Data Quality Report for Order ID: 187583
User ID: lovelessd1    Date completed: 2017-09-06
All DQRs
DQR ID Subject Affected Data Streams Data Quality Metric
D020524.27 SGP/SONDE/C1 - CF sounding 20020522:1130 bad temperature/RH sgpsondewnpnC1.a1 Incorrect
D140313.1 SGP/SONDE/C1 - Wind, lat/lon data missing sgpsondeC1.a0 Missing
D020626.34 SGP/SONDE/C1 - Incorrect Surface Pressure sgpsondewnpnC1.b1 Incorrect
D030722.1 SGP/SONDE/C1 - Broken temperature sensor sgpsondewnpnC1.b1 Incorrect
D011231.1 SGP/SONDE/C1 - Bad temperature in CF sounding 12/22/01:0527 sgpsondewnpnC1.b1 Incorrect
D030330.1 SGP/Sonde/C1 - Bad temperature, RH sgpsondewnpnC1.b1 Incorrect
D090224.3 SGP/SONDE/C1 - Suspect RH values sgpsondewnpnC1.b1 Suspect
D020526.1 SGP/SONDE/C1 - Bad T/RH data in CF sounding 20020523:1129 sgpsondewnpnC1.b1 Incorrect
D170206.2 SGP/SONDE/C1 - Ice Storm sgpsondeC1.a1 Missing
D030427.1 SGP/SONDE/C1 - Broken temperature sensor sgpsondewnpnC1.b1 Incorrect
D041005.1 SGP/SONDE/C1 - Incorrect surface temperature sgpsondewnpnC1.b1 Incorrect
D020611.2 SGP/SONDE/C1 - CF sounding 20020609:0229 bad temp/rh/etc sgpsondewnpnC1.a1 Incorrect
D020909.2 SGP/SONDE/C1 - Bad Temperature Sensor sgpsondewnpnC1.b1 Incorrect
D011231.2 SGP/SONDE/C1 - Bad temperature data CF sounding 12/28/01:2326 sgpsondewnpnC1.b1 Incorrect
D021117.1 SGP/SONDE/C1 - Questionable RH: CF sounding 11/13/2002:2044 sgpsondewnpnC1.b1 Suspect
D050603.4 SGP/SONDE/C1 - Surface pressure incorrect sgpsondewnpnC1.b1 Incorrect
D051027.1 SGP/SONDE/C1 - Bad RH Data sgpsondewnpnC1.b1 Incorrect
D031112.1 SGP/SONDE/C1 - Broken temperature sensor sgpsondewnpnC1.b1 Incorrect
D021121.1 SGP/SONDE/C1 - Contaminated by interference sgpsondewnpnC1.b1 Suspect
D021201.1 SGP/SONDE/C1 - Questionable RH CF sounding 0211211:1130 sgpsondewnpnC1.a1 Suspect
D030707.7 SGP/SONDE/C1 - Incorrect surface RH value. sgpsondewnpnC1.b1 Incorrect
D061201.1 SGP/SONDE/C1 - RH Sensor failure sgpsondewnpnC1.b1 Suspect
D040301.1 SGP/SONDE/C1 - Broken temperature sensor sgpsondewnpnC1.b1 Incorrect
D160104.7 SGP Site Power Outage Due to Winter Storm sgpirt200msE13.a1 Note
D030507.3 SGP/SONDE/C1 - Broken temperature sensors sgpsondewnpnC1.a1 Incorrect
D021006.1 Bad temperature sensor sgpsondewnpnC1.b1 Incorrect
D011207.3 SGP/SONDE/C1 - Bad temp (other?) data in 12/3/01:2328 sounding sgpsondewnpnC1.a1 Incorrect
D140313.2 SGP/SONDE/C1 - Wind speed/dir missing surface to 450mb sgpsondeC1.a0 Missing
D030411.3 SGP/Sonde/C1 - Failed Sonde Launches due to Antenna problems sgpsondewnpnC1.b1 Missing
D020703.1 SGP/SONDE/C1 - Temperature sensor failure sgpsondewnpnC1.b1 Incorrect
D060227.2 SGP/SONDE/C1 - Soundings done as part of dual-sonde flights sgpsondewnpnC1.b1 Note
D030114.1 SGP/SONDE/C1 - Bad RH Data sgpsondewnpnC1.a1 Incorrect
D030206.5 SGP/SONDE/C1 - Bad temperature/RH sgpsondewnpnC1.a1 Incorrect
D060208.2 SGP/SONDE/C1 - Mixed use of RS92-SGP and RS92-KL radiosondes sgpsondewnpnC1.b1 Note
D030411.1 SGP/Sonde/C1 - Sondes launched an hour early sgpsondewnpnC1.b1 Note
D030807.1 SGP/SONDE/C1 - A few bad temperature values at the beginning of the sounding sgpsondewnpnC1.a1 Incorrect
D060928.2 SGP/SONDE/C1 - RH values offset due to error in ground check sgpsondewnpnC1.b1 Suspect
D050421.5 SGP/SONDE/C1 - Surface pressure incorrect sgpsondewnpnC1.b1 Incorrect
D040223.1 SGP/SONDE/C1 - Broken temperature sensor sgpsondewnpnC1.b1 Incorrect
D020110.1 SGP/SONDE/C1 - Bad temperature in SGP/CF sounding 20020108:0528 sgpsondewnpnC1.a1 Incorrect
D030409.1 SGP/Sonde/C1 - Bad RH in sounding sgpsondewnpnC1.a1 Incorrect
D030614.1 SGP/SONDE/C1 - Broken temperature sensor sgpsondewnpnC1.b1 Incorrect
D040415.2 SGP/SONDE/C1 - Temperature sensor broke high into the sounding sgpsondewnpnC1.b1 Incorrect
D021123.2 SGP/SONDE/C1 - Interference CF sounding 20021120:0225 sgpsondewnpnC1.b1 Suspect
D030411.2 SGP/Sonde/C1 - Incorrect surface temperature on CF sounding sgpsondewnpnC1.b1 Incorrect
D060630.1 SGP/SONDE/C1 - No Wind/Lat/Lon Data in Sonde Files sgpsondewnpnC1.b1 Note
D020626.35 SGP/SONDE/C1 - Bad Temperature Sensor sgpsondewnpnC1.a1 Incorrect
D160317.9 SGP/SONDE/C1 - Instrument Winds/Lat-Lon Missing sgpsondewnprC1.a1 Missing
D170403.3 SGP/SONDE/C1 - Instrument sgpsondeC1.a0 Missing
D150422.1 SGP/SONDE/C1 - RH sensor failure sgpsondeC1.a1 Incorrect
D051121.1 SGP/SONDE/C1 - Sonde RH values incorrect sgpsondewnpnC1.b1 Incorrect
D050510.1 SGP/SONDE/C1 - Surface pressure bad and other data noisy sgpsondewnpnC1.b1 Suspect
D030419.2 SGP/SONDE/C1 - Broken Temperature Sensor sgpsondewnpnC1.b1 Incorrect
D100803.3 SGP/SONDE/C1 - Sensor failure sgpsondewnpnC1.b1 Incorrect
D080829.2 SGP/SONDE/C1 - Suspect RH profile from 150-350 m above ground level sgpsondewnpnC1.b1 Suspect
D170512.4 SGP/SONDE/C1 - Instrument sgpsondewrpnC1.a1 Missing
D040219.1 SGP/SONDE/C1 - Bad RH Data sgpsondewnpnC1.b1 Incorrect
D041013.4 SGP/SONDE/C1 - Scheduled Soundings Missed sgpsondewnpnC1.b1 Missing
D060303.1 SGP/SONDE/C1 - DigiCORAIII failed, replaced with S01/S02 launches sgpsondewnpnC1.b1 Note
D050725.1 SGP/SONDE/C1 - Bad RH Data sgpsondewnpnC1.b1 Incorrect
D050912.2 SGP/SONDE/C1 - Temperature/RH incorrect sgpsondewnpnC1.b1 Incorrect
D130617.4 SGP/SONDE/C1 - Missing WS/WD/Lat/Lon sgpsondewnpnC1.b1 Missing
D030122.1 SGP/SONDE/C1 - Broken temperature sensor SGP/CF sounding sgpsondewnpnC1.b1 Incorrect
D040127.2 SGP/SONDE/C1 - Bad RH Data sgpsondewnpnC1.b1 Incorrect
D050201.1 SGP/SONDE/C1 - Possibly bad pressure sensor or operator data entry error sgpsondewnpnC1.b1 Suspect
D050510.2 SGP/SONDE/C1 - Surface pressure incorrect sgpsondewnpnC1.b1 Incorrect
D040219.2 SGP/SONDE/C1 - Surface pressure incorrect sgpsondewnpnC1.b1 Incorrect
D050811.5 SGP/SONDE/C1 - Bad T/RH and surface P. sgpsondewnpnC1.b1 Incorrect
D020909.1 SGP/SONDE/C1 - Bad Temperature Sensor sgpsondewnpnC1.a1 Incorrect
 
DQR ID: D020524.27    (Back to Top)
Start Date Start Time End Date End Time Data Quality Metric
2002-05-22 11:30:00 2002-05-22 13:47:00 Incorrect
Subject: SGP/SONDE/C1 - CF sounding 20020522:1130 bad temperature/RH
Affected Datastreams: sgpsondewnpnC1.a1
Description It appears that the sonde sensor boom was damaged upon launch. The result is that no RH data are reported and the reported temperature is something on the order of 60 degC too low.
Measurements
  • alt (Altitude above mean sea level)
  • asc (Ascent Rate)
  • tdry (Dry Bulb Temperature)
  • dp (Dewpoint Temperature)
  • rh (Relative Humidity)
 
DQR ID: D140313.1    (Back to Top)
Start Date Start Time End Date End Time Data Quality Metric
2014-03-09 05:29:00 2014-03-09 06:47:00 Missing
Subject: SGP/SONDE/C1 - Wind, lat/lon data missing
Affected Datastreams: sgpsondeC1.a0
Description It appears the GPS-derived data (wind speed, wind direction, lat, lon) is missing due to a failure of the GPS components on the radiosonde. Data is missing and not recoverable.
Measurements
  • lon (East longitude)
  • lat (North latitude)
  • v_wind (Northward Wind Component)
  • wstat (Wind Status)
  • wspd (Wind Speed)
  • u_wind (Eastward Wind Component)
  • deg (Wind Direction)
 
DQR ID: D020626.34    (Back to Top)
Start Date Start Time End Date End Time Data Quality Metric
2002-06-17 11:28:00 2002-06-17 13:13:00 Incorrect
Subject: SGP/SONDE/C1 - Incorrect Surface Pressure
Affected Datastreams: sgpsondewnpnC1.b1
Description It appears that the operator made a typographical error when entering the surface pressure. The file has 987.0 hPa and it probably should be 978.0 which would be consistent with the first sample provided by the radiosonde (977.3 hPa), the surface pressures recorded for the adjacent soundings, and the THWAPS pressure. Because the sounding altitude is calculated assuming the surface pressure is correct, the altitude values for the entire flight and the ascent rate values for the first 30 seconds of the sounding will be incorrect.
Measurements
  • alt (Altitude above mean sea level)
  • asc (Ascent Rate)
 
DQR ID: D030722.1    (Back to Top)
Start Date Start Time End Date End Time Data Quality Metric
2003-07-19 17:30:00 2003-07-19 19:30:00 Incorrect
Subject: SGP/SONDE/C1 - Broken temperature sensor
Affected Datastreams: sgpsondewnpnC1.b1
Description The temperature sensor broke at launch on this sounding. All of the temperature-related data (tdry, rh, dp) are incorrect.
Measurements
  • tdry (Dry Bulb Temperature)
  • dp (Dewpoint Temperature)
  • rh (Relative Humidity)
 
DQR ID: D011231.1    (Back to Top)
Start Date Start Time End Date End Time Data Quality Metric
2001-12-22 05:27:00 2001-12-22 06:59:00 Incorrect
Subject: SGP/SONDE/C1 - Bad temperature in CF sounding 12/22/01:0527
Affected Datastreams: sgpsondewnpnC1.b1
Description The temperature data in this sounding look bad after the first value. The temperature series is 11.4, 2.6, -14.3, -32.4 in the first 6 seconds of flight. I don't know why this occurred, but it obviously is incorrect. The pressure and RH data look reasonable.
Measurements
  • tdry (Dry Bulb Temperature)
  • dp (Dewpoint Temperature)
 
DQR ID: D030330.1    (Back to Top)
Start Date Start Time End Date End Time Data Quality Metric
2003-03-20 17:31:00 2003-03-20 19:04:00 Incorrect
2003-03-20 11:31:00 2003-03-20 11:40:00 Incorrect
2003-03-18 11:32:00 2003-03-18 13:22:00 Incorrect
Subject: SGP/Sonde/C1 - Bad temperature, RH
Affected Datastreams: sgpsondewnpnC1.b1
Description These three soundings all show the effects of a temperature sensor broken at launch. The temperature, RH, dew-point values all are incorrect.
Measurements
  • tdry (Dry Bulb Temperature)
  • dp (Dewpoint Temperature)
  • rh (Relative Humidity)
 
DQR ID: D090224.3    (Back to Top)
Start Date Start Time End Date End Time Data Quality Metric
2009-01-06 17:30:00 2009-01-06 19:14:18 Suspect
Subject: SGP/SONDE/C1 - Suspect RH values
Affected Datastreams: sgpsondewnpnC1.b1
Description RH values only are suspect for the duration of this radiosonde flight, exhibiting a "sawtooth" pattern.
Measurements
  • dp (Dewpoint Temperature)
  • rh (Relative Humidity)
 
DQR ID: D020526.1    (Back to Top)
Start Date Start Time End Date End Time Data Quality Metric
2002-05-23 11:29:00 2002-05-23 13:22:00 Incorrect
Subject: SGP/SONDE/C1 - Bad T/RH data in CF sounding 20020523:1129
Affected Datastreams: sgpsondewnpnC1.b1
Description It appears that the sensor boom was damaged shortly after launch. The temperature reading jumps -60 degC and the RH goes to 0.
Measurements
  • alt (Altitude above mean sea level)
  • rh (Relative Humidity)
  • asc (Ascent Rate)
  • dp (Dewpoint Temperature)
  • tdry (Dry Bulb Temperature)
 
DQR ID: D170206.2    (Back to Top)
Start Date Start Time End Date End Time Data Quality Metric
2017-01-13 23:30:00 2017-01-15 23:22:00 Missing
Subject: SGP/SONDE/C1 - Ice Storm
Affected Datastreams: sgpsondeC1.a1
Description Due to local ice storm, radiosonde launches were halted. Data not available.
Measurements
  • qc_asc (Quality check results on field: Ascent Rate)
  • qc_u_wind (Quality check results on field: Eastward Wind Component)
  • time (Time offset from midnight)
  • rh (Relative Humidity)
  • qc_pres (Quality check results on field: Pressure)
  • dp (Dewpoint Temperature)
  • wspd (Wind Speed)
  • wstat (Wind Status)
  • lat (North latitude)
  • qc_rh (Quality check results on field: Relative Humidity)
  • qc_dp (Quality check results on field: Dewpoint Temperature)
  • time_offset (Time offset from base_time)
  • alt (Altitude above mean sea level)
  • qc_wspd (Quality check results on field: Wind Speed)
  • lon (East longitude)
  • pres (Pressure)
  • qc_time (Quality check results on field: Time offset from midnight)
  • tdry (Dry Bulb Temperature)
  • deg (Wind Direction)
  • qc_tdry (Quality check results on field: Dry Bulb Temperature)
  • qc_deg (Quality check results on field: Wind Direction)
  • base_time (Base time in Epoch)
  • qc_v_wind (Quality check results on field: Northward Wind Component)
  • asc (Ascent Rate)
  • v_wind (Northward Wind Component)
  • u_wind (Eastward Wind Component)
 
DQR ID: D030427.1    (Back to Top)
Start Date Start Time End Date End Time Data Quality Metric
2003-04-18 11:30:00 2003-04-18 13:10:00 Incorrect
Subject: SGP/SONDE/C1 - Broken temperature sensor
Affected Datastreams: sgpsondewnpnC1.b1
Description The temperature sensor on this radiosonde broke after launch. All temperature-related variables (dp, tdry, rh) are incorrect.
Measurements
  • tdry (Dry Bulb Temperature)
  • dp (Dewpoint Temperature)
  • rh (Relative Humidity)
 
DQR ID: D041005.1    (Back to Top)
Start Date Start Time End Date End Time Data Quality Metric
2004-10-02 11:30:00 2004-10-02 11:31:00 Incorrect
Subject: SGP/SONDE/C1 - Incorrect surface temperature
Affected Datastreams: sgpsondewnpnC1.b1
Description The operator entered the surface temperature incorrectly on this sounding. The sonde data file shows the temperature as 33.5 degC but the operations log shows it as 3.5 degC. The first temperature recorded by the sonde after launch is 3.7 degC, consistent with the typical early morning inversion.
Measurements
  • tdry (Dry Bulb Temperature)
  • dp (Dewpoint Temperature)
  • rh (Relative Humidity)
 
DQR ID: D020611.2    (Back to Top)
Start Date Start Time End Date End Time Data Quality Metric
2002-06-09 02:29:00 2002-06-09 02:36:00 Incorrect
Subject: SGP/SONDE/C1 - CF sounding 20020609:0229 bad temp/rh/etc
Affected Datastreams: sgpsondewnpnC1.a1
Description The temperature and RH for this sounding look bad, either because of interference from another sonde or because the temperature sensor was broken on launch. The sounding terminated early in any event.
Measurements
  • alt (Altitude above mean sea level)
  • asc (Ascent Rate)
  • tdry (Dry Bulb Temperature)
  • dp (Dewpoint Temperature)
  • rh (Relative Humidity)
 
DQR ID: D020909.2    (Back to Top)
Start Date Start Time End Date End Time Data Quality Metric
2002-09-06 05:27:00 2002-09-06 07:18:00 Incorrect
Subject: SGP/SONDE/C1 - Bad Temperature Sensor
Affected Datastreams: sgpsondewnpnC1.b1
Description It appears that the temperature sensor broke shortly after launch. Temperatures are offset by approxmiately (but not constantly) 40 degC.
Measurements
  • tdry (Dry Bulb Temperature)
  • dp (Dewpoint Temperature)
  • rh (Relative Humidity)
 
DQR ID: D011231.2    (Back to Top)
Start Date Start Time End Date End Time Data Quality Metric
2001-12-28 23:26:00 2001-12-29 00:45:00 Incorrect
Subject: SGP/SONDE/C1 - Bad temperature data CF sounding 12/28/01:2326
Affected Datastreams: sgpsondewnpnC1.b1
Description The temperature data in this sounding are bad from approximately 16 seconds into the flight. The temperature series is 9.9, 10.8, 11.3, 1.5, 11.6, 11.6, 11.6, -32.2 and remains below -30 degC. I don't know why this occurred, but it clearly is incorrect. The pressure data looks OK as does the RH, though the RH data are missing (probably sensor failure) above roughly 3.5 km.
Measurements
  • tdry (Dry Bulb Temperature)
  • dp (Dewpoint Temperature)
 
DQR ID: D021117.1    (Back to Top)
Start Date Start Time End Date End Time Data Quality Metric
2002-11-13 20:44:00 2002-11-13 22:05:00 Suspect
Subject: SGP/SONDE/C1 - Questionable RH: CF sounding 11/13/2002:2044
Affected Datastreams: sgpsondewnpnC1.b1
Description The RH data in this sounding is erratic between 2km and 10 km, oscillating between reasonable values (~40%RH) and zero. I certainly doubt that this is a real, heretofore unreported, atmospheric phenomenon so I have to conclude that something is probably wrong with the sensor. I have not seen this behavior before. One would have to look at the absolutely raw RH data to explore further.
Measurements
  • dp (Dewpoint Temperature)
  • rh (Relative Humidity)
 
DQR ID: D050603.4    (Back to Top)
Start Date Start Time End Date End Time Data Quality Metric
2005-05-11 05:30:00 2005-05-11 07:50:00 Incorrect
Subject: SGP/SONDE/C1 - Surface pressure incorrect
Affected Datastreams: sgpsondewnpnC1.b1
Description I think the operator inadvdertently mistyped a digit when entering the surface pressure value. The value entered is 975.6 hPa but the value shown in the raw data file at launch is 972.6. As a result, the absolute altitudes in this sounding will be slightly incorrect as will be the ascent rate during the first 30 seconds of flight.
Measurements
  • alt (Altitude above mean sea level)
  • asc (Ascent Rate)
 
DQR ID: D051027.1    (Back to Top)
Start Date Start Time End Date End Time Data Quality Metric
2005-10-24 11:40:00 2005-10-24 12:04:00 Incorrect
Subject: SGP/SONDE/C1 - Bad RH Data
Affected Datastreams: sgpsondewnpnC1.b1
Description The RH values during this sounding oscillate between reasonable values and near-zero values. The oscillation is due to failure of the RH sensor heating process.
Measurements
  • dp (Dewpoint Temperature)
  • rh (Relative Humidity)
 
DQR ID: D031112.1    (Back to Top)
Start Date Start Time End Date End Time Data Quality Metric
2003-11-01 11:33:00 2003-11-01 13:15:00 Incorrect
Subject: SGP/SONDE/C1 - Broken temperature sensor
Affected Datastreams: sgpsondewnpnC1.b1
Description The temperature sensor broke at launch on this sounding. All of the temperature-related data (tdry, rh, dp) are incorrect.
Measurements
  • tdry (Dry Bulb Temperature)
  • dp (Dewpoint Temperature)
  • rh (Relative Humidity)
 
DQR ID: D021121.1    (Back to Top)
Start Date Start Time End Date End Time Data Quality Metric
2002-11-19 14:23:00 2002-11-19 16:23:00 Suspect
2002-11-19 20:26:00 2002-11-19 22:04:00 Suspect
2002-11-19 17:26:00 2002-11-19 19:17:00 Suspect
Subject: SGP/SONDE/C1 - Contaminated by interference
Affected Datastreams: sgpsondewnpnC1.b1
Description These three soundings are contaminated by interference from another radiosonde. It is not clear why; this doesn't usually happen at the CF where the operators are very experienced and frequency separation is not usually a problem.
Measurements
  • lon (East longitude)
  • pres (Pressure)
  • lat (North latitude)
  • tdry (Dry Bulb Temperature)
  • base_time (Base time in Epoch)
  • rh (Relative Humidity)
  • asc (Ascent Rate)
  • dp (Dewpoint Temperature)
  • alt (Altitude above mean sea level)
  • wstat (Wind Status)
  • wspd (Wind Speed)
  • u_wind (Eastward Wind Component)
  • deg (Wind Direction)
  • time_offset (Time offset from base_time)
  • v_wind (Northward Wind Component)
 
DQR ID: D021201.1    (Back to Top)
Start Date Start Time End Date End Time Data Quality Metric
2002-11-21 11:30:00 2002-11-21 13:11:00 Suspect
Subject: SGP/SONDE/C1 - Questionable RH CF sounding 0211211:1130
Affected Datastreams: sgpsondewnpnC1.a1
Description The RH samples in this sounding oscillate between reasonable values (60-80%) and zero. This may be a problem with the RH sensor or the software that alternates between the heated and non-heated RH elements. In either case, the reported values are questionable. More investigation of the raw binary data would be required to diagnose further.
Measurements
  • dp (Dewpoint Temperature)
  • rh (Relative Humidity)
 
DQR ID: D030707.7    (Back to Top)
Start Date Start Time End Date End Time Data Quality Metric
2003-06-22 23:31:00 2003-06-22 23:31:00 Incorrect
Subject: SGP/SONDE/C1 - Incorrect surface RH value.
Affected Datastreams: sgpsondewnpnC1.b1
Description The surface RH value, reported as 0%RH should be 52%. This resulted from a typographical error by the operator when entering the surface data.
Measurements
  • dp (Dewpoint Temperature)
  • rh (Relative Humidity)
 
DQR ID: D061201.1    (Back to Top)
Start Date Start Time End Date End Time Data Quality Metric
2006-11-27 23:31:00 2006-11-28 00:56:00 Suspect
Subject: SGP/SONDE/C1 - RH Sensor failure
Affected Datastreams: sgpsondewnpnC1.b1
Description The differences between the two RH sensors on this sonde are unreasonably high (~20%). As a result the reported RH values oscillate by this amount during the times the sensors are alternately heated. After the heating stops, the reported RH comes from the sensor reading the higher value. There is no way of knowing if this is the correct value.
Measurements
  • dp (Dewpoint Temperature)
  • rh (Relative Humidity)
 
DQR ID: D040301.1    (Back to Top)
Start Date Start Time End Date End Time Data Quality Metric
2004-02-27 05:31:00 2004-02-27 07:21:00 Incorrect
Subject: SGP/SONDE/C1 - Broken temperature sensor
Affected Datastreams: sgpsondewnpnC1.b1
Description The temperature sensor broke shortly after launch on this sounding. All of the temperature-related data (tdry, rh, dp) are incorrect.
Measurements
  • tdry (Dry Bulb Temperature)
  • dp (Dewpoint Temperature)
  • rh (Relative Humidity)
 
DQR ID: D160104.7    (Back to Top)
Start Date Start Time End Date End Time Data Quality Metric
2015-12-26 00:00:00 2016-01-01 23:59:59 Note
Subject: SGP Site Power Outage Due to Winter Storm
Affected Datastreams: sgpirt200msE13.a1
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
  • lon (East longitude)
  • pres (Pressure)
  • lat (North latitude)
  • qc_time (Quality check results on field: Time offset from midnight)
  • time (Time offset from midnight)
  • base_time (Base time in Epoch)
  • tdry (Dry Bulb Temperature)
  • rh (Relative Humidity)
  • asc (Ascent Rate)
  • v_wind (Northward Wind Component)
  • time_offset (Time offset from base_time)
  • wspd (Wind Speed)
  • alt (Altitude above mean sea level)
  • u_wind (Eastward Wind Component)
  • deg (Wind Direction)
  • wstat (Wind Status)
  • dp (Dewpoint Temperature)
 
DQR ID: D030507.3    (Back to Top)
Start Date Start Time End Date End Time Data Quality Metric
2003-05-04 23:30:00 2003-05-05 01:16:00 Incorrect
2003-05-04 11:30:00 2003-05-04 11:45:00 Incorrect
Subject: SGP/SONDE/C1 - Broken temperature sensors
Affected Datastreams: sgpsondewnpnC1.a1
Description The temperature sensors broke at launch on both of these soundings. All of the temperature-related data (tdry, rh, dp) are incorrect.
Measurements
  • tdry (Dry Bulb Temperature)
  • dp (Dewpoint Temperature)
  • rh (Relative Humidity)
 
DQR ID: D021006.1    (Back to Top)
Start Date Start Time End Date End Time Data Quality Metric
2002-10-03 11:20:00 2002-10-03 13:20:00 Incorrect
Subject: Bad temperature sensor
Affected Datastreams: sgpsondewnpnC1.b1
Description It appears that the temperture sensor broke a few seconds into flight. This results in an unreasonably low temperature for the rest of the flight. For some reason, the rh values also go missing shortly after launch. Only the wind and pressure data are reliable.
Measurements
  • alt (Altitude above mean sea level)
  • asc (Ascent Rate)
  • tdry (Dry Bulb Temperature)
  • dp (Dewpoint Temperature)
  • rh (Relative Humidity)
 
DQR ID: D011207.3    (Back to Top)
Start Date Start Time End Date End Time Data Quality Metric
2001-12-03 23:28:00 2001-12-04 01:58:00 Incorrect
Subject: SGP/SONDE/C1 - Bad temp (other?) data in 12/3/01:2328 sounding
Affected Datastreams: sgpsondewnpnC1.a1
Description It looks as though the temperature sensor was damaged on launch. The recorded temp goes from 16.4 at the surface to -42.6 at 2 seconds into the flight. The temperature never exceeds -42 though the RH and pressure look reasonable, but probably should be considered questionable.
Measurements
  • tdry (Dry Bulb Temperature)
  • dp (Dewpoint Temperature)
  • rh (Relative Humidity)
 
DQR ID: D140313.2    (Back to Top)
Start Date Start Time End Date End Time Data Quality Metric
2014-03-10 05:30:00 2014-03-10 05:59:00 Missing
Subject: SGP/SONDE/C1 - Wind speed/dir missing surface to 450mb
Affected Datastreams: sgpsondeC1.a0
Description Wind speed and direction are missing between surface and 450mb.
Measurements
  • wspd (Wind Speed)
  • u_wind (Eastward Wind Component)
  • deg (Wind Direction)
  • v_wind (Northward Wind Component)
 
DQR ID: D030411.3    (Back to Top)
Start Date Start Time End Date End Time Data Quality Metric
2003-04-01 17:30:00 2003-04-01 19:30:00 Missing
2003-04-02 11:30:00 2003-04-02 13:30:00 Missing
2003-04-02 05:30:00 2003-04-02 07:30:00 Missing
Subject: SGP/Sonde/C1 - Failed Sonde Launches due to Antenna problems
Affected Datastreams: sgpsondewnpnC1.b1
Description These sonde launches where unsuccessful due to problems with the antenna configuration resulting in signal loss before the launch.
Measurements
  • lon (East longitude)
  • pres (Pressure)
  • lat (North latitude)
  • tdry (Dry Bulb Temperature)
  • base_time (Base time in Epoch)
  • rh (Relative Humidity)
  • asc (Ascent Rate)
  • v_wind (Northward Wind Component)
  • time_offset (Time offset from base_time)
  • wstat (Wind Status)
  • alt (Altitude above mean sea level)
  • u_wind (Eastward Wind Component)
  • wspd (Wind Speed)
  • dp (Dewpoint Temperature)
  • deg (Wind Direction)
 
DQR ID: D020703.1    (Back to Top)
Start Date Start Time End Date End Time Data Quality Metric
2002-06-27 17:28:00 2002-06-27 19:08:00 Incorrect
Subject: SGP/SONDE/C1 - Temperature sensor failure
Affected Datastreams: sgpsondewnpnC1.b1
Description Temperature sensor broke at launch. All temperature-related variables are incorrect.
Measurements
  • tdry (Dry Bulb Temperature)
  • dp (Dewpoint Temperature)
  • rh (Relative Humidity)
 
DQR ID: D060227.2    (Back to Top)
Start Date Start Time End Date End Time Data Quality Metric
2006-02-22 00:00:00 2006-02-27 00:00:00 Note
Subject: SGP/SONDE/C1 - Soundings done as part of dual-sonde flights
Affected Datastreams: sgpsondewnpnC1.b1
Description The following soundings done during the subject time period were flown in dual-sonde mode in which the standard ARM RS92 radiosonde was attached to the same balloon with a NASA ATR (atmospheric temperature reference) radiosonde. The radiosondes were separated by a 6' styrofoam bar. To accommodate the additional weight, we used 1200g balloons rather than 350g balloons. Accordingly, we want to alert users that these soundings may reach higher altitudes than normal for ARM soundings and that the ascent rate may be somewhat higher. The following soundings are affected: Sequence Date UTC launch time 1 2/22 0530 2 2/22 1730 3 2/22 2330 <---- No data: launch failure 4 2/23 0230 5 2/23 0530 6 2/23 1730 7 2/23 2030 8 2/23 2330 9 2/24 2330 10 2/25 0215 11 2/25 0509 12 2/25 1730 13 2/25 1930 14 2/25 2300
Measurements
  • lon (East longitude)
  • pres (Pressure)
  • lat (North latitude)
  • tdry (Dry Bulb Temperature)
  • base_time (Base time in Epoch)
  • u_wind (Eastward Wind Component)
  • rh (Relative Humidity)
  • asc (Ascent Rate)
  • dp (Dewpoint Temperature)
  • time_offset (Time offset from base_time)
  • alt (Altitude above mean sea level)
  • wspd (Wind Speed)
  • wstat (Wind Status)
  • v_wind (Northward Wind Component)
  • deg (Wind Direction)
 
DQR ID: D030114.1    (Back to Top)
Start Date Start Time End Date End Time Data Quality Metric
2003-01-11 05:36:00 2003-01-11 05:51:00 Incorrect
Subject: SGP/SONDE/C1 - Bad RH Data
Affected Datastreams: sgpsondewnpnC1.a1
Description The RH values during the first 15 minutes of this sounding oscillate between reasonable values and near-zero values. The oscillation is irregular and seems to be related to failure of the RH sensor heating process. I have informed Vaisala of the problem and provided raw data files to them for analysis.
Measurements
  • dp (Dewpoint Temperature)
  • rh (Relative Humidity)
 
DQR ID: D030206.5    (Back to Top)
Start Date Start Time End Date End Time Data Quality Metric
2003-02-02 17:32:00 2003-02-02 18:32:00 Incorrect
Subject: SGP/SONDE/C1 - Bad temperature/RH
Affected Datastreams: sgpsondewnpnC1.a1
Description The temperature sensor broke shortly after launch. All temperature and RH-related data are incorrect.
Measurements
  • tdry (Dry Bulb Temperature)
  • dp (Dewpoint Temperature)
  • rh (Relative Humidity)
 
DQR ID: D060208.2    (Back to Top)
Start Date Start Time End Date End Time Data Quality Metric
2006-02-10 00:00:00 2006-12-31 23:59:00 Note
Subject: SGP/SONDE/C1 - Mixed use of RS92-SGP and RS92-KL radiosondes
Affected Datastreams: sgpsondewnpnC1.b1
Description Because of a manufacturer's production problem, we will be using both RS92-SGP (GPS windfinding and RS92-KL (Loran windfinding) radiosondes at the SGP/CF starting February 10, 2006. The radiosonde type used for the each sounding may be determined by looking the metadata variable "launch_status" in the netCDF data files.
Measurements
  • lon (East longitude)
  • lat (North latitude)
  • v_wind (Northward Wind Component)
  • wstat (Wind Status)
  • wspd (Wind Speed)
  • u_wind (Eastward Wind Component)
  • deg (Wind Direction)
 
DQR ID: D030411.1    (Back to Top)
Start Date Start Time End Date End Time Data Quality Metric
2003-04-06 22:00:00 2003-04-07 07:00:00 Note
Subject: SGP/Sonde/C1 - Sondes launched an hour early
Affected Datastreams: sgpsondewnpnC1.b1
Description It looks like someone forgot to set his/her clock ahead. The sounding that should have been done at 23:30 UTC on 4/6 was done at 22:38 and the following sounding, which should have been done at 0530 on 4/7 was done at 04:31. The subsequent soundings all are done at the correct times.
Measurements
  • lon (East longitude)
  • pres (Pressure)
  • lat (North latitude)
  • tdry (Dry Bulb Temperature)
  • base_time (Base time in Epoch)
  • u_wind (Eastward Wind Component)
  • rh (Relative Humidity)
  • asc (Ascent Rate)
  • v_wind (Northward Wind Component)
  • dp (Dewpoint Temperature)
  • wspd (Wind Speed)
  • alt (Altitude above mean sea level)
  • wstat (Wind Status)
  • deg (Wind Direction)
  • time_offset (Time offset from base_time)
 
DQR ID: D030807.1    (Back to Top)
Start Date Start Time End Date End Time Data Quality Metric
2003-08-02 17:25:00 2003-08-02 17:26:00 Incorrect
Subject: SGP/SONDE/C1 - A few bad temperature values at the beginning of the sounding
Affected Datastreams: sgpsondewnpnC1.a1
Description I've never seen this before. The temperature reported by the radiosonde dropped over 30 degC just after launch (usually a symptom of a broken temperature sensor), but then recovered after 14 seconds of bad readings. The temperatures from 2 seconds through 14 seconds after launch are incorrect, the remainder of the sounding looks fine. I have sent the data files to Vaisala for their consideration.
Measurements
  • tdry (Dry Bulb Temperature)
  • dp (Dewpoint Temperature)
 
DQR ID: D060928.2    (Back to Top)
Start Date Start Time End Date End Time Data Quality Metric
2006-08-27 23:32:00 2006-09-25 16:00:00 Suspect
Subject: SGP/SONDE/C1 - RH values offset due to error in ground check
Affected Datastreams: sgpsondewnpnC1.b1
Description Background: After installation of the latest software update , we began performing formal ground checks on RS92 radiosondes. By comparing the radiosonde readings with reference values in a controlled environment, the ground check is intended to ensure that the radiosonde sensors are in calibration before launch. The radisonde values during the ground check process are recorded automatically; the reference values are entered by the operator. If the radiosonde readings vary from the reference values, the system 'corrects' the radiosonde values. In the case of RH, the correction is applied as an offset (true RH = indicated RH + correction). Problem: Some operators misunderstood the ground-check procedure and entered the radiosonde values of RH rather than the reference value (assumed 0%RH), thus, some soundings done during this period have RH values that are different from what they would be if the ground check procedure had been done correctly. Consequence: Because the RH corrections generally are small (averaging about 0.5% RH) and the precision of the reported RH data during this time period is 1% RH, some values will not be affected at all; others will be off by about 1% RH (still within the stated accuracy of the sensor). Furthermore, because entering the radiosonde value as the reference value results in a near zero 'correction,' one may view these soundings as being done without the ground check correction. Also note that the dew point value will be suspect as well. I am attaching below a listing of the soundings that were affected during the indicated time period. Users can see the magnitude of the problem and choose whether or not to apply an offset in RH. Note that application of the offset to the processed RH data (in the netCDF file) will not have the same effect of applying the correction to the absolutely raw data (before processing), but the differences should be insignificant. Also note that the corrections for each sounding are included in the netCDF header information. These attributes are named 'humidity_correction' and 'humidity_correction_2'. The values of RH indicated by the radiosonde while it is in the ground check set are in attributes 'humidity_gc_sonde' and 'humidity_gc_sonde_2.' There is an RH reading for each of the two RH sensors used in the RS92 radiosonde. Here is the list - RH1 and RH2 are the radiosonde readings in the ground check set. Ref is the reference value entered by the operator. The correcte reference value should be 0%. To obtain an approximation to the RH value that would have been recorded if the ground check had been done properly, subtract the Ref value from the indicated RH. YYYYMMDD HHMM SerialN RH1 RH2 Ref 20060827 2332 B2624322 1.00 1.00 1.00 20060828 1731 B2634078 1.00 1.00 1.00 20060828 2332 B2624380 3.00 3.00 2.00 20060909 2331 B2615266 1.00 1.00 1.00 20060915 1759 B2914012 1.00 1.00 1.00 20060919 2350 B2825128 1.00 1.00 1.00 20060920 1800 B2825088 1.00 1.00 1.00 20060920 2346 B2815633 1.00 1.00 1.00 20060921 1728 B2834732 1.30 1.30 1.30 20060921 2330 B2825042 1.50 1.50 1.50 20060922 0527 B2825043 1.70 1.80 1.70 20060922 1128 B2825031 1.60 1.50 1.60 20060922 1729 B2834437 1.50 1.50 1.50 20060922 2330 B2825040 0.40 0.50 0.50 20060923 0529 B2834733 0.30 0.30 0.30 20060923 1128 B2825026 0.40 0.40 0.40 20060923 1729 B2825064 0.60 0.70 0.60 20060923 2330 B2825041 0.40 0.50 0.50 20060924 0529 B2825039 0.30 0.30 0.30 20060924 1729 B2825025 0.20 0.30 0.20 20060924 2329 B2825032 0.30 0.40 0.40 20060925 0529 B2824234 0.20 0.30 0.20
Measurements
  • dp (Dewpoint Temperature)
  • rh (Relative Humidity)
 
DQR ID: D050421.5    (Back to Top)
Start Date Start Time End Date End Time Data Quality Metric
2005-04-11 17:49:00 2005-04-11 19:20:00 Incorrect
Subject: SGP/SONDE/C1 - Surface pressure incorrect
Affected Datastreams: sgpsondewnpnC1.b1
Description I think the operator inadvdertently entered an incorrect surface pressure value. The value entered is 988.8 hPa but the value shown in the raw data file at launch is 968.8. As a result, the absolute altitudes in this sounding will be slightly incorrect as will be the ascent rate during the first 30 seconds of flight.
Measurements
  • alt (Altitude above mean sea level)
  • asc (Ascent Rate)
 
DQR ID: D040223.1    (Back to Top)
Start Date Start Time End Date End Time Data Quality Metric
2004-02-19 17:46:00 2004-02-19 19:46:00 Incorrect
Subject: SGP/SONDE/C1 - Broken temperature sensor
Affected Datastreams: sgpsondewnpnC1.b1
Description The temperature sensor broke at launch on this sounding. All of the temperature-related data (tdry, rh, dp) are incorrect.
Measurements
  • tdry (Dry Bulb Temperature)
  • dp (Dewpoint Temperature)
  • rh (Relative Humidity)
 
DQR ID: D020110.1    (Back to Top)
Start Date Start Time End Date End Time Data Quality Metric
2002-01-08 05:28:00 2002-01-08 07:14:00 Incorrect
Subject: SGP/SONDE/C1 - Bad temperature in SGP/CF sounding 20020108:0528
Affected Datastreams: sgpsondewnpnC1.a1
Description Temperature values in this sounding went from 3.5 degC at the surface to -33.3 degC at the next sample. It appears that all the remaining temperature values have an approximate -35 degC offset. The pressure and RH values appear reasonable.
Measurements
  • tdry (Dry Bulb Temperature)
  • dp (Dewpoint Temperature)
 
DQR ID: D030409.1    (Back to Top)
Start Date Start Time End Date End Time Data Quality Metric
2003-04-06 11:44:00 2003-04-06 12:03:00 Incorrect
Subject: SGP/Sonde/C1 - Bad RH in sounding
Affected Datastreams: sgpsondewnpnC1.a1
Description The RH sensor heating circuit was out of synch from about 400 sec after launch until the circuit was turned off whent he sounding temperature reached approximately 233 degK (-40 degC) about 1500 sec after launch. During this time period the reported RH oscillates between reasonable values and near-zero values.
Measurements
  • dp (Dewpoint Temperature)
  • rh (Relative Humidity)
 
DQR ID: D030614.1    (Back to Top)
Start Date Start Time End Date End Time Data Quality Metric
2003-06-09 17:30:00 2003-06-09 17:37:00 Incorrect
Subject: SGP/SONDE/C1 - Broken temperature sensor
Affected Datastreams: sgpsondewnpnC1.b1
Description The temperature sensor broke at launch on this sounding. All of the temperature-related data (tdry, rh, dp) are incorrect.
Measurements
  • tdry (Dry Bulb Temperature)
  • dp (Dewpoint Temperature)
  • rh (Relative Humidity)
 
DQR ID: D040415.2    (Back to Top)
Start Date Start Time End Date End Time Data Quality Metric
2004-04-13 12:29:00 2004-04-13 13:01:00 Incorrect
Subject: SGP/SONDE/C1 - Temperature sensor broke high into the sounding
Affected Datastreams: sgpsondewnpnC1.b1
Description The temperature sensor on this radiosonde appeared to break 56 minutes and 22 seconds into the sounding at an altitude of 16570 m. All the data below this point are good; only the data above this point to the end of the sounding (88 minutes and 14 seconds) are bad.
Measurements
  • tdry (Dry Bulb Temperature)
  • dp (Dewpoint Temperature)
  • rh (Relative Humidity)
 
DQR ID: D021123.2    (Back to Top)
Start Date Start Time End Date End Time Data Quality Metric
2002-11-20 02:25:00 2002-11-20 04:12:00 Suspect
Subject: SGP/SONDE/C1 - Interference CF sounding 20021120:0225
Affected Datastreams: sgpsondewnpnC1.b1
Description Like several soundings on 11/19, this sounding was affected by interference from another radiosonde.
Measurements
  • lon (East longitude)
  • pres (Pressure)
  • lat (North latitude)
  • tdry (Dry Bulb Temperature)
  • base_time (Base time in Epoch)
  • rh (Relative Humidity)
  • asc (Ascent Rate)
  • v_wind (Northward Wind Component)
  • time_offset (Time offset from base_time)
  • alt (Altitude above mean sea level)
  • wspd (Wind Speed)
  • u_wind (Eastward Wind Component)
  • deg (Wind Direction)
  • dp (Dewpoint Temperature)
  • wstat (Wind Status)
 
DQR ID: D030411.2    (Back to Top)
Start Date Start Time End Date End Time Data Quality Metric
2003-04-06 22:38:00 2003-04-06 22:38:00 Incorrect
Subject: SGP/Sonde/C1 - Incorrect surface temperature on CF sounding
Affected Datastreams: sgpsondewnpnC1.b1
Description It appears that the operator entered an incorrect value for surface temperature. Rather than 43.2 degC in the file, the value is most likely 19. degC (thwaps reading 19.4, first sonde reading aloft 18.6).
Measurements
  • tdry (Dry Bulb Temperature)
 
DQR ID: D060630.1    (Back to Top)
Start Date Start Time End Date End Time Data Quality Metric
2006-06-17 00:00:00 2006-06-21 23:59:00 Note
Subject: SGP/SONDE/C1 - No Wind/Lat/Lon Data in Sonde Files
Affected Datastreams: sgpsondewnpnC1.b1
Description The wind finding hardware failed so that no wind or latitude/longitude data was collected on the launches for these days.
Measurements
  • lon (East longitude)
  • lat (North latitude)
  • u_wind (Eastward Wind Component)
  • v_wind (Northward Wind Component)
  • wspd (Wind Speed)
  • wstat (Wind Status)
 
DQR ID: D020626.35    (Back to Top)
Start Date Start Time End Date End Time Data Quality Metric
2002-06-19 23:29:00 2002-06-20 00:36:00 Incorrect
Subject: SGP/SONDE/C1 - Bad Temperature Sensor
Affected Datastreams: sgpsondewnpnC1.a1
Description It appears that the temperature sensor broke shortly after launch. As a result, the temperature and dewpoint values are incorrect.
Measurements
  • tdry (Dry Bulb Temperature)
  • dp (Dewpoint Temperature)
  • rh (Relative Humidity)
 
DQR ID: D160317.9    (Back to Top)
Start Date Start Time End Date End Time Data Quality Metric
2016-01-19 18:28:58 2016-01-19 18:29:28 Missing
2016-01-26 18:12:04 2016-01-26 18:50:46 Missing
2016-02-11 17:28:00 2016-02-11 18:56:20 Missing
2016-02-04 17:37:14 2016-02-04 18:43:52 Missing
2016-02-09 17:27:00 2016-02-09 18:39:16 Missing
2016-01-30 17:57:08 2016-01-30 19:04:44 Missing
2016-02-07 17:27:00 2016-02-07 18:37:02 Missing
2016-02-02 17:45:16 2016-02-02 18:57:38 Missing
2016-02-06 17:38:18 2016-02-06 18:33:40 Missing
2016-02-13 11:32:00 2016-02-13 11:59:58 Missing
2016-02-12 17:26:00 2016-02-12 18:44:02 Missing
2016-01-24 18:08:36 2016-01-24 18:45:22 Missing
2016-01-27 18:08:26 2016-01-27 18:45:10 Missing
2016-02-16 11:30:00 2016-02-16 12:00:04 Missing
2016-02-03 17:41:46 2016-02-03 18:26:36 Missing
2016-02-05 17:31:04 2016-02-05 18:11:18 Missing
2016-01-23 18:12:30 2016-01-23 18:49:12 Missing
2016-01-28 18:03:48 2016-01-28 18:24:28 Missing
2016-01-29 18:00:04 2016-01-29 18:58:30 Missing
2016-01-20 18:25:48 2016-01-20 18:42:52 Missing
2016-02-01 17:48:50 2016-02-01 18:49:20 Missing
2016-01-21 18:21:34 2016-01-21 19:07:56 Missing
Subject: SGP/SONDE/C1 - Instrument Winds/Lat-Lon Missing
Affected Datastreams: sgpsondewnprC1.a1
Description Unknown issues caused GPS derived quantities to be missing for the time periods listed. Wind speed, direction, u and v components, and lat/lon missing
Measurements
  • lon (East longitude)
  • qc_u_wind (Quality check results on field: Eastward Wind Component)
  • lat (North latitude)
  • qc_deg (Quality check results on field: Wind Direction)
  • qc_v_wind (Quality check results on field: Northward Wind Component)
  • v_wind (Northward Wind Component)
  • wspd (Wind Speed)
  • u_wind (Eastward Wind Component)
  • deg (Wind Direction)
  • qc_wspd (Quality check results on field: Wind Speed)
 
DQR ID: D170403.3    (Back to Top)
Start Date Start Time End Date End Time Data Quality Metric
2017-03-13 11:00:00 2017-03-15 14:37:00 Missing
Subject: SGP/SONDE/C1 - Instrument
Affected Datastreams: sgpsondeC1.a0
Description Flights were not completed due to problems with equipment.
Measurements
  • qc_asc (Quality check results on field: Ascent Rate)
  • qc_u_wind (Quality check results on field: Eastward Wind Component)
  • time (Time offset from midnight)
  • rh (Relative Humidity)
  • qc_pres (Quality check results on field: Pressure)
  • dp (Dewpoint Temperature)
  • wspd (Wind Speed)
  • wstat (Wind Status)
  • lat (North latitude)
  • qc_rh (Quality check results on field: Relative Humidity)
  • qc_dp (Quality check results on field: Dewpoint Temperature)
  • time_offset (Time offset from base_time)
  • alt (Altitude above mean sea level)
  • qc_wspd (Quality check results on field: Wind Speed)
  • lon (East longitude)
  • pres (Pressure)
  • qc_time (Quality check results on field: Time offset from midnight)
  • tdry (Dry Bulb Temperature)
  • deg (Wind Direction)
  • qc_tdry (Quality check results on field: Dry Bulb Temperature)
  • qc_deg (Quality check results on field: Wind Direction)
  • base_time (Base time in Epoch)
  • qc_v_wind (Quality check results on field: Northward Wind Component)
  • asc (Ascent Rate)
  • v_wind (Northward Wind Component)
  • u_wind (Eastward Wind Component)
 
DQR ID: D150422.1    (Back to Top)
Start Date Start Time End Date End Time Data Quality Metric
2015-04-16 23:28:00 2015-04-17 00:43:22 Incorrect
Subject: SGP/SONDE/C1 - RH sensor failure
Affected Datastreams: sgpsondeC1.a1
Description One or both of the RH sensors failed during this flight. RH and dew point data is incorrect.
Measurements
  • dp (Dewpoint Temperature)
  • rh (Relative Humidity)
 
DQR ID: D051121.1    (Back to Top)
Start Date Start Time End Date End Time Data Quality Metric
2005-04-13 23:46:00 2005-04-15 17:32:00 Incorrect
Subject: SGP/SONDE/C1 - Sonde RH values incorrect
Affected Datastreams: sgpsondewnpnC1.b1
Description RH values for all sondes launched during this time were incorrect due to a faulty Ground Check set which damaged or conditioned the RH sensor improperly.
Measurements
  • dp (Dewpoint Temperature)
  • rh (Relative Humidity)
 
DQR ID: D050510.1    (Back to Top)
Start Date Start Time End Date End Time Data Quality Metric
2005-04-26 17:26:00 2005-04-26 19:10:00 Suspect
Subject: SGP/SONDE/C1 - Surface pressure bad and other data noisy
Affected Datastreams: sgpsondewnpnC1.b1
Description I was checking this sounding because the surface pressure entered by the operator was considerably higher than that recorded by the TWHAPS and SMOS. I'm not sure why, but the pressure data are very noisy while the sonde is on the ground (which accounts for the incorrect surface pressure) and the RH data aloft do not look terrible but do not look great either.
Measurements
  • lon (East longitude)
  • pres (Pressure)
  • lat (North latitude)
  • tdry (Dry Bulb Temperature)
  • base_time (Base time in Epoch)
  • u_wind (Eastward Wind Component)
  • rh (Relative Humidity)
  • asc (Ascent Rate)
  • wspd (Wind Speed)
  • time_offset (Time offset from base_time)
  • dp (Dewpoint Temperature)
  • alt (Altitude above mean sea level)
  • wstat (Wind Status)
  • v_wind (Northward Wind Component)
  • deg (Wind Direction)
 
DQR ID: D030419.2    (Back to Top)
Start Date Start Time End Date End Time Data Quality Metric
2003-04-15 23:32:00 2003-04-16 01:24:00 Incorrect
Subject: SGP/SONDE/C1 - Broken Temperature Sensor
Affected Datastreams: sgpsondewnpnC1.b1
Description The temperature sensor broke shortly after launch as a result all variables that are affected by temperature are incorrect.
Measurements
  • tdry (Dry Bulb Temperature)
  • dp (Dewpoint Temperature)
  • rh (Relative Humidity)
 
DQR ID: D100803.3    (Back to Top)
Start Date Start Time End Date End Time Data Quality Metric
2002-06-12 05:33:00 2002-06-12 05:33:00 Incorrect
Subject: SGP/SONDE/C1 - Sensor failure
Affected Datastreams: sgpsondewnpnC1.b1
Description Temperature sensor failure on sonde. Data is incorrect, do not use.
Measurements
  • tdry (Dry Bulb Temperature)
  • dp (Dewpoint Temperature)
  • rh (Relative Humidity)
 
DQR ID: D080829.2    (Back to Top)
Start Date Start Time End Date End Time Data Quality Metric
2006-09-03 05:34:00 2006-09-03 08:34:00 Suspect
2006-08-14 11:00:00 2006-08-14 12:00:00 Suspect
2006-09-11 05:32:00 2006-09-11 08:32:00 Suspect
2006-09-12 11:31:00 2006-09-12 14:31:00 Suspect
2006-09-02 17:34:00 2006-09-02 20:34:00 Suspect
2006-08-26 11:34:00 2006-08-26 14:34:00 Suspect
2006-08-06 11:00:00 2006-08-06 18:00:00 Suspect
2006-09-04 17:31:00 2006-09-04 20:31:00 Suspect
2006-08-28 05:33:00 2006-08-28 08:33:00 Suspect
2006-09-04 11:34:00 2006-09-04 14:34:00 Suspect
2006-09-05 11:31:00 2006-09-05 14:31:00 Suspect
2006-09-02 11:35:00 2006-09-02 14:35:00 Suspect
2006-09-13 11:31:00 2006-09-13 14:31:00 Suspect
2006-09-14 11:31:00 2006-09-14 14:31:00 Suspect
2006-09-03 17:30:00 2006-09-03 20:30:00 Suspect
2006-09-03 11:30:00 2006-09-03 14:30:00 Suspect
2006-08-16 11:00:00 2006-08-16 12:00:00 Suspect
2006-08-25 11:36:00 2006-08-25 14:36:00 Suspect
2006-08-13 23:00:00 2006-08-13 23:59:00 Suspect
2006-08-12 11:00:00 2006-08-12 23:59:00 Suspect
Subject: SGP/SONDE/C1 - Suspect RH profile from 150-350 m above ground level
Affected Datastreams: sgpsondewnpnC1.b1
Description Several radiosondes were noticed to have a very stark dry layer between 150 m and 350 m, where the RH dropped from approximately 60-80% (which I would take as close to the ambient conditions) to less than 2%. The character of these dropouts look like instrument issues, as it only a handful of radiosondes that appear to be affected. The quicklook images from the Raman lidar does not show any very dry layers, thus supporting the hypothesis that the RH measurements from these radiosondes (at least in this small ~200 m level) are in error. I should note that the temperature profiles look normal.
Measurements
  • dp (Dewpoint Temperature)
  • rh (Relative Humidity)
 
DQR ID: D170512.4    (Back to Top)
Start Date Start Time End Date End Time Data Quality Metric
2017-05-03 17:27:00 2017-05-06 23:28:00 Missing
Subject: SGP/SONDE/C1 - Instrument
Affected Datastreams: sgpsondewrpnC1.a1
Description Potential GPS timing error. Awaiting response from Vaisala engineering on cause. Problem corrected itself.
Measurements
  • lon (East longitude)
  • deg (Wind Direction)
  • wspd (Wind Speed)
  • lat (North latitude)
 
DQR ID: D040219.1    (Back to Top)
Start Date Start Time End Date End Time Data Quality Metric
2004-02-09 05:30:00 2004-02-09 06:01:00 Incorrect
Subject: SGP/SONDE/C1 - Bad RH Data
Affected Datastreams: sgpsondewnpnC1.b1
Description The RH values during the first part of this sounding oscillate between reasonable values and near-zero values. The oscillation seems to be related to failure of the RH sensor heating process.
Measurements
  • dp (Dewpoint Temperature)
  • rh (Relative Humidity)
 
DQR ID: D041013.4    (Back to Top)
Start Date Start Time End Date End Time Data Quality Metric
2004-01-21 05:30:00 2004-01-21 06:30:00 Missing
2004-01-16 23:30:00 2004-01-17 18:30:00 Missing
2004-01-18 05:30:00 2004-01-18 06:30:00 Missing
Subject: SGP/SONDE/C1 - Scheduled Soundings Missed
Affected Datastreams: sgpsondewnpnC1.b1
Description The following scheduled sonde launches were missed due to computer system failures: 20040116.2330 20040117.0530 20040117.1130 20040117.1730 20040118.0530 20040121.0530
Measurements
  • lon (East longitude)
  • pres (Pressure)
  • lat (North latitude)
  • tdry (Dry Bulb Temperature)
  • base_time (Base time in Epoch)
  • rh (Relative Humidity)
  • asc (Ascent Rate)
  • wspd (Wind Speed)
  • time_offset (Time offset from base_time)
  • wstat (Wind Status)
  • alt (Altitude above mean sea level)
  • u_wind (Eastward Wind Component)
  • deg (Wind Direction)
  • dp (Dewpoint Temperature)
  • v_wind (Northward Wind Component)
 
DQR ID: D060303.1    (Back to Top)
Start Date Start Time End Date End Time Data Quality Metric
2004-01-19 23:31:00 2004-01-20 01:01:00 Note
2004-01-19 11:36:00 2004-01-19 13:16:00 Note
2004-01-18 11:38:00 2004-01-18 12:52:00 Note
2004-01-19 05:31:00 2004-01-19 07:11:00 Note
2004-01-20 17:28:00 2004-01-20 19:28:00 Note
2004-01-17 23:31:00 2004-01-18 01:08:00 Note
2004-01-20 23:30:00 2004-01-21 01:30:00 Note
2004-01-18 17:29:00 2004-01-18 18:52:00 Note
2004-01-20 05:31:00 2004-01-20 07:03:00 Note
2004-01-19 17:23:00 2004-01-19 17:52:00 Note
2004-01-18 23:39:00 2004-01-19 01:11:00 Note
2004-01-21 17:31:00 2004-01-21 19:31:00 Note
2004-01-20 11:32:00 2004-01-20 13:32:00 Note
Subject: SGP/SONDE/C1 - DigiCORAIII failed, replaced with S01/S02 launches
Affected Datastreams: sgpsondewnpnC1.b1
Description The digiCORA-III failed on Saturday 2004-01-17. The operators reported that they were unable to load the software and conduct normal soundings. Following procedure, they conducted the regular soundings by using the S01/S02 systems as allowed by the AIRS IOP schedule. The netCDF header fields "input_source" and "facility_id" will mention which of the S01/S02 systems was used in these launches.
Measurements
  • alt (Altitude above mean sea level)
  • lon (East longitude)
  • lat (North latitude)
 
DQR ID: D050725.1    (Back to Top)
Start Date Start Time End Date End Time Data Quality Metric
2005-07-17 23:47:00 2005-07-18 01:41:00 Incorrect
Subject: SGP/SONDE/C1 - Bad RH Data
Affected Datastreams: sgpsondewnpnC1.b1
Description The RH values below 6 km are incorrect. The problem relates to a failure of the GC25 ground check set used before this particular sounding. The failure seems to have affected the sensor calibration with the effect that one of the two sensors was reading artificially high. Because the internal processing software uses the highest of the two sensor readings, the bad sensor value is chosen whenever it is not heated.
Measurements
  • dp (Dewpoint Temperature)
  • rh (Relative Humidity)
 
DQR ID: D050912.2    (Back to Top)
Start Date Start Time End Date End Time Data Quality Metric
2005-09-09 11:32:00 2005-09-09 13:32:00 Incorrect
Subject: SGP/SONDE/C1 - Temperature/RH incorrect
Affected Datastreams: sgpsondewnpnC1.b1
Description The temperature throughout this sounding is too high and as a result the RH values will be incorrect as well. I'm not sure what is wrong here but the operators noted reasonable values (18.1 degC, 87%) in the log before launch. Review of the raw data, however, shows the sonde reporting temperatures nearly 20 degC higher. I suppose it is possible that the operator entered into the log the reference temperature from the GC25 ground check set rather than the temperature reported by the sonde - I can't think of any other explanation - there is no doubt that the temperature sensor on this sonde was bad.
Measurements
  • tdry (Dry Bulb Temperature)
  • dp (Dewpoint Temperature)
  • rh (Relative Humidity)
 
DQR ID: D130617.4    (Back to Top)
Start Date Start Time End Date End Time Data Quality Metric
2013-06-07 23:42:00 2013-06-07 23:42:00 Missing
Subject: SGP/SONDE/C1 - Missing WS/WD/Lat/Lon
Affected Datastreams: sgpsondewnpnC1.b1
Description This launch is missing wind speed, wind direction, latitude, and longitude data.
Measurements
  • lon (East longitude)
  • lat (North latitude)
  • v_wind (Northward Wind Component)
  • wspd (Wind Speed)
  • u_wind (Eastward Wind Component)
  • deg (Wind Direction)
 
DQR ID: D030122.1    (Back to Top)
Start Date Start Time End Date End Time Data Quality Metric
2003-01-19 11:34:00 2003-01-19 12:59:00 Incorrect
Subject: SGP/SONDE/C1 - Broken temperature sensor SGP/CF sounding
Affected Datastreams: sgpsondewnpnC1.b1
Description The radiosonde temperature sensor apparently broke during launch. This results in bad temperature, dew point, and rh data.
Measurements
  • tdry (Dry Bulb Temperature)
  • dp (Dewpoint Temperature)
  • rh (Relative Humidity)
 
DQR ID: D040127.2    (Back to Top)
Start Date Start Time End Date End Time Data Quality Metric
2004-01-16 20:15:00 2004-01-16 21:51:00 Incorrect
Subject: SGP/SONDE/C1 - Bad RH Data
Affected Datastreams: sgpsondewnpnC1.b1
Description The RH values during the first half of this sounding oscillate between reasonable values and near-zero values. The oscillation is irregular and seems to be related to failure of the RH sensor heating process.
Measurements
  • dp (Dewpoint Temperature)
  • rh (Relative Humidity)
 
DQR ID: D050201.1    (Back to Top)
Start Date Start Time End Date End Time Data Quality Metric
2005-01-19 05:31:00 2005-01-19 07:06:00 Suspect
Subject: SGP/SONDE/C1 - Possibly bad pressure sensor or operator data entry error
Affected Datastreams: sgpsondewnpnC1.b1
Description There is a discrepency between the surface pressure and temperature data entered by the operator and that recorded by the THWAPS. Review of the raw data from the radiosonde shows that the pressure was periodically varying by as much as 12 hPa (~988 to 1000)in the time period before launch. The operator entry of 998.2 is at the high end of this range - the concurrent THWAPS reading was about 988.4 at the low end. The operator entered temperature 6.2 degC is considerably higher than the THWAPS value of 1.8. The pre-flight log entry for this sounding is missing from the OMIS database. If not for the extremely unstable pressure reading I would have assumed this was an operator error. It will take some more research to figure out what is going on.
Measurements
  • lon (East longitude)
  • pres (Pressure)
  • lat (North latitude)
  • tdry (Dry Bulb Temperature)
  • base_time (Base time in Epoch)
  • rh (Relative Humidity)
  • asc (Ascent Rate)
  • v_wind (Northward Wind Component)
  • time_offset (Time offset from base_time)
  • wstat (Wind Status)
  • alt (Altitude above mean sea level)
  • u_wind (Eastward Wind Component)
  • deg (Wind Direction)
  • wspd (Wind Speed)
  • dp (Dewpoint Temperature)
 
DQR ID: D050510.2    (Back to Top)
Start Date Start Time End Date End Time Data Quality Metric
2005-04-29 23:29:00 2005-04-30 01:11:00 Incorrect
Subject: SGP/SONDE/C1 - Surface pressure incorrect
Affected Datastreams: sgpsondewnpnC1.b1
Description I think the operator inadvdertently typed an 89 instead of a 78 when entering the surface pressure value. The value entered is 989.9 hPa but the value shown in the raw data file at launch is 978.9. As a result, the absolute altitudes in this sounding will be slightly incorrect as will be the ascent rate during the first 30 seconds of flight.
Measurements
  • alt (Altitude above mean sea level)
  • asc (Ascent Rate)
 
DQR ID: D040219.2    (Back to Top)
Start Date Start Time End Date End Time Data Quality Metric
2004-02-02 05:30:00 2004-02-02 08:26:00 Incorrect
Subject: SGP/SONDE/C1 - Surface pressure incorrect
Affected Datastreams: sgpsondewnpnC1.b1
Description I think the operator inadvdertently transposed to digits when entering the surface pressure value. The value entered is 987.0 hPa but the value shown in the raw data file at launch is 978.0. As a result, the absolute altitudes in this sounding will be slightly incorrect as will be the ascent rate during the first 30 seconds of flight.
Measurements
  • alt (Altitude above mean sea level)
  • asc (Ascent Rate)
 
DQR ID: D050811.5    (Back to Top)
Start Date Start Time End Date End Time Data Quality Metric
2005-08-01 11:32:00 2005-08-01 13:16:36 Incorrect
Subject: SGP/SONDE/C1 - Bad T/RH and surface P.
Affected Datastreams: sgpsondewnpnC1.b1
Description Apparently multiple failures. The radiosonde temperature sensor broke on launch causing an approximate 35 degC negative offset and as a result, the RH is incorrect. Furthermore, it appears that the pressure sensor was off by approximately 4 hPa, though this would not affect the altitude calculation, the absolute pressure is wrong.
Measurements
  • pres (Pressure)
  • tdry (Dry Bulb Temperature)
  • dp (Dewpoint Temperature)
  • rh (Relative Humidity)
 
DQR ID: D020909.1    (Back to Top)
Start Date Start Time End Date End Time Data Quality Metric
2002-09-06 17:27:00 2002-09-06 18:54:00 Incorrect
Subject: SGP/SONDE/C1 - Bad Temperature Sensor
Affected Datastreams: sgpsondewnpnC1.a1
Description It appears that the temperature sensor broke upon launch and therefore the reported temperature is approximately 40 degC too low.
Measurements
  • tdry (Dry Bulb Temperature)
  • dp (Dewpoint Temperature)
  • rh (Relative Humidity)