DQR ID | Subject | Data Streams Affected |
---|---|---|
D021211.12 | NSA/GNDRAD/C1 - Noisy PIR Data | nsagndrad60sC1.a1, nsagndrad60sC1.b1 |
D021211.2 | NSA/GNDRAD/C1 - IRT instrument maintenance | nsagndrad60sC1.a1, nsagndrad60sC1.b1 |
D021211.6 | NSA/GNDRAD/C1 - IRT data noisy | nsagndrad60sC1.a1, nsagndrad60sC1.b1 |
D021212.1 | NSA/GNDRAD/C1 - Instrument Maintenance | nsagndrad60sC1.a1, nsagndrad60sC1.b1 |
D021212.10 | NSA/GNDRAD/C1 - Unreasonable PSP Data | nsagndrad60sC1.a1, nsagndrad60sC1.b1 |
D021212.2 | NSA/GNDRAD/C1 - PSP erroneously replaced by B&W | nsagndrad60sC1.a1, nsagndrad60sC1.b1 |
D021212.3 | NSA/GNDRAD/C1 - Instrument maintenance | nsagndrad60sC1.a1, nsagndrad60sC1.b1 |
D021212.4 | NSA/GNDRAD/C1 - Bad calibrations applied | nsagndrad60sC1.a1, nsagndrad60sC1.b1 |
D021212.6 | NSA/GNDRAD/C1 - Unexplained decrease in PSP and NET data values | nsagndrad60sC1.a1, nsagndrad60sC1.b1 |
D021212.7 | NSA/GNDRAD/C1 - Data corrupted by brief spike | nsagndrad60sC1.a1, nsagndrad60sC1.b1 |
D021212.8 | NSA/GNDRAD/C1 - Rad instruments shaded by shelter | nsagndrad60sC1.a1, nsagndrad60sC1.b1 |
D021212.9 | NSA/GNDRAD/C1 - PSP Data corrupted by brief spike | nsagndrad60sC1.a1, nsagndrad60sC1.b1 |
D030301.1 | NSA/GNDRAD/C1 - No power to IRT | nsagndrad60sC1.a1, nsagndrad60sC1.b1 |
D031216.1 | NSA/GNDRAD/C1 - IRT cable failure | nsagndrad60sC1.b1 |
D031216.2 | NSA/GNDRAD/C1 - IRT returned to vendor | nsagndrad60sC1.b1 |
D040208.1 | NSA/GNDRAD/C2 - Upwelling PIR measurement - spikes in thermopile signal | nsagndradC2.00, nsagndrad20sC2.a1, nsagndrad60sC2.b1 |
D040919.1 | NSA/GNDRAD/C1 - IRT power failure | nsagndrad60sC1.b1 |
D041013.3 | NSA/GNDRAD/C1 - Frosting/Condensation | nsagndradC1.00, nsagndrad20sC1.a1, nsagndrad60sC1.b1 |
D050121.4 | NSA/GNDRAD/C2 - Incorrect calibration coefficients applied to upwelling(Gndrad)PIR | nsagndradC2.00, nsagndrad60sC2.b1 |
D050629.1 | NSA/GNDRAD/C1/C2 - Upwelling Shortwave data flagged bad are good. | nsagndrad60sC1.b1, nsagndrad60sC2.b1 |
D050825.3 | NSA/GNDRAD/C1 - Power Disconnected Briefly | nsagndrad60sC1.b1 |
D060209.4 | NSA/GNDRAD/C1 - power outage affecting some GNDRAD sensors | nsagndradC1.00, nsagndrad20sC1.a0, nsagndrad60sC1.b1 |
D060630.39 | NSA/GNDRAD/C1 - Reprocess: Longwave Calibration error | nsagndrad60sC1.b1 |
D060630.40 | NSA/GNDRAD/C2 - Reprocess: Longwave Calibration error | nsagndrad60sC2.b1 |
D060824.1 | NSA/GNDRAD/C1 - Incorrect calibration coefficients | nsagndradC1.00, nsagndrad20sC1.a0, nsagndrad20sC1.a1, nsagndrad60sC1.b1 |
D071010.1 | NSA/GNDRAD/C1 - Preventive maintenance | nsagndrad20sC1.a0, nsagndrad60sC1.b1 |
D071018.2 | NSA/GNDRAD/C1 - Missing data | nsagndrad60sC1.b1 |
D071025.3 | NSA/GNDRAD/C1 - Reprocessed: Incorrect calibration coefficient | nsagndrad20sC1.a0, nsagndrad60sC1.b1 |
D080904.5 | NSA/GNDRAD/C1 - Upwelling PIR ventilator fan failure | nsagndrad20sC1.a0, nsagndrad60sC1.b1 |
D080919.1 | NSA/GNDRAD/C1 - Net radiometer removed | nsagndrad60sC1.a1, nsagndrad60sC1.b1 |
D090209.2 | NSA/GNDRAD/C1 - Reprocess: IRT insufficiently heated | nsagndrad60sC1.b1 |
D090209.3 | NSA/GNDRAD/C2 - Reprocess: IRT insufficiently heated | nsagndrad60sC2.b1 |
Start Date | Start Time | End Date | End Time |
---|---|---|---|
03/01/1999 | 0000 | 12/31/2000 | 2359 |
Subject: | NSA/GNDRAD/C1 - Noisy PIR Data |
DataStreams: | nsagndrad60sC1.a1, nsagndrad60sC1.b1 |
Description: | During the period referenced, the ground PIR was noisy in comparison to the the sky PIR data. (Note U021211.1 documents same problem for 9/1/98-2/28/99) The noise problem continued after the GNDRAD data logger was replaced in late September. Particularly strong examples of the noise can be seen in data from 11/10 - 11/19/99. The peak to peak noise reaches 12 W/m2. |
Measurements: | nsagndrad60sC1.b1:
nsagndrad60sC1.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
09/15/1999 | 1720 | 09/15/1999 | 2000 |
Subject: | NSA/GNDRAD/C1 - IRT instrument maintenance |
DataStreams: | nsagndrad60sC1.a1, nsagndrad60sC1.b1 |
Description: | IRT offline while instrument cable was being rebuilt. Data are bad. |
Measurements: | nsagndrad60sC1.b1:
nsagndrad60sC1.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
12/10/1999 | 0000 | 12/29/2000 | 1859 |
Subject: | NSA/GNDRAD/C1 - IRT data noisy |
DataStreams: | nsagndrad60sC1.a1, nsagndrad60sC1.b1 |
Description: | After re-installation of the IRT on 12/10/99, the data are noisy. Source of the noise is believed to be the heater connected directly to the IRT. Instrument was taken offline on 12/30/1999 and shipped back to PNNL for repair/testing. |
Measurements: | nsagndrad60sC1.b1:
nsagndrad60sC1.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
06/13/2001 | 2100 | 06/13/2001 | 2200 |
Subject: | NSA/GNDRAD/C1 - Instrument Maintenance |
DataStreams: | nsagndrad60sC1.a1, nsagndrad60sC1.b1 |
Description: | Tip tower was lowered for instrument maintenance. Data taken during this period are corrupt. |
Measurements: | nsagndrad60sC1.b1:
nsagndrad60sC1.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
03/03/1999 | 1200 | 03/03/1999 | 1515 |
Subject: | NSA/GNDRAD/C1 - Unreasonable PSP Data |
DataStreams: | nsagndrad60sC1.a1, nsagndrad60sC1.b1 |
Description: | During the darkness in the middle of this night, the PSP had a signal of 15 W/m2 over a three hour long period. Cause unknown. |
Measurements: | nsagndrad60sC1.b1:
nsagndrad60sC1.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
06/13/2001 | 2300 | 06/21/2001 | 1800 |
Subject: | NSA/GNDRAD/C1 - PSP erroneously replaced by B&W |
DataStreams: | nsagndrad60sC1.a1, nsagndrad60sC1.b1 |
Description: | The PSP was erroneously replaced with a B&W on 6/13 and then changed back to the PSP on 6/21. Data should still be good since appropriate calibration factors were applied. |
Measurements: | nsagndrad60sC1.b1:
nsagndrad60sC1.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
06/21/2001 | 1800 | 06/21/2001 | 1830 |
Subject: | NSA/GNDRAD/C1 - Instrument maintenance |
DataStreams: | nsagndrad60sC1.a1, nsagndrad60sC1.b1 |
Description: | The tip tower was lowered for instrument maintenance. Data recorded are garbage. |
Measurements: | nsagndrad60sC1.b1:
nsagndrad60sC1.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
11/08/2001 | 0100 | 11/09/2001 | 0300 |
Subject: | NSA/GNDRAD/C1 - Bad calibrations applied |
DataStreams: | nsagndrad60sC1.a1, nsagndrad60sC1.b1 |
Description: | Bad data due to erroneous calibration constant in configuration file |
Measurements: | nsagndrad60sC1.b1:
nsagndrad60sC1.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/27/1999 | 2330 | 04/27/1999 | 2335 |
04/28/1999 | 1920 | 04/28/1999 | 1930 |
Subject: | NSA/GNDRAD/C1 - Unexplained decrease in PSP and NET data values |
DataStreams: | nsagndrad60sC1.a1, nsagndrad60sC1.b1 |
Description: | 100 W/m2 dip in the PSP data; NET data also affected. Possibly due to operators working around the instruments. |
Measurements: | nsagndrad60sC1.b1:
nsagndrad60sC1.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
03/13/1999 | 1945 | 03/13/1999 | 1955 |
Subject: | NSA/GNDRAD/C1 - Data corrupted by brief spike |
DataStreams: | nsagndrad60sC1.a1, nsagndrad60sC1.b1 |
Description: | There is a unreasonable spike at this time. Simultaneous spikes on the NET, the PSP, and the PIR. Cause unknown, but most likely related to data logger. |
Measurements: | nsagndrad60sC1.b1:
nsagndrad60sC1.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
03/08/1999 | 0000 | 09/30/1999 | 2359 |
Subject: | NSA/GNDRAD/C1 - Rad instruments shaded by shelter |
DataStreams: | nsagndrad60sC1.a1, nsagndrad60sC1.b1 |
Description: | Each day around 02:00 - 03:30 GMT there is a unexpected decrease for the PSP irradiance measurement due to a shading problem associated with the swing set location relative to the instrument shelter. The GNDRAD NET and MFR instrument data also reflects this problem. Problem was resolved when the GNDRAD instruments were moved to the 10 meter tip tower. |
Measurements: | nsagndrad60sC1.b1:
nsagndrad60sC1.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
11/07/2001 | 2100 | 11/07/2001 | 2105 |
Subject: | NSA/GNDRAD/C1 - PSP Data corrupted by brief spike |
DataStreams: | nsagndrad60sC1.a1, nsagndrad60sC1.b1 |
Description: | Large unreasonable narrow spike in PSP data; cause not known. |
Measurements: | nsagndrad60sC1.b1:
nsagndrad60sC1.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
09/24/2002 | 1725 | 11/16/2002 | 0003 |
Subject: | NSA/GNDRAD/C1 - No power to IRT |
DataStreams: | nsagndrad60sC1.a1, nsagndrad60sC1.b1 |
Description: | The data logger failed to supply power to the IRT. |
Measurements: | nsagndrad60sC1.b1:
nsagndrad60sC1.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
05/27/2003 | 1400 | 09/11/2003 | 1906 |
Subject: | NSA/GNDRAD/C1 - IRT cable failure |
DataStreams: | nsagndrad60sC1.b1 |
Description: | The IRT signal became very noisy and the problem was traced to the cable (after the instrument was returned to the vendor for diagnosis). The problem started occurring when ice surrounding the cable began to melt. The cable was repaired and the instrument reinstalled. |
Measurements: | nsagndrad60sC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
09/11/2003 | 1906 | 10/15/2003 | 0015 |
Subject: | NSA/GNDRAD/C1 - IRT returned to vendor |
DataStreams: | nsagndrad60sC1.b1 |
Description: | The IRT was returned to the vendor for diagnosis. It was found to be operating as expected and the signal noise problem was traced to the cable. The cable was repaired and the instrument reinstalled. |
Measurements: | nsagndrad60sC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/15/2004 | 2309 | 05/27/2004 | 1500 |
Subject: | NSA/GNDRAD/C2 - Upwelling PIR measurement - spikes in thermopile signal |
DataStreams: | nsagndradC2.00, nsagndrad20sC2.a1, nsagndrad60sC2.b1 |
Description: | ULH measurements have many spikes at this site. On 2/03, the anomalous spikes become frequent and are very noticeable from 0027 - 0445 UTC. Negative and positive spikes occur on seemingly random days until 5/27/2004. Extensive troublshooting could not resolve problem, including a datalogger changout on 4/22. Problem seems to have resolved itself with the last spikes occuring on 5/27/2004 approximately 1500GMT. No problems with upwelling PIR noise are evident up until and after the conversion from Zeno to Campbell dataloggers on 11/22/2004. |
Measurements: | nsagndrad60sC2.b1:
nsagndradC2.00:
nsagndrad20sC2.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
09/15/2004 | 0000 | 09/22/2004 | 0552 |
Subject: | NSA/GNDRAD/C1 - IRT power failure |
DataStreams: | nsagndrad60sC1.b1 |
Description: | After performing corrective maintenance which involved turning off power to the GNDRAD instruments and data logger, power to the IRT was not restored. The problem was corrected by replacing the data logger. |
Measurements: | nsagndrad60sC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
10/09/2004 | 0000 | 10/15/2004 | 2359 |
Subject: | NSA/GNDRAD/C1 - Frosting/Condensation |
DataStreams: | nsagndradC1.00, nsagndrad20sC1.a1, nsagndrad60sC1.b1 |
Description: | The GNDRAD PIR and IRT comparison was showing the IRT 2-4 W/m^2 greater than the PIR. Suspected snow or frost on the instrument(s). Corrective maintenance performed 10/15/04 at 21:30 UT. Optics of both instruments were cleaned. Upwelling longwave measurement agreement restored (+/- 5 W/^2). Although the relative performance (agreement) of the two instruments improved after corrective maintenance (+/- 2 W/m^2), no correction is suggested because the agreement remains with the estimated measurement uncertainty of +/- 4 W/m^2 (IRT) and +/-10 W/m^2 (Inverted PIR) |
Measurements: | nsagndrad60sC1.b1:
nsagndradC1.00:
nsagndrad20sC1.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/06/2005 | 2030 | 01/12/2005 | 1540 |
Subject: | NSA/GNDRAD/C2 - Incorrect calibration coefficients applied to upwelling(Gndrad)PIR |
DataStreams: | nsagndradC2.00, nsagndrad60sC2.b1 |
Description: | An insitu test comparing the Gndrad PIR and the Gndrad IRT at the NSA was performed from 6 Jan 2005 to 12 Jan 2005. The radiometer mentor requested the Eppley single calibration coefficient for the PIR replace the 4 coefficients method developed by NREL. The Grndrad PIR compared closer to the Gndrad IRT during this period. However, the radiometer mentor believes the 4 coefficient PIR irradiance measurements remains superior to the single coefficient Eppley PIR measurement method. Further questions should be directed to the radiometer instrument mentor. |
Measurements: | nsagndrad60sC2.b1:
nsagndradC2.00:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/01/2005 | 0000 | 04/30/2005 | 2359 |
Subject: | NSA/GNDRAD/C1/C2 - Upwelling Shortwave data flagged bad are good. |
DataStreams: | nsagndrad60sC1.b1, nsagndrad60sC2.b1 |
Description: | The Upwelling Shortwave at both NSA facilites, C1 and C2, have been flagged red by the automatic tests because it is above empiical limits determined for a more southerly site (SGP) for this time of year. The data are good and should be flagged green. The test limits will be revised for NSA. |
Measurements: | nsagndrad60sC1.b1:
nsagndrad60sC2.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
08/24/2005 | 0030 | 08/24/2005 | 0030 |
Subject: | NSA/GNDRAD/C1 - Power Disconnected Briefly |
DataStreams: | nsagndrad60sC1.b1 |
Description: | Power to the Tip tower and Groundrad was disconnected briefly while ground resistance measurements were made. The following comments are from Inst. Mentor Tom Stoffel: The longwave and shortwave irradiances from GNDRAD were not effected by the temporary power disconnect. Data are good. This would have only stopped the ventilators for a brief time and the data do not show any signs of poor instrument responses. The "sfc_ir_temp" data were, however, impacted during the brief (2 readings?) interval. |
Measurements: | nsagndrad60sC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
02/07/2006 | 0910 | 02/07/2006 | 2350 |
Subject: | NSA/GNDRAD/C1 - power outage affecting some GNDRAD sensors |
DataStreams: | nsagndradC1.00, nsagndrad20sC1.a0, nsagndrad60sC1.b1 |
Description: | During the power outage the upwelling global measurement from the PSP instrument shows a slight increase from -5 to +0 W/m2. This is due to removal of thermal offsets induced by the AC heater during the power outage. This heater is installed within the PSP ventilator - it is necessary for the NSA/C1 climate. The upwelling longwave PIR instrument is unaffected due to case and dome temperature corrections. The IRT is AC powered and was not operational during this time period. |
Measurements: | nsagndrad60sC1.b1:
nsagndradC1.00:
nsagndrad20sC1.a0:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
11/04/2004 | 1600 | 12/21/2005 | 1855 |
Subject: | NSA/GNDRAD/C1 - Reprocess: Longwave Calibration error |
DataStreams: | nsagndrad60sC1.b1 |
Description: | Modified pyrgeometer calibration procedures were implemented beginning in December 2003. These modified procedures introduced a calibration bias in the longwave data. The previous procedures were re-implemented at all sites between December 2005 and February 2006 to restore proper calibrations. The data collected while the incorrect procedures were in place are being reprocessing to remove the calibration bias. Note, this also affected standard deviation, maximum and minimum data fields. |
Measurements: | nsagndrad60sC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
11/17/2004 | 0037 | 12/22/2005 | 2152 |
Subject: | NSA/GNDRAD/C2 - Reprocess: Longwave Calibration error |
DataStreams: | nsagndrad60sC2.b1 |
Description: | Modified pyrgeometer calibration procedures were implemented beginning in December 2003. These modified procedures introduced a calibration bias in the longwave data. The previous procedures were re-implemented at all sites between December 2005 and February 2006 to restore proper calibrations. The data collected while the incorrect procedures were in place are being reprocessing to remove the calibration bias. Note, this also affected standard deviation, maximum and minimum data fields. |
Measurements: | nsagndrad60sC2.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
08/11/2006 | 1930 | 08/25/2006 | 1859 |
Subject: | NSA/GNDRAD/C1 - Incorrect calibration coefficients |
DataStreams: | nsagndradC1.00, nsagndrad20sC1.a0, nsagndrad20sC1.a1, nsagndrad60sC1.b1 |
Description: | BarrowC1, Gndrad. On Aug 11th the PSP-US was changed out and the Campbell program was changed to reflect this. However, an old program that uses the 4 coefficient PIR cal factors was used. The PIR-UIR was not changed out, however, the logger program coeffs reverted back to the 4 Coeffcients. The Eppley PIR-UIR coefficients for this S/N 30168F3 are : K0=0.0, K1(aka k)=.25253, K2= 1.0, K3=-4, Kr=0.0. |
Measurements: | nsagndrad60sC1.b1:
nsagndradC1.00:
nsagndrad20sC1.a1:
nsagndrad20sC1.a0:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
10/02/2007 | 2300 | 10/04/2007 | 0145 |
Subject: | NSA/GNDRAD/C1 - Preventive maintenance |
DataStreams: | nsagndrad20sC1.a0, nsagndrad60sC1.b1 |
Description: | Preventive maintenance including ventilator repairs and instrument changeout during this time resulted in data that are not scientifically relevant. |
Measurements: | nsagndrad60sC1.b1:
nsagndrad20sC1.a0:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
07/27/1999 | 2150 | 08/05/1999 | 2359 |
08/06/1999 | 1208 | 08/07/1999 | 2359 |
10/03/1999 | 0000 | 11/04/1999 | 2359 |
11/23/1999 | 0000 | 11/28/1999 | 2359 |
01/28/2000 | 0000 | 02/03/2000 | 2341 |
09/21/2000 | 1619 | 09/24/2000 | 2258 |
03/15/2002 | 2052 | 03/21/2002 | 1502 |
Subject: | NSA/GNDRAD/C1 - Missing data |
DataStreams: | nsagndrad60sC1.b1 |
Description: | Data are missing and unrecoverable. |
Measurements: | nsagndrad60sC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
10/04/2007 | 0130 | 10/25/2007 | 2149 |
Subject: | NSA/GNDRAD/C1 - Reprocessed: Incorrect calibration coefficient |
DataStreams: | nsagndrad20sC1.a0, nsagndrad60sC1.b1 |
Description: | Installed Gndrad PSP (upwelling shortwave hemispheric irradiance) had calibration coefficient RS applied when it should have used Rsc. ARM is using IR corrected coefficients Rsc@45 and CFc@45 for PSPs deployed at all facilities. PSP #32012F3 should use RSc@45=109.39 and not Rs@45=110.97. Reprocessed to correct upwelling shortwave hemispheric irradiance (US) by: US(new) = (US(old) / 110.97 ) * 109.39 Reprocessing completed March 2008. |
Measurements: | nsagndrad60sC1.b1:
nsagndrad20sC1.a0:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
07/20/2008 | 0330 | 09/15/2008 | 1930 |
Subject: | NSA/GNDRAD/C1 - Upwelling PIR ventilator fan failure |
DataStreams: | nsagndrad20sC1.a0, nsagndrad60sC1.b1 |
Description: | The PIR exhibited a positive bias of approximately 6 W/m2 compared to the upwelling IRT due to ventilator fan failure. Thus, the up_long_hemisp, data stream is high by about 6 W/m2. Bias is not consistent and depends on atmospheric conditions. Either disregard the up_long_hemisp data or use the IRT for an estimate of the up_long_hemisp values during this time period. |
Measurements: | nsagndrad60sC1.b1:
nsagndrad20sC1.a0:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
02/03/2000 | 0000 | 03/03/2003 | 2359 |
Subject: | NSA/GNDRAD/C1 - Net radiometer removed |
DataStreams: | nsagndrad60sC1.a1, nsagndrad60sC1.b1 |
Description: | The net radiometer was removed from the NSA.C1 GNDRAD instrument suite on Feb 3, 2000. Net rad variables were filled with garbage data until Sept 23, 2000 and with missing values (-9999) until 20041103. The net rad variables were removed from the netcdf files after 20041103. A reprocessing task (RID-526) has been submitted to the queue to address the need to add metadata to the NSA.C1 GNDRAD netcdf files documenting the missing data as well as to move toward a consistent datastream format throughout time. |
Measurements: | nsagndrad60sC1.b1:
nsagndrad60sC1.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
03/01/1999 | 0000 | 12/22/2000 | 2020 |
Subject: | NSA/GNDRAD/C1 - Reprocess: IRT insufficiently heated |
DataStreams: | nsagndrad60sC1.b1 |
Description: | IRT had insufficient heating to maintain an internal reference temperature above 0 degrees C. Measurements of surface temperature were over-estimated when instrument was below freezing. Data will be reprocessed, but users can correct data using the following correction factor: If T_reference < -5?C, then IRT_corrected = (IRT_original - 32.993K)/0.87238 where T_reference can be estimated with the ambient temperature (e.g. inst_up_long_hemisp_dome_temp or inst_up_long_dome_temp) |
Measurements: | nsagndrad60sC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
08/01/2000 | 0000 | 06/19/2001 | 1830 |
Subject: | NSA/GNDRAD/C2 - Reprocess: IRT insufficiently heated |
DataStreams: | nsagndrad60sC2.b1 |
Description: | IRT had insufficient heating to maintain an internal reference temperature above 0 degrees C. Measurements of surface temperature were over-estimated when instrument was below freezing. Data will be reprocessed, but users can correct data using the following correction factor: If T_reference < -5?C, then IRT_corrected = (IRT_original - 32.993K)/0.87238 where T_reference can be estimated with the ambient temperature (e.g. inst_up_long_hemisp_dome_temp or inst_up_long_dome_temp) |
Measurements: | nsagndrad60sC2.b1:
|