DQR ID | Subject | Data Streams Affected |
---|---|---|
D020716.11 | SGP/EBBR/E12 - 6 Month Checks | sgp15ebbrE12.a1, sgp15ebbrE12.b1, sgp30ebbrE12.a1, sgp30ebbrE12.b1, sgp5ebbrE12.a1 |
D020717.10 | SGP/EBBR/E12 - AEM Hung | sgp15ebbrE12.a1, sgp15ebbrE12.b1, sgp30ebbrE12.a1, sgp30ebbrE12.b1, sgp5ebbrE12.a1 |
D020717.11 | SGP/EBBR/E12 - Measurements Incorrect | sgp15ebbrE12.a1, sgp15ebbrE12.b1, sgp30ebbrE12.a1, sgp30ebbrE12.b1, sgp5ebbrE12.00, sgp5ebbrE12.a1 |
D020717.12 | SGP/EBBR/E12 - Resistance Measurements Incorrect | sgp15ebbrE12.a1, sgp15ebbrE12.b1, sgp30ebbrE12.a1, sgp30ebbrE12.b1, sgp5ebbrE12.a1 |
D020717.6 | SGP/EBBR/E12 - Reprocess: Soil Temperature #3 Incorrect | sgp30ebbrE12.a1, sgp30ebbrE12.b1 |
D020717.7 | SGP/EBBR/E12 - Wind Direction Incorrect | sgp30ebbrE12.a1, sgp30ebbrE12.b1, sgp5ebbrE12.a1 |
D020717.8 | SGP/EBBR/E12 - Reprocess: Soil Moisture 4 and 5 Incorrect | sgp30ebbrE12.a1, sgp30ebbrE12.b1 |
D020717.9 | SGP/EBBR/E12 - Reprocess: Soil Moisture 2 and 5 Incorrect | sgp30ebbrE12.a1, 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 |
D030110.33 | SGP/EBBR/E12 - Data Incorrect during 6 month checks | sgp15ebbrE12.a1, sgp15ebbrE12.b1, sgp30ebbrE12.a1, sgp30ebbrE12.b1, sgp5ebbrE12.a1 |
D030114.11 | SGP/EBBR/E12 - Resistance-based Measurements Incorrect | sgp15ebbrE12.a1, sgp15ebbrE12.b1, sgp30ebbrE12.a1, sgp30ebbrE12.b1, sgp5ebbrE12.a1 |
D030114.12 | SGP/EBBR/E12 - Wind Direction Incorrect | sgp15ebbrE12.a1, sgp15ebbrE12.b1, sgp30ebbrE12.a1, sgp30ebbrE12.b1, sgp5ebbrE12.a1 |
D030114.13 | SGP/EBBR/E12 - Data zero following Logger Restart | sgp15ebbrE12.a1, sgp15ebbrE12.b1, sgp30ebbrE12.a1, sgp30ebbrE12.b1, sgp5ebbrE12.a1 |
D030114.14 | SGP/EBBR/E12 - Battery Voltage Low | sgp15ebbrE12.a1, sgp15ebbrE12.b1, sgp30ebbrE12.a1, sgp30ebbrE12.b1, sgp5ebbrE12.a1 |
D030114.19 | SGP/EBBR/E12 - AEM Stuck in One Position | sgp30ebbrE12.a1, sgp30ebbrE12.b1 |
D030115.2 | SGP/EBBR/E12 - REPROCESS: Net Rad Calibration Coefficients | sgp30ebbrE12.a1, sgp30ebbrE12.b1, sgp5ebbrE12.a1 |
D030115.3 | SGP/EBBR/E12 - Data Mostly Zero Following Logger Restart | sgp15ebbrE12.a1, sgp15ebbrE12.b1, sgp30ebbrE12.a1, sgp30ebbrE12.b1, sgp5ebbrE12.a1 |
D030711.21 | SGP/EBBR/E12 - AEM Hung Inbetween Home Positions | sgp15ebbrE12.a1, sgp15ebbrE12.b1, sgp30ebbrE12.a1, sgp30ebbrE12.b1, sgp5ebbrE12.a1 |
D030712.16 | SGP/EBBR/E12 - 6 Month Checks | sgp15ebbrE12.a1, sgp15ebbrE12.b1, sgp30ebbrE12.a1, sgp30ebbrE12.b1, sgp5ebbrE12.a1 |
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 | sgp15ebbrE12.b1, sgp30ebbrE12.b1, sgp5ebbrE12.a1 |
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 |
D050719.9 | SGP/EBBR/E12 - Improved EBBR CR10 Program | sgp30ebbrE12.b1 |
D051111.10 | SGP/EBBR/E12 - metadata corrections | 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.a1, sgp15ebbrE12.b1, sgp30ebbrE12.a1, sgp30ebbrE12.b1, sgp5ebbrE12.a1 |
Description: | The indicated measurements were incorrect during the 6 month checks. |
Measurements: | sgp15ebbrE12.b1:
sgp30ebbrE12.a1:
sgp5ebbrE12.a1:
sgp30ebbrE12.b1:
sgp15ebbrE12.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/30/2002 | 0430 | 02/06/2002 | 1646 |
Subject: | SGP/EBBR/E12 - AEM Hung |
DataStreams: | sgp15ebbrE12.a1, sgp15ebbrE12.b1, sgp30ebbrE12.a1, sgp30ebbrE12.b1, sgp5ebbrE12.a1 |
Description: | The automatic exchange mechanism did not exchange properly, causing other measurements to be incorrect. |
Measurements: | sgp15ebbrE12.b1:
sgp30ebbrE12.a1:
sgp5ebbrE12.a1:
sgp30ebbrE12.b1:
sgp15ebbrE12.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
06/12/2002 | 1430 | 06/12/2002 | 1501 |
Subject: | SGP/EBBR/E12 - Measurements Incorrect |
DataStreams: | sgp15ebbrE12.a1, sgp15ebbrE12.b1, sgp30ebbrE12.a1, sgp30ebbrE12.b1, sgp5ebbrE12.00, sgp5ebbrE12.a1 |
Description: | All measurements were incorrect or offscale for an unknown reason. |
Measurements: | sgp15ebbrE12.b1:
sgp5ebbrE12.00:
sgp30ebbrE12.a1:
sgp5ebbrE12.a1:
sgp30ebbrE12.b1:
sgp15ebbrE12.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
06/28/2002 | 1800 | 07/07/2002 | 2356 |
Subject: | SGP/EBBR/E12 - Resistance Measurements Incorrect |
DataStreams: | sgp15ebbrE12.a1, sgp15ebbrE12.b1, sgp30ebbrE12.a1, sgp30ebbrE12.b1, sgp5ebbrE12.a1 |
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.a1:
sgp5ebbrE12.a1:
sgp30ebbrE12.b1:
sgp15ebbrE12.a1:
|
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.a1, 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.a1:
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.a1, sgp30ebbrE12.b1, sgp5ebbrE12.a1 |
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.a1:
sgp5ebbrE12.a1:
sgp30ebbrE12.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.a1, 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.a1:
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.a1, 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.a1:
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: | sgp30ebbrE8.b1:
sgp30ebbrE4.b1:
sgp30ebbrE9.b1:
sgp30ebbrE18.b1:
sgp30ebbrE26.b1:
sgp30ebbrE13.b1:
sgp30ebbrE7.b1:
sgp30ebbrE12.b1:
sgp30ebbrE19.b1:
sgp30ebbrE20.b1:
sgp30ebbrE22.b1:
sgp30ebbrE2.b1:
sgp30ebbrE15.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.a1, sgp15ebbrE12.b1, sgp30ebbrE12.a1, sgp30ebbrE12.b1, sgp5ebbrE12.a1 |
Description: | Some of the measurements are incorrect during the 6 month checks. |
Measurements: | sgp15ebbrE12.b1:
sgp30ebbrE12.a1:
sgp5ebbrE12.a1:
sgp30ebbrE12.b1:
sgp15ebbrE12.a1:
|
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.a1, sgp15ebbrE12.b1, sgp30ebbrE12.a1, sgp30ebbrE12.b1, sgp5ebbrE12.a1 |
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.a1:
sgp5ebbrE12.a1:
sgp30ebbrE12.b1:
sgp15ebbrE12.a1:
|
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.a1, sgp15ebbrE12.b1, sgp30ebbrE12.a1, sgp30ebbrE12.b1, sgp5ebbrE12.a1 |
Description: | The wind direction and residual wind speed measurements are incorrect. |
Measurements: | sgp15ebbrE12.b1:
sgp30ebbrE12.a1:
sgp5ebbrE12.a1:
sgp30ebbrE12.b1:
sgp15ebbrE12.a1:
|
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.a1, sgp15ebbrE12.b1, sgp30ebbrE12.a1, sgp30ebbrE12.b1, sgp5ebbrE12.a1 |
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: | sgp15ebbrE12.b1:
sgp30ebbrE12.a1:
sgp5ebbrE12.a1:
sgp30ebbrE12.b1:
sgp15ebbrE12.a1:
|
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.a1, sgp15ebbrE12.b1, sgp30ebbrE12.a1, sgp30ebbrE12.b1, sgp5ebbrE12.a1 |
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.a1:
sgp5ebbrE12.a1:
sgp30ebbrE12.b1:
sgp15ebbrE12.a1:
|
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.a1, 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.a1:
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.a1, sgp30ebbrE12.b1, sgp5ebbrE12.a1 |
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.a1:
sgp5ebbrE12.a1:
sgp30ebbrE12.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.a1, sgp15ebbrE12.b1, sgp30ebbrE12.a1, sgp30ebbrE12.b1, sgp5ebbrE12.a1 |
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: | sgp15ebbrE12.b1:
sgp30ebbrE12.a1:
sgp5ebbrE12.a1:
sgp30ebbrE12.b1:
sgp15ebbrE12.a1:
|
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.a1, sgp15ebbrE12.b1, sgp30ebbrE12.a1, sgp30ebbrE12.b1, sgp5ebbrE12.a1 |
Description: | The AEM was hung inbetween home positions, causing many measurements to be incorrect. |
Measurements: | sgp15ebbrE12.b1:
sgp30ebbrE12.a1:
sgp5ebbrE12.a1:
sgp30ebbrE12.b1:
sgp15ebbrE12.a1:
|
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.a1, sgp15ebbrE12.b1, sgp30ebbrE12.a1, sgp30ebbrE12.b1, sgp5ebbrE12.a1 |
Description: | Many measurements were incorrect while the AEM was positioned with both aspirators at the same height for comparison checks. |
Measurements: | sgp15ebbrE12.b1:
sgp30ebbrE12.a1:
sgp5ebbrE12.a1:
sgp30ebbrE12.b1:
sgp15ebbrE12.a1:
|
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: | sgp15ebbrE12.b1:
sgp5ebbrE12.b1:
sgp30ebbrE12.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:
sgp5ebbrE12.b1:
sgp30ebbrE12.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:
sgp5ebbrE12.b1:
sgp30ebbrE12.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: | sgp15ebbrE12.b1, sgp30ebbrE12.b1, sgp5ebbrE12.a1 |
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:
sgp5ebbrE12.a1:
sgp30ebbrE12.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:
sgp5ebbrE12.b1:
sgp30ebbrE12.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:
sgp5ebbrE12.b1:
sgp30ebbrE12.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: | sgp5ebbrE12.b1:
sgp30ebbrE12.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: | sgp15ebbrE12.b1:
sgp5ebbrE12.b1:
sgpebbrE12.00:
sgp30baebbrE12.c1:
sgp30ebbrE12.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 |
---|---|---|---|
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:
sgp5ebbrE12.b1:
sgp30ebbrE12.b1:
|