DQR ID | Subject | Data Streams Affected |
---|---|---|
D040127.5 | SGP/ECOR/E10 - Timestamp problems and intermittent data gaps | sgp30ecorE10.b1, sgpecorE10.00 |
D040707.1 | SGP/ECOR/E6 - Sonic Sensor failure | sgp30ecorE6.b1, sgpecorE6.00 |
D040720.1 | SGP/ECOR/E10 - Sensor failure | sgp30ecorE10.b1, sgpecorE10.00 |
D041025.3 | SGP/ECOR/E10 - Sensor failure | sgp30ecorE10.b1, sgpecorE10.00 |
D041202.1 | SGP/ECOR/E6 - Reprocess: Incorrect wind direction | sgp30ecorE6.b1 |
D050222.1 | SGP/ECOR/E6 - Reprocess: Incorrectly flagged (marked as "bad") H2O/CO2 data | sgp30ecorE6.b1 |
D050413.5 | SGP/ECOR/E10 - Reprocess: Incorrect H2O, CO2 | sgp30ecorE10.b1, sgpecorE10.00 |
D050421.1 | SGP/ECOR/E10 - Reprocess: Incorrectly flagged (marked as "bad") H2O/CO2 data | sgp30ecorE10.b1 |
D050524.1 | SGP/ECOR/E6 - Missing data | sgp30ecorE6.b1 |
D050524.3 | SGP/ECOR/E6 - Sonic Sensor failure | sgp30ecorE6.b1 |
D050912.5 | SGP/ECOR/E6 - Reprocess: Time Was 7 Hours Slow | sgp30ecorE6.b1 |
D051024.3 | SGP/ECOR/E10 - Missing data | sgp30ecorE10.b1 |
D051031.5 | SGP/ECOR/E21 - Missing data | sgp30ecorE21.b1 |
D051101.10 | SGP/ECOR/E6 - CO2 and H2O Fluxes and Means Incorrect | sgp30ecorE6.b1 |
D060531.3 | SGP/ECOR/E10 - Reprocess: Wind Direction Incorrect | sgp30ecorE10.b1 |
D060619.2 | SGP/ECOR/E10 - LI-7500 Pressure and Temperature missing | sgp30ecorE10.b1 |
D060620.1 | SGP/ECOR/E21 - CO2 and Latent Heat Fluxes Incorrect | sgp30ecorE21.b1 |
D070402.1 | SGP/ECOR/E21 - Intermittent incorrect flux measurements | sgp30ecorE21.b1 |
D070509.1 | SGP/ECOR/E10 - CO2 and Latent Heat Fluxes Incorrect | sgp30ecorE10.b1 |
D080526.1 | SGP/ECOR/E10 - Incorrect CO2 fluxes | sgp30ecorE10.b1 |
D090122.1 | SGP/ECOR/E21 - Reprocess: 5 hour time offset | sgp30ecorE21.b1 |
D110513.10 | SGP/ECOR/E21 - TimeCheck Error | sgp30ecorE21.b1 |
D110830.4 | SGP/ECOR/E10 - Pressure and Temperature Missing | sgp30ecorE10.b1 |
D120305.2 | SGP/ECOR/E38 - Cable failure | sgp30ecorE38.b1 |
Start Date | Start Time | End Date | End Time |
---|---|---|---|
12/03/2003 | 2200 | 12/05/2003 | 2030 |
Subject: | SGP/ECOR/E10 - Timestamp problems and intermittent data gaps |
DataStreams: | sgp30ecorE10.b1, sgpecorE10.00 |
Description: | The raw files produced by the instrument contained bad (uncorrectable) data. Specifically the date of the data in the file is given a time that is ahead of the actual time the data was genertaed. This was caught because the date in the file was ahead of the system time of the server processing the raw file. The mentor indicated all such files were compeltely bad and unrecoverable so all files that failed to be ingested were not shipped to the archive, thus producing holes in the raw and processed datastreams. Because the problem was discovered by comparing to system time at time of processing all files between these dates should be consider suspect. Therefore the files that are on the system over these three days should be used cautiously |
Measurements: | sgpecorE10.00:
sgp30ecorE10.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
07/05/2004 | 2230 | 08/23/2004 | 1200 |
Subject: | SGP/ECOR/E6 - Sonic Sensor failure |
DataStreams: | sgp30ecorE6.b1, sgpecorE6.00 |
Description: | Due to sonic sensor failure, humidity, CO2 concentration, latent heat flux, and CO2 flux data are incorrect. |
Measurements: | sgpecorE6.00:
sgp30ecorE6.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
07/14/2004 | 0100 | 08/13/2004 | 1800 |
Subject: | SGP/ECOR/E10 - Sensor failure |
DataStreams: | sgp30ecorE10.b1, sgpecorE10.00 |
Description: | Due to LI-7500 (H2O/CO2 infrared gas analyzer) sensor failure all humidity and CO2 data are incorrect for the period of Jul. 14, 2004 01:00 to Aug. 13, 2004 18:00. |
Measurements: | sgpecorE10.00:
sgp30ecorE10.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
10/22/2004 | 1830 | 12/14/2004 | 2200 |
Subject: | SGP/ECOR/E10 - Sensor failure |
DataStreams: | sgp30ecorE10.b1, sgpecorE10.00 |
Description: | Due to sensor failure all the parameters measured by the Infrared Gas Analyzer (water vapor density, CO2 concentration, fluxes of latent heat and CO2, etc.) are incorrect for the period of 18:30 Oct. 22, 2004 to 22:00 Dec. 14, 2004. The data is irrevocably lost. |
Measurements: | sgpecorE10.00:
sgp30ecorE10.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
08/26/2004 | 1530 | 12/16/2004 | 1630 |
Subject: | SGP/ECOR/E6 - Reprocess: Incorrect wind direction |
DataStreams: | sgp30ecorE6.b1 |
Description: | The sonic anemometer was mounted 90 degrees off during August 26 Corrective Maintenance visit; the wind direction was reported 90 degrees off for the period of August 26, 2004, 15:30 to December 16, 2004, 16:30. |
Measurements: | sgp30ecorE6.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
06/14/2004 | 0000 | 06/14/2004 | 0030 |
Subject: | SGP/ECOR/E6 - Reprocess: Incorrectly flagged (marked as "bad") H2O/CO2 data |
DataStreams: | sgp30ecorE6.b1 |
Description: | Due to system clock instability on ECOR computers their system time is adjusted approximately once per hour; sometimes this adjustment leads to backward time jumps over midnight, into the previous day. In this case all the data based on CO2/H2O measurements might be erroneously marked as bad. Below is a list of times when that might have happen. SITE YEAR MONTH DAY HOUR MINUTE 06 2004 06 14 00 00 |
Measurements: | sgp30ecorE6.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
12/14/2004 | 2230 | 01/11/2005 | 2200 |
Subject: | SGP/ECOR/E10 - Reprocess: Incorrect H2O, CO2 |
DataStreams: | sgp30ecorE10.b1, sgpecorE10.00 |
Description: | Due to failure of analog output circuitry in the Infrared Gas Analyzer (IRGA), CO2 and water vapor parameters measured by the IRGA (water vapor density, CO2 concentration, fluxes of latent heat and CO2) were incorrectly recorded in sonic raw data files for the period of 22:30 Dec. 14, 2004 to 22:00 Jan. 11, 2005. The data could be recovered from IRGA raw serial files (00 level). |
Measurements: | sgpecorE10.00:
sgp30ecorE10.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
12/10/2003 | 0000 | 02/04/2005 | 0030 |
Subject: | SGP/ECOR/E10 - Reprocess: Incorrectly flagged (marked as "bad") H2O/CO2 data |
DataStreams: | sgp30ecorE10.b1 |
Description: | Due to system clock instability on ECOR computers their system time is adjusted approximately once per hour; sometimes this adjustment leads to backward time jumps over midnight, into the previous day. In this case all the data based on CO2/H2O measurements might be erroneously marked as bad. |
Measurements: | sgp30ecorE10.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
08/23/2004 | 1230 | 08/26/2004 | 1530 |
01/05/2005 | 0330 | 01/13/2005 | 1600 |
Subject: | SGP/ECOR/E6 - Missing data |
DataStreams: | sgp30ecorE6.b1 |
Description: | Data are missing and unrecoverable. |
Measurements: | sgp30ecorE6.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
07/05/2004 | 2230 | 08/23/2004 | 1200 |
Subject: | SGP/ECOR/E6 - Sonic Sensor failure |
DataStreams: | sgp30ecorE6.b1 |
Description: | Due to sonic sensor failure, wind, temperature and sensible heat flux data are suspect. |
Measurements: | sgp30ecorE6.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
08/11/2005 | 0900 | 09/22/2005 | 1540 |
Subject: | SGP/ECOR/E6 - Reprocess: Time Was 7 Hours Slow |
DataStreams: | sgp30ecorE6.b1 |
Description: | When the site computer was changed on 8/11, the time was set 7 hours behind the correct time. This will be corrected by future reprocessing of the data. |
Measurements: | sgp30ecorE6.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
08/09/2005 | 1630 | 10/18/2005 | 2130 |
07/31/2006 | 0800 | 01/09/2007 | 2030 |
12/03/2003 | 2200 | 12/05/2003 | 2030 |
05/13/2005 | 1100 | 05/16/2005 | 1600 |
Subject: | SGP/ECOR/E10 - Missing data |
DataStreams: | sgp30ecorE10.b1 |
Description: | Data are missing and unrecoverable. |
Measurements: | sgp30ecorE10.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
09/20/2006 | 0430 | 09/27/2006 | 1830 |
02/22/2012 | 1900 | 02/27/2012 | 1830 |
01/18/2006 | 1500 | 01/26/2006 | 1800 |
05/05/2006 | 2330 | 05/11/2006 | 0400 |
06/01/2006 | 2130 | 06/06/2006 | 2030 |
09/07/2005 | 1630 | 09/15/2005 | 1530 |
06/05/2005 | 0330 | 06/08/2005 | 2100 |
07/23/2005 | 1700 | 07/27/2005 | 1930 |
08/09/2005 | 0100 | 08/16/2005 | 1930 |
Subject: | SGP/ECOR/E21 - Missing data |
DataStreams: | sgp30ecorE21.b1 |
Description: | Data are missing and unrecoverable. |
Measurements: | sgp30ecorE21.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
08/30/2005 | 1930 | 09/13/2005 | 0700 |
Subject: | SGP/ECOR/E6 - CO2 and H2O Fluxes and Means Incorrect |
DataStreams: | sgp30ecorE6.b1 |
Description: | The CO2 and H2O (lv_e) fluxes and means were incorrect during the period because the LI-7500 was not working. |
Measurements: | sgp30ecorE6.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
10/03/2003 | 1900 | 05/25/2006 | 1800 |
Subject: | SGP/ECOR/E10 - Reprocess: Wind Direction Incorrect |
DataStreams: | sgp30ecorE10.b1 |
Description: | It was discovered that the E10 ECOR boom is aligned 17 degrees to the west of true north. Therefore, all wind direction data for the stated period is 17 degrees too high. Subtract 17 degrees from the wind direction to give the correct direction. The E10 configuration file was modified to correct this problem. |
Measurements: | sgp30ecorE10.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
06/11/2006 | 0130 | 07/31/2006 | 0730 |
Subject: | SGP/ECOR/E10 - LI-7500 Pressure and Temperature missing |
DataStreams: | sgp30ecorE10.b1 |
Description: | The LI-7500 pressure and temperature were not recorded; the serial datastream was not being captured by the ECOR. |
Measurements: | sgp30ecorE10.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/13/2006 | 1230 | 04/25/2006 | 1500 |
Subject: | SGP/ECOR/E21 - CO2 and Latent Heat Fluxes Incorrect |
DataStreams: | sgp30ecorE21.b1 |
Description: | |
Measurements: | sgp30ecorE21.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
03/01/2007 | 0800 | 08/29/2007 | 1730 |
Subject: | SGP/ECOR/E21 - Intermittent incorrect flux measurements |
DataStreams: | sgp30ecorE21.b1 |
Description: | At various times during the period, the LI-7500 CO2/H2O serial and analog signals from the LI-7500 were missing, but usually not at the same time. When the CO2/H2O serial datastream was missing, the Pressure and Temperature were missing; this did not, in itself, result in incorrect fluxes, as default values for pressure and temperature are automatically used. Fluxes were incorrect when the CO2/H2O analog datastream was missing; these times are identified by the qc checks. |
Measurements: | sgp30ecorE21.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
05/02/2007 | 1530 | 05/07/2007 | 0200 |
Subject: | SGP/ECOR/E10 - CO2 and Latent Heat Fluxes Incorrect |
DataStreams: | sgp30ecorE10.b1 |
Description: | The CO2 and latent heat fluxes were incorrect because the sonic anemometer was not working properly. |
Measurements: | sgp30ecorE10.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
05/10/2008 | 1130 | 06/25/2008 | 1500 |
Subject: | SGP/ECOR/E10 - Incorrect CO2 fluxes |
DataStreams: | sgp30ecorE10.b1 |
Description: | The analog CO2 signal from the LI-7500 to the sonic anemometer became very noisy and incorrect CO2 fluxes resulted. Sonic anemometer was replaced. |
Measurements: | sgp30ecorE10.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/20/2009 | 2030 | 01/22/2009 | 1800 |
Subject: | SGP/ECOR/E21 - Reprocess: 5 hour time offset |
DataStreams: | sgp30ecorE21.b1 |
Description: | The system clock was mistakenly set to DST instead of GMT. All times are 5 hours behind. |
Measurements: | sgp30ecorE21.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
06/07/2010 | 0000 | 06/29/2010 | 2359 |
Subject: | SGP/ECOR/E21 - TimeCheck Error |
DataStreams: | sgp30ecorE21.b1 |
Description: | Starting on 2010-06-07 the E21 system clock started drifting until the problem was corrected on 2010-06-29, The maximum daily offset reported in the collection logs were: Jun 7 offset: -5.04 Jun 8 Offset: -267.449039 Jun 9 Offset: -541.038624 Jun 10 Offset: -814.469141 Jun 11 Offset: -1076.862114 Jun 12 Offset: -1350.330223 Jun 13 Offset: -1623.639335 Jun 14 Offset: -1897.047754 Jun 15 Offset: -2170.552312 Jun 16 Offset: -2422.130746 Jun 17 Offset: -2684.607495 Jun 18 - Jun 22 (unknown) Jun 23 Offset: -4204.730579 |
Measurements: | sgp30ecorE21.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
07/12/2011 | 2130 | 08/04/2011 | 1730 |
Subject: | SGP/ECOR/E10 - Pressure and Temperature Missing |
DataStreams: | sgp30ecorE10.b1 |
Description: | The pressure and temperature from the LI-7500 were missing. Sensible and latent heat flux were not affected. |
Measurements: | sgp30ecorE10.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
10/21/2011 | 2000 | 02/09/2012 | 1630 |
Subject: | SGP/ECOR/E38 - Cable failure |
DataStreams: | sgp30ecorE38.b1 |
Description: | CO2 flux (fc), latent heat flux (lv_e), mean CO2 Density (mean_c), and variance of variable c (var_c) were incorrect. Replacement of DAC cables 2/9 resolved the problem. |
Measurements: | sgp30ecorE38.b1:
|