| DQR ID | Subject | Affected Data Streams | Data Quality Metric |
|---|---|---|---|
| D101218.1 | TWP/QCRAD/C2 - Instrument grounding problem | twpqcrad1longC2.s1 | Incorrect |
| D120606.4 | TWP/QCRAD/C2 - Case and dome temperatures noisy or bad | twpqcrad1longC2.s2 | Suspect |
| D120607.2 | TWP/QCRAD/C2 - Direct normal reading too low | twpqcrad1longC2.c1 | Incorrect |
| D101026.1 | TWP/QCRAD/C1/C2/C3 - error in qc flags | twpqcrad1longC3.c1 | Note |
| D120607.1 | TWP/QCRAD/C2 - NIP cable bad | twpqcrad1longC2.c1 | Incorrect |
| D120607.3 | TWP/QCRAD/C2 - Tracker failure | twpqcrad1longC2.c2 | Incorrect |
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2009-05-04 | 00:00:00 | 2009-05-08 | 23:59:00 | Incorrect |
| 2009-05-21 | 18:55:00 | 2009-05-25 | 21:00:00 | Incorrect |
| 2009-04-23 | 00:00:00 | 2009-04-23 | 23:59:00 | Incorrect |
| 2009-05-15 | 00:00:00 | 2009-05-15 | 23:59:00 | Incorrect |
| Subject: | TWP/QCRAD/C2 - Instrument grounding problem |
|---|---|
| Affected Datastreams: | twpqcrad1longC2.s1 |
| Description | A grounding problem with the skyrad data logger (discussed in DQR D090605.2) created intermittent anomalous voltages and incorrect data. Days listed in this DQR are periods where bad data could be clearly identified; data from other days in this date range should be treated with caution. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2009-04-15 | 00:00:00 | 2009-06-01 | 00:00:00 | Suspect |
| 2001-05-17 | 00:00:00 | 2003-03-03 | 21:00:00 | Suspect |
| 2006-11-10 | 12:00:00 | 2006-11-26 | 23:00:00 | Suspect |
| Subject: | TWP/QCRAD/C2 - Case and dome temperatures noisy or bad |
|---|---|
| Affected Datastreams: | twpqcrad1longC2.s2 |
| Description | Upwelling and downwelling longwave case and dome temperatures are noisy or bad during this time. Not all corrections and tests can be applied to LW fluxes as a result. No instrument DQRs exist describing this problem. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2008-03-02 | 22:30:00 | 2008-03-10 | 21:30:00 | Incorrect |
| Subject: | TWP/QCRAD/C2 - Direct normal reading too low |
|---|---|
| Affected Datastreams: | twpqcrad1longC2.c1 |
| Description | Direct normal irradiance data is bad. Described in instrument DQR D080313.2. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2002-03-12 | 00:00:00 | 2010-06-07 | 23:59:00 | Note |
| Subject: | TWP/QCRAD/C1/C2/C3 - error in qc flags |
|---|---|
| Affected Datastreams: | twpqcrad1longC3.c1 |
| Description | In the qc_down_short_diffuse_hemisp field, QC failures from the test indicated by bit_13, "data failed tracker off test", were set incorrectly as bit_9, "GSW2SumSW (93 > SZA > 75 and SumSW > 50; GSW/SumSW < 0.85 or GSW/SumSW > 1.15)". Solar tracker failures are correctly indicated in the aqc_down_short_diffuse_hemisp field. In the qc_short_direct_normal field, QC failures from the test indicated by bit_10, "data failed tracker off test", were set incorrectly as bit_9, "GSW2SumSW (93 > SZA > 75 and SumSW > 50; GSW/ SumSW < 0.85 or GSW/SumSW > 1.15)". Solar tracker failures are correctly indicated in the aqc_short_direct_normal field. This is a software problem in the VAP that impacts all dates for which a solar tracker failure occurred prior to 20100608 for each facility. The 20020312 start date was chosen because the DQR system can not link multiple start/end date/times with multiple facilities within the same report. As a result, the latest start date corresponding to C3 was chosen. The actual start dates for which this problem could have occurred for each facility are as follows: C1: 19961010 C2: 19981029 C3: 20020312 Please note that if a solar tracker failure is not indicated by the aqc_down_short_diffuse_hemisp and/or aqc_short_direct_normal fields you can ignore this DQR. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2007-01-31 | 02:23:00 | 2007-02-10 | 00:55:00 | Incorrect |
| Subject: | TWP/QCRAD/C2 - NIP cable bad |
|---|---|
| Affected Datastreams: | twpqcrad1longC2.c1 |
| Description | Shortwave direct normal irradiance data are missing or incorrect due to instrument cable failure. Described in instrument DQR D070206.1. Note that fewer quality checks can be applied accurately to the BestEstimate data. |
| Measurements |
|
| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 2008-12-17 | 19:42:00 | 2008-12-21 | 22:15:00 | Incorrect |
| 2001-05-26 | 12:00:00 | 2001-06-18 | 04:00:00 | Incorrect |
| 2009-03-25 | 20:00:00 | 2009-05-18 | 04:42:00 | Incorrect |
| 1999-09-01 | 00:00:00 | 1999-11-01 | 00:00:00 | Incorrect |
| 2003-12-01 | 00:00:00 | 2004-01-01 | 00:00:00 | Incorrect |
| 2011-10-06 | 00:00:00 | 2011-12-31 | 00:00:00 | Incorrect |
| 2011-06-16 | 23:35:00 | 2011-08-15 | 01:30:00 | Incorrect |
| 2001-06-25 | 18:00:00 | 2001-08-16 | 04:00:00 | Incorrect |
| Subject: | TWP/QCRAD/C2 - Tracker failure |
|---|---|
| Affected Datastreams: | twpqcrad1longC2.c2 |
| Description | Tracker appears to be out of alignment or inoperative during these times. The short_direct_normal (NIP) and down_short_diffuse_hemisp (8-48) data appear to be bad and not recoverable. Several of these periods are documented in instrument DQRs: D110831.1, D090328.1, D081222.3, D040107.1, D011207.1, D011019.8 |
| Measurements |
|