DQR ID | Subject | Data Streams Affected |
---|---|---|
D040226.2 | SGP/SIRS/E11 - PSP dome contamination | sgpsirsE11.00 |
D040615.5 | SGP/SIRS/E12 - Incorrect Times | sgpsirsE12.00 |
D040831.5 | SGP/SIRS/E11 - Reprocessing Notice (RID 288) | sgpsirsE11.00 |
D050109.3 | SGP/SIRS/E12 - Ice obscured NIP | sgpsirsE12.00 |
D050429.1 | SGP/SIRS/E12 - Reprocess: Incorrect calibrations | sgpsirsE12.00 |
D060403.1 | SGP/SIRS/E11 - failed ventilator fan | sgpsirsE11.00 |
D070927.2 | SGP/SIRS/E12 - Power supply problem affecting solar tracker | sgpsirsE12.00 |
D080128.1 | SGP/SIRS/C1/E1/E10/E11/E12/E13/E15/E16/E18/E19/E2/E20/E21/E22/E24/E25/E27/E3/E4/E5/E6/E7/E8/E9 - Ice | sgpsirsE12.00, sgpsirsE11.00 |
D151117.1 | SGP/SIRS/E12 - Tracker failure | sgpsirsE12.00, sgpsirsE12.01 |
D160104.7 | SGP Site Power Outage Due to Winter Storm | sgpsirsE12.00, sgpsirsE11.00, sgpsirsE12.01, sgpsirsE11.01 |
Start Date | Start Time | End Date | End Time |
---|---|---|---|
02/20/2004 | 1500 | 03/01/2004 | 1300 |
Subject: | SGP/SIRS/E11 - PSP dome contamination |
DataStreams: | sgpsirsE11.00 |
Description: | Measured values of diffuse shortwave downwelling radiation fluctuated below derived values of downwelling shortwave radiation during the afternoon hours under clear conditions, probably due to a dirty PSP dome. SMOS precipitation and wind speed data reveal rain and wind on 02/19/03 at 2300 GMT probably contaminated the PSP dome with dirt. Precipitation of .4mm on 02/29/04 1400 seems to have effectively cleared the PSP dome since PSP data on 03/01/04 compares correctly to direct and diffuse components. |
Measurements: | sgpsirsE11.00:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
02/19/2004 | 2212 | 03/10/2004 | 2247 |
Subject: | SGP/SIRS/E12 - Incorrect Times |
DataStreams: | sgpsirsE12.00 |
Description: | The ntpd server (time adjustment) stopped working on Feb. 19th at 22:12:16 GMT, and the clock was corrected by -5600.177269 seconds on March 10th at 22:47 GMT. The recorded times for observations are off by amounts ranging from 0 seconds on Feb. 19th to 5600 seconds on March 10th. |
Measurements: | sgpsirsE12.00:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
02/17/2004 | 1741 | 05/05/2004 | 0000 |
Subject: | SGP/SIRS/E11 - Reprocessing Notice (RID 288) |
DataStreams: | sgpsirsE11.00 |
Description: | See below for details of reprocessing that was completed on 20150929. Original DQR category: 4 (Red, Incorrect). ----------------------------------------------------------- During the pyrgeometer instrument (PIR) changeout a datalogger program was loaded with incorrect calibration coefficients for the shortwave instruments. The affected measurements (instruments) were: downwelling diffuse (8-48), upwelling shortwave (PSP), direct normal (NIP) and downwelling shortwave (PSP) Field tech reports the datalogger program was corrected on 4/27/04. Archive data review shows this was not the case and the corrected datalogger program was uploaded sometime late day 5/4/04. The end date for this DQR was chosen to be 5/5/04 0000 the first full day of the correct datalogger program. Recalculate irradiances by determining original mV signal and reapplying the correct calibration coefficients. For each one minute irradiance value perform the following calculations by instrument: DD(corrected) = (DD/107.24)*123.27 US(corrected) = (US/113.19)*127.75 NIP(corrected)= (NIP/120.17)*126.69 DS(corrected) = (DS/118.46)*126.56 |
Measurements: | sgpsirsE11.00:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/06/2005 | 0000 | 01/07/2005 | 2359 |
Subject: | SGP/SIRS/E12 - Ice obscured NIP |
DataStreams: | sgpsirsE12.00 |
Description: | During the morning hours of 01/06, the direct normal shortwave readings are anomalously low in clear sky conditions, causing very large differences (approaching/exceeding 300 W/m^2) between the downwelling shortwave hemispheric (DSH) readings and the derived downwelling shortwave hemispheric readings. It would appear the NIP window had iced over during the previous days storm. The NIP window appears to have cleared itself by the morning of 2005/01/08. |
Measurements: | sgpsirsE12.00:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/26/2005 | 1726 | 05/03/2005 | 1840 |
Subject: | SGP/SIRS/E12 - Reprocess: Incorrect calibrations |
DataStreams: | sgpsirsE12.00 |
Description: | During site corrective maintenance to resolve an Extended Facility data collection problem, the SIRS.E12 datalogger was power cycled (1725 GMT). The datalogger reverted to an old SIRS program with incorrect S/Ns and calibration coefficients for all instruments at this station. The SW data can be recalibrated as follows: First divide value by incorrectly applied cal coeff (first number) then multiply by correct cal coeff (second number) down_short_diffuse_hemisp 107.27 118.68 up_short_hemisp 113.19 127.95 short_direct_normal 120.17 120.52 down_short_hemisp 118.46 102.11 The LW data were recalibrated and reprocessed as part of a larger LW calibration task. The reprocessed data were archived in October 2006. |
Measurements: | sgpsirsE12.00:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
10/01/2005 | 0000 | 04/04/2006 | 1545 |
Subject: | SGP/SIRS/E11 - failed ventilator fan |
DataStreams: | sgpsirsE11.00 |
Description: | E11 downwelling hemispheric shortwave instrument (Eppley PSP) has shown larger and larger nighttime offsets (from -5 to -10 W/m2) since October. A failed ventilator fan was discovered during PM and replaced on 4/4/2006. |
Measurements: | sgpsirsE11.00:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
08/28/2007 | 2000 | 08/31/2007 | 1630 |
Subject: | SGP/SIRS/E12 - Power supply problem affecting solar tracker |
DataStreams: | sgpsirsE12.00 |
Description: | The tracker failed during this time period due to a failed UPS. Tracker was placed on unregulated power on 8/31/2007 to correct the problem while a new UPS was ordered. |
Measurements: | sgpsirsE12.00:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
12/10/2007 | 0000 | 12/25/2007 | 2359 |
Subject: |
|
DataStreams: | sgpsirsE12.00, sgpsirsE11.00 |
Description: | Ice storms affected the SGP central and extended facilities starting Dec 10 0000GMT to mid/late December. Each facility was affected at various times and degrees dependant on elevation, latitude and whether power failed for short or extended periods of time. By December 15th most ice had melted from the radiometers at all the faclities but power outages and tracker failures persisted at some stations. |
Measurements: | sgpsirsE12.00:
sgpsirsE11.00:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
07/20/2012 | 0144 | 08/02/2012 | 1521 |
Subject: | SGP/SIRS/E12 - Tracker failure |
DataStreams: | sgpsirsE12.00, sgpsirsE12.01 |
Description: | Tracker failed and instrument was not correctly tracking the sun. |
Measurements: | sgpsirsE12.00:
sgpsirsE12.01:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
12/26/2015 | 0000 | 01/01/2016 | 2359 |
Subject: | SGP Site Power Outage Due to Winter Storm |
DataStreams: | sgpsirsE12.00, sgpsirsE11.00, sgpsirsE12.01, sgpsirsE11.01 |
Description: | On Saturday and Sunday, December 26 and 27th a powerful winter storm (Goliath) brought sleet and freezing rain to much of Oklahoma with wind gusts of 45 MPH at times. The result was very very slick roads and mass power outages. The SGP central facility lost power at 8:55 PM CDT on Sunday, December 27th. The power was restored on 7:56 PM CDT on Wednesday, December 30th Site Emergency procedures were activated and Technicians drained water out of instrument reservoirs and other measures as needed, early Monday morning. On Wednesdays as roads and power started was restored to much of the areas east of I-35 , Site Technicians performed maintenance on several Extended Facilities. During this period, data are potentially missing, incorrect, or suspect. Carefully inspect the data before use. |
Measurements: | sgpsirsE12.00:
sgpsirsE12.01:
sgpsirsE11.00:
sgpsirsE11.01:
|