DQR ID | Subject | Data Streams Affected |
---|---|---|
D041206.1 | SGP/SIRS/E10 - tracker failure | sgpsirsE10.00, sgpsirsE10.b1, sgpsirs20sE10.a0 |
D050109.3 | SGP/SIRS/E12 - Ice obscured NIP | sgpsirsE12.00, sgpsirsE12.b1, sgpsirs20sE12.a0 |
D050114.5 | SGP/SIRS/E15 - Failed NIP cable | sgpsirsE15.00, sgpsirsE15.b1, sgpsirs20sE15.a0 |
D050131.22 | SGP/SIRS/E11 - Ice storm | sgpsirsE11.b1, sgpsirs20sE11.a0 |
D050131.23 | SGP/SIRS/E15 - Ice storm | sgpsirsE15.b1, sgpsirs20sE15.a0 |
D050131.24 | SGP/SIRS/E16 - Ice storm | sgpsirsE16.b1, sgpsirs20sE16.a0 |
D050205.1 | SGP/SIRS/E1 - broken cable on DSDH (aka DD) measurment instrument - Eppley 8-48. | sgpsirsE1.00, sgpsirsE1.b1, sgpsirs20sE1.a0 |
D050205.4 | SGP/SIRS/E18 - Possible PSP dome contamination | sgpsirsE18.00, sgpsirsE18.b1, sgpsirs20sE18.a0 |
D050429.1 | SGP/SIRS/E12 - Reprocess: Incorrect calibrations | sgpsirsE12.00, sgpsirsE12.b1, sgpsirs20sE12.a0 |
D050601.1 | SGP/SIRS/E13 - Reprocess: incorrect calibrations | sgpsirsE13.00, sgpsirsE13.b1, sgpsirs20sE13.a0 |
D050929.1 | SGP/SIRS/C1 - sun tracker power failure | sgpsirsC1.00, sgpsirsC1.b1, sgpsirs20sC1.a0 |
D060331.2 | SGP/SIRS/E1 - Intermittantly missing downwelling diffuse | sgpsirsE1.00, sgpsirsE1.b1, sgpsirs20sE1.a0 |
D060403.1 | SGP/SIRS/E11 - failed ventilator fan | sgpsirsE11.00, sgpsirsE11.b1, sgpsirs20sE11.a0 |
D060403.3 | SGP/SIRS/E19 - Ventilator failure | sgpsirsE19.00, sgpsirsE19.b1, sgpsirs20sE19.a0 |
D060508.1 | SGP/SIRS/E16 - NIP Instrument Failure | sgpsirsE16.b1, sgpsirs20sE16.a0 |
D061115.2 | SGP/SIRS/E18 - Upwelling SW cable severed | sgpsirsE18.00, sgpsirsE18.b1, sgpsirs20sE18.a0 |
D061121.2 | SGP/SIRS/C1 - Upwelling SW cable problem | sgpsirsC1.00, sgpsirsC1.b1, sgpsirs20sC1.a0 |
D070306.1 | SGP/SIRS/C1 - Reprocess: Incorrect calibration coefficients | sgpsirsC1.00, sgpsirsC1.b1, sgpsirs20sC1.a0 |
D070424.1 | SGP/SIRS/C1 - Upwelling LW cable problems | sgpsirsC1.00, sgpsirsC1.b1, sgpsirs20sC1.a0 |
Start Date | Start Time | End Date | End Time |
---|---|---|---|
11/04/2004 | 1800 | 01/26/2005 | 1600 |
Subject: | SGP/SIRS/E10 - tracker failure |
DataStreams: | sgpsirsE10.00, sgpsirsE10.b1, sgpsirs20sE10.a0 |
Description: | During the night of 11/05-06 2004 the tracker failed at this location. During CM on 12/01, power cycling returned the tracker to service. However, tracker was not properly tracking in the AM. Tracker failed again sometime near 01/01/2005. CM on reloaded the tracker program and realigned the tracker on 01/26/2005 1600GMT. It has been working correctly since this time. |
Measurements: | sgpsirsE10.b1:
sgpsirsE10.00:
sgpsirs20sE10.a0:
|
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, sgpsirsE12.b1, sgpsirs20sE12.a0 |
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.b1:
sgpsirs20sE12.a0:
sgpsirsE12.00:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/09/2005 | 0849 | 01/18/2005 | 1900 |
Subject: | SGP/SIRS/E15 - Failed NIP cable |
DataStreams: | sgpsirsE15.00, sgpsirsE15.b1, sgpsirs20sE15.a0 |
Description: | After the ice storm, the SHORT_DIRECT_NORMAL values were bad or missing continuously. Corrective Maintenance on 01/18 found the NIP cable had broken inside the Bendix connector. The NIP cable was repaired and returned to service. |
Measurements: | sgpsirsE15.00:
sgpsirsE15.b1:
sgpsirs20sE15.a0:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/05/2005 | 0602 | 01/11/2005 | 1423 |
Subject: | SGP/SIRS/E11 - Ice storm |
DataStreams: | sgpsirsE11.b1, sgpsirs20sE11.a0 |
Description: | Data missing due to ice storm. |
Measurements: | sgpsirsE11.b1:
sgpsirs20sE11.a0:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/05/2005 | 0202 | 01/09/2005 | 0848 |
Subject: | SGP/SIRS/E15 - Ice storm |
DataStreams: | sgpsirsE15.b1, sgpsirs20sE15.a0 |
Description: | Data missing due to an ice storm. |
Measurements: | sgpsirsE15.b1:
sgpsirs20sE15.a0:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/05/2005 | 0602 | 01/09/2005 | 1349 |
Subject: | SGP/SIRS/E16 - Ice storm |
DataStreams: | sgpsirsE16.b1, sgpsirs20sE16.a0 |
Description: | Data missing due to ice storm. |
Measurements: | sgpsirsE16.b1:
sgpsirs20sE16.a0:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
12/30/2004 | 2100 | 02/08/2005 | 2055 |
Subject: | SGP/SIRS/E1 - broken cable on DSDH (aka DD) measurment instrument - Eppley 8-48. |
DataStreams: | sgpsirsE1.00, sgpsirsE1.b1, sgpsirs20sE1.a0 |
Description: | Occasionally, the downwelling shortwave diffuse hemispheric (DSDH) readings spike to unreasonably low levels, causing derived downwelling shortwave hemispheric (DSH) readings to spike well below the actual DSH readings. Technicians repaired the DSDH instument (an Eppley 8-48) cable on 02/08/2005 2055GMT. There have been no dropouts since that time. |
Measurements: | sgpsirs20sE1.a0:
sgpsirsE1.b1:
sgpsirsE1.00:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
02/03/2005 | 1200 | 02/15/2005 | 2250 |
Subject: | SGP/SIRS/E18 - Possible PSP dome contamination |
DataStreams: | sgpsirsE18.00, sgpsirsE18.b1, sgpsirs20sE18.a0 |
Description: | Downwelling shortwave hemispheric (DSH) measurements did not agree with derived DSH readings during the morning hours up to 1500GMT each clear day. PM cleaning on 2/16 2250 revealed nothing other than dirty water spots. A dirty or ice covered PSP dome may have been the cause, clearing itself before the PM crew arrived. |
Measurements: | sgpsirs20sE18.a0:
sgpsirsE18.b1:
sgpsirsE18.00:
|
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, sgpsirsE12.b1, sgpsirs20sE12.a0 |
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.b1:
sgpsirs20sE12.a0:
sgpsirsE12.00:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
05/25/2005 | 1409 | 06/02/2005 | 2205 |
Subject: | SGP/SIRS/E13 - Reprocess: incorrect calibrations |
DataStreams: | sgpsirsE13.00, sgpsirsE13.b1, sgpsirs20sE13.a0 |
Description: | After a long data gap on 5/25/2005, presumably a power outage, the following datastreams were showing incorrect values as well as incorrect calibration coefficients in the datalogger program: down_long_hemisp_shaded (downwelling PIR instrument) up_long_hemisp (upwelling PIR instrument) short_direct_normal (NIP instrument) The SIRS.E13 datalogger was power cycled (6/2/2005 2200GMT) and the correct program loaded into the SIRS datalogger and storage module. The data during this time range can be recalibrated as follows: First divide value by incorrectly applied cal coeff (first number) then multiply by correct cal coeff (second number) short_direct_normal 120.28 124.58 up_long_netir 0.2386 0.2595 down_long_netir 0.3052 0.2304 Reapply cal coeffs below using up_long_netIR(uV), inst_up_long_dome_temp(K), inst_up_long_dome_temp(K) using procedure described in SIRS instrument manual. up_long_hemisp k0 -18.3400 W/m^2\n, k1 0.2595 W/(m^2*uV)\n, k2 1.0380 unitless\n, k3 -2.7420 unitless\n, kr 0.0007044 K/uV\n, Reapply cal coeffs below using down_long_netIR(uV),inst_down_long_dome_temp (K),inst_down_long_dome_temp(K). down_long_hemisp_shaded k0 -11.6300 W/m^2\n, k1 0.2304 W/(m^2*uV)\n, k2 1.0190 unitless\n, k3 -2.4230 unitless\n, kr 0.0007044 K/uV\n, |
Measurements: | sgpsirsE13.b1:
sgpsirs20sE13.a0:
sgpsirsE13.00:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
09/27/2005 | 1430 | 09/27/2005 | 1630 |
Subject: | SGP/SIRS/C1 - sun tracker power failure |
DataStreams: | sgpsirsC1.00, sgpsirsC1.b1, sgpsirs20sC1.a0 |
Description: | C1 experienced a sun tracker power faulure. The tracker was reset by onsite personnel shortly after the power failed. Only shaded and direct instruments were affected - i.e. the downwelling diffuse measurement from the 8-48 B&W pyranometer and the direct normal measurement from the NIP pyrheliometer. The downwelling longwave PIR data was unaffected by this event. |
Measurements: | sgpsirsC1.b1:
sgpsirsC1.00:
sgpsirs20sC1.a0:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
10/26/2005 | 1630 | 04/04/2006 | 2005 |
Subject: | SGP/SIRS/E1 - Intermittantly missing downwelling diffuse |
DataStreams: | sgpsirsE1.00, sgpsirsE1.b1, sgpsirs20sE1.a0 |
Description: | Starting on or about 10/26/2005 the downwelling diffuse hemispheric irradiance (Eppley 8-48) instrument had intermittant missing values. Technicians found a loose wire on the instrument connector and repaired it on 4/4/2006. Use global shortwave hemispheric (PSP) component - normal incident component (CosZA*NIP) to calulate diffuse component. Comparison of absolute difference between actual and computed diffuse component values and diffuse standard deviations > 1-2 W/m2 can help filter the noisy diffuse data. There is no standard method. |
Measurements: | sgpsirs20sE1.a0:
sgpsirsE1.b1:
sgpsirsE1.00:
|
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, sgpsirsE11.b1, sgpsirs20sE11.a0 |
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.b1:
sgpsirsE11.00:
sgpsirs20sE11.a0:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/11/2006 | 0000 | 04/13/2006 | 1522 |
Subject: | SGP/SIRS/E19 - Ventilator failure |
DataStreams: | sgpsirsE19.00, sgpsirsE19.b1, sgpsirs20sE19.a0 |
Description: | Dowenlling shortwave hemispheric instrument signal (Eppley PSP) is very erratic due to failed ventilator fan which was replaced during PM on 04/13/2006. |
Measurements: | sgpsirsE19.b1:
sgpsirs20sE19.a0:
sgpsirsE19.00:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/28/2006 | 1543 | 05/12/2006 | 1608 |
Subject: | SGP/SIRS/E16 - NIP Instrument Failure |
DataStreams: | sgpsirsE16.b1, sgpsirs20sE16.a0 |
Description: | The short_direct_normal dropped below MIN value on 4/28/06 resulting in failure of the up_long_hemisp started 3-component test. No data are available from 20060428.1900 through 20060503.21:39. When the data returned, the short_direct normal fluctuated wildly throughout the day, and down_long_hemisp & up_long_hemisp failed the 3-component test. Technicians determined the NIP had failed and replaced it 5/12. Use component method ((global - diffuse)/cos(ZA)) to calculate direct normal. For more information on this summation method please see section 7.2 (Theory of Operation) of the SIRS Handbook: http://www.arm.gov/publications/tech_reports/handbooks/sirs_handbook.pdf |
Measurements: | sgpsirsE16.b1:
sgpsirs20sE16.a0:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
11/07/2006 | 0100 | 11/20/2006 | 2300 |
Subject: | SGP/SIRS/E18 - Upwelling SW cable severed |
DataStreams: | sgpsirsE18.00, sgpsirsE18.b1, sgpsirs20sE18.a0 |
Description: | The Upwelling Shortwave signal was exceeding physical limits. Ops reported the upwelling shortwave cable was damaged by rodents. The cable was repaired and returned to service. |
Measurements: | sgpsirs20sE18.a0:
sgpsirsE18.b1:
sgpsirsE18.00:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
11/13/2006 | 0900 | 01/23/2007 | 1930 |
Subject: | SGP/SIRS/C1 - Upwelling SW cable problem |
DataStreams: | sgpsirsC1.00, sgpsirsC1.b1, sgpsirs20sC1.a0 |
Description: | Starting 11/13/2006, the C1 SIRS Upwelling Shortwave (up_short_hemisp) started to show large differences in comparison to co-located E13 SIRS and C1 IRT25m. After much troubleshooting and gnashing of teeth it was discovered that rodents had chewed through the instrument cables at the bottom of the tilt tower. Cables were replaced 01/23/2007 1930GMT. |
Measurements: | sgpsirsC1.b1:
sgpsirsC1.00:
sgpsirs20sC1.a0:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
07/03/2006 | 1509 | 03/06/2007 | 1610 |
Subject: | SGP/SIRS/C1 - Reprocess: Incorrect calibration coefficients |
DataStreams: | sgpsirsC1.00, sgpsirsC1.b1, sgpsirs20sC1.a0 |
Description: | Incorrection calibration coefficients were used in the C1/SIRS datalogger program. The PSP-US (upwelling shortwave global hemispheric), 30943F3 should be 126.93 not 129.93 [W/m2/mV]. |
Measurements: | sgpsirsC1.b1:
sgpsirsC1.00:
sgpsirs20sC1.a0:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/03/2007 | 2005 | 01/23/2007 | 1930 |
Subject: | SGP/SIRS/C1 - Upwelling LW cable problems |
DataStreams: | sgpsirsC1.00, sgpsirsC1.b1, sgpsirs20sC1.a0 |
Description: | Troubleshooting of the upwelling shortwave instrument on Jan 3rd 2007 caused problems with the co-located upwelling longwave hemispheric irradiance Eppley PIR instrument (aka UIR). Data dropouts persisted from this date to the final resolution of both shortwave and longwave instrument problems. Rodents had chewed through the instrument cables. The cables were replaced 01/23/2007 1930GMT. |
Measurements: | sgpsirsC1.b1:
sgpsirsC1.00:
sgpsirs20sC1.a0:
|