DQR ID | Subject | Data Streams Affected |
---|---|---|
D000211.4 | SGP/EBBR - EBBR E4 Data Incorrect When Batt. Volt. Under 10.4 V | sgp15ebbrE4.b1, sgp30ebbrE4.b1, sgp5ebbrE4.b1 |
D000221.1 | SGP/EBBR - EBBR E4 Soil Heat Flux Values Too Large | sgp15ebbrE4.b1, sgp30ebbrE4.b1 |
D010102.10 | SGP/EBBR/E4 - E4 Negative SM5 Causes Incorrect Measurements | sgp30ebbrE4.b1 |
D010102.11 | SGP/EBBR/E4 - E4 SHF3 Large Negative | sgp30ebbrE4.b1 |
D010102.2 | SGP/EBBR/E4 - Missing Data | sgp15ebbrE4.b1, sgp30ebbrE4.b1, sgp5ebbrE4.b1 |
D010102.5 | SGP/EBBR/E4 - Data Missing | sgp15ebbrE4.b1, sgp30ebbrE4.b1, sgp5ebbrE4.b1 |
D010102.7 | SGP/EBBR/E4 - E4 Incorrect Data, AEM Stuck | sgp15ebbrE4.b1, sgp30ebbrE4.b1, sgp5ebbrE4.b1 |
D010102.8 | SGP/EBBR/E4 - E4 Data Incorrect | sgp15ebbrE4.b1, sgp30ebbrE4.b1, sgp5ebbrE4.b1 |
D010102.9 | SGP/EBBR/E4 - E4 SM5 Drifting | sgp30ebbrE4.b1 |
D010213.14 | SGP/EBBR/E4 - EBBR E4 Wind Speed Iced | sgp15ebbrE4.b1, sgp30ebbrE4.b1, sgp5ebbrE4.b1 |
D010605.1 | SGP EBBR E4 - E4 EBBR Soil Heat Flow #3 Incorrect | sgp15ebbrE4.b1, sgp30ebbrE4.b1 |
D010605.3 | SGP EBBR E4 - E4 EBBR Data Incorrect | sgp15ebbrE4.b1, sgp30ebbrE4.b1, sgp5ebbrE4.00, sgp5ebbrE4.b1 |
D010723.1 | SGP EBBR E4 - E4 EBBR Data Incorrect | sgp15ebbrE4.b1, sgp30ebbrE4.b1, sgp5ebbrE4.b1 |
D011127.22 | SGP EBBR E4 - E4 EBBR Data Incorrect During 6 Month Checks | sgp15ebbrE4.b1, sgp30ebbrE4.b1, sgp5ebbrE4.b1 |
D011129.1 | SGP EBBR E4 - E4 EBBR Data Incorrect | sgp15ebbrE4.b1, sgp30ebbrE4.b1, sgp5ebbrE4.00, sgp5ebbrE4.b1 |
D020628.10 | SGP/EBBR/E4 - T/RH Check | sgp15ebbrE4.b1, sgp30ebbrE4.b1, sgp5ebbrE4.b1 |
D020628.7 | SGP/EBBR/E4 - 3-month Check | sgp15ebbrE4.b1, sgp30ebbrE4.b1, sgp5ebbrE4.b1 |
D020701.1 | SGP/EBBR/E4 - Reprocess: Soil Temperature Malfunction | sgp15ebbrE4.b1, sgp30ebbrE4.b1 |
D020701.2 | SGP/EBBR/E4 - Reprocess: Bad soil heat flux sensor #4 | sgp15ebbrE4.b1, sgp30ebbrE4.b1 |
D020701.3 | SGP/EBBR/E4 - Reprocess: Bad soil heat flux sensor #5 | sgp15ebbrE4.b1, sgp30ebbrE4.b1 |
D020701.4 | SGP/EBBR/E4 - Soil Moisture Probe 5 Offscale | sgp15ebbrE4.b1, sgp30ebbrE4.b1 |
D020716.24 | SGP/EBBR/E4 - AEM Hung | sgp15ebbrE4.b1, sgp30ebbrE4.b1, sgp5ebbrE4.b1 |
D020716.25 | SGP/EBBR/E4 - Data Incorrect or Zero | sgp15ebbrE4.b1, sgp30ebbrE4.b1, sgp5ebbrE4.00, sgp5ebbrE4.b1 |
D020716.7 | SGP/EBBR/E4 - 6 Month Checks | sgp15ebbrE4.b1, sgp30ebbrE4.b1, sgp5ebbrE4.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 |
D030110.29 | SGP/EBBR/E4 - Data Incorrect during 6 month checks | sgp15ebbrE4.b1, sgp30ebbrE4.b1, sgp5ebbrE4.b1 |
D030117.31 | SGP/EBBR/E4 - Wind Speed Incorrect | sgp15ebbrE4.b1, sgp30ebbrE4.b1, sgp5ebbrE4.b1 |
D030117.32 | SGP/EBBR/E4 - Soil Moisture #4 zero | sgp30ebbrE4.b1 |
D030712.10 | SGP/EBBR/E4 - Soil Temperature #5 Incorrect | sgp15ebbrE4.b1, sgp30ebbrE4.b1 |
D030712.12 | SGP/EBBR/E4 - 6 Month Checks | sgp15ebbrE4.b1, sgp30ebbrE4.b1, sgp5ebbrE4.b1 |
D031204.5 | SGP/EBBR/E4 - 6 Month Checks | sgp15ebbrE4.b1, sgp30ebbrE4.b1, sgp5ebbrE4.b1 |
D031222.23 | SGP/EBBR/E4 - Wind Speed Sensor Frozen By Ice Storm | sgp15ebbrE4.b1, sgp30ebbrE4.b1, sgp5ebbrE4.b1 |
D040304.23 | SGP/EBBR/E4 - Wind Speed Frozen Stopped By Ice | sgp15ebbrE4.b1, sgp30ebbrE4.b1, sgp5ebbrE4.b1 |
D040304.24 | SGP/EBBR/E4 - Wind Direction Frozen Stopped By Ice | sgp30ebbrE4.b1, sgp5ebbrE4.b1 |
D040813.4 | SGP/EBBR/E4 - Net Radiation Incorrect, Sensible and Latent Heat Fluxes Incorrect | sgp30ebbrE4.b1, sgp5ebbrE4.b1 |
D041222.7 | SGP/EBBR/E4 - 6 Month Checks | sgp15ebbrE4.b1, sgp30ebbrE4.b1, sgp5ebbrE4.b1 |
D050206.5 | SGP/EBBR/E4 - Wind Speed Frozen Stopped By Ice Storm | sgp15ebbrE4.b1, sgp30ebbrE4.b1, sgp5ebbrE4.b1 |
D050207.2 | SGP/EBBR/E4 - Wind Direction Frozen Stopped By Ice Storm | sgp15ebbrE4.b1, sgp30ebbrE4.b1, sgp5ebbrE4.b1 |
D050215.10 | SGP/EBBR/E4 - Wind Direction Frozen Stopped By Ice | sgp15ebbrE4.b1, sgp30ebbrE4.b1, sgp5ebbrE4.b1 |
D050215.9 | SGP/EBBR/E4 - Wind Speed Frozen Stopped By Ice | sgp15ebbrE4.b1, sgp30ebbrE4.b1, sgp5ebbrE4.b1 |
D050303.4 | SGP/EBBR/E4 - Wind Speed and Direction Frozen by Ice Storm | sgp15ebbrE4.b1, sgp30ebbrE4.b1, sgp5ebbrE4.b1 |
D050404.2 | SGP/EBBR/E4 - Soil Temperature #5 Spiking Upwards | sgp30ebbrE4.b1 |
D050602.2 | SGP/EBBR/E4 - Water in Net Radiometer | sgp15ebbrE4.b1, sgp30ebbrE4.b1, sgp5ebbrE4.b1 |
D050624.1 | SGP/EBBR/E4 - All Measurements Incorrect Due to Low Battery Voltage | sgp15ebbrE4.b1, sgp30ebbrE4.b1, sgp5ebbrE4.b1 |
D050719.5 | SGP/EBBR/E4 - Improved EBBR CR10 Program | sgp30ebbrE4.b1 |
D051106.19 | SGP/EBBR/E4 - Average Soil Heat Flux Incorrect | sgp30ebbrE4.b1 |
D051112.3 | SGP/EBBR/E4 - metadata corrections | sgp15ebbrE4.b1, sgp30ebbrE4.b1, sgp5ebbrE4.b1 |
D051215.1 | SGP/EBBR/E4 - Net Radiation, Sensible and Latent Heat Fluxes Incorrect | sgp15ebbrE4.b1, sgp30ebbrE4.b1, sgp5ebbrE4.b1 |
D060111.2 | SGP/EBBR/E4 - Sensible and Latent Heat Fluxes Incorrect | sgp15ebbrE4.b1, sgp30ebbrE4.b1, sgp5ebbrE4.b1 |
D060501.3 | SGP/EBBR/E4 - Wind Speed Sensor Frozen Stopped | sgp15ebbrE4.b1, sgp30ebbrE4.b1, sgp5ebbrE4.b1 |
D060926.2 | SGP/EBBR/E4 - Soil Heat Flow #2 Incorrect at times | sgp15ebbrE4.b1, sgp30ebbrE4.b1 |
D070328.1 | SGP/EBBR/E4 - Wind Direction Stuck at Zero | sgp15ebbrE4.b1, sgp30ebbrE4.b1, sgp5ebbrE4.b1 |
D070508.1 | SGP/EBBR/E4 - Instrument problem | sgp15ebbrE4.b1, sgp30ebbrE4.b1, sgp5ebbrE4.b1 |
D070810.1 | SGP/EBBR/E4 - Wind Direction Incorrect | sgp15ebbrE4.b1, sgp30ebbrE4.b1, sgp5ebbrE4.b1 |
D080413.1 | SGP/EBBR/E4 - AEM Blown Fuse, Sensible and Latent Heat Fluxes Incorrect | sgp30ebbrE4.b1 |
D080509.2 | SGP/EBBR/E4 - Reprocess: Wind Direction Incorrect | sgp15ebbrE4.b1, sgp30ebbrE4.b1, sgp5ebbrE4.b1 |
D081110.1 | SGP/EBBR/E4 - Wind Direction 20 Degrees Low | sgp15ebbrE4.b1, sgp30ebbrE4.b1, sgp5ebbrE4.b1 |
D090313.10 | SGP/EBBR/E4 - Wind Speed Incorrect | sgp15ebbrE4.b1, sgp30ebbrE4.b1, sgp5ebbrE4.b1 |
Start Date | Start Time | End Date | End Time |
---|---|---|---|
11/08/1998 | 0445 | 09/01/1999 | 1500 |
Subject: | SGP/EBBR - EBBR E4 Data Incorrect When Batt. Volt. Under 10.4 V |
DataStreams: | sgp15ebbrE4.b1, sgp30ebbrE4.b1, sgp5ebbrE4.b1 |
Description: | All data was incorrect when the battery voltage dropped below 10.4 volts. An old battery was the cause of the problem; it had no deep cycle charge capacity. |
Measurements: | sgp5ebbrE4.b1:
sgp15ebbrE4.b1:
sgp30ebbrE4.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
07/17/1999 | 0100 | 07/17/1999 | 0115 |
Subject: | SGP/EBBR - EBBR E4 Soil Heat Flux Values Too Large |
DataStreams: | sgp15ebbrE4.b1, sgp30ebbrE4.b1 |
Description: | Soil Heat flux from probes #1 and #4 are incorrect for the period. The flux values output were larger than what could be considered reasonable, for unknown reasons. The following values were therefore incorrect as a result: 15 minute: mv_hft1, mv_hft4 30 minute: shf1, shf4, c_shf1, c_shf4, g1, g4, ave_shf, e, h |
Measurements: | sgp15ebbrE4.b1:
sgp30ebbrE4.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
07/16/2000 | 0015 | 07/17/2000 | 0530 |
Subject: | SGP/EBBR/E4 - E4 Negative SM5 Causes Incorrect Measurements |
DataStreams: | sgp30ebbrE4.b1 |
Description: | Negative soil moisture #5 caused the indicated measurements to be incorrect. |
Measurements: | sgp30ebbrE4.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
08/10/2000 | 0700 | 12/12/2000 | 0730 |
Subject: | SGP/EBBR/E4 - E4 SHF3 Large Negative |
DataStreams: | sgp30ebbrE4.b1 |
Description: | Soil Heat Flow #3 became large negative, causing the indicated measurements to be incorrect. |
Measurements: | sgp30ebbrE4.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
03/01/2000 | 1540 | 03/01/2000 | 1630 |
Subject: | SGP/EBBR/E4 - Missing Data |
DataStreams: | sgp15ebbrE4.b1, sgp30ebbrE4.b1, sgp5ebbrE4.b1 |
Description: | Data was missing because of AEM check and EBBR program reload. |
Measurements: | sgp5ebbrE4.b1:
sgp15ebbrE4.b1:
sgp30ebbrE4.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
08/07/2000 | 1710 | 08/07/2000 | 1930 |
Subject: | SGP/EBBR/E4 - Data Missing |
DataStreams: | sgp15ebbrE4.b1, sgp30ebbrE4.b1, sgp5ebbrE4.b1 |
Description: | Data was missing during the six month calibration |
Measurements: | sgp5ebbrE4.b1:
sgp15ebbrE4.b1:
sgp30ebbrE4.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
03/16/2000 | 1700 | 03/29/2000 | 1545 |
Subject: | SGP/EBBR/E4 - E4 Incorrect Data, AEM Stuck |
DataStreams: | sgp15ebbrE4.b1, sgp30ebbrE4.b1, sgp5ebbrE4.b1 |
Description: | During the period stated, the AEM was stuck in one position. The indicated measurements are incorrect because of this. |
Measurements: | sgp5ebbrE4.b1:
sgp15ebbrE4.b1:
sgp30ebbrE4.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
08/07/2000 | 1930 | 08/07/2000 | 2000 |
Subject: | SGP/EBBR/E4 - E4 Data Incorrect |
DataStreams: | sgp15ebbrE4.b1, sgp30ebbrE4.b1, sgp5ebbrE4.b1 |
Description: | The indicated data are incorrect, cause unknown. |
Measurements: | sgp5ebbrE4.b1:
sgp15ebbrE4.b1:
sgp30ebbrE4.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
07/13/2000 | 0200 | 07/16/2000 | 0000 |
Subject: | SGP/EBBR/E4 - E4 SM5 Drifting |
DataStreams: | sgp30ebbrE4.b1 |
Description: | The Soil moisture #5 was drifting around during this period and is characterized as suspect. The drifting was not so much as to affect soil, sensible, and latent heat fluxes. |
Measurements: | sgp30ebbrE4.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
12/11/2000 | 0145 | 12/11/2000 | 2215 |
Subject: | SGP/EBBR/E4 - EBBR E4 Wind Speed Iced |
DataStreams: | sgp15ebbrE4.b1, sgp30ebbrE4.b1, sgp5ebbrE4.b1 |
Description: | The anemometer was frozen stopped by freezing rain. Indicated data was incorrect. |
Measurements: | sgp5ebbrE4.b1:
sgp30ebbrE4.b1:
sgp15ebbrE4.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/08/2001 | 0130 | 03/14/2001 | 1601 |
Subject: | SGP EBBR E4 - E4 EBBR Soil Heat Flow #3 Incorrect |
DataStreams: | sgp15ebbrE4.b1, sgp30ebbrE4.b1 |
Description: | SHF #3 was large negative most of the time during the period indicated. Average soil heat flow, sensible heat flux, and latent heat flux are therefore incorrect. |
Measurements: | sgp30ebbrE4.b1:
sgp15ebbrE4.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
03/14/2001 | 1700 | 03/14/2001 | 1701 |
Subject: | SGP EBBR E4 - E4 EBBR Data Incorrect |
DataStreams: | sgp15ebbrE4.b1, sgp30ebbrE4.b1, sgp5ebbrE4.00, sgp5ebbrE4.b1 |
Description: | Re-loading the datalogger program caused all values to be incorrect; the time interval of the measurements is not correct, so the data is incorrect as well. |
Measurements: | sgp5ebbrE4.00:
sgp5ebbrE4.b1:
sgp15ebbrE4.b1:
sgp30ebbrE4.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
03/01/2000 | 1630 | 03/01/2000 | 1635 |
Subject: | SGP EBBR E4 - E4 EBBR Data Incorrect |
DataStreams: | sgp15ebbrE4.b1, sgp30ebbrE4.b1, sgp5ebbrE4.b1 |
Description: | The data was incorrect for the first time period after the datalogger program was reloaded. |
Measurements: | sgp5ebbrE4.b1:
sgp15ebbrE4.b1:
sgp30ebbrE4.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/25/2001 | 1415 | 04/25/2001 | 1446 |
11/07/2001 | 1520 | 11/07/2001 | 1600 |
Subject: | SGP EBBR E4 - E4 EBBR Data Incorrect During 6 Month Checks |
DataStreams: | sgp15ebbrE4.b1, sgp30ebbrE4.b1, sgp5ebbrE4.b1 |
Description: | The data was incorrect during the 6 month checks. |
Measurements: | sgp5ebbrE4.b1:
sgp15ebbrE4.b1:
sgp30ebbrE4.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/25/2001 | 1500 | 04/25/2001 | 1501 |
Subject: | SGP EBBR E4 - E4 EBBR Data Incorrect |
DataStreams: | sgp15ebbrE4.b1, sgp30ebbrE4.b1, sgp5ebbrE4.00, sgp5ebbrE4.b1 |
Description: | The data was incorrect immediately after 6 month checks were completed. |
Measurements: | sgp5ebbrE4.00:
sgp5ebbrE4.b1:
sgp15ebbrE4.b1:
sgp30ebbrE4.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
11/03/1994 | 1620 | 11/03/1994 | 1800 |
Subject: | SGP/EBBR/E4 - T/RH Check |
DataStreams: | sgp15ebbrE4.b1, sgp30ebbrE4.b1, sgp5ebbrE4.b1 |
Description: | During the month of November 1994, site operations personnel conducted field comparisons of the temperature and relative humidity sensors in the EBBRs and the HMI31 portable T/RH meter (with the removable probe). As is reflected in the home signal output, the automatic exchange mechanism was disabled in order to conduct the checks. Measurements were taken every 5 minutes, for a half hour each in the aspirated radiation shields (the HMI31 was inserted into the EBBR aspirated radiation shield to provide the same aspiration as the EBBR sensors received). Measurements of aspirator flow were also recorded. This information was provided to the mentor. The mentor then compared the field checks with the data recorded by the EBBRs. The periods of data and data fields that are incorrect because of the checks are listed below. Times are those at which the data are reported. Data Fields 5 minute: tair_top, tair_bot, thum_top, thum_bot, hum_top, hum_bot, vp_top, vp_bot 15 minute: rr_thum_r, rr_thum_l, mv_hum_r, mv_hum_l, tair_r, tair_l 30 minute: tair_top, tair_bot, thum_top, thum_bot, hum_top, hum_bot, vp_top, vp_bot, bowen, e, h 5 minute: 1620, 1625, 1630, 1635, 1640, 1645, 1650, 1655, 1700, 1705, 1710, 1715, 1720, 1725, 1730, 1735, 1740 15 minute: 1630, 1645, 1700, 1715, 1730, 1745 30 minute: 1630, 1700, 1730, 1800 (EDITORS NOTE: The following analysis refers to all EBBRs installed in Nov 1994) Results of the T/RH comparisons: The combined accuracy of the HMI31 and EBBR temperature sensors (thermocouples or PRTDs) is +/- 0.4 degrees C. The combined accuracy of the HMI31 and EBBR RH sensors is +/- 4% for RH less than 80%, and +/- 6% for RH greater than 80%. The combined accuracy for each pair of EBBR sensors of the same type is essentially the same as the quantities stated above. All of the pairs of EBBR sensors show differences that fall within the stated combined accuracies. Although this sounds wonderful, a few of the differences are close to the combined accuracy, which, because of the small differences in temperature being measured (normally smaller than the magnitude of the combined accuracy) could lead to some incorrect estimation of sensible and latent heat flux. However, unless there would be substantial differences of calibration slope of two sensors in a pair, the switching of height of the sensors every 15 minutes by the automatic exchange mechanism will remove the offset between the sensors. The comparisons between the EBBR sensors and the HMI31 T/RH meter showed much larger differences. The range of differences were: -2.4 to 0.0 degrees for the thermocouples, -2.1 to 0.1 degrees for the RH probe PRTDs, and -6.6 to 6.7 percent for the RH sensors. Six Thermocouples indicated differences from the HMI31 greater than the combined accuracy. Seven PRTDs indicated differences from the HMI31 greater than the combined accuracy. Four RH sensors indicated differences from the HMI31 greater than the combined accuracy. The temperature differences (for both thermocouples and PRTDs) were nearly all of one sign; the HMI31 indicated the greater temperature, which may suggest a bias in the HMI31 temperature measurement, even though a dozen differences of +/- 0.2 degrees were measured. Four differences of zero and only one positive difference (out of 40) were measured. Thirteen of the 20 RH differences were positive (HMI31 indicating the lower RH), with the differences near the level of the combined accuracies being approximately 50% positive and 50% negative. It does not appear that the HMI31 has a RH bias. Plots of EBBR sensor/HMI31 differences as a function of time from the installation of the individual sensors (a range of 10 to 30 months in the field) shows no obvious pattern of sensor drift with time. This is encouraging. |
Measurements: | sgp5ebbrE4.b1:
sgp15ebbrE4.b1:
sgp30ebbrE4.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
10/03/1995 | 1600 | 10/03/1995 | 1900 |
Subject: | SGP/EBBR/E4 - 3-month Check |
DataStreams: | sgp15ebbrE4.b1, sgp30ebbrE4.b1, sgp5ebbrE4.b1 |
Description: | During EBBR 3 month checks the Automatic Exchange Mechanism is disabled (reflected by home signals near zero) so that the two aspirator units can be placed at the same height. The measurements during this period, at least, do not produce correct outputs of bowen ratio (bowen), sensible heat flux (h), or latent heat flux (e), nor do the air temperature and relative humidity measurements indicate gradients. Checks performed before or after the AEM is disabled also lead to some incorrect data. |
Measurements: | sgp5ebbrE4.b1:
sgp15ebbrE4.b1:
sgp30ebbrE4.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
07/20/1995 | 1731 | 07/20/1995 | 1800 |
07/21/1995 | 0731 | 07/21/1995 | 0800 |
07/22/1995 | 1731 | 07/22/1995 | 1800 |
Subject: | SGP/EBBR/E4 - Reprocess: Soil Temperature Malfunction |
DataStreams: | sgp15ebbrE4.b1, sgp30ebbrE4.b1 |
Description: | During individual half hours on three days, soil moisture probe #1 indicated values that were below the acceptable minimum, for unknown reasons. The times of incorrect data and the affected quantities are shown below. SM1: Half Hour 15 Minute 20 July: 1800 GMT 1745, 1800 GMT 21 July: 0800 GMT 0745, 0800 GMT 22 July: 1800 GMT 1745, 1800 GMT 15 minute: r_sm1 30 minute: sm1, c_shf1, cs1, ces1, g1, ave_shf, e, h |
Measurements: | sgp15ebbrE4.b1:
sgp30ebbrE4.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
09/11/1993 | 1700 | 09/23/1993 | 1600 |
Subject: | SGP/EBBR/E4 - Reprocess: Bad soil heat flux sensor #4 |
DataStreams: | sgp15ebbrE4.b1, sgp30ebbrE4.b1 |
Description: | On September 11, 1993 soil heat flux sensor #4 of the Plevna, KS EBBR (E4) malfunctioned. The sensor was replaced September 23, 1993 before 1600. Corrupted 30 minute values of shf4, c_shf4, g4, ave_shf, h, and e, and corrupted 15 minute values of mv_hft4 resulted from the sensor malfunction. The quantities shf4, c_shf4, g4, and mv_hft4 are bad data values and are not recoverable. The other quantities can be recalculated using the three functioning sets of soil sensors. (Note: Soil heat flux sensor #5 was also malfunctioning during the time periods identified and has therefore been eliminated from the recalculation equations. This problem is identified in a separate DQR.) ave_shf = (g1 + g2 + g3)/3 e = -(q + ave_shf)/(1 + bowen) h = -(e + ave_shf + q) |
Measurements: | sgp15ebbrE4.b1:
sgp30ebbrE4.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
09/01/1993 | 0000 | 11/04/1993 | 1900 |
Subject: | SGP/EBBR/E4 - Reprocess: Bad soil heat flux sensor #5 |
DataStreams: | sgp15ebbrE4.b1, sgp30ebbrE4.b1 |
Description: | On September 1, 1993 the EBBR system at Plevna, E4, was relocated in the same field. However, soil contact for soil heat flux plate #5 was not properly established. This resulted in somewhat high positive and very high negative outputs, depending on the direction of soil heat flow. Corrupted 30 minute values of shf4, c_shf4, g4, ave_shf, h, and e, and corrupted 15 minute values of mv_hft4 resulted. The quantities shf4, c_shf4, g4, and mv_hft4 are bad data values and are not recoverable. The other quantities can be recalculated using the four functioning sets of soil sensors. (Note: Soil heat flux sensor #4 was also malfunctioning during part of the time period identified. That problem is identified in two separate DQRs. See D931108.5 and D020701.2 for the equations to use while sensor #4 was not working properly) ave_shf = (g1 + g2 + g3 + g4)/4 e = -(q + ave_shf)/(1 + bowen) h = -(e + ave_shf + q) |
Measurements: | sgp15ebbrE4.b1:
sgp30ebbrE4.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
11/15/1995 | 1101 | 11/15/1995 | 1130 |
11/19/1995 | 2301 | 11/19/1995 | 2330 |
Subject: | SGP/EBBR/E4 - Soil Moisture Probe 5 Offscale |
DataStreams: | sgp15ebbrE4.b1, sgp30ebbrE4.b1 |
Description: | During two half hours, soil moisture probe #5 indicated values that were offscale for an unknown reasons. Affected data values are: 15 minute: rr_sm5 30 minute: sm1, c_shf5, cs5, ces5, g5, ave_shf, e, h Sensible, latent, and soil heat fluxes can be recalculated using the change in energy storage of probes 1-4 as follows. ave_shf = (g1 + g2 + g3 + g4)/4 e = -(q + ave_shf)/(1 + bowen) h = -(e + ave_shf +q) |
Measurements: | sgp15ebbrE4.b1:
sgp30ebbrE4.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
02/07/2002 | 1400 | 02/13/2002 | 1531 |
03/26/2002 | 0130 | 06/05/2002 | 1501 |
Subject: | SGP/EBBR/E4 - AEM Hung |
DataStreams: | sgp15ebbrE4.b1, sgp30ebbrE4.b1, sgp5ebbrE4.b1 |
Description: | |
Measurements: | sgp5ebbrE4.b1:
sgp15ebbrE4.b1:
sgp30ebbrE4.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
06/19/2002 | 1500 | 06/19/2002 | 1631 |
Subject: | SGP/EBBR/E4 - Data Incorrect or Zero |
DataStreams: | sgp15ebbrE4.b1, sgp30ebbrE4.b1, sgp5ebbrE4.00, sgp5ebbrE4.b1 |
Description: | After the barometer was changed out, the measurements were zero or otherwise incorrect. |
Measurements: | sgp5ebbrE4.00:
sgp5ebbrE4.b1:
sgp15ebbrE4.b1:
sgp30ebbrE4.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
05/22/2002 | 1500 | 05/22/2002 | 1531 |
Subject: | SGP/EBBR/E4 - 6 Month Checks |
DataStreams: | sgp15ebbrE4.b1, sgp30ebbrE4.b1, sgp5ebbrE4.b1 |
Description: | The indicated measurements were incorrect during the six month checks. |
Measurements: | sgp5ebbrE4.b1:
sgp15ebbrE4.b1:
sgp30ebbrE4.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 |
---|---|---|---|
11/06/2002 | 1700 | 11/06/2002 | 1730 |
Subject: | SGP/EBBR/E4 - Data Incorrect during 6 month checks |
DataStreams: | sgp15ebbrE4.b1, sgp30ebbrE4.b1, sgp5ebbrE4.b1 |
Description: | Some of the measurements are incorrect during the 6 month checks. |
Measurements: | sgp5ebbrE4.b1:
sgp15ebbrE4.b1:
sgp30ebbrE4.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
10/24/2002 | 0735 | 10/24/2002 | 1830 |
Subject: | SGP/EBBR/E4 - Wind Speed Incorrect |
DataStreams: | sgp15ebbrE4.b1, sgp30ebbrE4.b1, sgp5ebbrE4.b1 |
Description: | The wind speed sensor was frozen stopped by ice. The wind speed and residual wind speed measurements are incorrect. |
Measurements: | sgp5ebbrE4.b1:
sgp30ebbrE4.b1:
sgp15ebbrE4.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
08/07/2002 | 0300 | 08/07/2002 | 0329 |
Subject: | SGP/EBBR/E4 - Soil Moisture #4 zero |
DataStreams: | sgp30ebbrE4.b1 |
Description: | Soil Moisture #4 was zero only in the 30 minute data. It can be assumed that there was an error in reading the data from the Campbell datalogger, as no other measurements, including those calculated from soil moisture #4, are affected. |
Measurements: | sgp30ebbrE4.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
02/01/2003 | 0000 | 02/06/2003 | 0830 |
02/14/2003 | 2330 | 02/05/2003 | 1100 |
02/22/2003 | 0000 | 02/23/2003 | 0700 |
Subject: | SGP/EBBR/E4 - Soil Temperature #5 Incorrect |
DataStreams: | sgp15ebbrE4.b1, sgp30ebbrE4.b1 |
Description: | Soil Temperature #5 was incorrect. This affected many measurements, including sensible and latent heat fluxes. |
Measurements: | sgp15ebbrE4.b1:
sgp30ebbrE4.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
05/07/2003 | 1630 | 05/07/2003 | 1700 |
Subject: | SGP/EBBR/E4 - 6 Month Checks |
DataStreams: | sgp15ebbrE4.b1, sgp30ebbrE4.b1, sgp5ebbrE4.b1 |
Description: | Many measurements were incorrect while the AEM was positioned with both aspirators at the same height for comparison checks. |
Measurements: | sgp5ebbrE4.b1:
sgp15ebbrE4.b1:
sgp30ebbrE4.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
10/08/2003 | 1530 | 10/08/2003 | 1645 |
Subject: | SGP/EBBR/E4 - 6 Month Checks |
DataStreams: | sgp15ebbrE4.b1, sgp30ebbrE4.b1, sgp5ebbrE4.b1 |
Description: | Many measurements were incorrect while the AEM was positioned with both aspirators at the same height for comparison checks. |
Measurements: | sgp5ebbrE4.b1:
sgp15ebbrE4.b1:
sgp30ebbrE4.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
12/09/2003 | 1335 | 12/10/2003 | 1710 |
Subject: | SGP/EBBR/E4 - Wind Speed Sensor Frozen By Ice Storm |
DataStreams: | sgp15ebbrE4.b1, sgp30ebbrE4.b1, sgp5ebbrE4.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: | sgp5ebbrE4.b1:
sgp30ebbrE4.b1:
sgp15ebbrE4.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/26/2004 | 0110 | 01/27/2004 | 2135 |
02/01/2004 | 0000 | 02/04/2004 | 1430 |
Subject: | SGP/EBBR/E4 - Wind Speed Frozen Stopped By Ice |
DataStreams: | sgp15ebbrE4.b1, sgp30ebbrE4.b1, sgp5ebbrE4.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: | sgp5ebbrE4.b1:
sgp30ebbrE4.b1:
sgp15ebbrE4.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/27/2004 | 1125 | 01/27/2004 | 1850 |
Subject: | SGP/EBBR/E4 - Wind Direction Frozen Stopped By Ice |
DataStreams: | sgp30ebbrE4.b1, sgp5ebbrE4.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: | sgp5ebbrE4.b1:
sgp30ebbrE4.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
07/25/2004 | 1200 | 07/28/2004 | 1500 |
Subject: | SGP/EBBR/E4 - Net Radiation Incorrect, Sensible and Latent Heat Fluxes Incorrect |
DataStreams: | sgp30ebbrE4.b1, sgp5ebbrE4.b1 |
Description: | The Net Radiometer domes were broken and rain entered, causing net radiation values to be too large during the period. |
Measurements: | sgp5ebbrE4.b1:
sgp30ebbrE4.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
10/20/2004 | 1600 | 10/20/2004 | 1630 |
Subject: | SGP/EBBR/E4 - 6 Month Checks |
DataStreams: | sgp15ebbrE4.b1, sgp30ebbrE4.b1, sgp5ebbrE4.b1 |
Description: | Many measurements were incorrect while the AEM was positioned with both aspirators at the same height for comparison checks. |
Measurements: | sgp5ebbrE4.b1:
sgp15ebbrE4.b1:
sgp30ebbrE4.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/03/2005 | 0635 | 01/05/2005 | 0200 |
Subject: | SGP/EBBR/E4 - Wind Speed Frozen Stopped By Ice Storm |
DataStreams: | sgp15ebbrE4.b1, sgp30ebbrE4.b1, sgp5ebbrE4.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: | sgp5ebbrE4.b1:
sgp30ebbrE4.b1:
sgp15ebbrE4.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/03/2005 | 0845 | 01/05/2005 | 0200 |
Subject: | SGP/EBBR/E4 - Wind Direction Frozen Stopped By Ice Storm |
DataStreams: | sgp15ebbrE4.b1, sgp30ebbrE4.b1, sgp5ebbrE4.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: | sgp5ebbrE4.b1:
sgp30ebbrE4.b1:
sgp15ebbrE4.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
02/09/2005 | 1230 | 02/09/2005 | 1600 |
Subject: | SGP/EBBR/E4 - Wind Direction Frozen Stopped By Ice |
DataStreams: | sgp15ebbrE4.b1, sgp30ebbrE4.b1, sgp5ebbrE4.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: | sgp5ebbrE4.b1:
sgp30ebbrE4.b1:
sgp15ebbrE4.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/12/2005 | 1330 | 01/12/2005 | 1715 |
02/07/2005 | 0300 | 02/09/2005 | 1630 |
Subject: | SGP/EBBR/E4 - Wind Speed Frozen Stopped By Ice |
DataStreams: | sgp15ebbrE4.b1, sgp30ebbrE4.b1, sgp5ebbrE4.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: | sgp5ebbrE4.b1:
sgp30ebbrE4.b1:
sgp15ebbrE4.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
02/24/2005 | 0105 | 02/24/2005 | 1500 |
Subject: | SGP/EBBR/E4 - Wind Speed and Direction Frozen by Ice Storm |
DataStreams: | sgp15ebbrE4.b1, sgp30ebbrE4.b1, sgp5ebbrE4.b1 |
Description: | The wind speed and direction sensors were frozen during an ice storm on 2/24/05. |
Measurements: | sgp5ebbrE4.b1:
sgp30ebbrE4.b1:
sgp15ebbrE4.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
03/20/2005 | 2100 | 03/27/2005 | 1500 |
Subject: | SGP/EBBR/E4 - Soil Temperature #5 Spiking Upwards |
DataStreams: | sgp30ebbrE4.b1 |
Description: | Soil temperature #5 experienced some erratic behavior during nighttime, spiking upwards slightly at times (mouse activity?). This caused soil moisture #5 to be corrected downwards very slightly. |
Measurements: | sgp30ebbrE4.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
05/24/2005 | 0830 | 06/01/2005 | 1600 |
Subject: | SGP/EBBR/E4 - Water in Net Radiometer |
DataStreams: | sgp15ebbrE4.b1, sgp30ebbrE4.b1, sgp5ebbrE4.b1 |
Description: | The net radiometer had water in the bottom dome. All net radiation, sensible heat flux, and latent heat flux data during this period is incorrect. |
Measurements: | sgp5ebbrE4.b1:
sgp15ebbrE4.b1:
sgp30ebbrE4.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
05/13/2005 | 1130 | 05/13/2005 | 1930 |
Subject: | SGP/EBBR/E4 - All Measurements Incorrect Due to Low Battery Voltage |
DataStreams: | sgp15ebbrE4.b1, sgp30ebbrE4.b1, sgp5ebbrE4.b1 |
Description: | All measurements were incorrect as battery voltage fell below the level that is required to ensure correct data values. |
Measurements: | sgp5ebbrE4.b1:
sgp15ebbrE4.b1:
sgp30ebbrE4.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/01/2001 | 0000 | 03/23/2005 | 1800 |
Subject: | SGP/EBBR/E4 - Improved EBBR CR10 Program |
DataStreams: | sgp30ebbrE4.b1 |
Description: | Effective 20050323.1800, the EBBR.E4 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 20050323, 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 sgp30ebbrE4.b1 data stream. The earlier version of the CR10 program was also used on previous EBBR datastream names (e.g. sgp30ebbrE4.a1). |
Measurements: | sgp30ebbrE4.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
03/09/2005 | 1730 | 03/23/2005 | 1800 |
Subject: | SGP/EBBR/E4 - Average Soil Heat Flux Incorrect |
DataStreams: | sgp30ebbrE4.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: | sgp30ebbrE4.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
10/14/2003 | 0000 | 08/16/2005 | 2359 |
Subject: | SGP/EBBR/E4 - metadata corrections |
DataStreams: | sgp15ebbrE4.b1, sgp30ebbrE4.b1, sgp5ebbrE4.b1 |
Description: | On 20050817, a series of metadata corrections and additions were completed. These metadata changes apply to all EBBR.E4 data collected by ARM back to the installation of the instrument in April 1993. Please see the current metadata for correct information. These changes do not affect data values or quality. The changes are summarized below: 1) Update of "sensor location" information 2) Addition of installation dates for the systems 3) Correction of soil moisture units (from "by volume" to "gravimetric") |
Measurements: | sgp5ebbrE4.b1:
sgp15ebbrE4.b1:
sgp30ebbrE4.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
10/20/2005 | 1315 | 11/02/2005 | 0330 |
Subject: | SGP/EBBR/E4 - Net Radiation, Sensible and Latent Heat Fluxes Incorrect |
DataStreams: | sgp15ebbrE4.b1, sgp30ebbrE4.b1, sgp5ebbrE4.b1 |
Description: | The top dome of the net radiometer was broken, resulting in net radiations that were too small, and thus sensible and latent heat fluxes that were too small. |
Measurements: | sgp5ebbrE4.b1:
sgp15ebbrE4.b1:
sgp30ebbrE4.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
12/18/2005 | 0400 | 12/28/2005 | 1630 |
Subject: | SGP/EBBR/E4 - Sensible and Latent Heat Fluxes Incorrect |
DataStreams: | sgp15ebbrE4.b1, sgp30ebbrE4.b1, sgp5ebbrE4.b1 |
Description: | The AEM hung at one position for an extended period, causing sensible and latent heat fluxes and gradient measurements to be incorrect. |
Measurements: | sgp5ebbrE4.b1:
sgp15ebbrE4.b1:
sgp30ebbrE4.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
03/20/2006 | 1300 | 03/20/2006 | 1630 |
03/21/2006 | 0530 | 03/21/2006 | 1530 |
Subject: | SGP/EBBR/E4 - Wind Speed Sensor Frozen Stopped |
DataStreams: | sgp15ebbrE4.b1, sgp30ebbrE4.b1, sgp5ebbrE4.b1 |
Description: | Freezing rain froze the Wind Speed sensor to a stopped condition. |
Measurements: | sgp5ebbrE4.b1:
sgp30ebbrE4.b1:
sgp15ebbrE4.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
08/19/2006 | 1700 | 11/01/2006 | 1830 |
Subject: | SGP/EBBR/E4 - Soil Heat Flow #2 Incorrect at times |
DataStreams: | sgp15ebbrE4.b1, sgp30ebbrE4.b1 |
Description: | Soil Heat Flow #2 sometimes dropped to large negative values during daytime. |
Measurements: | sgp15ebbrE4.b1:
sgp30ebbrE4.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
03/24/2007 | 0100 | 03/26/2007 | 1700 |
Subject: | SGP/EBBR/E4 - Wind Direction Stuck at Zero |
DataStreams: | sgp15ebbrE4.b1, sgp30ebbrE4.b1, sgp5ebbrE4.b1 |
Description: | The wind direction sensor was stuck at zero. |
Measurements: | sgp5ebbrE4.b1:
sgp30ebbrE4.b1:
sgp15ebbrE4.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
05/06/2007 | 1630 | 05/16/2007 | 1840 |
Subject: | SGP/EBBR/E4 - Instrument problem |
DataStreams: | sgp15ebbrE4.b1, sgp30ebbrE4.b1, sgp5ebbrE4.b1 |
Description: | Wind direction was flat lining near zero and incorrect. |
Measurements: | sgp5ebbrE4.b1:
sgp30ebbrE4.b1:
sgp15ebbrE4.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
08/09/2007 | 0230 | 08/24/2007 | 1930 |
Subject: | SGP/EBBR/E4 - Wind Direction Incorrect |
DataStreams: | sgp15ebbrE4.b1, sgp30ebbrE4.b1, sgp5ebbrE4.b1 |
Description: | The EBBR wind direction sat at about 60 degrees from 08/09 0230 GMT through 08/24 1930 GMT and was incorrect. |
Measurements: | sgp5ebbrE4.b1:
sgp30ebbrE4.b1:
sgp15ebbrE4.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/02/2008 | 2000 | 05/15/2008 | 1700 |
05/16/2008 | 0300 | 05/29/2008 | 1730 |
Subject: | SGP/EBBR/E4 - AEM Blown Fuse, Sensible and Latent Heat Fluxes Incorrect |
DataStreams: | sgp30ebbrE4.b1 |
Description: | The AEM Fuse was blown, the AEM was not switching, and thus sensible and latent heat flux measurements were incorrect. |
Measurements: | sgp30ebbrE4.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
08/24/2007 | 2000 | 09/05/2007 | 1630 |
Subject: | SGP/EBBR/E4 - Reprocess: Wind Direction Incorrect |
DataStreams: | sgp15ebbrE4.b1, sgp30ebbrE4.b1, sgp5ebbrE4.b1 |
Description: | The wind direction was misaligned by 180 degrees. If the wind direction was 180 degrees or less, add 180 degrees to give the correct direction. If the wind direction was greater than 180 degrees, subtract 180 degrees to give the correct direction. |
Measurements: | sgp5ebbrE4.b1:
sgp30ebbrE4.b1:
sgp15ebbrE4.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
10/20/2008 | 0830 | 11/13/2008 | 1830 |
Subject: | SGP/EBBR/E4 - Wind Direction 20 Degrees Low |
DataStreams: | sgp15ebbrE4.b1, sgp30ebbrE4.b1, sgp5ebbrE4.b1 |
Description: | The wind direction was too low by 20 degrees low. |
Measurements: | sgp5ebbrE4.b1:
sgp30ebbrE4.b1:
sgp15ebbrE4.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/27/2009 | 1045 | 01/28/2009 | 1540 |
Subject: | SGP/EBBR/E4 - Wind Speed Incorrect |
DataStreams: | sgp15ebbrE4.b1, sgp30ebbrE4.b1, sgp5ebbrE4.b1 |
Description: | The wind speed sensor was stopped by freezing rain. |
Measurements: | sgp5ebbrE4.b1:
sgp30ebbrE4.b1:
sgp15ebbrE4.b1:
|