| DQR ID | Subject | Data Streams Affected |
|---|---|---|
| D011127.31 | SGP EBBR E20 - E20 EBBR Data Incorrect During 6 Month Checks | sgp15ebbrE20.a1, sgp15ebbrE20.b1, sgp30ebbrE20.a1, sgp30ebbrE20.b1, sgp5ebbrE20.a1 |
| D011218.13 | SGP EBBR E20 - E20 EBBR Battery Voltage Low, Data Incorrect | sgp15ebbrE20.a1, sgp15ebbrE20.b1, sgp30ebbrE20.a1, sgp30ebbrE20.b1 |
| D011218.14 | SGP/EBBR/E20 - Reprocess: Soil Temperature #3 Incorrect | sgp15ebbrE20.a1, sgp15ebbrE20.b1, sgp30ebbrE20.a1, sgp30ebbrE20.b1 |
| D020717.40 | SGP/EBBR/E20 - AEM Hung | sgp15ebbrE20.a1, sgp15ebbrE20.b1, sgp30ebbrE20.a1, sgp30ebbrE20.b1, sgp5ebbrE20.a1 |
| D020717.42 | SGP/EBBR/E20 - Battery Voltage Low | sgp15ebbrE20.a1, sgp15ebbrE20.b1, sgp30ebbrE20.a1, sgp30ebbrE20.b1, sgp5ebbrE20.00, sgp5ebbrE20.a1 |
| D020717.43 | SGP/EBBR/E20 - Pressure Almost Constant | sgp30ebbrE20.a1, sgp30ebbrE20.b1, sgp5ebbrE20.a1 |
| D020717.45 | SGP/EBBR/E20 - Reprocess: Soil Heat Flow #3 Incorrect During Sensor Changeout | sgp30ebbrE20.a1, sgp30ebbrE20.b1 |
| D020717.46 | SGP/EBBR/E20 - Reprocess: Soil Heat Flow #2 Has a Negative Offset | sgp30ebbrE20.a1, sgp30ebbrE20.b1 |
| D020717.47 | SGP/EBBR/E20 - Reprocess: Soil Heat Flow #4 Incorrect | sgp30ebbrE20.a1, sgp30ebbrE20.b1 |
| D020717.48 | SGP/EBBR/E20 - Measurements Zero | sgp15ebbrE20.a1, sgp15ebbrE20.b1, sgp30ebbrE20.a1, sgp30ebbrE20.b1, sgp5ebbrE20.00, sgp5ebbrE20.a1 |
| D020717.49 | SGP/EBBR/E20 - Reprocess: Soil Temperature #3 Incorrect | sgp30ebbrE20.a1, sgp30ebbrE20.b1 |
| D020717.50 | SGP/EBBR/E20 - Measurements Incorrect During Sensor Changeout | sgp30ebbrE20.a1, sgp30ebbrE20.b1 |
| D020717.51 | SGP/EBBR/E20 - Measurements Incorrect | sgp15ebbrE20.a1, sgp15ebbrE20.b1, sgp30ebbrE20.a1, sgp30ebbrE20.b1, sgp5ebbrE20.00, sgp5ebbrE20.a1 |
| D020726.1 | SGP/EBBR/E20 - Reprocess: Soil Heat Flow #2 and #4 incorrect | sgp30ebbrE20.a1, sgp30ebbrE20.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 |
| D050719.13 | SGP/EBBR/E20 - Improved EBBR CR10 Program | sgp30ebbrE20.b1 |
| Start Date | Start Time | End Date | End Time |
|---|---|---|---|
| 04/04/2001 | 1700 | 04/04/2001 | 1736 |
| 10/17/2001 | 1500 | 10/17/2001 | 1601 |
| Subject: | SGP EBBR E20 - E20 EBBR Data Incorrect During 6 Month Checks |
| DataStreams: | sgp15ebbrE20.a1, sgp15ebbrE20.b1, sgp30ebbrE20.a1, sgp30ebbrE20.b1, sgp5ebbrE20.a1 |
| Description: | The data was incorrect during the 6 month checks. |
| Measurements: | sgp30ebbrE20.b1:
sgp5ebbrE20.a1:
sgp15ebbrE20.b1:
sgp30ebbrE20.a1:
sgp15ebbrE20.a1:
|
| Start Date | Start Time | End Date | End Time |
|---|---|---|---|
| 04/02/2001 | 1245 | 04/02/2001 | 1701 |
| 04/03/2001 | 0215 | 04/03/2001 | 1501 |
| 04/06/2001 | 1115 | 04/06/2001 | 1501 |
| 04/07/2001 | 0345 | 04/07/2001 | 1401 |
| 04/23/2001 | 1045 | 04/23/2001 | 1331 |
| Subject: | SGP EBBR E20 - E20 EBBR Battery Voltage Low, Data Incorrect |
| DataStreams: | sgp15ebbrE20.a1, sgp15ebbrE20.b1, sgp30ebbrE20.a1, sgp30ebbrE20.b1 |
| Description: | The indicated data was incorrect because the battery voltage was low. |
| Measurements: | sgp30ebbrE20.b1:
sgp15ebbrE20.b1:
sgp30ebbrE20.a1:
sgp15ebbrE20.a1:
|
| Start Date | Start Time | End Date | End Time |
|---|---|---|---|
| 04/15/2001 | 1500 | 10/17/2001 | 0201 |
| Subject: | SGP/EBBR/E20 - Reprocess: Soil Temperature #3 Incorrect |
| DataStreams: | sgp15ebbrE20.a1, sgp15ebbrE20.b1, sgp30ebbrE20.a1, sgp30ebbrE20.b1 |
| Description: | During the indicated period, TS #3 was large negative or positive or offscale. Average soil heat flow, sensible heat flux, and latent heat flux were incorrect when TS #3 was incorrect. Inspect the 15 and 30 minute TS #3 data to determine the times of incorrect data. |
| Measurements: | sgp30ebbrE20.b1:
sgp15ebbrE20.b1:
sgp30ebbrE20.a1:
sgp15ebbrE20.a1:
|
| Start Date | Start Time | End Date | End Time |
|---|---|---|---|
| 11/28/2001 | 2045 | 01/23/2002 | 1801 |
| Subject: | SGP/EBBR/E20 - AEM Hung |
| DataStreams: | sgp15ebbrE20.a1, sgp15ebbrE20.b1, sgp30ebbrE20.a1, sgp30ebbrE20.b1, sgp5ebbrE20.a1 |
| Description: | The automatic exchange mechanism frequently hung in one position. The home signals and automated qc in the netcdf data files indicate when this occurred. Bowen ratio, sensible heat flux, and latent heat flux are incorrect for this condition. |
| Measurements: | sgp30ebbrE20.b1:
sgp15ebbrE20.b1:
sgp5ebbrE20.a1:
sgp30ebbrE20.a1:
sgp15ebbrE20.a1:
|
| Start Date | Start Time | End Date | End Time |
|---|---|---|---|
| 11/28/2001 | 0045 | 11/28/2001 | 2031 |
| 02/06/2002 | 2130 | 02/07/2002 | 0331 |
| Subject: | SGP/EBBR/E20 - Battery Voltage Low |
| DataStreams: | sgp15ebbrE20.a1, sgp15ebbrE20.b1, sgp30ebbrE20.a1, sgp30ebbrE20.b1, sgp5ebbrE20.00, sgp5ebbrE20.a1 |
| Description: | When the battery voltage is below 10.5 volts, most of the measurements are suspect. |
| Measurements: | sgp30ebbrE20.b1:
sgp5ebbrE20.a1:
sgp15ebbrE20.b1:
sgp5ebbrE20.00:
sgp30ebbrE20.a1:
sgp15ebbrE20.a1:
|
| Start Date | Start Time | End Date | End Time |
|---|---|---|---|
| 11/14/2001 | 1605 | 11/28/2001 | 2031 |
| Subject: | SGP/EBBR/E20 - Pressure Almost Constant |
| DataStreams: | sgp30ebbrE20.a1, sgp30ebbrE20.b1, sgp5ebbrE20.a1 |
| Description: | During the indicated period the pressure went to an almost constant 102 to 105 kPa. This occurred after the replacement of another sensor. The incorrect pressure values affect the sensible and latent heat flux calculations. |
| Measurements: | sgp30ebbrE20.b1:
sgp5ebbrE20.a1:
sgp30ebbrE20.a1:
|
| Start Date | Start Time | End Date | End Time |
|---|---|---|---|
| 12/12/2001 | 1915 | 12/12/2001 | 2031 |
| Subject: | SGP/EBBR/E20 - Reprocess: Soil Heat Flow #3 Incorrect During Sensor Changeout |
| DataStreams: | sgp30ebbrE20.a1, sgp30ebbrE20.b1 |
| Description: | Soil heat flow #3 measurements were incorrect during it's replacement.
Average soil heat flow, sensible heat flux, and latent heat flux were affected; these can
be recalculated using the remaining good sets of soil sensors as follows:
ave_shf = (g1 + g5)/2
e = -(q + ave_shf)/(1 + bowen)
h = -(q + e + ave_shf)
Note: during the time period referenced here, soil heat flow #4 and #2 were also
incorrect. This quality information is documented in D020717.46, D020717.47 and
D020726.1. |
| Measurements: | sgp30ebbrE20.b1:
sgp30ebbrE20.a1:
|
| Start Date | Start Time | End Date | End Time |
|---|---|---|---|
| 12/04/2001 | 0000 | 12/12/2001 | 1914 |
| 01/12/2002 | 0315 | 01/13/2002 | 2131 |
| 01/17/2002 | 0915 | 01/21/2002 | 0901 |
| 02/09/2002 | 0115 | 02/12/2002 | 0731 |
| 02/20/2002 | 1645 | 02/20/2002 | 1831 |
| Subject: | SGP/EBBR/E20 - Reprocess: Soil Heat Flow #2 Has a Negative Offset |
| DataStreams: | sgp30ebbrE20.a1, sgp30ebbrE20.b1 |
| Description: | Soil heat flow #2 measurements had a negative offset. Negative values were too small and negative values occurred when positive values should have. This can occur when there is a poor wire connection or a J-panel over-voltage protection device has failed. Average soil heat flow, sensible heat flux, and latent heat flux were affected; these can be recalculated using the remaining good sets of soil sensors as follows: ave_shf = (g1 + g3 + g4 + g5)/4 e = -(q + ave_shf)/(1 + bowen) h = -(q + e + ave_shf) |
| Measurements: | sgp30ebbrE20.b1:
sgp30ebbrE20.a1:
|
| Start Date | Start Time | End Date | End Time |
|---|---|---|---|
| 12/24/2001 | 0532 | 12/27/2001 | 1901 |
| Subject: | SGP/EBBR/E20 - Reprocess: Soil Heat Flow #4 Incorrect |
| DataStreams: | sgp30ebbrE20.a1, sgp30ebbrE20.b1 |
| Description: | Soil heat flow #4 was incorrect because it's wires were loose from the connection terminals. Average soil heat flow, sensible heat flux, and latent heat flux were affected; these can be recalculated using the remaining good sets of soil sensors as follows: ave_shf = (g1 + g2 + g3 + g5)/4 e = -(q + ave_shf)/(1 + bowen) h = -(q + e + ave_shf) |
| Measurements: | sgp30ebbrE20.b1:
sgp30ebbrE20.a1:
|
| Start Date | Start Time | End Date | End Time |
|---|---|---|---|
| 11/14/2001 | 1600 | 11/14/2001 | 1601 |
| 11/27/2001 | 1800 | 11/27/2001 | 1801 |
| 05/15/2002 | 1700 | 05/15/2002 | 1701 |
| 05/29/2002 | 1830 | 05/29/2002 | 1901 |
| Subject: | SGP/EBBR/E20 - Measurements Zero |
| DataStreams: | sgp15ebbrE20.a1, sgp15ebbrE20.b1, sgp30ebbrE20.a1, sgp30ebbrE20.b1, sgp5ebbrE20.00, sgp5ebbrE20.a1 |
| Description: | Most measurements were zero during the indicated periods. This often happens for the first reported data time after a CR10 datalogger restart. |
| Measurements: | sgp30ebbrE20.b1:
sgp5ebbrE20.a1:
sgp15ebbrE20.b1:
sgp5ebbrE20.00:
sgp30ebbrE20.a1:
sgp15ebbrE20.a1:
|
| Start Date | Start Time | End Date | End Time |
|---|---|---|---|
| 02/22/2002 | 2015 | 02/22/2002 | 2101 |
| 02/23/2002 | 1745 | 02/23/2002 | 1801 |
| 02/24/2002 | 0045 | 02/25/2002 | 0201 |
| 03/05/2002 | 2015 | 03/06/2002 | 0201 |
| 03/06/2002 | 1915 | 03/07/2002 | 1901 |
| Subject: | SGP/EBBR/E20 - Reprocess: Soil Temperature #3 Incorrect |
| DataStreams: | sgp30ebbrE20.a1, sgp30ebbrE20.b1 |
| Description: | Soil temperature 3 was incorrect during the indicated periods. Average soil heat flow, sensible heat flux, and latent heat flux were affected; these can be recalculated using the remaining good sets of soil sensors as follows: ave_shf = (g1 + g2 + g4 + g5)/4 e = -(q + ave_shf)/(1 + bowen) h = -(q + e + ave_shf) |
| Measurements: | sgp30ebbrE20.b1:
sgp30ebbrE20.a1:
|
| Start Date | Start Time | End Date | End Time |
|---|---|---|---|
| 02/20/2002 | 1745 | 02/20/2002 | 1901 |
| Subject: | SGP/EBBR/E20 - Measurements Incorrect During Sensor Changeout |
| DataStreams: | sgp30ebbrE20.a1, sgp30ebbrE20.b1 |
| Description: | The replacement of soil heat flow 2 caused the loss of initial soil temperature values used in the calculation of CES, G, C, ave_shf, bowen, e, and h. |
| Measurements: | sgp30ebbrE20.b1:
sgp30ebbrE20.a1:
|
| Start Date | Start Time | End Date | End Time |
|---|---|---|---|
| 12/27/2001 | 1845 | 12/27/2001 | 1901 |
| 05/15/2002 | 1715 | 05/15/2002 | 1731 |
| Subject: | SGP/EBBR/E20 - Measurements Incorrect |
| DataStreams: | sgp15ebbrE20.a1, sgp15ebbrE20.b1, sgp30ebbrE20.a1, sgp30ebbrE20.b1, sgp5ebbrE20.00, sgp5ebbrE20.a1 |
| Description: | Many measurements were incorrect because of the lack of an initial 15 minute value to use for gradient or soil change of energy storage calculations. |
| Measurements: | sgp30ebbrE20.b1:
sgp5ebbrE20.a1:
sgp15ebbrE20.b1:
sgp5ebbrE20.00:
sgp30ebbrE20.a1:
sgp15ebbrE20.a1:
|
| Start Date | Start Time | End Date | End Time |
|---|---|---|---|
| 12/12/2001 | 2032 | 12/24/2001 | 0531 |
| Subject: | SGP/EBBR/E20 - Reprocess: Soil Heat Flow #2 and #4 incorrect |
| DataStreams: | sgp30ebbrE20.a1, sgp30ebbrE20.b1 |
| Description: | Soil heat flow #2 measurements had a negative offset. Negative values were too small and
negative values occurred when positive values should have. This can occur when there is
a poor wire connection or a J-panel over-voltage protection device has failed.
Soil heat flow #4 was incorrect because it's wires were loose from the connection
terminals.
Average soil heat flow, sensible heat flux, and latent heat flux were affected;
these can be recalculated using the remaining good sets of soil sensors as follows:
ave_shf = (g1 + g3 + g5)/3
e = -(q + ave_shf)/(1 + bowen)
h = -(q + e + ave_shf) |
| Measurements: | sgp30ebbrE20.b1:
sgp30ebbrE20.a1:
|
| 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:
sgp30ebbrE2.b1:
sgp30ebbrE22.b1:
sgp30ebbrE20.b1:
sgp30ebbrE15.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:
|