DQR ID | Subject | Data Streams Affected |
---|---|---|
D030312.10 | SGP/MWR/C1 - Intermittent Negative Sky Brightness Temperatures | sgp1mwravgC1.c1, sgp5mwravgC1.c1, sgpmwrlosC1.a1, sgpmwrlosC1.b1 |
D040126.3 | SGP/SIRS/E21 - False signal | sgpsirs20sE21.a0, sgpsirsE21.00, sgpsirsE21.b1 |
D040227.3 | SGP/SIRS/E2 - Reprocess: Incorrect shortwave radiometer calibration coefficients | sgpsirsE2.00, sgpsirsE2.b1 |
D040320.2 | SGP/SIRS/E8 - Possible Contamination of DS PSP instrument | sgpsirs20sE8.a0, sgpsirsE8.00, sgpsirsE8.b1 |
D040329.1 | SGP/SIRS/E21 - Instrument logger time problem, Unknown | sgpsirs20sE21.a0, sgpsirsE21.00, sgpsirsE21.b1 |
D040428.1 | TWP/SMET/C1 - Poor Performing Sensor | twpsmet60sC1.b1 |
D040712.3 | SGP/SIRS/E24 - NIP shaded near sunrise | sgpsirs20sE24.a0, sgpsirsE24.b1 |
D040824.2 | TWP/SMET/C2 - Incorrect rainrate equation used. | twpsmet60sC2.b1 |
D040831.3 | SGP/SIRS/E8 - Reprocess: Incorrect shortwave radiometer calibration coefficients | sgpsirsE8.00, sgpsirsE8.b1 |
D040907.1 | SGP/SIRS/C1/E13 - Incorrect calibration coefficients | sgpsirs20sC1.a0, sgpsirs20sE13.a0, sgpsirsC1.00, sgpsirsC1.b1, sgpsirsE13.00, sgpsirsE13.b1 |
D041028.2 | NSA/MFR10M/C2 - No data collected during winter | nsamfr10mC2.a0, nsamfr10mC2.b1 |
D050502.16 | SGP/SIRS/E22 - SWFANAL Data description error | sgp15swfanalsirs1longE22.c1, sgp1swfanalsirs1longE22.c1 |
D050502.2 | SGP/SIRS/C1 - SWFANAL Data description error | sgp15swfanalsirs1longC1.c1, sgp1swfanalsirs1longC1.c1 |
D050722.1 | SGP/MWR/C1 - REPROCESS - Revised Retrieval Coefficients | sgp1mwravgC1.c1, sgp5mwravgC1.c1, sgpmwrlosC1.a1, sgpmwrlosC1.b1, sgpmwrtipC1.a1, sgpqmemwrcolC1.c1 |
D051117.1 | SGP/SIRS/E24 - Reprocess: Incorrect calibration coefficients | sgpsirs20sE24.a0, sgpsirsE24.00, sgpsirsE24.b1 |
D060403.4 | SGP/SIRS/E20 - Instrument noise problem | sgpsirs20sE20.a0, sgpsirsE20.00, sgpsirsE20.b1 |
D060426.8 | TWP/SMET/C3 - ORG data noisy due to degraded ground | twpsmet60sC3.b1 |
D060508.2 | SGP/EBBR/E8 - Sensible and Latent Heat Flux Suspect | sgp15ebbrE8.b1, sgp30ebbrE8.b1, sgp5ebbrE8.b1 |
D060531.6 | SGP/SWATS/E9 - Incorrect reference temperature | sgpswatsE9.b1 |
D060630.10 | SGP/SIRS/E2 - Reprocessed: Longwave Calibration error | sgpsirsE2.b1 |
D060630.11 | SGP/SIRS/E3 - Reprocessed: Longwave Calibration error | sgpsirsE3.b1 |
D060630.12 | SGP/SIRS/E4 - Reprocessed: Longwave Calibration error | sgpsirsE4.b1 |
D060630.13 | SGP/SIRS/E5 - Reprocessed: Longwave Calibration error | sgpsirsE5.b1 |
D060630.14 | SGP/SIRS/E6 - Reprocessed: Longwave Calibration error | sgpsirsE6.b1 |
D060630.15 | SGP/SIRS/E7 - Reprocessed: Longwave Calibration error | sgpsirsE7.b1 |
D060630.16 | SGP/SIRS/E8 - Reprocessed: Longwave Calibration error | sgpsirsE8.b1 |
D060630.17 | SGP/SIRS/E9 - Reprocessed: Longwave Calibration error | sgpsirsE9.b1 |
D060630.18 | SGP/SIRS/E10 - Reprocessed: Longwave Calibration error | sgpsirsE10.b1 |
D060630.19 | SGP/SIRS/E11 - Reprocessed: Longwave Calibration error | sgpsirsE11.b1 |
D060630.21 | SGP/SIRS/E13 - Reprocessed: Longwave Calibration error | sgpsirsE13.b1 |
D060630.22 | SGP/SIRS/E15 - Reprocessed: Longwave Calibration error | sgpsirsE15.b1 |
D060630.23 | SGP/SIRS/E16 - Reprocessed: Longwave Calibration error | sgpsirsE16.b1 |
D060630.24 | SGP/SIRS/E18 - Reprocessed: Longwave Calibration error | sgpsirsE18.b1 |
D060630.25 | SGP/SIRS/E19 - Reprocessed: Longwave Calibration error | sgpsirsE19.b1 |
D060630.26 | SGP/SIRS/E20 - Reprocessed: Longwave Calibration error | sgpsirsE20.b1 |
D060630.27 | SGP/SIRS/E21 - Reprocessed: Longwave Calibration error | sgpsirsE21.b1 |
D060630.28 | SGP/SIRS/E22 - Reprocessed: Longwave Calibration error | sgpsirsE22.b1 |
D060630.29 | SGP/SIRS/E24 - Reprocessed: Longwave Calibration error | sgpsirsE24.b1 |
D060630.30 | SGP/SIRS/E27 - Reprocessed: Longwave Calibration error | sgpsirsE27.b1 |
D060630.8 | SGP/SIRS/C1 - Reprocessed: Longwave Calibration error | sgpsirsC1.b1 |
D060630.9 | SGP/SIRS/E1 - Reprocessed: Longwave Calibration error | sgpsirsE1.b1 |
D060818.11 | SGP/EBBR/E27 - Most Measurements Suspect | sgp15ebbrE27.b1, sgp30ebbrE27.b1, sgp5ebbrE27.b1 |
D060830.1 | SGP/THWAPS/B4 - Reprocess: RH% values 9% High | sgpthwapsB4.b1 |
D060914.1 | NSA/MFR10M/C1 - Channel 415 noise | nsamfr10mC1.a0, nsamfr10mC1.b1 |
D061011.2 | TWP/SMET/C1 - Reprocess: Tipping bucket rain gauge added | twpsmet60sC1.b1 |
D061011.3 | TWP/SMET/C2 - Reprocess: Tipping bucket rain gauge added | twpsmet60sC2.b1 |
D061011.4 | TWP/SMET/C3 - Reprocess: Tipping bucket rain gauge added | twpsmet60sC3.b1 |
D061121.2 | SGP/SIRS/C1 - Upwelling SW cable problem | sgpsirs20sC1.a0, sgpsirsC1.00, sgpsirsC1.b1 |
D061208.1 | SGP/SIRS/E7 - Instrument noise | sgpsirs20sE7.a0, sgpsirsE7.b1 |
D061213.2 | NSA/METTWR/C1 - 40m wind sensor heater failure | nsamettwr4hC1.b1 |
D061214.2 | TWP/SMET/C2 - Barometer failure | twpsmet60sC2.b1 |
D070130.2 | SGP/SIRS/E18 - Noise in upwelling longwave data | sgpsirs20sE18.a0, sgpsirsE18.b1 |
D070306.1 | SGP/SIRS/C1 - Reprocess: Incorrect calibration coefficients | sgpsirs20sC1.a0, sgpsirsC1.00, sgpsirsC1.b1 |
D070320.1 | SGP/SIRS/E22 - Reprocess: Incorrect calibration coefficients | sgpsirs20sE22.a0, sgpsirsE22.00, sgpsirsE22.b1 |
D070411.1 | SGP/SIRS/E3 - Instrument leveling and tracker problem | sgpsirs20sE3.a0, sgpsirsE3.b1 |
D070424.1 | SGP/SIRS/C1 - Upwelling LW cable problems | sgpsirs20sC1.a0, sgpsirsC1.00, sgpsirsC1.b1 |
D070426.1 | SGP/EBBR/E22 - Wind Direction Incorrect | sgp15ebbrE22.b1, sgp30ebbrE22.b1, sgp5ebbrE22.b1 |
D070503.2 | SGP/SWATS/E10 - Incorrect temperature rise | sgpswatsE10.b1 |
D070521.1 | SGP/SMOS/E7 - Wind sensor binding at low wind speeds | sgp1440smosE7.b1, sgp1smosE7.b1, sgp30smosE7.b1 |
D070529.1 | NSA/METTWR/C1 - 20m RH Data Questionable | nsamettwr4hC1.b1 |
D070717.1 | SGP/RL/C1 - Invalid liquid water channel data | sgprlC1.a0 |
D070809.1 | SGP/EBBR/E27 - Multiplexer #2 failure | sgp15ebbrE27.b1, sgp30ebbrE27.b1, sgp5ebbrE27.b1 |
D070917.2 | TWP/AERI/C2 - Reprocess: Incorrect lat/lon/alt | twpaerich1C2.b1, twpaerich2C2.b1, twpaeriengineerC2.b1, twpaerilblcloudsC2.c1, twpaerirawC2.00, twpaerisummaryC2.b1 |
D070927.1 | SGP/SIRS/E20 - Failed tracker and improperly configured tracker | sgpsirs20sE20.a0, sgpsirsE20.b1 |
D071221.2 | SGP/SIRS/E18 - Instrument noise problem | sgpsirs20sE18.a0, sgpsirsE18.b1 |
D080424.2 | SGP/AERI/E14 - Reprocess: Incorrect altitude reported | sgpaerich1E14.b1, sgpaerich2E14.b1, sgpaeriengineerE14.b1, sgpaerisummaryE14.b1 |
D080630.1 | NSA/SKYRAD/C1 - Tracker inoperative | nsaskyrad20sC1.a0, nsaskyrad60sC1.b1 |
D080829.3 | SGP/RL/C1 - Degraded sensitivity in WFOV channels | sgprlC1.a0, sgprlprofmerge1turnC1.c0 |
D951005.4 | SGP/MWR/C1 - Valid LWP > 1mm excluded from 5 min avgs | sgp5mwravgC1.c1 |
Start Date | Start Time | End Date | End Time |
---|---|---|---|
11/17/1999 | 1800 | 07/31/2002 | 2034 |
Subject: | SGP/MWR/C1 - Intermittent Negative Sky Brightness Temperatures |
DataStreams: | sgp1mwravgC1.c1, sgp5mwravgC1.c1, sgpmwrlosC1.a1, sgpmwrlosC1.b1 |
Description: | Several related and recurring problems with the SGP MWRs have been reported dating back to 1999. These problems were due to the occurrence of blackbody signals (in counts) that were half of those expected. The symptoms included noisy data (especially at Purcell), spikes in the data (especially at Vici), negative brightness temperatures, and apparent loss of serial communication between the computer and the radiometer, which results in a self-termination of the MWR program (especially at the CF). Because these all initially appeared to be hardware-related problems, the instrument mentor and SGP site operations personnel (1) repeatedly cleaned and replaced the fiber optic comm. components, (2) swapped radiometers, (3) sent radiometers back to Radiometrics for evaluation (which has not revealed any instrument problems), and (4) reconfigured the computer's operating system. Despite several attempts to isolate and correct it, the problem persisted. It became apparent that some component of the Windows98 configuration conflicted with the DOS-based MWR program or affected the serial port or the contents of the serial port buffer. This problem was finally corrected by upgrading the MWR software with a new Windows-compatible program. |
Measurements: | sgp5mwravgC1.c1:
sgpmwrlosC1.b1:
sgp1mwravgC1.c1:
sgpmwrlosC1.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
10/19/2003 | 0000 | 02/26/2004 | 2359 |
Subject: | SGP/SIRS/E21 - False signal |
DataStreams: | sgpsirs20sE21.a0, sgpsirsE21.00, sgpsirsE21.b1 |
Description: | During clear-sky conditions, downwelling shortwave values spike downward approximately 50 to 200 W/m^2 around 22:15 UTC for about 15 minutes. This problem occurs at about the same time for the same duration each day during the indicated period of the year. This effect is due to a shadow from the Rotating Bird Deterrent (RBD) installed earlier in the year to prevent extensive bird droppings at the site. The RBD is installed at such a location that it will partially shade the downwelling shortwave PSP from 19 October to 23 February of the year. |
Measurements: | sgpsirsE21.00:
sgpsirs20sE21.a0:
sgpsirsE21.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
02/12/2004 | 1612 | 03/25/2004 | 1600 |
Subject: | SGP/SIRS/E2 - Reprocess: Incorrect shortwave radiometer calibration coefficients |
DataStreams: | sgpsirsE2.00, sgpsirsE2.b1 |
Description: | During the pyrgeometer instrument (PIR) changout a datalogger program was loaded with incorrect calibration coefficients for the shortwave instruments. The affected measurements were : downwelling diffuse (DD), upwelling shortwave(US), direct normal (NIP) and downwelling shortwave(DS) 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)*118.11 US(corrected) = (US/113.19)*118.21 NIP(corrected)= (NIP/120.17)*119.08 DS(corrected) = (DS/118.46)*117.33 |
Measurements: | sgpsirsE2.b1:
sgpsirsE2.00:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
03/15/2004 | 1500 | 03/31/2004 | 1200 |
Subject: | SGP/SIRS/E8 - Possible Contamination of DS PSP instrument |
DataStreams: | sgpsirs20sE8.a0, sgpsirsE8.00, sgpsirsE8.b1 |
Description: | Downwelling hemispheric shortwave values drop at about 1500 GMT under clear sky conditions, typically from about 14:00GMT to 16:00GMT. This may be due to a dirty PSP but maintenance on 03/23/04 18:11 GMT revealed no more than typical light dust. The problem was essentially undetectable by 03/31/04 12:00. The time of day that the problem exists appears to be an exagerated PSP cosine response. No obvious reason presents why the problem appeared and then disappeared within this two week period. |
Measurements: | sgpsirsE8.00:
sgpsirs20sE8.a0:
sgpsirsE8.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
03/21/2004 | 1200 | 03/24/2004 | 0200 |
Subject: | SGP/SIRS/E21 - Instrument logger time problem, Unknown |
DataStreams: | sgpsirs20sE21.a0, sgpsirsE21.00, sgpsirsE21.b1 |
Description: | Values of diffuse hemispheric shortwave radiation differ from derived values by at most 70 Wm^(-2). The incident appears to be isolated to 3/21, 3/22, and 3/23. An estimation of solar noon using downwelling shortwave hemispheric irradiance from the PSP shows solar noon to oocur at around 1845GMT on 3/21. Calculated solar noon occurs at E21 at 1831GMT for 3/21/2004. There appears to be a time discrepancy in the datalogger for these dates. 04/01 is the next date with enough sun to determine solar noon and compare to calculated. The data from this date appears correct. Ronald Reed [rreed@ops.sgp.arm.gov] reports the logger did not receive any reportable time updates during the late March time period. We don't know what happened during these three dates but from 3/24 on data looks acceptable. |
Measurements: | sgpsirsE21.00:
sgpsirs20sE21.a0:
sgpsirsE21.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/23/2004 | 0000 | 01/19/2005 | 1530 |
Subject: | TWP/SMET/C1 - Poor Performing Sensor |
DataStreams: | twpsmet60sC1.b1 |
Description: | On 4/23/2004 condensation was found inside the target area of the ORG lens. A spare was sent and installed but did not solve the problem of high background voltage values causing rainrate values to be recorded during no rainfall. Values range anywhere from 0.06 to 0.12 mm/hr. A new Optical Rain Gage was installed on 01/19/2005 @ 13:30 GMT alleviating the high background voltage values that lead to consistent rainfall rates of around 0.11 to 0.15 mm/hr on a consistent basis. The formula used to calculate rainfall rates from the new Optical Rain Gage is: RR (mm/hr) = 25(V^1.87) - 0.15. Older model formula = 20(V^2) - 0.05 The two formulas result in comparable data. |
Measurements: | twpsmet60sC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/17/2003 | 1200 | 05/20/2003 | 1300 |
07/26/2003 | 1300 | 09/06/2003 | 1200 |
04/08/2004 | 1200 | 05/20/2004 | 1300 |
07/26/2004 | 1300 | 09/06/2004 | 1200 |
Subject: | SGP/SIRS/E24 - NIP shaded near sunrise |
DataStreams: | sgpsirs20sE24.a0, sgpsirsE24.b1 |
Description: | The NIP is shaded by the EF laptop computer enclosure near sunrise during parts of the Spring and Summer. This has occurred from 04/08 to 05/20 and from 07/26 to 09/06 every year since 2001 and will occur during these date ranges in the future as well. The shading occurs for a few minutes each day between 1200 and 1300 GMT depending on the time of the year. For the early dates, shading occurs a little after 1200 GMT and by 05/20 shading happens nearer to 1300 GMT. In late July the shading occurs near 1300 GMT and closer to 1200 GMT by 09/06. |
Measurements: | sgpsirs20sE24.a0:
sgpsirsE24.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
07/07/2004 | 0137 | 08/17/2004 | 2157 |
Subject: | TWP/SMET/C2 - Incorrect rainrate equation used. |
DataStreams: | twpsmet60sC2.b1 |
Description: | There are two different Optical Raingages in use at the TWP sites. The incorrect equation was used at this site. The incorrect equation is (25*(V^1.87)) - 0.15. The correct equation is (20*(V^2)) - 0.05. The correct equation was installed. |
Measurements: | twpsmet60sC2.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
02/10/2004 | 1825 | 04/20/2004 | 1825 |
Subject: | SGP/SIRS/E8 - Reprocess: Incorrect shortwave radiometer calibration coefficients |
DataStreams: | sgpsirsE8.00, sgpsirsE8.b1 |
Description: | 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) 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)*116.37 US(corrected) = (US/113.19)*121.78 NIP(corrected)= (NIP/120.17)*122.47 DS(corrected) = (DS/118.46)*122.34 |
Measurements: | sgpsirsE8.00:
sgpsirsE8.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
08/27/2004 | 1830 | 09/07/2004 | 2130 |
Subject: | SGP/SIRS/C1/E13 - Incorrect calibration coefficients |
DataStreams: | sgpsirs20sC1.a0, sgpsirs20sE13.a0, sgpsirsC1.00, sgpsirsC1.b1, sgpsirsE13.00, sgpsirsE13.b1 |
Description: | After the DIR changeout on 8/27, the DLH measurements at the central facility vary significantly between pyrgeometers by as much as 65 Wm^(-2). It was discovered that the two downwelling pyrgeometers destined for C1 and E13 may have been swapped during installation. The instrument mentor is unsure of applied calibration coefficients during this DQR's time period. Backing out new downwelling longwave irradiances would be difficult in this case. Fortunately, the problem period is less than a fortnight. |
Measurements: | sgpsirsE13.b1:
sgpsirsC1.b1:
sgpsirsC1.00:
sgpsirs20sE13.a0:
sgpsirs20sC1.a0:
sgpsirsE13.00:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
11/02/2001 | 2233 | 03/21/2002 | 2333 |
04/27/2002 | 2203 | 03/18/2003 | 2101 |
11/11/2003 | 2003 | 04/04/2004 | 0402 |
11/17/2004 | 2202 | 02/16/2005 | 2020 |
11/25/2005 | 1902 | 03/14/2006 | 2202 |
11/21/2006 | 2202 | 02/25/2007 | 2302 |
11/24/2007 | 2000 | 02/03/2008 | 0302 |
Subject: | NSA/MFR10M/C2 - No data collected during winter |
DataStreams: | nsamfr10mC2.a0, nsamfr10mC2.b1 |
Description: | The sun does not rise above the horizon at the NSA sites between November and January each year. During this time period, the MFR instruments are removed and returned to PNNL for maintenance and calibration. The instruments are generally re-installed in March. |
Measurements: | nsamfr10mC2.a0:
nsamfr10mC2.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
11/09/1995 | 0000 | 12/04/2003 | 2359 |
Subject: | SGP/SIRS/E22 - SWFANAL Data description error |
DataStreams: | sgp15swfanalsirs1longE22.c1, sgp1swfanalsirs1longE22.c1 |
Description: | The long name attribute for the cloud effect fields incorrectly defines the cloud effect to be the difference between the clearskyfit and measured values: "Difference: ***fluxdn_clearskyfit - ***fluxdn_measured (***fcg)" ; The cloud effects are correctly calculated by subtracting the irradiance calculated in the clear sky fit from the measured irradiance. "Difference: ***fluxdn_measured - ***fluxdn_clearskyfit (***fcg)" ; NOTE: this is just a documentation error. The data are correctly calculated. |
Measurements: | sgp15swfanalsirs1longE22.c1:
sgp1swfanalsirs1longE22.c1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
03/25/1997 | 0000 | 12/10/2003 | 2359 |
Subject: | SGP/SIRS/C1 - SWFANAL Data description error |
DataStreams: | sgp15swfanalsirs1longC1.c1, sgp1swfanalsirs1longC1.c1 |
Description: | The long name attribute for the cloud effect fields incorrectly defines the cloud effect to be the difference between the clearskyfit and measured values: "Difference: ***fluxdn_clearskyfit - ***fluxdn_measured (***fcg)" ; The cloud effects are correctly calculated by subtracting the irradiance calculated in the clear sky fit from the measured irradiance. "Difference: ***fluxdn_measured - ***fluxdn_clearskyfit (***fcg)" ; NOTE: this is just a documentation error. The data are correctly calculated. |
Measurements: | sgp1swfanalsirs1longC1.c1:
sgp15swfanalsirs1longC1.c1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/16/2002 | 2000 | 06/28/2005 | 2300 |
Subject: | SGP/MWR/C1 - REPROCESS - Revised Retrieval Coefficients |
DataStreams: | sgp1mwravgC1.c1, sgp5mwravgC1.c1, sgpmwrlosC1.a1, sgpmwrlosC1.b1, sgpmwrtipC1.a1, sgpqmemwrcolC1.c1 |
Description: | IN THE BEGINNING (June 1992), the retrieval coefficients used to derive the precipitable water vapor (PWV) and liquid water path (LWP) from the MWR brightness temperatures were based on the Liebe and Layton (1987) water vapor and oxygen absorption model and the Grant (1957) liquid water absorption model. Following the SHEBA experience, revised retrievals based on the more recent Rosenkranz (1998) water vapor and oxygen absorption models and the Liebe (1991) liquid waer absorption model were developed. The Rosenkranz water vapor absorption model resulted a 2 percent increase in PWV relative to the earlier Liebe and Layton model. The Liebe liquid water absorption model decreased the LWP by 10% relative to the Grant model. However, the increased oxygen absorption caused a 0.02-0.03 mm (20-30 g/m2) reduction in LWP, which was particularly significant for low LWP conditions (i.e. thin clouds encountered at SHEBA). Recently, it has been shown (Liljegren, Boukabara, Cady-Pereira, and Clough, TGARS v. 43, pp 1102-1108, 2005) that the half-width of the 22 GHz water vapor line from the HITRAN compilation, which is 5 percent smaller than the Liebe and Dillon (1969) half-width used in Rosenkranz (1998), provided a better fit to the microwave brightness temperature measurements at 5 frequencies in the range 22-30 GHz, and yielded more accurate retrievals. Accordingly, revised MWR retrieval coefficients have been developed using MONORTM, which utilizes the HITRAN compilation for its spectroscopic parameters. These new retrievals provide 3 percent less PWV and 2.6 percent greater LWP than the previous retrievals based on Rosenkranz (1998). Although the MWR data will be reprocessed to apply the new monortm-based retrievals, for most purposes it will be sufficient to correct the data using the following factors: PWV_MONORTM = 0.9695 * PWV_ROSENKRANZ LWP_MONORTM = 1.026 * LWP_ROSENKRANZ The Rosenkranz-based retrieval coefficients became active as follows (BCR 456): SGP/C1 (Lamont) 4/16/2002, 2000 SGP/B1 (Hillsboro) 4/12/2002, 1600 SGP/B4 (Vici) 4/15/2002, 2300 SGP/B5 (Morris) 4/15/2002, 2300 SGP/B6 (Purcell) 4/16/2002, 2200 SGP/E14(Lamont) 4/16/2002, 0000 NSA/C1 (Barrow) 4/25/2002, 1900 NSA/C2 (Atqasuk) 4/18/2002, 1700 TWP/C1 (Manus) 5/04/2002, 0200 TWP/C2 (Nauru) 4/27/2002, 0600 TWP/C3 (Darwin) inception The MONORTM-based retrieval coefficients became active as follows (BCR 984): SGP/C1 (Lamont) 6/28/2005, 2300 SGP/B1 (Hillsboro) 6/24/2005, 2100 SGP/B4 (Vici) 6/24/2005, 2100 SGP/B5 (Morris) 6/24/2005, 2100 SGP/B6 (Purcell) 6/24/2005, 1942 SGP/E14(Lamont) 6/28/2005, 2300 NSA/C1 (Barrow) 6/29/2005, 0000 NSA/C2 (Atqasuk) 6/29/2005, 0000 TWP/C1 (Manus) 6/30/2005, 2100 TWP/C2 (Nauru) 6/30/2005, 2100 TWP/C3 (Darwin) 6/30/2005, 2100 PYE/M1 (Pt. Reyes) 4/08/2005, 1900** ** At Pt. Reyes, the original retrieval coefficients implemented in March 2005 were based on a version of the Rosenkranz model that had been modified to use the HITRAN half-width at 22 GHz and to be consistent with the water vapor continuum in MONORTM. These retrievals yield nearly identical results to the MONORTM retrievals. Therefore the Pt. Reyes data prior to 4/08/2005 may not require reprocessing. |
Measurements: | sgpmwrtipC1.a1:
sgp5mwravgC1.c1:
sgpmwrlosC1.b1:
sgp1mwravgC1.c1:
sgpqmemwrcolC1.c1:
sgpmwrlosC1.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
08/18/2005 | 1415 | 11/23/2005 | 1706 |
Subject: | SGP/SIRS/E24 - Reprocess: Incorrect calibration coefficients |
DataStreams: | sgpsirs20sE24.a0, sgpsirsE24.00, sgpsirsE24.b1 |
Description: | Calibration coefficient for the downwelling diffuse measurement (8-48 B&W Eppley instrument) was incorrect after the instrument replacement 8/18/2005. Affected downwelling diffuse irradiance data can be corrected: Irr(corr) = Irr(uncorr) / 122.85 * 112.85 (or a overall multiplier of .9186) |
Measurements: | sgpsirsE24.00:
sgpsirs20sE24.a0:
sgpsirsE24.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
08/20/2005 | 1930 | 04/12/2006 | 2040 |
Subject: | SGP/SIRS/E20 - Instrument noise problem |
DataStreams: | sgpsirs20sE20.a0, sgpsirsE20.00, sgpsirsE20.b1 |
Description: | Afer recovery from lightening strike the upwelling longwave SIRS Eppley PIR (UIR) has had noise on both dome and case thermistor measurements. On 4/12/2006 techs replaced defective j-panel at base of tower. |
Measurements: | sgpsirsE20.b1:
sgpsirs20sE20.a0:
sgpsirsE20.00:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
12/01/2005 | 0000 | 08/24/2006 | 2359 |
Subject: | TWP/SMET/C3 - ORG data noisy due to degraded ground |
DataStreams: | twpsmet60sC3.b1 |
Description: | SMET Rain Data began to be noisy during December 2005 and the problem slowly became worse over time so that in February 2006 the ORG was reporting with a constant background value of around 0.10 mm/hr rain rate. ORG voltage showed a near constant value above the 85mV threshold. The ground for the ORG had become degraded and was lost due to corrosion. |
Measurements: | twpsmet60sC3.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/22/2006 | 1030 | 05/31/2006 | 0030 |
Subject: | SGP/EBBR/E8 - Sensible and Latent Heat Flux Suspect |
DataStreams: | sgp15ebbrE8.b1, sgp30ebbrE8.b1, sgp5ebbrE8.b1 |
Description: | The left humidity sensor produced large spikes frequently. This resulted in incorrect measurements of vapor pressure gradient and thus calculations of sensible and latent heat flux. |
Measurements: | sgp30ebbrE8.b1:
sgp5ebbrE8.b1:
sgp15ebbrE8.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/24/2006 | 1600 | 06/01/2006 | 1600 |
Subject: | SGP/SWATS/E9 - Incorrect reference temperature |
DataStreams: | sgpswatsE9.b1 |
Description: | The reference temperature was incorrect resulting in incorrect results for soil moisture measurements. |
Measurements: | sgpswatsE9.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
02/12/2004 | 1630 | 02/23/2005 | 1615 |
Subject: | SGP/SIRS/E2 - Reprocessed: Longwave Calibration error |
DataStreams: | sgpsirsE2.b1 |
Description: | Modified pyrgeometer calibration procedures were implemented beginning in February 2004. 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 have been reprocessed to remove the calibration bias. The reprocessed 60 second averaged data are based on 3 instantaneous 20 second data records rather than on 60 1 second instanteous data records. Still, these data are considered far superior to the originally processed data. The reprocessed data were archived in September 2006. |
Measurements: | sgpsirsE2.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
03/10/2004 | 1715 | 02/08/2006 | 1730 |
Subject: | SGP/SIRS/E3 - Reprocessed: Longwave Calibration error |
DataStreams: | sgpsirsE3.b1 |
Description: | Modified pyrgeometer calibration procedures were implemented beginning in March 2004. 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 have been reprocessed to remove the calibration bias. The reprocessed 60 second averaged data are based on 3 instantaneous 20 second data records rather than on 60 1 second instantaneous data records. Still, these data are considered far superior to the originally processed data. The reprocessed data were archived in August 2006. |
Measurements: | sgpsirsE3.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
03/10/2004 | 1720 | 02/22/2006 | 1615 |
Subject: | SGP/SIRS/E4 - Reprocessed: Longwave Calibration error |
DataStreams: | sgpsirsE4.b1 |
Description: | Modified pyrgeometer calibration procedures were implemented beginning in March 2004. 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 have been reprocessed to remove the calibration bias. The reprocessed 60 second averaged data are based on 3 instantaneous 20 second data records rather than on 60 1 second instantaneous data records. Still, these data are considered far superior to the originally processed data. The reprocessed data were archived in October 2006. |
Measurements: | sgpsirsE4.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
03/10/2004 | 2030 | 02/22/2006 | 1817 |
Subject: | SGP/SIRS/E5 - Reprocessed: Longwave Calibration error |
DataStreams: | sgpsirsE5.b1 |
Description: | Modified pyrgeometer calibration procedures were implemented beginning in March 2004. 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 have been reprocessed to remove the calibration bias. The reprocessed 60 second averaged data are based on 3 instantaneous 20 second data records rather than on 60 1 second instantaneous data records. Still, these data are considered far superior to the originally processed data. The reprocessed data were archived in October 2006. |
Measurements: | sgpsirsE5.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
03/11/2004 | 1610 | 02/09/2006 | 1553 |
Subject: | SGP/SIRS/E6 - Reprocessed: Longwave Calibration error |
DataStreams: | sgpsirsE6.b1 |
Description: | Modified pyrgeometer calibration procedures were implemented beginning in March 2004. 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 have been reprocessed to remove the calibration bias. The reprocessed 60 second averaged data are based on 3 instantaneous 20 second data records rather than on 60 1 second instantaneous data records. Still, these data are considered far superior to the originally processed data. The reprocessed data were archived in October 2006. |
Measurements: | sgpsirsE6.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
02/20/2004 | 2000 | 02/07/2006 | 2005 |
Subject: | SGP/SIRS/E7 - Reprocessed: Longwave Calibration error |
DataStreams: | sgpsirsE7.b1 |
Description: | Modified pyrgeometer calibration procedures were implemented beginning in February 2004. 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 have been reprocessed to remove the calibration bias. The reprocessed 60 second averaged data are based on 3 instantaneous 20 second data records rather than on 60 1 second instantaneous data records. Still, these data are considered far superior to the originally processed data. The reprocessed data were archived in October 2006. |
Measurements: | sgpsirsE7.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
02/10/2004 | 1845 | 02/21/2006 | 1840 |
Subject: | SGP/SIRS/E8 - Reprocessed: Longwave Calibration error |
DataStreams: | sgpsirsE8.b1 |
Description: | Modified pyrgeometer calibration procedures were implemented beginning in February 2004. 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 have been reprocessed to remove the calibration bias. The reprocessed 60 second averaged data are based on 3 instantaneous 20 second data records rather than on 60 1 second instanteous data records. Still, these data are considered far superior to the originally processed data. The reprocessed data were archived in September 2006. |
Measurements: | sgpsirsE8.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
12/17/2003 | 1640 | 02/07/2006 | 1730 |
Subject: | SGP/SIRS/E9 - Reprocessed: Longwave Calibration error |
DataStreams: | sgpsirsE9.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 have been reprocessed to remove the calibration bias. The reprocessed 60 second averaged data are based on 3 instantaneous 20 second data records rather than on 60 1 second instanteous data records. Still, these data are considered far superior to the originally processed data. The reprocessed data were archived in October 2006. |
Measurements: | sgpsirsE9.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
02/20/2004 | 1730 | 02/07/2006 | 2130 |
Subject: | SGP/SIRS/E10 - Reprocessed: Longwave Calibration error |
DataStreams: | sgpsirsE10.b1 |
Description: | Modified pyrgeometer calibration procedures were implemented beginning in February 2004. 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 have been reprocessed to remove the calibration bias. The reprocessed 60 second averaged data are based on 3 instantaneous 20 second data records rather than on 60 1 second instantaneous data records. Still, these data are considered far superior to the originally processed data. The reprocessed data were archived in August 2006. |
Measurements: | sgpsirsE10.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
02/17/2004 | 1753 | 02/14/2006 | 2016 |
Subject: | SGP/SIRS/E11 - Reprocessed: Longwave Calibration error |
DataStreams: | sgpsirsE11.b1 |
Description: | Modified pyrgeometer calibration procedures were implemented beginning in February 2004. 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 have been reprocessed to remove the calibration bias. The reprocessed 60 second averaged data are based on 3 instantaneous 20 second data records rather than on 60 1 second instantaneous data records. Still, these data are considered far superior to the originally processed data. The reprocessed data were archived in August 2006. |
Measurements: | sgpsirsE11.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
12/11/2003 | 1935 | 02/16/2006 | 1905 |
Subject: | SGP/SIRS/E13 - Reprocessed: Longwave Calibration error |
DataStreams: | sgpsirsE13.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 have been reprocessed to remove the calibration bias. The reprocessed 60 second averaged data are based on 3 instantaneous 20 second data records rather than on 60 1 second instantaneous data records. Still, these data are considered far superior to the originally processed data. The reprocessed data were archived in October 2006. |
Measurements: | sgpsirsE13.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
07/22/2003 | 1650 | 02/14/2006 | 1806 |
Subject: | SGP/SIRS/E15 - Reprocessed: Longwave Calibration error |
DataStreams: | sgpsirsE15.b1 |
Description: | Modified pyrgeometer calibration procedures were implemented beginning in July 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 have been reprocessed to remove the calibration bias. The reprocessed 60 second averaged data are based on 3 instantaneous 20 second data records rather than on 60 1 second instantaneous data records. Still, these data are considered far superior to the originally processed data. The reprocessed data were archived in October 2006. |
Measurements: | sgpsirsE15.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
07/23/2003 | 1605 | 02/15/2006 | 1533 |
Subject: | SGP/SIRS/E16 - Reprocessed: Longwave Calibration error |
DataStreams: | sgpsirsE16.b1 |
Description: | Modified pyrgeometer calibration procedures were implemented beginning in July 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 have been reprocessed to remove the calibration bias. The reprocessed 60 second averaged data are based on 3 instantaneous 20 second data records rather than on 60 1 second instantaneous data records. Still, these data are considered far superior to the originally processed data. The reprocessed data were archived in October 2006. |
Measurements: | sgpsirsE16.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
07/22/2003 | 2200 | 02/14/2006 | 2100 |
Subject: | SGP/SIRS/E18 - Reprocessed: Longwave Calibration error |
DataStreams: | sgpsirsE18.b1 |
Description: | Modified pyrgeometer calibration procedures were implemented beginning in July 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 have been reprocessed to remove the calibration bias. The reprocessed 60 second averaged data are based on 3 instantaneous 20 second data records rather than on 60 1 second instantaneous data records. Still, these data are considered far superior to the originally processed data. The reprocessed data were archived in October 2006. |
Measurements: | sgpsirsE18.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
07/24/2003 | 1600 | 02/16/2006 | 1558 |
Subject: | SGP/SIRS/E19 - Reprocessed: Longwave Calibration error |
DataStreams: | sgpsirsE19.b1 |
Description: | Modified pyrgeometer calibration procedures were implemented beginning in July 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 have been reprocessed to remove the calibration bias. The reprocessed 60 second averaged data are based on 3 instantaneous 20 second data records rather than on 60 1 second instantaneous data records. Still, these data are considered far superior to the originally processed data. The reprocessed data were archived in October 2006. |
Measurements: | sgpsirsE19.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
07/23/2003 | 2100 | 02/15/2006 | 2030 |
Subject: | SGP/SIRS/E20 - Reprocessed: Longwave Calibration error |
DataStreams: | sgpsirsE20.b1 |
Description: | Modified pyrgeometer calibration procedures were implemented beginning in July 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 have been reprocessed to remove the calibration bias. The reprocessed 60 second averaged data are based on 3 instantaneous 20 second data records rather than on 60 1 second instantaneous data records. Still, these data are considered far superior to the originally processed data. The reprocessed data were archived in November 2006. |
Measurements: | sgpsirsE20.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
07/23/2003 | 1520 | 02/15/2006 | 1515 |
Subject: | SGP/SIRS/E21 - Reprocessed: Longwave Calibration error |
DataStreams: | sgpsirsE21.b1 |
Description: | Modified pyrgeometer calibration procedures were implemented beginning in July 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 have been reprocessed to remove the calibration bias. The reprocessed 60 second averaged data are based on 3 instantaneous 20 second data records rather than on 60 1 second instantaneous data records. Still, these data are considered far superior to the originally processed data. The reprocessed data were archived in November 2006. |
Measurements: | sgpsirsE21.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
07/23/2003 | 1830 | 02/15/2006 | 1741 |
Subject: | SGP/SIRS/E22 - Reprocessed: Longwave Calibration error |
DataStreams: | sgpsirsE22.b1 |
Description: | Modified pyrgeometer calibration procedures were implemented beginning in July 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 have been reprocessed to remove the calibration bias. The reprocessed 60 second averaged data are based on 3 instantaneous 20 second data records rather than on 60 1 second instantaneous data records. Still, these data are considered far superior to the originally processed data. The reprocessed data were archived in August 2006. |
Measurements: | sgpsirsE22.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
07/24/2003 | 1640 | 02/16/2006 | 1705 |
Subject: | SGP/SIRS/E24 - Reprocessed: Longwave Calibration error |
DataStreams: | sgpsirsE24.b1 |
Description: | Modified pyrgeometer calibration procedures were implemented beginning in July 2004. 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 have been reprocessed to remove the calibration bias. The reprocessed 60 second averaged data are based on 3 instantaneous 20 second data records rather than on 60 1 second instantaneous data records. Still, these data are considered far superior to the originally processed data. The reprocessed data were archived in October 2006. |
Measurements: | sgpsirsE24.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
05/16/2003 | 0002 | 02/15/2006 | 1750 |
Subject: | SGP/SIRS/E27 - Reprocessed: Longwave Calibration error |
DataStreams: | sgpsirsE27.b1 |
Description: | Modified pyrgeometer calibration procedures were implemented beginning in May 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 have been reprocessed to remove the calibration bias. The reprocessed 60 second averaged data are based on 3 instantaneous 20 second data records rather than on 60 1 second instantaneous data records. Still, these data are considered far superior to the originally processed data. The reprocessed data were archived in October 2006. |
Measurements: | sgpsirsE27.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
12/11/2003 | 1950 | 02/16/2006 | 1901 |
Subject: | SGP/SIRS/C1 - Reprocessed: Longwave Calibration error |
DataStreams: | sgpsirsC1.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 have been reprocessed to remove the calibration bias. The reprocessed 60 second averaged data are based on 3 instantaneous 20 second data records rather than on 60 1 second instantaneous data records. Still, these data are considered far superior to the originally processed data. The reprocessed data were archived in October 2006. |
Measurements: | sgpsirsC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
02/10/2004 | 2055 | 02/21/2006 | 2007 |
Subject: | SGP/SIRS/E1 - Reprocessed: Longwave Calibration error |
DataStreams: | sgpsirsE1.b1 |
Description: | Modified pyrgeometer calibration procedures were implemented beginning in February 2004. 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 have been reprocessed to remove the calibration bias. The reprocessed 60 second averaged data are based on 3 instantaneous 20 second data records rather than on 60 1 second instantaneous data records. Still, these data are considered far superior to the originally processed data. The reprocessed data were archived in October 2006. |
Measurements: | sgpsirsE1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/26/2006 | 1830 | 08/17/2006 | 1730 |
Subject: | SGP/EBBR/E27 - Most Measurements Suspect |
DataStreams: | sgp15ebbrE27.b1, sgp30ebbrE27.b1, sgp5ebbrE27.b1 |
Description: | The wrong EBBR program was used at this site. Therefore, most of the measurements are suspect. Note: Mentor reports reprocessing will not correct this problem. |
Measurements: | sgp5ebbrE27.b1:
sgp30ebbrE27.b1:
sgp15ebbrE27.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
07/05/2006 | 1825 | 09/26/2006 | 0000 |
Subject: | SGP/THWAPS/B4 - Reprocess: RH% values 9% High |
DataStreams: | sgpthwapsB4.b1 |
Description: | After replacement of the THWAPS T/RH sensor the span was incorrectly set to 0-100 instead of 0-110. This caused the RH values to be 9% higher than actual values. |
Measurements: | sgpthwapsB4.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
09/06/2006 | 0000 | 11/22/2006 | 2359 |
Subject: | NSA/MFR10M/C1 - Channel 415 noise |
DataStreams: | nsamfr10mC1.a0, nsamfr10mC1.b1 |
Description: | There are some very minor downward spikes in the 415 channel that were first noticed in the daytime data on 9/7/2006. They occur throughout Sept and less into Oct/Nov. The instrument was pulled on 11/22 and will be examined over the winter. The spikes really are very minor, and at times only appear as minor bulges when the plot is expanded to a very large scale. |
Measurements: | nsamfr10mC1.b1:
nsamfr10mC1.a0:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
10/09/1996 | 0000 | 10/17/2006 | 0000 |
Subject: | TWP/SMET/C1 - Reprocess: Tipping bucket rain gauge added |
DataStreams: | twpsmet60sC1.b1 |
Description: | A tipping bucket rain gauge was added to the TWP.C1 SMET suite of instruments on 20061017. Effective 20060926, two new variables (count and rain amount) were added to the end of the twpsmet60sC1.b1 datastream. Between 9/26 and 10/17, the data for these two variables are filled with zeros. Users should not use the data during this period as the zeros are not representative of the rain fall at the site. When reprocessing of this datastream occurs these variables will be added for the 19961009-20060926 and data from 19961009-20061017 will be filled with -9999 (missing). |
Measurements: | twpsmet60sC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
10/21/1998 | 0000 | 11/29/2006 | 2014 |
Subject: | TWP/SMET/C2 - Reprocess: Tipping bucket rain gauge added |
DataStreams: | twpsmet60sC2.b1 |
Description: | A tipping bucket rain gauge was added to the TWP.C2 SMET suite of instruments on 20061129. Effective 20060926, two new variables (count and rain amount) were added to the end of the twpsmet60sC2.b1 datastream. Between 9/26 and 11/29, the data for these two variables are filled with zeros. Users should not use the data during this period as the zeros are not representative of the rain fall at the site. When reprocessing of this datastream occurs these variables will be added for the 19981021-20060926 and data from 19981021-20061129 will be filled with -9999 (missing). |
Measurements: | twpsmet60sC2.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
03/12/2002 | 0000 | 09/26/2006 | 1435 |
Subject: | TWP/SMET/C3 - Reprocess: Tipping bucket rain gauge added |
DataStreams: | twpsmet60sC3.b1 |
Description: | A tipping bucket rain gauge was added to the SMET suite of instruments effective 20060926. Two new variables (count and rain amount) were added at the end of the twpsmet60sC1.b1 datastream. When reprocessing of this datastream occurs these variables will be added with -9999 (missing) as the value for dates prior to gauge installation. |
Measurements: | twpsmet60sC3.b1:
|
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: | sgpsirs20sC1.a0, sgpsirsC1.00, sgpsirsC1.b1 |
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 |
---|---|---|---|
10/31/2006 | 0600 | 12/12/2006 | 2105 |
Subject: | SGP/SIRS/E7 - Instrument noise |
DataStreams: | sgpsirs20sE7.a0, sgpsirsE7.b1 |
Description: | Beginning around 10/31, the E7 UIR experienced an increasingly noisy signal. The thermopile signal was noisy, but case and dome thermistors are well behaved. Maintenance reseated the UIR cable connections on 12/12/2006 which effectively eliminated the UIR noise. The thermopile data from the upwelling pyrgeometer is noisy with resulting irradiance variations of up to 5 W/m2, but doesn't appear to have a bias. |
Measurements: | sgpsirs20sE7.a0:
sgpsirsE7.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
11/01/2006 | 0000 | 05/22/2007 | 2347 |
Subject: | NSA/METTWR/C1 - 40m wind sensor heater failure |
DataStreams: | nsamettwr4hC1.b1 |
Description: | The 40m wind direction became frozen at times. The values from the sensor were flat-lined (stdev = 0) much of the time and did not match sensors from other levels. |
Measurements: | nsamettwr4hC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
12/07/2006 | 1941 | 01/23/2007 | 0023 |
Subject: | TWP/SMET/C2 - Barometer failure |
DataStreams: | twpsmet60sC2.b1 |
Description: | The barometer began experiencing problems with noise resulting in incorrect data. The problem becames worse over time; after 12/19/2006 @0151 GMT the barometer data is completely missing. The barometer was replaced. |
Measurements: | twpsmet60sC2.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/18/2007 | 2230 | 07/24/2007 | 1400 |
Subject: | SGP/SIRS/E18 - Noise in upwelling longwave data |
DataStreams: | sgpsirs20sE18.a0, sgpsirsE18.b1 |
Description: | After restart due to ice storm the upwelling longwave case and dome thermistors experienced intermittent noise. Last seen 7/24/2007, the noise is intermittent and can last several days. When noise is not apparent, upwelling longwave measurements appear normal. Only using upwelling longwave data that has been processed with ARMs qcrad VAP during this time period. Or, disregard upwelling longwave data during this time. |
Measurements: | sgpsirs20sE18.a0:
sgpsirsE18.b1:
|
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: | sgpsirs20sC1.a0, sgpsirsC1.00, sgpsirsC1.b1 |
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 |
---|---|---|---|
07/06/2006 | 1722 | 04/12/2007 | 1810 |
Subject: | SGP/SIRS/E22 - Reprocess: Incorrect calibration coefficients |
DataStreams: | sgpsirs20sE22.a0, sgpsirsE22.00, sgpsirsE22.b1 |
Description: | NIP (short_direct_normal) 29541E6 had an incorrect calibration coefficient in the logger program. 128.97 should have been 126.67 [W/m2/mV]. |
Measurements: | sgpsirs20sE22.a0:
sgpsirsE22.b1:
sgpsirsE22.00:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
10/23/2006 | 0000 | 04/18/2007 | 1820 |
Subject: | SGP/SIRS/E3 - Instrument leveling and tracker problem |
DataStreams: | sgpsirs20sE3.a0, sgpsirsE3.b1 |
Description: | Asymmetry between measured downwelling shortwave and derived downwelling shortwave hemispheric in the afternoon began late in fall and became more apparent as the sun moved higher in spring. This can happen when the PSP is unlevel or when the NIP is not tracking well. The PSP level was corrected and the clock on tracker was reset. Mentor suspects PSP was unlevel during this time range causing the discrepancy in measured vs. calculated downwelling shortwave hemispheric data. |
Measurements: | sgpsirs20sE3.a0:
sgpsirsE3.b1:
|
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: | sgpsirs20sC1.a0, sgpsirsC1.00, sgpsirsC1.b1 |
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:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/16/2007 | 0400 | 04/26/2007 | 1630 |
Subject: | SGP/EBBR/E22 - Wind Direction Incorrect |
DataStreams: | sgp15ebbrE22.b1, sgp30ebbrE22.b1, sgp5ebbrE22.b1 |
Description: | Wind direction was flat-lining at 135 degrees and occasionally changed to 0.4 degrees. |
Measurements: | sgp30ebbrE22.b1:
sgp5ebbrE22.b1:
sgp15ebbrE22.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
05/03/2007 | 0000 | 05/15/2007 | 2100 |
06/20/2007 | 0000 | 08/22/2007 | 1500 |
Subject: | SGP/SWATS/E10 - Incorrect temperature rise |
DataStreams: | sgpswatsE10.b1 |
Description: | All the temperature rise values were incorrect (trise_W, trise_E). Soil moisture variables are also incorrect due to the incorrect T-rise values. Soil temperature measurements are not affected. |
Measurements: | sgpswatsE10.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
05/21/2007 | 0000 | 10/30/2007 | 1715 |
Subject: | SGP/SMOS/E7 - Wind sensor binding at low wind speeds |
DataStreams: | sgp1440smosE7.b1, sgp1smosE7.b1, sgp30smosE7.b1 |
Description: | The wind sensor bearings were failing causing the wind speed sensor to report lower than actual wind speeds when the winds were below 2 m/s. The wind monitor was replaced on 05/29/2007 but this failed to correct the problem. Subsequently, the site was flooded and it took some time to re-establish normal operations. The wind sensor was again replaced on 10/30/2007. After replacement the wind data from the SMOS compared more favorably to the co-located EBBR data. |
Measurements: | sgp1440smosE7.b1:
sgp30smosE7.b1:
sgp1smosE7.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
10/18/2006 | 0000 | 05/22/2007 | 2330 |
Subject: | NSA/METTWR/C1 - 20m RH Data Questionable |
DataStreams: | nsamettwr4hC1.b1 |
Description: | The 20m RH data was questionable at times. When the data appeared to be poor was when the 2m and 20m agreed better than the 20m and the 40m and/or 10m. |
Measurements: | nsamettwr4hC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
09/06/2006 | 1920 | 03/05/2008 | 0000 |
Subject: | SGP/RL/C1 - Invalid liquid water channel data |
DataStreams: | sgprlC1.a0 |
Description: | On 20060906, the liquid water channel (LWC) was disabled due to the removal of its photomultiplier tube (PMT). Consequently, the signals recorded for the LWC contain either zero or pure noise after that date. Also, starting on 20070522, the LWC was populated with data from the T2 channel as a result of a slight reconfiguration of the data acquisition system. On 4 March 2008 The LW channel photomultiplier tube was reinstalled in the Raman lidar. Effective 0000 UTC on 5 March 2008 the LW channel began producing valid liquid water data once again. |
Measurements: | sgprlC1.a0:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
08/07/2007 | 2130 | 08/13/2007 | 1600 |
08/19/2007 | 1300 | 08/29/2007 | 2130 |
Subject: | SGP/EBBR/E27 - Multiplexer #2 failure |
DataStreams: | sgp15ebbrE27.b1, sgp30ebbrE27.b1, sgp5ebbrE27.b1 |
Description: | A problem with the #2 Multiplexer caused a large number of measurements to be incorrect. Sensible and latent heat fluxes were often affected. |
Measurements: | sgp30ebbrE27.b1:
sgp5ebbrE27.b1:
sgp15ebbrE27.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
11/29/2006 | 0000 | 10/24/2007 | 2152 |
Subject: | TWP/AERI/C2 - Reprocess: Incorrect lat/lon/alt |
DataStreams: | twpaerich1C2.b1, twpaerich2C2.b1, twpaeriengineerC2.b1, twpaerilblcloudsC2.c1, twpaerirawC2.00, twpaerisummaryC2.b1 |
Description: | AERI reporting wrong lat/lon in data. The values reported are representative of Darwin, not Nauru. A low level reprocessing task has been submitted. |
Measurements: | twpaeriengineerC2.b1:
twpaerirawC2.00:
twpaerisummaryC2.b1:
twpaerich1C2.b1:
twpaerich2C2.b1:
twpaerilblcloudsC2.c1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/15/2007 | 0000 | 03/14/2007 | 1855 |
03/14/2007 | 1856 | 06/06/2007 | 1745 |
Subject: | SGP/SIRS/E20 - Failed tracker and improperly configured tracker |
DataStreams: | sgpsirs20sE20.a0, sgpsirsE20.b1 |
Description: | On 1/15/2007 the E20 tracker failed due to weather. On 3/14 it was replaced but configured incorrectly (presumably the wrong lat/long). This wasn't discovered and corrected until 6/6/2007 1745GMT. All shortwave instruments dependent on proper tracker were affected. This includes measurements: downwelling shortwave diffuse and direct normal. Additionally, the global shortwave instrument have also been shaded during the second time range due to improperly set tracker. |
Measurements: | sgpsirsE20.b1:
sgpsirs20sE20.a0:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
05/12/2007 | 1030 | 01/02/2008 | 2240 |
Subject: | SGP/SIRS/E18 - Instrument noise problem |
DataStreams: | sgpsirs20sE18.a0, sgpsirsE18.b1 |
Description: | Starting May 12th 2007 DIR experiencing persistent, intermittent data dropouts and noise. PM found a damaged PIR cable and repaired 01/02/08 2240GMT. Noise seems to be unbiased and dropouts are beyond QC limits making QC flags a possible option in filtering for good data. However, using data during this period is not recommended. |
Measurements: | sgpsirsE18.b1:
sgpsirs20sE18.a0:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
02/10/2004 | 1558 | 04/14/2008 | 2143 |
Subject: | SGP/AERI/E14 - Reprocess: Incorrect altitude reported |
DataStreams: | sgpaerich1E14.b1, sgpaerich2E14.b1, sgpaeriengineerE14.b1, sgpaerisummaryE14.b1 |
Description: | |
Measurements: | sgpaerich1E14.b1:
sgpaeriengineerE14.b1:
sgpaerisummaryE14.b1:
sgpaerich2E14.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
06/27/2006 | 2000 | 06/30/2008 | 1740 |
Subject: | NSA/SKYRAD/C1 - Tracker inoperative |
DataStreams: | nsaskyrad20sC1.a0, nsaskyrad60sC1.b1 |
Description: | Tracker stopped working at this site during the time range specified. Reason for failure is unknown. Tracker power cycled and restarted by maintenance 06/30 2008 1740 GMT. The short_direct_normal (NIP) and down_short_diffuse_hemisp (8-48) data are bad during this time. Data are not recoverable. |
Measurements: | nsaskyrad60sC1.b1:
nsaskyrad20sC1.a0:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
03/07/2008 | 0000 | 03/10/2008 | 1500 |
03/25/2008 | 0500 | 04/04/2008 | 1600 |
04/09/2008 | 1800 | 04/10/2008 | 1500 |
Subject: | SGP/RL/C1 - Degraded sensitivity in WFOV channels |
DataStreams: | sgprlC1.a0, sgprlprofmerge1turnC1.c0 |
Description: | The sensitivity of all the wide field-of-view (WFOV) channels was abnormally low due a malfunction of the filter wheel. The filter wheel for the WFOV channels did not rotate into position properly and thus partially obscured the return light. |
Measurements: | sgprlprofmerge1turnC1.c0:
sgprlC1.a0:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
10/09/1993 | 0005 | 10/12/1995 | 2359 |
Subject: | SGP/MWR/C1 - Valid LWP > 1mm excluded from 5 min avgs |
DataStreams: | sgp5mwravgC1.c1 |
Description: | The limit of maximum valid liquid water path was set at 1 mm. Although this limit was selected 'conservatively' so as to definitely flag precipitation-contaminated data in the 20-second (sgpmwrlos) files, the effect has been to exclude valid liquid water paths greater than 1 mm from the 5-minute averages (sgp5mwravg). The maximum limits for precipitable water vapor (PWV) and liquid water path (LWP) have been removed, and the averaging algorithm instead excludes data on the basis of the brightness temperature flags. These flags are set below a minimum of 2.75 K (cosmic background) and above a maximum of 100 K (precipitation). |
Measurements: | sgp5mwravgC1.c1:
|