DQR ID | Subject | Data Streams Affected |
---|---|---|
D010720.1 | NSA/SKYRAD/C2 - wrong calibration coefficent for PIRd in ATQ | nsaskyradC2.00, nsaskyrad20sC1.a1, nsaskyrad60sC1.a1, nsaskyrad60sC1.b1 |
D020814.9 | NSA/SKYRAD/C1 - reprocess: PIR identified as unshaded is really shaded | nsaskyrad60sC1.b1 |
D021111.10 | NSA/SKYRAD/C1 - Unshaded PIR maintenance | nsaskyrad60sC1.a1, nsaskyrad60sC1.b1 |
D021111.12 | NSA/SKYRAD/C1 - PIR data suspect | nsaskyrad60sC1.a1, nsaskyrad60sC1.b1 |
D021111.13 | NSA/SKYRAD/C1 - Shaded PIR data unreasonable | nsaskyrad60sC1.a1, nsaskyrad60sC1.b1 |
D021111.18 | NSA/SKYRAD/C1 - Unshaded and Shaded PIR data bad | nsaskyrad60sC1.a1, nsaskyrad60sC1.b1 |
D021111.20 | NSA/SKYRAD/C1 - PIR data suspect | nsaskyrad60sC1.a1, nsaskyrad60sC1.b1 |
D021111.6 | NSA/SKYRAD/C1 - Unshaded PIR maintenance | nsaskyrad60sC1.a1, nsaskyrad60sC1.b1 |
D021111.7 | NSA/SKYRAD/C1 - Miscalibrated Unshaded PIR data | nsaskyrad60sC1.a1, nsaskyrad60sC1.b1 |
D021111.8 | NSA/SKYRAD/C1 - Noise in Unshaded PIR data | nsaskyrad60sC1.a1, nsaskyrad60sC1.b1 |
D021111.9 | NSA/SKYRAD/C1 - Unshaded PIR maintenance | nsaskyrad60sC1.a1, nsaskyrad60sC1.b1 |
D021213.2 | NSA/SKYRAD/C1 - NIP shaded by skyrad stand around local midnight | nsaskyrad60sC1.a1, nsaskyrad60sC1.b1 |
D021213.4 | NSA/SKYRAD/C1 - PSP shaded by MFRSR after local midnight | nsaskyrad60sC1.a1, nsaskyrad60sC1.b1 |
D030304.1 | NSA/SKYRAD/C1: Noisy PIR data at Barrow | nsaskyrad60sC1.a1, nsaskyrad60sC1.b1 |
D030819.2 | NSA/SKYRAD/C1 - IRT failed | nsaskyrad60sC1.a1, nsaskyrad60sC1.b1 |
D030820.1 | NSA/SKYRAD/C1 - IRT incorrectly configured | nsaskyrad60sC1.a1, nsaskyrad60sC1.b1 |
D030821.2 | NSA/SKYRAD/C1 - IRT incorrect min/max value | nsaskyrad60sC1.b1 |
D030911.1 | NSA/SKYRAD/C1 - Missing data due to Logger Failure | nsaskyradC1.00, nsaskyrad20sC1.a1, nsaskyrad60sC1.b1 |
D031007.2 | NSA/SKYRAD/C1 - IRT measurements during precipitation events | nsaskyrad60sC1.b1 |
D031226.1 | NSA/SKYRAD/C1 - NSA B&W nighttime offset in Barrow too large | nsaskyradC1.00, nsaskyrad60sC1.a1, nsaskyrad60sC1.b1 |
D040129.2 | NSA/SKYRAD/C1 - Noisy PIR data at Barrow | nsaskyrad60sC1.a1, nsaskyrad60sC1.b1 |
D040213.4 | NSA/SKYRAD/C1 - Downwelling IRT bias | nsaskyrad60sC1.b1 |
D040415.1 | NSA/SKYRAD/C1 - direct normal pyhrheliometer (NIP)shaded by WWRp | nsaskyradC1.00, nsaskyrad60sC1.b1 |
D040421.2 | NSA/SKYRAD/C1 - Tracker Inoperative | nsaskyrad60sC1.b1 |
D040421.3 | NSA/SKYRAD/C1 - itermittant IRT bias | nsaskyrad60sC1.b1 |
D040523.1 | NSA/SKYRAD/C1 - Frosting and Condensation | nsaskyradC1.00, nsaskyrad20sC1.a1, nsaskyrad60sC1.b1 |
D050604.1 | NSA/SKYRAD/C1 - Datalogger grounding problem | nsaskyradC1.00, nsaskyrad20sC1.a0, nsaskyrad20sC1.a1, nsaskyrad60sC1.b1 |
D051101.2 | NSA/SKYRAD/C1 - IRT failure | nsaskyrad60sC1.b1 |
D051107.2 | NSA/SKYRAD/C1 - Instrument logger, possible gounding problem | nsaskyradC1.00, nsaskyrad20sC1.a0, nsaskyrad60sC1.b1 |
D051202.1 | NSA/SKYRAD/C1 - Reprocess: Incorrect datalogger program affecting PIR1 and PIR2 downwelling longwave | nsaskyrad20sC1.a0, nsaskyrad60sC1.b1 |
D060630.37 | NSA/SKYRAD/C1 - Reprocess: Longwave Calibration error | nsaskyrad60sC1.b1 |
D060724.2 | NSA/SKYRAD/C1 - Summer solstice shading of radiometers | nsaskyrad60sC1.b1 |
Start Date | Start Time | End Date | End Time |
---|---|---|---|
07/06/2001 | 2300 | 07/19/2001 | 0100 |
Subject: | NSA/SKYRAD/C2 - wrong calibration coefficent for PIRd in ATQ |
DataStreams: | nsaskyradC2.00, nsaskyrad20sC1.a1, nsaskyrad60sC1.a1, nsaskyrad60sC1.b1 |
Description: | Due to confusion over ARM calibration policy, a revised calibration was installed and was in place for the duration of the time period indicated. When the error was noted, the original calibration was re-installed. Users may notice discontinuities in PIRd data at the time boundaries of this DQR. |
Measurements: | nsaskyrad20sC1.a1:
nsaskyrad60sC1.a1:
nsaskyrad60sC1.b1:
nsaskyradC2.00:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
05/15/2002 | 1905 | 06/24/2002 | 2359 |
Subject: | NSA/SKYRAD/C1 - reprocess: PIR identified as unshaded is really shaded |
DataStreams: | nsaskyrad60sC1.b1 |
Description: | On 5/15/02 the Global PIR was moved from the unshaded position on the Skyrad stand to a shaded spot on the tracker. It is still using the same Logger channel as it did as an unshaded PIR even though it is now shaded. |
Measurements: | nsaskyrad60sC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/14/1999 | 2115 | 04/14/1999 | 2145 |
Subject: | NSA/SKYRAD/C1 - Unshaded PIR maintenance |
DataStreams: | nsaskyrad60sC1.a1, nsaskyrad60sC1.b1 |
Description: | During this time, the PIR unshaded was swapped on the SKYRAD stand. |
Measurements: | nsaskyrad60sC1.a1:
nsaskyrad60sC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/26/2001 | 0900 | 04/26/2001 | 1800 |
Subject: | NSA/SKYRAD/C1 - PIR data suspect |
DataStreams: | nsaskyrad60sC1.a1, nsaskyrad60sC1.b1 |
Description: | PIR shaded and PIR unshaded show unusual differences during this time period, frosting or icing is the most probable explanation but we don't know for sure. |
Measurements: | nsaskyrad60sC1.a1:
nsaskyrad60sC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
11/05/2001 | 0000 | 11/07/2001 | 2010 |
Subject: | NSA/SKYRAD/C1 - Shaded PIR data unreasonable |
DataStreams: | nsaskyrad60sC1.a1, nsaskyrad60sC1.b1 |
Description: | Scientificly unreasonable data values, the problem disappeared after the datalogger was exchanged with the spare. The data logger was exchanged on 11/7 at 20:10 GMT. |
Measurements: | nsaskyrad60sC1.a1:
nsaskyrad60sC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/14/1999 | 2115 | 04/14/1999 | 2145 |
Subject: | NSA/SKYRAD/C1 - Unshaded and Shaded PIR data bad |
DataStreams: | nsaskyrad60sC1.a1, nsaskyrad60sC1.b1 |
Description: | Data during this time period is corrupted (seen as a dip in the measurements). During this time, the PIR unshaded was being replaced on the SKYRAD stand. This work affected the shaded PIR as well due to the presence of the operators in it's field of view. |
Measurements: | nsaskyrad60sC1.a1:
nsaskyrad60sC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/25/2001 | 1000 | 04/25/2001 | 1900 |
04/26/2001 | 0900 | 04/26/2001 | 1800 |
Subject: | NSA/SKYRAD/C1 - PIR data suspect |
DataStreams: | nsaskyrad60sC1.a1, nsaskyrad60sC1.b1 |
Description: | PIR shaded and PIR unshaded show unusual differences during this time period, frosting or icing is one possible explanation but we don't know. |
Measurements: | nsaskyrad60sC1.a1:
nsaskyrad60sC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
03/15/2001 | 2345 | 03/16/2001 | 0045 |
Subject: | NSA/SKYRAD/C1 - Unshaded PIR maintenance |
DataStreams: | nsaskyrad60sC1.a1, nsaskyrad60sC1.b1 |
Description: | Unreasonable data from 3/15 23:45 until 3/16 0:45 due to exchange of PIR instrument to the PIR spare (32054F3). This was done so the PIR could go to NOAA/CMDL in Boulder for calibration as part of the IPARSC II IOP and be included in this work. |
Measurements: | nsaskyrad60sC1.a1:
nsaskyrad60sC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
03/16/2001 | 0045 | 03/25/2001 | 0235 |
Subject: | NSA/SKYRAD/C1 - Miscalibrated Unshaded PIR data |
DataStreams: | nsaskyrad60sC1.a1, nsaskyrad60sC1.b1 |
Description: | Calibration coefficient for PIR spare (32054F3) was updated on 3/25 2:35 GMT. The old PIR cal coefficient was used during this period. The PIR spare (32054F3) was calibrated by NOAA/CMDL in Boulder prior to the IOP and replacement on 3/16 when the original station PIR was shipped to Boulder for a post IOP calibration. |
Measurements: | nsaskyrad60sC1.a1:
nsaskyrad60sC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
10/06/2001 | 1000 | 11/07/2001 | 2359 |
Subject: | NSA/SKYRAD/C1 - Noise in Unshaded PIR data |
DataStreams: | nsaskyrad60sC1.a1, nsaskyrad60sC1.b1 |
Description: | Noise increased and an offset from shaded PIR became apparent during this period. |
Measurements: | nsaskyrad60sC1.a1:
nsaskyrad60sC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/01/1999 | 2300 | 04/01/1999 | 2359 |
Subject: | NSA/SKYRAD/C1 - Unshaded PIR maintenance |
DataStreams: | nsaskyrad60sC1.a1, nsaskyrad60sC1.b1 |
Description: | A new PIR was installed during this time period by Phil Utley. |
Measurements: | nsaskyrad60sC1.a1:
nsaskyrad60sC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
05/01/1999 | 0000 | 08/10/1999 | 0000 |
05/01/2000 | 0000 | 08/10/2000 | 0000 |
05/01/2001 | 0000 | 08/10/2001 | 0000 |
05/01/2002 | 0000 | 08/10/2002 | 0000 |
Subject: | NSA/SKYRAD/C1 - NIP shaded by skyrad stand around local midnight |
DataStreams: | nsaskyrad60sC1.a1, nsaskyrad60sC1.b1 |
Description: | Around local midnight 9:30-10:30 GMT during summer clear sky the normal incidence pyranometer is shaded by the instrument stand.This causes the reading to be 0 W/m2. If cosine correction is applied for irradiance calulations this effect is negligible due to the low solar angle. |
Measurements: | nsaskyrad60sC1.a1:
nsaskyrad60sC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
05/01/1999 | 0000 | 08/10/1999 | 0000 |
05/01/2000 | 0000 | 08/10/2000 | 0000 |
05/01/2001 | 0000 | 08/10/2001 | 0000 |
05/01/2002 | 0000 | 08/10/2002 | 0000 |
Subject: | NSA/SKYRAD/C1 - PSP shaded by MFRSR after local midnight |
DataStreams: | nsaskyrad60sC1.a1, nsaskyrad60sC1.b1 |
Description: | Just past local midnight (11:00-11:40 GMT during summer clear sky) the global hemispherical pyranometer is shaded by the MFRSR instrument for about 40 minutes. This causes the reading to be 0 W/m2. This effect would be negligible in a daily average due to the low solar angle. |
Measurements: | nsaskyrad60sC1.a1:
nsaskyrad60sC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
05/24/2002 | 0000 | 06/24/2002 | 2359 |
Subject: | NSA/SKYRAD/C1: Noisy PIR data at Barrow |
DataStreams: | nsaskyrad60sC1.a1, nsaskyrad60sC1.b1 |
Description: | PIR1 data is noisy throughout the entire period, though there is still a definite signal through the noise. |
Measurements: | nsaskyrad60sC1.a1:
nsaskyrad60sC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/05/2002 | 2330 | 06/27/2002 | 1920 |
Subject: | NSA/SKYRAD/C1 - IRT failed |
DataStreams: | nsaskyrad60sC1.a1, nsaskyrad60sC1.b1 |
Description: | |
Measurements: | nsaskyrad60sC1.a1:
nsaskyrad60sC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
06/27/2002 | 1920 | 07/10/2002 | 1900 |
Subject: | NSA/SKYRAD/C1 - IRT incorrectly configured |
DataStreams: | nsaskyrad60sC1.a1, nsaskyrad60sC1.b1 |
Description: | The IRT was removed for repair and replaced with a spare that was not configured properly. Data are incorrect. |
Measurements: | nsaskyrad60sC1.a1:
nsaskyrad60sC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/01/2001 | 0000 | 03/03/2003 | 2359 |
Subject: | NSA/SKYRAD/C1 - IRT incorrect min/max value |
DataStreams: | nsaskyrad60sC1.b1 |
Description: | The values of valid_min and valid_max for field sky_ir_temp were incorrectly assigned to -49.7 and +50.0 C, respectively. The actual values should be -60 and +40 C. |
Measurements: | nsaskyrad60sC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
09/07/2003 | 1100 | 09/19/2003 | 2359 |
Subject: | NSA/SKYRAD/C1 - Missing data due to Logger Failure |
DataStreams: | nsaskyradC1.00, nsaskyrad20sC1.a1, nsaskyrad60sC1.b1 |
Description: | Logger failure resulted in missing data during the specified period. |
Measurements: | nsaskyrad20sC1.a1:
nsaskyradC1.00:
nsaskyrad60sC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/01/1999 | 0000 | 03/28/2003 | 0200 |
Subject: | NSA/SKYRAD/C1 - IRT measurements during precipitation events |
DataStreams: | nsaskyrad60sC1.b1 |
Description: | The IRT measurement of sky/cloud temperature was in question during precipitation events because rain or snow could accumulate in the upward-pointed lens barrel. This was corrected by reorienting the IRT to measure the sky temperature as reflected by a gold mirror. |
Measurements: | nsaskyrad60sC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
08/20/2001 | 0000 | 01/23/2002 | 0000 |
Subject: | NSA/SKYRAD/C1 - NSA B&W nighttime offset in Barrow too large |
DataStreams: | nsaskyradC1.00, nsaskyrad60sC1.a1, nsaskyrad60sC1.b1 |
Description: | This problem only became apparent as NSA C1 nights became long enough for full darkness. The shaded global diffuse instrument (Eppley 8-48) showed a negative nighttime offset larger than the expected 0 to -4 W/m2. Typically -5 to -8 W/m2. This size of offset is not uncommon with Eppley PSPs but not observed with Eppley 8-48s. The problem was corrected with replacement of mounting screws which were creating a ground loop. |
Measurements: | nsaskyrad60sC1.a1:
nsaskyradC1.00:
nsaskyrad60sC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
06/25/2002 | 0000 | 01/16/2003 | 2359 |
Subject: | NSA/SKYRAD/C1 - Noisy PIR data at Barrow |
DataStreams: | nsaskyrad60sC1.a1, nsaskyrad60sC1.b1 |
Description: | PIR1 data is noisy throughout the entire period, though there is still a definite signal through the noise. |
Measurements: | nsaskyrad60sC1.a1:
nsaskyrad60sC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
12/11/2003 | 1200 | 01/09/2004 | 2120 |
Subject: | NSA/SKYRAD/C1 - Downwelling IRT bias |
DataStreams: | nsaskyrad60sC1.b1 |
Description: | The downwelling IRT was measuring higher sky/cloud temperatures than the AERI. The problem was corrected when the mirror was replaced. |
Measurements: | nsaskyrad60sC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/09/2004 | 1500 | 04/16/2004 | 1600 |
Subject: | NSA/SKYRAD/C1 - direct normal pyhrheliometer (NIP)shaded by WWRp |
DataStreams: | nsaskyradC1.00, nsaskyrad60sC1.b1 |
Description: | Direct normal radiation values drop nearly to zero from about 1515 GMT - 1525 GMT from 4/05 to 4/16 2004. Field observation reveals the WWRp is shading the NIP instrument during this time. This shading event was expected to occur several months after the soltice as well but archive data showed no shading on or around 8/30/2004. The direct normal instrument was apparently only shaded during the time period noted. |
Measurements: | nsaskyradC1.00:
nsaskyrad60sC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
11/10/2003 | 0000 | 02/16/2004 | 0230 |
Subject: | NSA/SKYRAD/C1 - Tracker Inoperative |
DataStreams: | nsaskyrad60sC1.b1 |
Description: | A blown fuse resulted in the tracker not shading the PIR and B&W and the NIP not following the sun. |
Measurements: | nsaskyrad60sC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
03/28/2003 | 0200 | 06/21/2006 | 0215 |
Subject: | NSA/SKYRAD/C1 - itermittant IRT bias |
DataStreams: | nsaskyrad60sC1.b1 |
Description: | A problem with the SKYRAD IRT that itermittantly produced a gradual increase in the sky temperature measurement then a sudden correction, as compared to AERI, appears to have been caused by a combination of a failing IR detector, a poor signal cable, a contaminated (with condensation or frost) mirror or lens, and low ambient temperatures. The positive bias was apparently not consistant in either frequency or duration but on days when the unusual behavior is observed, it usually occurred from about 00:00 to 06:00 local time. The instrument was repaired and recalibrated and the signal cable replaced. |
Measurements: | nsaskyrad60sC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
05/13/2004 | 0000 | 05/18/2004 | 0000 |
Subject: | NSA/SKYRAD/C1 - Frosting and Condensation |
DataStreams: | nsaskyradC1.00, nsaskyrad20sC1.a1, nsaskyrad60sC1.b1 |
Description: | The operators in both Barrow and Atqasuk reported significant ice buildup during nights for the period specified, with the ice melting during the days. This condition is reported in preventative maintenance reports as continuing until on or near 5/18/2004. However, review of data shows no discernable radiometer icing. |
Measurements: | nsaskyrad20sC1.a1:
nsaskyradC1.00:
nsaskyrad60sC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
05/13/2005 | 1100 | 05/13/2005 | 2000 |
05/19/2005 | 0830 | 05/24/2005 | 1800 |
05/28/2005 | 1730 | 05/29/2005 | 1800 |
05/31/2005 | 1500 | 06/04/2005 | 0900 |
06/10/2005 | 0300 | 06/10/2005 | 0400 |
Subject: | NSA/SKYRAD/C1 - Datalogger grounding problem |
DataStreams: | nsaskyradC1.00, nsaskyrad20sC1.a0, nsaskyrad20sC1.a1, nsaskyrad60sC1.b1 |
Description: | Both PIRs reported unreasonable high readings with coincident low reading from the IRT. Since both PIR instruments exhibited exactly the same behaviour and the IRT an opposite response during large suspect data excursions this indicates that the false signal maybe the result of poor grounding. The PIR1,2 data and the IRT data are most adversely affected. During the problem periods PIR irradiance increased (typ pos 200-300W/m2) while the IRT response was negative (typ neg 20-30W/m2) but followed the response of the PIR. The Skyrad shortwave instruments were also affected but to much less extent (within their uncertainties). Data quality flags are typically not triggered during these problem periods. Data logger grounding was improved on 6/10 2005. The problem hasn't re-occurred since that time. |
Measurements: | nsaskyrad20sC1.a1:
nsaskyradC1.00:
nsaskyrad60sC1.b1:
nsaskyrad20sC1.a0:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
10/31/2005 | 0600 | 01/18/2006 | 0032 |
Subject: | NSA/SKYRAD/C1 - IRT failure |
DataStreams: | nsaskyrad60sC1.b1 |
Description: | The IRT failed and was replaced with a spare. |
Measurements: | nsaskyrad60sC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
10/22/2005 | 1230 | 10/22/2005 | 1600 |
Subject: | NSA/SKYRAD/C1 - Instrument logger, possible gounding problem |
DataStreams: | nsaskyradC1.00, nsaskyrad20sC1.a0, nsaskyrad60sC1.b1 |
Description: | Possible Skyrad datalogger grounding issues have re-appeared at NSA/C1 for only this short time period. Anomalous data readings during the time range specified are similar to problem which occurred in early summer 2005. |
Measurements: | nsaskyradC1.00:
nsaskyrad60sC1.b1:
nsaskyrad20sC1.a0:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
11/04/2004 | 1900 | 09/09/2005 | 2142 |
Subject: | NSA/SKYRAD/C1 - Reprocess: Incorrect datalogger program affecting PIR1 and PIR2 |
DataStreams: | nsaskyrad20sC1.a0, nsaskyrad60sC1.b1 |
Description: | The excitation delays using in measuring the PIR1 case thermistor commonly named "Case1" and the PIR2 dome thermistor called "Dome2" were discovered to have been incorrectly set to 0 in the Skyrad datalogger program when the new CR23X based Skyrad loggers were installed. The result of no delay in these measurements results in an error in the measured resistance of the thermistors, Case1 and Dome2 and thus the calculated PIR1 and PIR2 irradiances. The errors are inversely proportial to temperature. Users can apply the temperature dependent irradiance corrections shown in the table below. Recall that the reported uncertainty of PIRs is typically +-.25% to +-.5% or 1 to 2 W/m2. The error corrections become the same order of magnitude or larger than the instrument uncertainties at or below 260K or 9F. Correction Table for Skyrad (TWP and NSA) DIR1 and DIR2 Irradiance DIR1 DIR1 DIR2 DIR2 T[F] Tcase[K] Correction[W/m2] Tdome[K] Correction[W/m2] 109.4 316.13 0.00 316.13 0.00 100.5 311.20 -0.15 311.20 0.12 93.2 307.14 -0.12 307.14 0.10 87.0 303.70 -0.10 303.70 0.08 81.6 300.70 -0.17 300.70 0.14 77.0 298.15 -0.22 298.15 0.18 59.4 288.35 -0.34 288.35 0.27 47.4 281.72 -0.23 281.72 0.18 38.5 276.74 -0.42 276.74 0.34 31.3 272.77 -0.48 272.77 0.38 25.4 269.48 -0.61 269.48 0.49 20.3 266.67 -0.67 266.67 0.54 16.0 264.25 -0.82 264.25 0.66 12.1 262.11 -0.98 262.11 0.79 8.7 260.19 -0.97 260.19 0.78 5.6 258.46 -1.07 258.46 0.86 2.7 256.89 -1.17 256.89 0.94 0.1 255.44 -1.33 255.44 1.07 -2.3 254.11 -1.41 254.11 1.13 -4.5 252.87 -1.43 252.87 1.15 -6.6 251.71 -1.52 251.71 1.22 -8.5 250.63 -1.63 250.63 1.31 -10.4 249.62 -1.73 249.62 1.39 -12.2 248.58 -1.79 248.58 1.44 -15.4 246.82 -1.93 246.82 1.55 -18.3 245.23 -2.05 245.23 1.65 -20.9 243.78 -2.22 243.78 1.78 -23.3 242.44 -2.36 242.44 1.89 -25.5 241.21 -2.58 241.21 2.07 -27.5 240.07 -2.65 240.07 2.13 -29.5 239.01 -2.75 239.01 2.21 -31.3 238.00 -3.02 238.00 2.42 |
Measurements: | nsaskyrad60sC1.b1:
nsaskyrad20sC1.a0:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
11/04/2004 | 0300 | 12/21/2005 | 1853 |
Subject: | NSA/SKYRAD/C1 - Reprocess: Longwave Calibration error |
DataStreams: | nsaskyrad60sC1.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: | nsaskyrad60sC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
05/08/1999 | 0000 | 08/05/1999 | 0000 |
05/08/2000 | 0000 | 08/05/2000 | 0000 |
05/08/2001 | 0000 | 08/05/2001 | 0000 |
05/08/2002 | 0000 | 08/05/2002 | 0000 |
05/08/2003 | 0000 | 08/05/2003 | 0000 |
05/08/2004 | 0000 | 08/05/2004 | 0000 |
05/08/2005 | 0000 | 08/05/2005 | 0000 |
05/08/2006 | 0000 | 08/05/2006 | 0000 |
Subject: | NSA/SKYRAD/C1 - Summer solstice shading of radiometers |
DataStreams: | nsaskyrad60sC1.b1 |
Description: | On and around the summer solstice, the NIP (Direct Normal shortwave measurement) and PSP (global hemispheic shortwave measurement) radiometers are shaded by other instruments or support structures. Shading azimuths have been determined for this site. The radiometer mentor suggests not using the data from the NIP and PSP radiometers when the sun is within the following azimuth bounds (typically from May 8th to August 5th of each year): Instrmt Obstruction AzStart AzEnd NIP rad table 346 358 NIP met tower 13 15 PSP mfrsr 6 16 |
Measurements: | nsaskyrad60sC1.b1:
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