DQR ID | Subject | Data Streams Affected |
---|---|---|
D041222.3 | SGP/EBBR/E20 - Soil Moisture #4 and Soil Temperature #4 Incorrect | sgp15ebbrE20.b1, sgp30ebbrE20.b1 |
D050206.14 | SGP/EBBR/E20 - Wind Speed Frozen Stopped By Ice Storm | sgp15ebbrE20.b1, sgp30ebbrE20.b1, sgp5ebbrE20.b1 |
D050207.10 | SGP/EBBR/E20 - Wind Direction Frozen Stopped By Ice Storm | sgp15ebbrE20.b1, sgp30ebbrE20.b1, sgp5ebbrE20.b1 |
D050404.1 | SGP/EBBR/E20 - Wrong Datalogger Program Installed | sgp30ebbrE20.b1 |
D050404.4 | SGP/EBBR/E20 - Temp. of thum_left Incorrect At Times | sgp15ebbrE20.b1, sgp30ebbrE20.b1, sgp5ebbrE20.b1 |
D050719.13 | SGP/EBBR/E20 - Improved EBBR CR10 Program | sgp30ebbrE20.b1 |
D050922.2 | SGP/EBBR/E20 - Soil Temperature and Soil Moisture #4 Measurements Incorrect | sgp15ebbrE20.b1, sgp30ebbrE20.b1 |
D051106.28 | SGP/EBBR/E20 - Average Soil Heat Flux Incorrect | sgp30ebbrE20.b1 |
D051112.7 | SGP/EBBR/E20 - metadata corrections | sgp15ebbrE20.b1, sgp30ebbrE20.b1, sgp5ebbrE20.b1 |
D060111.13 | SGP/EBBR/E20 - Data Incorrect During J-Panel Replacement | sgp15ebbrE20.b1, sgp30ebbrE20.b1, sgp5ebbrE20.b1 |
D060501.22 | SGP/EBBR/E20 - Suspect Measurements | sgp15ebbrE20.b1, sgp30ebbrE20.b1, sgp5ebbrE20.b1 |
D060622.6 | SGP/EBBR/E20 - Net Radiation, Fluxes Too Large | sgp30ebbrE20.b1, sgp5ebbrE20.b1 |
D070716.2 | SGP/EBBR/E20 - Reprocess: Wind Direction 20 Degrees Low | sgp15ebbrE20.b1, sgp30ebbrE20.b1, sgp5ebbrE20.b1 |
Start Date | Start Time | End Date | End Time |
---|---|---|---|
11/02/2004 | 1330 | 03/02/2005 | 1930 |
Subject: | SGP/EBBR/E20 - Soil Moisture #4 and Soil Temperature #4 Incorrect |
DataStreams: | sgp15ebbrE20.b1, sgp30ebbrE20.b1 |
Description: | Failures of a multiplexer channel and a J-panel channel caused soil temperature #4 and soil moisture #4 to spike and drift at times. Replacement of the failed equipment solved the problem. |
Measurements: | sgp30ebbrE20.b1:
sgp15ebbrE20.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/05/2005 | 1420 | 01/07/2005 | 1650 |
Subject: | SGP/EBBR/E20 - Wind Speed Frozen Stopped By Ice Storm |
DataStreams: | sgp15ebbrE20.b1, sgp30ebbrE20.b1, sgp5ebbrE20.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: | sgp30ebbrE20.b1:
sgp15ebbrE20.b1:
sgp5ebbrE20.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/07/2005 | 0150 | 01/07/2005 | 1425 |
Subject: | SGP/EBBR/E20 - Wind Direction Frozen Stopped By Ice Storm |
DataStreams: | sgp15ebbrE20.b1, sgp30ebbrE20.b1, sgp5ebbrE20.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: | sgp30ebbrE20.b1:
sgp15ebbrE20.b1:
sgp5ebbrE20.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
03/30/2005 | 2000 | 04/13/2005 | 1700 |
Subject: | SGP/EBBR/E20 - Wrong Datalogger Program Installed |
DataStreams: | sgp30ebbrE20.b1 |
Description: | ts4 went offscale and sm4 dropped to a constant 16% when a "new" program was installed on 3/30/05. The wrong program was installed. Because ts4 did not change with time, it did not mess up the calculation of e and h. e and h are slightly overestimated, but only by about 1%, far less than the system error. This is a rare type of instrument problem where the concequences are minimal. Therefore, e and h are not listed as incorrect in this DQR and are still usable during the stated period. |
Measurements: | sgp30ebbrE20.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
03/20/2005 | 1230 | 04/27/2005 | 2000 |
Subject: | SGP/EBBR/E20 - Temp. of thum_left Incorrect At Times |
DataStreams: | sgp15ebbrE20.b1, sgp30ebbrE20.b1, sgp5ebbrE20.b1 |
Description: | The temperature portion of the left T/RH probe temperature spiked at times. This was caused by a faulty surge protector in the J-Panel. |
Measurements: | sgp30ebbrE20.b1:
sgp15ebbrE20.b1:
sgp5ebbrE20.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/01/2001 | 0000 | 03/30/2005 | 1900 |
Subject: | SGP/EBBR/E20 - Improved EBBR CR10 Program |
DataStreams: | sgp30ebbrE20.b1 |
Description: | Effective 20050330.1900, the EBBR.E20 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 20050330, 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 sgp30ebbrE20.b1 data stream. The earlier version of the CR10 program was also used on previous EBBR datastream names (e.g. sgp30ebbrE20.a1). |
Measurements: | sgp30ebbrE20.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
07/05/2005 | 1730 | 07/06/2005 | 1930 |
08/23/2005 | 1900 | 08/31/2005 | 1700 |
09/01/2005 | 1730 | 09/02/2005 | 0300 |
09/02/2005 | 1100 | 09/15/2005 | 2230 |
09/16/2005 | 0100 | 09/28/2005 | 1830 |
Subject: | SGP/EBBR/E20 - Soil Temperature and Soil Moisture #4 Measurements Incorrect |
DataStreams: | sgp15ebbrE20.b1, sgp30ebbrE20.b1 |
Description: | The ts4 sensor reported 99999 values because the sensor leads were loose. Soil moisture #4 reported low values (steady 16%) during this time period. The sensible and latent heat fluxes were not affected by this problem, only soil temperature and soil moisture #4. See soil temperatures and soil moistures from sets #2, #3, and #5 for correct values (note: soil temperature #1 was having problems during the same time). |
Measurements: | sgp30ebbrE20.b1:
sgp15ebbrE20.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
03/02/2005 | 1900 | 03/30/2005 | 1900 |
Subject: | SGP/EBBR/E20 - Average Soil Heat Flux Incorrect |
DataStreams: | sgp30ebbrE20.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: | sgp30ebbrE20.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
10/15/2003 | 0000 | 07/22/2005 | 2359 |
Subject: | SGP/EBBR/E20 - metadata corrections |
DataStreams: | sgp15ebbrE20.b1, sgp30ebbrE20.b1, sgp5ebbrE20.b1 |
Description: | On 20050723, a series of metadata corrections and additions were completed. These metadata changes apply to all EBBR.E20 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: | sgp30ebbrE20.b1:
sgp15ebbrE20.b1:
sgp5ebbrE20.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
12/21/2005 | 0930 | 12/21/2005 | 1730 |
Subject: | SGP/EBBR/E20 - Data Incorrect During J-Panel Replacement |
DataStreams: | sgp15ebbrE20.b1, sgp30ebbrE20.b1, sgp5ebbrE20.b1 |
Description: | Much of the data was incorrect during replacement of J-Panel #1. |
Measurements: | sgp30ebbrE20.b1:
sgp15ebbrE20.b1:
sgp5ebbrE20.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
02/22/2006 | 0300 | 02/25/2006 | 1630 |
Subject: | SGP/EBBR/E20 - Suspect Measurements |
DataStreams: | sgp15ebbrE20.b1, sgp30ebbrE20.b1, sgp5ebbrE20.b1 |
Description: | Some measurements may be incorrect because of low supply voltage. |
Measurements: | sgp30ebbrE20.b1:
sgp15ebbrE20.b1:
sgp5ebbrE20.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
06/17/2006 | 0900 | 06/20/2006 | 1915 |
Subject: | SGP/EBBR/E20 - Net Radiation, Fluxes Too Large |
DataStreams: | sgp30ebbrE20.b1, sgp5ebbrE20.b1 |
Description: | Net Radiation was way too large because of water in the bottom dome. This resulted in the sensible and latent heat fluxes being too large also. |
Measurements: | sgp30ebbrE20.b1:
sgp5ebbrE20.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
07/10/2007 | 1500 | 09/12/2007 | 2045 |
Subject: | SGP/EBBR/E20 - Reprocess: Wind Direction 20 Degrees Low |
DataStreams: | sgp15ebbrE20.b1, sgp30ebbrE20.b1, sgp5ebbrE20.b1 |
Description: | The EBBR wind direction was found to be misaligned 20 degrees low. This bias should have had no effect on the res_ws or sigma_wd measurements. |
Measurements: | sgp30ebbrE20.b1:
sgp15ebbrE20.b1:
sgp5ebbrE20.b1:
|