| DQR ID | Subject | Affected Data Streams | Data Quality Metric |
|---|---|---|---|
| D110629.2 | SGP/SWATS/E13 - Failed sensor W 25cm | sgpswatsE13.b1 | Incorrect |
| D130725.2 | SGP/SURFSPECALB/C1 - Data processing problem | sgpsurfspecalb1mlawerC1.c1 | Note |
| D170329.13 | SGP/SWATS (All) - Similar Soil Temperature Trends At Soil Depths Below 15 cm; Exaggerated at E31-E38 | sgpswatsE15.b1 | Suspect |
| D121016.2 | SGP/ECOR/E14 - Missing data | sgp30ecorE14.b1 | Missing |
| D141121.2 | SGP/SURFSPECALB/C1 - Reprocessed and Corrected: Incorrect missing value resulted in incorrect data | sgpsurfspecalb1mlawerC1.c1 | Note |
| D141114.1 | SGP/SURFSPECALB/C1 - Reprocessed and Corrected: A gap in data files | sgpsurfspecalb1mlawerC1.c1 | Note |
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2011-06-23 | 21:00:00 | 2017-07-03 | 15:00:00 | Incorrect |
| Subject: | SGP/SWATS/E13 - Failed sensor W 25cm |
|---|---|
| Affected Datastreams: | sgpswatsE13.b1 |
| Description | After a lightning strike near the CF, the SWATS trise values were reporting near zero. The current channel in the CE8 module failed, so the wire was moved to the next channel and trise values returned to normal, except for the West 25cm sensor. The trise for this sensor remained at zero, and did not change after re-seating the connections. Likely sensor has failed. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2004-01-01 | 00:00:00 | 2013-01-26 | 00:00:00 | Note |
| Subject: | SGP/SURFSPECALB/C1 - Data processing problem |
|---|---|
| Affected Datastreams: | sgpsurfspecalb1mlawerC1.c1 |
| Description | An intermediate process, surfspecalb_transform, of the surfspecalb1mlawer VAP incorrectly treated its input datastream (intermediate datastream surfspecalbmfrsr.c0) as it had a bin alignment equal to the end of the bin, but it was actually the middle of the bin. The result was a shifting of the values with respect to time 10 seconds to the left. The impact on the primary measurement, spectral albedo, was considered to be less than the uncertainty of that measurement. The problem occurs for all measurements dimensioned by time. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 1996-02-05 | 00:00:00 | 2016-03-03 | 23:30:00 | Suspect |
| Subject: | SGP/SWATS (All) - Similar Soil Temperature Trends At Soil Depths Below 15 cm; Exaggerated at E31-E38 |
|---|---|
| Affected Datastreams: | sgpswatsE15.b1 |
| Description | All soil levels below 15cm show essentially the same magnitude of soil temperature change on a daily basis and at the same times as the 15cm level, with no delay at greater depths. This does not represent physical reality at these depths. Furthermore, this behavior began with the very first installation of the SWATS and has been seen in every SWATS system. However, the magnitude of this problem is much greater at extended facilities E31 through E38. Comparison of the SWATS with co-located SEBS or EBBR 5cm soil temperatures shows that the diurnal trend of soil temperature at 5cm is similar for the SWATS and the EBBR or SEBS, but usually exhibits a larger maximum and a lower minimum. The SWATS minimum also is reached less smoothly than the EBBR or SEBS. This is likely because the SEBS and EBBR soil temperature measurements are an integration from the surface to 5cm depth. The SWATS pattern is also seen, to a much more minor extent, in the trise, trise_ref, water content, soil water potential, and fractional water index measurements at 15cm and below; however, the variation in these measurements is well within the uncertainty of the measurements. It appears that the SWATS probe thermistor lead connections with the datalogger terminal strip were acting as thermocouples. Why the effect was so much greater at E31-38 is not clear, but it probably has something to do with how the lead connections to the datalogger were performed. This situation particularly affects the measurements during daytime hours, and corresponds with heating of the SWATS enclosure by the Sun. 5cm SWATS soil temperatures are very similar to co-located EBBR or SEBS 1-5 cm integrated temperatures at most extended facilities, and therefore appear to be valid (the solar heating/thermocouple effect may be swamped by the actual soil temperature diurnal change). 15cm SWATS soil temperatures may also be valid at extended facilities other than E31-38, as they show a larger diurnal variation than lower depths and about midway in magnitude between the 5cm and 25 cm measurements. Since it seems likely that the soil temperature measurements below 15cm were affected by the solar heating of the enclosure at all but E31-38, and at all depths below 5cm at E31-38, individual measurements of soil temperature at these depths during daylight hours, and daily averages of the same, can not be trusted on most (particularly sunny) days. The effect on cloudy days seems smaller. For further information see the SWATS technical report: https://www.arm.gov/publications/tech_reports/doe-sc-arm-tr-193.pdf |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2012-10-05 | 19:30:00 | 2012-10-09 | 18:00:00 | Missing |
| Subject: | SGP/ECOR/E14 - Missing data |
|---|---|
| Affected Datastreams: | sgp30ecorE14.b1 |
| Description | Data are missing and unrecoverable. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2004-01-01 | 00:00:00 | 2016-05-02 | 23:59:59 | Note |
| Subject: | SGP/SURFSPECALB/C1 - Reprocessed and Corrected: Incorrect missing value resulted in incorrect data |
|---|---|
| Affected Datastreams: | sgpsurfspecalb1mlawerC1.c1 |
| Description | DATA REPROCESSED and CORRECTED: hese data were reprocessed to fix the problems described below. One variable in an intermediate datastream (i.e. surfspecalb1mlawer.c0) to this VAP did not have a missing_value attribute defined. Variables without a missing_value used __FillValue as their missing value. The downstream VAP did not recognize those fill values as "bad" and used them in its processing messing up the logic and resulting in no clear days being found. Inability to access the DQR database resulted in a gap in data files for 20140218-20140419. The data were archived in August 2016. Please retrieve the reprocessed data for use in your analysis. You may find these data using the ARM Discovery tool at the following link: http://www.archive.arm.gov/discovery/#v/results/s/finst::surfspecalb/fsite::sgp/ffac::sgp.C1 ORIGINAL DQR CATEGORY: Red( Incorrect) REPROCESSED and CORRECTED DATA ARCHIVED:2016-08 REPROCESS IDENTIFICATION NUMBER: RID 1254 --------------------------------------------------- --- ORIGINAL DQR DESCRIPTION --- --------------------------------------------------- An update to the shared libraries negatively impacted the Value Added Product (VAP) because one variable in its intermediate datastream (i.e. surfspecalb1mlawer.c0) did not have a missing_value attribute defined. An update to the transformation library made in the spring was for variables without a missing_value to use __FillFalue as their missing value. In a typically VAP the use of fill values instead of missing would be immediately caught by processes that check the output files before shipping to the archive. However, this fill value was in an intermediate datastream that is not shipped to the archive, and is immediately removed after it is no longer needed. The downstream VAP did not recognize those fill values as "bad" and used them in its processing messing up the logic and resulting in no clear days being found. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2004-01-01 | 00:00:00 | 2016-05-02 | 23:59:59 | Note |
| Subject: | SGP/SURFSPECALB/C1 - Reprocessed and Corrected: A gap in data files |
|---|---|
| Affected Datastreams: | sgpsurfspecalb1mlawerC1.c1 |
| Description | DATA REPROCESSED and CORRECTED: These data were reprocessed to fix the problems described below. One variable in an intermediate datastream (i.e. surfspecalb1mlawer.c0) to this VAP did not have a missing_value attribute defined. Variables without a missing_value used __FillValue as their missing value. The downstream VAP did not recognize those fill values as "bad" and used them in its processing messing up the logic and resulting in no clear days being found. Inability to access the DQR database resulted in a gap in data files for 20140218-20140419. The data were archived in August 2016. Please retrieve the reprocessed data for use in your analysis. You may find these data using the ARM Discovery tool at the following link: http://www.archive.arm.gov/discovery/#v/results/s/finst::surfspecalb/fsite::sgp/ffac::sgp.C1 ORIGINAL DQR CATEGORY: black( Missing) REPROCESSED and CORRECTED DATA ARCHIVED:2016-08 REPROCESS IDENTIFICATION NUMBER: RID 1259 --------------------------------------------------- --- ORIGINAL DQR DESCRIPTION --- --------------------------------------------------- There is no data for the indicated period due to inability to access the DQR database. |
| Measurements |
|