DQR ID | Subject | Data Streams Affected |
---|---|---|
D020716.18 | SGP/EBBR/E26 - 6 Month Checks | sgp15ebbrE26.a1, sgp15ebbrE26.b1, sgp30ebbrE26.a1, sgp30ebbrE26.b1, sgp5ebbrE26.a1 |
D020717.37 | SGP/EBBR/E26 - Measurements Zero | sgp15ebbrE26.a1, sgp15ebbrE26.b1, sgp30ebbrE26.a1, sgp30ebbrE26.b1, sgp5ebbrE26.00, sgp5ebbrE26.a1 |
D020717.39 | SGP/EBBR/E26 - Multiplexer 2 Failure From High Temperature | sgp15ebbrE26.a1, sgp15ebbrE26.b1, sgp30ebbrE26.a1, sgp30ebbrE26.b1, sgp5ebbrE26.a1 |
D030110.27 | SGP/EBBR/E26 - Data Incorrect during 6 month checks | sgp15ebbrE26.a1, sgp15ebbrE26.b1, sgp30ebbrE26.a1, sgp30ebbrE26.b1, sgp5ebbrE26.a1 |
D030117.26 | SGP/EBBR/E26 - Measurements zero following logger restart | sgp15ebbrE26.a1, sgp15ebbrE26.b1, sgp30ebbrE26.a1, sgp30ebbrE26.b1, sgp5ebbrE26.a1 |
D030117.27 | SGP/EBBR/E26 - Multiplexer Problem | sgp15ebbrE26.a1, sgp15ebbrE26.b1, sgp30ebbrE26.a1, sgp30ebbrE26.b1, sgp5ebbrE26.a1 |
D030117.29 | SGP/EBBR/E26 - Battery Voltage Low | sgp15ebbrE26.a1, sgp15ebbrE26.b1, sgp30ebbrE26.a1, sgp30ebbrE26.b1, sgp5ebbrE26.a1 |
D030128.2 | SGP/EBBR/E26 - AEM Hung | sgp15ebbrE26.a1, sgp15ebbrE26.b1, sgp30ebbrE26.a1, sgp30ebbrE26.b1, sgp5ebbrE26.a1 |
D030128.3 | SGP/EBBR/E26 - Data zeros following logger restart | sgp15ebbrE26.a1, sgp15ebbrE26.b1, sgp30ebbrE26.a1, sgp30ebbrE26.b1, sgp5ebbrE26.a1 |
D030128.4 | SGP/EBBR/E26 - Left Air Temperature Incorrect | sgp15ebbrE26.a1, sgp15ebbrE26.b1, sgp30ebbrE26.a1, sgp30ebbrE26.b1, sgp5ebbrE26.a1 |
D030514.8 | SGP/EBBR/E26 - E26 EBBR Soil Heat Flow #1 Incorrect | sgp15ebbrE26.a1, sgp15ebbrE26.b1, sgp30ebbrE26.a1, sgp30ebbrE26.b1 |
D030711.6 | SGP/EBBR/E26 -Right Air Temperature Incorrect | sgp15ebbrE26.a1, sgp15ebbrE26.b1, sgp30ebbrE26.a1, sgp30ebbrE26.b1, sgp5ebbrE26.a1 |
D030712.23 | SGP/EBBR/E26 - 6 Month Checks | sgp15ebbrE26.a1, sgp15ebbrE26.b1, sgp30ebbrE26.a1, sgp30ebbrE26.b1, sgp5ebbrE26.a1 |
D030728.4 | SGP/EBBR/E26 - Soil Heat Flow #5 Large Positive | sgp15ebbrE26.a1, sgp15ebbrE26.b1, sgp30ebbrE26.a1, sgp30ebbrE26.b1 |
D031103.1 | SGP/EBBR/E26 - AEM Home Signals Incorrect, Surface Fluxes Incorrect | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1 |
D031204.21 | SGP/EBBR/E26 - 6 Month Checks | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1 |
D031211.3 | SGP/EBBR/E26 - Spark Gap Bad, Pressure Incorrect | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1 |
D031222.24 | SGP/EBBR/E26 - Wind Speed Sensor Frozen By Ice Storm | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1 |
D031222.25 | SGP/EBBR/E26 - Wind Direction Sensor Frozen By Ice Storm | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1 |
D040304.28 | SGP/EBBR/E26 - Wind Speed Frozen Stopped By Ice | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1 |
D041222.1 | SGP/EBBR/E26 - Spark Gap Bad, Pressure Incorrect | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.a1 |
D051112.9 | SGP/EBBR/E26 - metadata corrections | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1 |
Start Date | Start Time | End Date | End Time |
---|---|---|---|
05/02/2002 | 1500 | 05/02/2002 | 1531 |
Subject: | SGP/EBBR/E26 - 6 Month Checks |
DataStreams: | sgp15ebbrE26.a1, sgp15ebbrE26.b1, sgp30ebbrE26.a1, sgp30ebbrE26.b1, sgp5ebbrE26.a1 |
Description: | The indicated measurements were incorrect during the 6 month checks. |
Measurements: | sgp5ebbrE26.a1:
sgp15ebbrE26.b1:
sgp15ebbrE26.a1:
sgp30ebbrE26.b1:
sgp30ebbrE26.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
05/30/2002 | 1500 | 05/30/2002 | 1501 |
Subject: | SGP/EBBR/E26 - Measurements Zero |
DataStreams: | sgp15ebbrE26.a1, sgp15ebbrE26.b1, sgp30ebbrE26.a1, sgp30ebbrE26.b1, sgp5ebbrE26.00, sgp5ebbrE26.a1 |
Description: | The measurements are often zero after a CR10 datalogger restart, as occurred here. |
Measurements: | sgp5ebbrE26.a1:
sgp15ebbrE26.b1:
sgp15ebbrE26.a1:
sgp30ebbrE26.b1:
sgp5ebbrE26.00:
sgp30ebbrE26.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
06/01/2002 | 2115 | 06/30/2002 | 2356 |
Subject: | SGP/EBBR/E26 - Multiplexer 2 Failure From High Temperature |
DataStreams: | sgp15ebbrE26.a1, sgp15ebbrE26.b1, sgp30ebbrE26.a1, sgp30ebbrE26.b1, sgp5ebbrE26.a1 |
Description: | Multiplexer 2 is failing during times of control box temperatures above 29 degrees C. The failure begins in the last channel and progresses to lower channels as the temperature increases. It has not yet been determined whether the failure is in the relays or a solid state component of the multiplexer. This condition is probably due to the aging of the device and the millions of cycles that this 10 year old device has made. More failures of this sort may occur in the future. A cure is being sought aside from replacement of the multiplexers to prevent the problem. The indicated measurements need to be inspected to determine which ones are usable. |
Measurements: | sgp5ebbrE26.a1:
sgp15ebbrE26.b1:
sgp15ebbrE26.a1:
sgp30ebbrE26.b1:
sgp30ebbrE26.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
11/27/2002 | 1605 | 11/27/2002 | 1635 |
Subject: | SGP/EBBR/E26 - Data Incorrect during 6 month checks |
DataStreams: | sgp15ebbrE26.a1, sgp15ebbrE26.b1, sgp30ebbrE26.a1, sgp30ebbrE26.b1, sgp5ebbrE26.a1 |
Description: | Some of the measurements are incorrect during the 6 month checks. |
Measurements: | sgp5ebbrE26.a1:
sgp15ebbrE26.b1:
sgp15ebbrE26.a1:
sgp30ebbrE26.b1:
sgp30ebbrE26.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
07/11/2002 | 1600 | 07/11/2002 | 1629 |
Subject: | SGP/EBBR/E26 - Measurements zero following logger restart |
DataStreams: | sgp15ebbrE26.a1, sgp15ebbrE26.b1, sgp30ebbrE26.a1, sgp30ebbrE26.b1, sgp5ebbrE26.a1 |
Description: | Most of the measurements were zero, which normally happens after a datalogger restart. |
Measurements: | sgp5ebbrE26.a1:
sgp15ebbrE26.b1:
sgp15ebbrE26.a1:
sgp30ebbrE26.b1:
sgp30ebbrE26.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
07/01/2002 | 0000 | 07/11/2002 | 1300 |
Subject: | SGP/EBBR/E26 - Multiplexer Problem |
DataStreams: | sgp15ebbrE26.a1, sgp15ebbrE26.b1, sgp30ebbrE26.a1, sgp30ebbrE26.b1, sgp5ebbrE26.a1 |
Description: | One of the multiplexers exhibited dropouts of the channels, beginning with the last channel at temperatures above about 30 C and moving backward through the channels as the temperature rose. High temperatures affected the switching speed of the multiplexer. This is the first time that this behavior has been documented in a Campbell Scientific multiplexer. The multiplexer had been in continuous field use for 10 years and had experienced probably more switching cycles than what is normally expected of the device in that period. The multiplexer was replaced to solve the problem. |
Measurements: | sgp5ebbrE26.a1:
sgp15ebbrE26.b1:
sgp15ebbrE26.a1:
sgp30ebbrE26.b1:
sgp30ebbrE26.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
11/01/2002 | 0845 | 11/06/2002 | 0130 |
Subject: | SGP/EBBR/E26 - Battery Voltage Low |
DataStreams: | sgp15ebbrE26.a1, sgp15ebbrE26.b1, sgp30ebbrE26.a1, sgp30ebbrE26.b1, sgp5ebbrE26.a1 |
Description: | When Battery Voltage drops below 10.5 volts, most measurements are suspect and some are often incorrect. The user will need to inspect the data carefully to determine the useability of the data. |
Measurements: | sgp5ebbrE26.a1:
sgp15ebbrE26.b1:
sgp15ebbrE26.a1:
sgp30ebbrE26.b1:
sgp30ebbrE26.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
12/04/2002 | 1015 | 01/10/2003 | 1600 |
Subject: | SGP/EBBR/E26 - AEM Hung |
DataStreams: | sgp15ebbrE26.a1, sgp15ebbrE26.b1, sgp30ebbrE26.a1, sgp30ebbrE26.b1, sgp5ebbrE26.a1 |
Description: | The AEM hung inbetween home positions during the period. The Bowen ratio, gradient measurements, sensible heat flux, and latent heat flux are incorrect. |
Measurements: | sgp5ebbrE26.a1:
sgp15ebbrE26.b1:
sgp15ebbrE26.a1:
sgp30ebbrE26.b1:
sgp30ebbrE26.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/10/2003 | 1900 | 01/10/2003 | 1904 |
Subject: | SGP/EBBR/E26 - Data zeros following logger restart |
DataStreams: | sgp15ebbrE26.a1, sgp15ebbrE26.b1, sgp30ebbrE26.a1, sgp30ebbrE26.b1, sgp5ebbrE26.a1 |
Description: | Most measurements were zero after restart of the CR10 datalogger, after a calibration changeout of the EBBR unit. |
Measurements: | sgp5ebbrE26.a1:
sgp15ebbrE26.b1:
sgp15ebbrE26.a1:
sgp30ebbrE26.b1:
sgp30ebbrE26.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/14/2003 | 1725 | 01/23/2003 | 1715 |
Subject: | SGP/EBBR/E26 - Left Air Temperature Incorrect |
DataStreams: | sgp15ebbrE26.a1, sgp15ebbrE26.b1, sgp30ebbrE26.a1, sgp30ebbrE26.b1, sgp5ebbrE26.a1 |
Description: | The left air temperature was incorrect during the period. Poor electronic connections may have caused this. |
Measurements: | sgp5ebbrE26.a1:
sgp15ebbrE26.b1:
sgp15ebbrE26.a1:
sgp30ebbrE26.b1:
sgp30ebbrE26.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/19/2003 | 1900 | 05/16/2003 | 1500 |
Subject: | SGP/EBBR/E26 - E26 EBBR Soil Heat Flow #1 Incorrect |
DataStreams: | sgp15ebbrE26.a1, sgp15ebbrE26.b1, sgp30ebbrE26.a1, sgp30ebbrE26.b1 |
Description: | Soil Heat Flow #1 was incorrect much of the time. The sensor was replaced. |
Measurements: | sgp15ebbrE26.b1:
sgp15ebbrE26.a1:
sgp30ebbrE26.b1:
sgp30ebbrE26.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/24/2003 | 1635 | 03/06/2003 | 1520 |
Subject: | SGP/EBBR/E26 -Right Air Temperature Incorrect |
DataStreams: | sgp15ebbrE26.a1, sgp15ebbrE26.b1, sgp30ebbrE26.a1, sgp30ebbrE26.b1, sgp5ebbrE26.a1 |
Description: | One of the Right Air Temperature connections was loose, producing incorrect data. |
Measurements: | sgp5ebbrE26.a1:
sgp15ebbrE26.b1:
sgp15ebbrE26.a1:
sgp30ebbrE26.b1:
sgp30ebbrE26.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/17/2003 | 1445 | 04/17/2003 | 1535 |
Subject: | SGP/EBBR/E26 - 6 Month Checks |
DataStreams: | sgp15ebbrE26.a1, sgp15ebbrE26.b1, sgp30ebbrE26.a1, sgp30ebbrE26.b1, sgp5ebbrE26.a1 |
Description: | Many measurements were incorrect while the AEM was positioned with both aspirators at the same height for comparison checks. |
Measurements: | sgp5ebbrE26.a1:
sgp15ebbrE26.b1:
sgp15ebbrE26.a1:
sgp30ebbrE26.b1:
sgp30ebbrE26.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
06/12/2003 | 0230 | 06/12/2003 | 0300 |
06/13/2003 | 1200 | 06/13/2003 | 1230 |
Subject: | SGP/EBBR/E26 - Soil Heat Flow #5 Large Positive |
DataStreams: | sgp15ebbrE26.a1, sgp15ebbrE26.b1, sgp30ebbrE26.a1, sgp30ebbrE26.b1 |
Description: | Soil Heat Flow #5 was large positive for these two periods, for an unknown reason. |
Measurements: | sgp15ebbrE26.b1:
sgp15ebbrE26.a1:
sgp30ebbrE26.b1:
sgp30ebbrE26.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
10/30/2003 | 1545 | 11/13/2003 | 1545 |
Subject: | SGP/EBBR/E26 - AEM Home Signals Incorrect, Surface Fluxes Incorrect |
DataStreams: | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1 |
Description: | During a preventative maintenance visit to perform the 6-month calibrations, the home15 and home30 outputs began reading the same as one another. A fuse replacement and lubrication of the AEM sprockets on 11/13 corrected the problem. During the interval specified, the home15, home30, and sensible and latent heat fluxes are incorrect. |
Measurements: | sgp15ebbrE26.b1:
sgp5ebbrE26.b1:
sgp30ebbrE26.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
10/30/2003 | 1535 | 10/30/2003 | 1615 |
Subject: | SGP/EBBR/E26 - 6 Month Checks |
DataStreams: | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1 |
Description: | Many measurements were incorrect while the AEM was positioned with both aspirators at the same height for comparison checks. |
Measurements: | sgp15ebbrE26.b1:
sgp5ebbrE26.b1:
sgp30ebbrE26.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
10/13/2003 | 0000 | 09/29/2004 | 1845 |
Subject: | SGP/EBBR/E26 - Spark Gap Bad, Pressure Incorrect |
DataStreams: | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1 |
Description: | In a trip to E26, I found that a bad spark gap through which the barometer was powered was causing pressure measurements to be incorrect. The pressure readings oscillated with the voltage of the EBBR battery. During daytime the voltage and thus the pressure would increase and vice versa during dark hours. Apparently only the positive side of the power supply was properly connected through the spark gap and thus the voltage received by the pressure sensor was lower than required to power it properly. Under this condition the perssure measurement varies with voltage level. The pressure measurements therefore had a diurnal signature and usually were incorrect. The decreased pressure during most times would cause latent heat flux to be slightly overestimated and sensible heat flux to be slightly underestimated. |
Measurements: | sgp15ebbrE26.b1:
sgp5ebbrE26.b1:
sgp30ebbrE26.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
12/12/2003 | 1935 | 12/14/2003 | 1615 |
Subject: | SGP/EBBR/E26 - Wind Speed Sensor Frozen By Ice Storm |
DataStreams: | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.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: | sgp15ebbrE26.b1:
sgp5ebbrE26.b1:
sgp30ebbrE26.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
12/12/2003 | 2140 | 12/14/2003 | 1530 |
Subject: | SGP/EBBR/E26 - Wind Direction Sensor Frozen By Ice Storm |
DataStreams: | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.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: | sgp15ebbrE26.b1:
sgp5ebbrE26.b1:
sgp30ebbrE26.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
02/02/2004 | 0200 | 02/02/2004 | 1620 |
Subject: | SGP/EBBR/E26 - Wind Speed Frozen Stopped By Ice |
DataStreams: | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.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: | sgp15ebbrE26.b1:
sgp5ebbrE26.b1:
sgp30ebbrE26.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
03/21/2003 | 1530 | 10/12/2003 | 2355 |
Subject: | SGP/EBBR/E26 - Spark Gap Bad, Pressure Incorrect |
DataStreams: | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.a1 |
Description: | In a trip to E26, I found that a bad spark gap through which the barometer was powered was causing pressure measurements to be incorrect. The pressure readings oscillated with the voltage of the EBBR battery. During daytime the voltage and thus the pressure would increase and vice versa during dark hours. Apparently only the positive side of the power supply was properly connected through the spark gap and thus the voltage received by the pressure sensor was lower than required to power it properly. Under this condition the perssure measurement varies with voltage level. The pressure measurements therefore had a diurnal signature and usually were incorrect. The decreased pressure during most times would cause latent heat flux to be slightly overestimated and sensible heat flux to be slightly underestimated. |
Measurements: | sgp5ebbrE26.a1:
sgp15ebbrE26.b1:
sgp30ebbrE26.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
10/13/2003 | 0000 | 07/22/2005 | 2359 |
Subject: | SGP/EBBR/E26 - metadata corrections |
DataStreams: | sgp15ebbrE26.b1, sgp30ebbrE26.b1, sgp5ebbrE26.b1 |
Description: | On 20050723, a series of metadata corrections and additions were completed. These metadata changes apply to all EBBR.E26 data collected by ARM back to the installation of the instrument in June 1992. 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: | sgp15ebbrE26.b1:
sgp5ebbrE26.b1:
sgp30ebbrE26.b1:
|