ebbrE12.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
02/21/2010 | 2300 | 02/22/2010 | 1730 |
Subject: | SGP/EBBR/E12 - Wind Speed Sensor Frozen Stopped by Icing |
DataStreams: | sgp15ebbrE12.b1, sgp30ebbrE12.b1, sgp5ebbrE12.b1 |
Description: | Icing stopped the wind speed sensor cups and resulted in the measurement of wind speed being equivalent to the sensor offset. |
Measurements: | sgp30ebbrE12.b1:
sgp15ebbrE12.b1:
sgp5ebbrE12.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
05/03/2010 | 0000 | 06/08/2010 | 1800 |
Subject: | SGP/EBBR/E12 - Intermittent data loss |
DataStreams: | sgp15ebbrE12.b1, sgp30ebbrE12.b1, sgp5ebbrE12.b1 |
Description: | The datalogger at E12 EBBR reset it's time to Dec 3, 1999 on a periodic basis. This occurred on 5/3, 5/15, 5/17, 5/18, 5/27, 6/5 and 6/6 of 2010. Each time this occurred we lost 1-2 hours of data. The datalogger was apparently at fault. The problem has not re-occurred since the datalogger was replaced on 6/8/2010. |
Measurements: | sgp30ebbrE12.b1:
sgp15ebbrE12.b1:
sgp5ebbrE12.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
06/10/2010 | 1200 | 06/23/2010 | 1630 |
Subject: | SGP/EBBR/E12 - Sensible and Latent Heat Fluxes and Other Measurements Incorrect |
DataStreams: | sgp15ebbrE12.b1, sgp30ebbrE12.b1, sgp5ebbrE12.b1 |
Description: | The power supply leads for the combined temperature probe shorted somehow, resulting in several measurements from the probe and for the multiplexer that it was connected to, to be incorrect. |
Measurements: | sgp30ebbrE12.b1:
sgp15ebbrE12.b1:
sgp5ebbrE12.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
09/01/2010 | 1200 | 09/29/2010 | 1600 |
Subject: | SGP/EBBR/E12 - Net radiation too high |
DataStreams: | sgp15ebbrE12.b1, sgp30ebbrE12.b1, sgp5ebbrE12.b1 |
Description: | Net radiation was too high, resulting in overestimated sensible and latent heat fluxes. Net rad domes replaced. |
Measurements: | sgp30ebbrE12.b1:
sgp15ebbrE12.b1:
sgp5ebbrE12.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
06/29/2011 | 1530 | 08/03/2011 | 1500 |
Subject: | SGP/EBBR/E12 - Loose connection (SHF #4) |
DataStreams: | sgp15ebbrE12.b1, sgp30ebbrE12.b1 |
Description: | Soil Heat Flow #4 was sometimes offscale due to a bad connection. Sensible and latent heat fluxes also affected at times. |
Measurements: | sgp30ebbrE12.b1:
sgp15ebbrE12.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
12/20/1998 | 2335 | 12/22/1998 | 1630 |
01/07/1999 | 1805 | 01/09/1999 | 0330 |
01/01/1999 | 1700 | 01/03/1999 | 1130 |
Subject: | SGP/EBBR/E12 - Wind Speed Data Incorrect |
DataStreams: | sgp15ebbrE12.b1, sgp30ebbrE12.b1, sgp5ebbrE12.b1 |
Description: | The wind speed sensor was iced stopped by freezing rain, resulting in the following values being incorrect: 5 minute: wind_s, res_ws 15 minute: wind_s 30 minute: wind_s, res_ws, |
Measurements: | sgp15ebbrE12.b1:
sgp30ebbrE12.b1:
sgp5ebbrE12.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/07/1999 | 1805 | 01/09/1999 | 0330 |
Subject: | SGP/EBBR - EBBR E12 Wind Speed Data Incorrect |
DataStreams: | sgp15ebbrE12.b1, sgp30ebbrE12.b1, sgp5ebbrE12.b1, sgp5ebbrE12.00 |
Description: | The wind speed sensor was iced stopped by freezing rain, resulting in the following values being incorrect: 5 minute: wind_s, res_ws 15 minute: wind_s 30 minute: wind_s, res_ws, |
Measurements: | sgp30ebbrE12.b1:
sgp15ebbrE12.b1:
sgp5ebbrE12.00:
sgp5ebbrE12.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/01/1999 | 1700 | 01/03/1999 | 1130 |
Subject: | SGP/EBBR - EBBR E12 Wind Speed Data Incorrect |
DataStreams: | sgp15ebbrE12.b1, sgp30ebbrE12.b1, sgp5ebbrE12.b1, sgp5ebbrE12.00 |
Description: | The wind speed sensor was iced stopped by freezing rain, resulting in the following values being incorrect: 5 minute: wind_s, res_ws 15 minute: wind_s 30 minute: wind_s, res_ws, |
Measurements: | sgp30ebbrE12.b1:
sgp15ebbrE12.b1:
sgp5ebbrE12.00:
sgp5ebbrE12.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
06/04/1999 | 1630 | 06/04/1999 | 1700 |
Subject: | SGP/EBBR/E12 - RH top Data Zero |
DataStreams: | sgp30ebbrE12.b1 |
Description: | The one data value hum_top was incorrect in the 30 minute data. 5 and 15 minute data were not affected, and the 30 minute flux data was not affected. The data value may have been lost in remote data retrieval, resulting in a zero value instead. |
Measurements: | sgp30ebbrE12.b1:
|