DQR ID | Subject | Data Streams Affected |
---|---|---|
D041015.2 | SGP/PGS/C1 - Reprocessing User Notes | sgppgsC1.b1 |
D041026.1 | SGP/CO2FLX/C1 - Reprocess: Units | sgp30co2flx25mC1.b1, sgp30co2flx4mC1.b1, sgp30co2flx60mC1.b1 |
D050316.1 | SGP/CO2FLX/C1 - Reprocessed: User Notes | sgp30co2flx4mmetC1.b1 |
D051116.2 | SGP/CO2FLX/C1 - downwelling longwave hemispheric irradiance incorrect | sgp30co2flx4mmetC1.b1 |
D051116.3 | SGP/CO2FLX/C1 - Soil Temperature measurements | sgp30co2flx4mmetC1.b1 |
D051118.2 | SGP/PGS/C1 - Suspicious 2m data | sgppgsC1.b1 |
D051118.4 | SGP/PGS/C1 - Updated files | sgppgsC1.b1 |
D070416.4 | SGP/CO2FLX/C1 - downwelling longwave hemispheric irradiance incorrect | sgp30co2flx4mmetC1.b1 |
D071011.2 | SGP/CO2FLX/C1 - Reprocess: 4m instruments height | sgp30co2flx4mC1.b1 |
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/11/2001 | 1156 | 08/31/2004 | 2359 |
Subject: | SGP/PGS/C1 - Reprocessing User Notes |
DataStreams: | sgppgsC1.b1 |
Description: | Precise Gas System (pgs) daily b1 files should have a dimension of 480, corresponding to a measurement every 3 minutes. Previously submitted files had a dimension of 481, the last time step of each individual file being mistakenly repeated. |
Measurements: | sgppgsC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
12/18/2002 | 0000 | 10/12/2004 | 2359 |
Subject: | SGP/CO2FLX/C1 - Reprocess: Units |
DataStreams: | sgp30co2flx25mC1.b1, sgp30co2flx4mC1.b1, sgp30co2flx60mC1.b1 |
Description: | Mean CO2 density units are incorrectly labeled as umol m-3. Units should be labeled as mmol m-3. |
Measurements: | sgp30co2flx60mC1.b1:
sgp30co2flx4mC1.b1:
sgp30co2flx25mC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
12/18/2002 | 0000 | 03/15/2005 | 2359 |
Subject: | SGP/CO2FLX/C1 - Reprocessed: User Notes |
DataStreams: | sgp30co2flx4mmetC1.b1 |
Description: | Replacement of LI-200 sensor (total downwelling shortwave radiation, variable r_tot) by a new LI-190 sensor (upwelling photosynthetic photon flux density, variable ppfd_up). The new LI-190 sensor was: - installed on December 9, 2004. - being tested from December 9, 2004 to December 22, 2004. - operational after December 22, 2004. Consequently: 1. variable "r_tot" is filled with missing values (qc_r_tot = 1) after December 9, 2004, 2. variable "ppfd_up" is filled with missing values (qc_ppfd_up = 1) prior December 22, 2004. |
Measurements: | sgp30co2flx4mmetC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/28/2004 | 1900 | 11/16/2005 | 0000 |
Subject: | SGP/CO2FLX/C1 - downwelling longwave hemispheric irradiance incorrect |
DataStreams: | sgp30co2flx4mmetC1.b1 |
Description: | A problem was identified with the downwelling longwave hemispheric irradiance (variable "r_down_long_hemisp") calibration of our Kipp & Zonen CNR1 radiometer. The offset of the instrument is believed to be incorrect over the specified time frame, and a correction of the problem is underway. |
Measurements: | sgp30co2flx4mmetC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
12/18/2002 | 0000 | 11/16/2005 | 0000 |
Subject: | SGP/CO2FLX/C1 - Soil Temperature measurements |
DataStreams: | sgp30co2flx4mmetC1.b1 |
Description: | Current data quality check (qc) procedure does not catch spikes in soil temperature measurements. A new qc procedure is being tested and will improve the current procedure. |
Measurements: | sgp30co2flx4mmetC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
07/22/2004 | 0000 | 08/19/2005 | 0100 |
Subject: | SGP/PGS/C1 - Suspicious 2m data |
DataStreams: | sgppgsC1.b1 |
Description: | KNF pump for 2m height (channel 1) started to leak on July 22, 2004 and sampled air was consequently "contaminated" by indoor air. The pump was replaced on August 19, 2005. |
Measurements: | sgppgsC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/11/2001 | 1156 | 10/31/2005 | 2359 |
Subject: | SGP/PGS/C1 - Updated files |
DataStreams: | sgppgsC1.b1 |
Description: | Dew point temperature (dpt) sensor (Vaisala DMT 142) was added to the system on May 24, 2005 to assess water trapping system efficiency. Consequently, variable "dpt" is filled with missing values (-999.99) prior measurements start date (May 24, 2005). |
Measurements: | sgppgsC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/28/2004 | 0000 | 04/02/2007 | 1930 |
Subject: | SGP/CO2FLX/C1 - downwelling longwave hemispheric irradiance incorrect |
DataStreams: | sgp30co2flx4mmetC1.b1 |
Description: | Downwelling longwave radiation measurements (variable "r_down_long_hemisp") are bad due to a wiring issue. Users should not use the downwelling longwave hemispheric irradiance during this period. The downwelling shortwave and longwave radiation at CF is also available from the Broadband Radiometer Station (BRS). |
Measurements: | sgp30co2flx4mmetC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
12/17/2003 | 0000 | 10/11/2007 | 0000 |
Subject: | SGP/CO2FLX/C1 - Reprocess: 4m instruments height |
DataStreams: | sgp30co2flx4mC1.b1 |
Description: | The height of the 4m instruments is 4.8 m and not 4.65 m as shown in b1 datastream |
Measurements: | sgp30co2flx4mC1.b1:
|