Data Quality Reports for Session: 100434 User: ktaniguchi Completed: 07/11/2006


TABLE OF CONTENTS

DQR IDSubjectData Streams Affected
D020110.1SGP/SONDE/C1 - Bad temperature in SGP/CF sounding 20020108:0528sgpsondewnpnC1.a1, sgpsondewnpnC1.b1
D020524.27SGP/SONDE/C1 - CF sounding 20020522:1130 bad temperature/RHsgpsondewnpnC1.a1, sgpsondewnpnC1.b1
D020526.1SGP/SONDE/C1 - Bad T/RH data in CF sounding 20020523:1129sgpsondewnpnC1.a1, sgpsondewnpnC1.b1
D020611.2SGP/SONDE/C1 - CF sounding 20020609:0229 bad temp/rh/etcsgpsondewnpnC1.a1, sgpsondewnpnC1.b1
D020626.34SGP/SONDE/C1 - Incorrect Surface PressuresgpsondewnpnC1.a1, sgpsondewnpnC1.b1
D020626.35SGP/SONDE/C1 - Bad Temperature SensorsgpsondewnpnC1.a1, sgpsondewnpnC1.b1
D020703.1SGP/SONDE/C1 - Temperature sensor failuresgpqmemwrcolC1.c1, sgpsondewnpnC1.a1, sgpsondewnpnC1.b1
D020909.1SGP/SONDE/C1 - Bad Temperature SensorsgplssondeC1.c1, sgpqmemwrcolC1.c1, sgpsondewnpnC1.a1, sgpsondewnpnC1.b1
D020909.2SGP/SONDE/C1 - Bad Temperature SensorsgplssondeC1.c1, sgpqmemwrcolC1.c1, sgpsondewnpnC1.a1, sgpsondewnpnC1.b1
D021006.1Bad temperature sensorsgplssondeC1.c1, sgpsondewnpnC1.a1, sgpsondewnpnC1.b1
D021117.1SGP/SONDE/C1 - Questionable RH: CF sounding 11/13/2002:2044sgpsondewnpnC1.a1, sgpsondewnpnC1.b1
D021121.1SGP/SONDE/C1 - Contaminated by interferencesgpsondeC1.00, sgpsondewnpnC1.a1, sgpsondewnpnC1.b1
D021123.2SGP/SONDE/C1 - Interference CF sounding 20021120:0225sgpsondeC1.00, sgpsondewnpnC1.a1, sgpsondewnpnC1.b1
D021201.1SGP/SONDE/C1 - Questionable RH CF sounding 0211211:1130sgpsondewnpnC1.a1, sgpsondewnpnC1.b1
D990124.2SGP/SONDE - Dry bias in sonde RHsgpsondeB1.00, sgpsondeB1.a0, sgpsondeB1.a1, sgpsondeB4.00, sgpsondeB4.a0, sgpsondeB4.a1,
sgpsondeB5.00, sgpsondeB5.a0, sgpsondeB5.a1, sgpsondeB6.00, sgpsondeC1.00,
sgpsondeC1.a0, sgpsondeC1.a1, DsgpsondeB1.00, DsgpsondeB1.a0, DsgpsondeB1.a1, DsgpsondeB4.00,
DsgpsondeB4.a0, DsgpsondeB4.a1, DsgpsondeB5.00, DsgpsondeB5.a0, DsgpsondeB5.a1,
DsgpsondeC1.00, DsgpsondeC1.a0, DsgpsondeC1.a1, sgpsondeptuC1.00, DsgpsondeptuB1.00,
DsgpsondeptuB4.00, DsgpsondeptuB5.00, DsgpsondeptuB6.00, DsgpsondeptuC1.00, sgpsondewnpnB1.a0,
sgpsondewnpnB1.a1, sgpsondewnpnB4.a0, sgpsondewnpnB4.a1, sgpsondewnpnB5.a0,
sgpsondewnpnB5.a1, sgpsondewnpnB6.a0, sgpsondewnpnB6.a1, sgpsondewnpnC1.a0, sgpsondewnpnC1.a1,
sgpsondewnprC1.a0, sgpsondewnprC1.a1, sgpsondewrpnB1.00, sgpsondewrpnB1.a0,
sgpsondewrpnB1.a1, sgpsondewrpnB4.00, sgpsondewrpnB4.a0, sgpsondewrpnB4.a1, sgpsondewrpnB5.00,
sgpsondewrpnB5.a0, sgpsondewrpnB5.a1, sgpsondewrpnB6.00, sgpsondewrpnB6.a0,
sgpsondewrpnB6.a1, sgpsondewrpnC1.00, sgpsondewrpnC1.a0, sgpsondewrpnC1.a1, sgpsondewrprB1.00,
sgpsondewrprB1.a0, sgpsondewrprB1.a1, sgpsondewrprB4.00, sgpsondewrprB4.a0,
sgpsondewrprB4.a1, sgpsondewrprB5.00, sgpsondewrprB5.a0, sgpsondewrprB5.a1, sgpsondewrprC1.00,
sgpsondewrprC1.a0, sgpsondewrprC1.a1, DsgpsondeptucalcB1.c1, DsgpsondeptucalcB4.c1,
DsgpsondeptucalcB5.c1, DsgpsondeptucalcC1.c1, DsgpsondenogcwrpnB1.c1, DsgpsondenogcwrpnB4.c1,
DsgpsondenogcwrpnB5.c1, DsgpsondenogcwrpnC1.c1, DsgpsondenogcptucalcB1.c1,
DsgpsondenogcptucalcB4.c1, DsgpsondenogcptucalcB5.c1, DsgpsondenogcptucalcC1.c1


DQRID : D020110.1
Start DateStart TimeEnd DateEnd Time
01/08/2002052801/08/20020714
Subject:
SGP/SONDE/C1 - Bad temperature in SGP/CF sounding 20020108:0528
DataStreams:sgpsondewnpnC1.a1, sgpsondewnpnC1.b1
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:sgpsondewnpnC1.a1:
  • Dry-Bulb Temperature(tdry)
  • Surface dew point temperature(dp)

sgpsondewnpnC1.b1:
  • Surface dew point temperature(dp)
  • Dry-Bulb Temperature(tdry)


Back To Table of Contents

DQRID : D020524.27
Start DateStart TimeEnd DateEnd Time
05/22/2002113005/22/20021347
Subject:
SGP/SONDE/C1 - CF sounding 20020522:1130 bad temperature/RH
DataStreams:sgpsondewnpnC1.a1, sgpsondewnpnC1.b1
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:sgpsondewnpnC1.a1:
  • Dry-Bulb Temperature(tdry)
  • altitude above sea levelaltunits(alt)
  • Relative humidity scaled, by total column amount from MWR(rh)
  • Ascent Rate(asc)
  • Surface dew point temperature(dp)

sgpsondewnpnC1.b1:
  • Surface dew point temperature(dp)
  • Dry-Bulb Temperature(tdry)
  • Relative humidity scaled, by total column amount from MWR(rh)
  • Ascent Rate(asc)
  • altitude above sea levelaltunits(alt)


Back To Table of Contents

DQRID : D020526.1
Start DateStart TimeEnd DateEnd Time
05/23/2002112905/23/20021322
Subject:
SGP/SONDE/C1 - Bad T/RH data in CF sounding 20020523:1129
DataStreams:sgpsondewnpnC1.a1, 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:sgpsondewnpnC1.a1:
  • Dry-Bulb Temperature(tdry)
  • altitude above sea levelaltunits(alt)
  • Relative humidity scaled, by total column amount from MWR(rh)
  • Ascent Rate(asc)
  • Surface dew point temperature(dp)

sgpsondewnpnC1.b1:
  • Surface dew point temperature(dp)
  • Dry-Bulb Temperature(tdry)
  • Relative humidity scaled, by total column amount from MWR(rh)
  • Ascent Rate(asc)
  • altitude above sea levelaltunits(alt)


Back To Table of Contents

DQRID : D020611.2
Start DateStart TimeEnd DateEnd Time
06/09/2002022906/09/20020236
Subject:
SGP/SONDE/C1 - CF sounding 20020609:0229 bad temp/rh/etc
DataStreams:sgpsondewnpnC1.a1, sgpsondewnpnC1.b1
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:sgpsondewnpnC1.a1:
  • Dry-Bulb Temperature(tdry)
  • altitude above sea levelaltunits(alt)
  • Relative humidity scaled, by total column amount from MWR(rh)
  • Ascent Rate(asc)
  • Surface dew point temperature(dp)

sgpsondewnpnC1.b1:
  • Surface dew point temperature(dp)
  • Dry-Bulb Temperature(tdry)
  • Relative humidity scaled, by total column amount from MWR(rh)
  • Ascent Rate(asc)
  • altitude above sea levelaltunits(alt)


Back To Table of Contents

DQRID : D020626.34
Start DateStart TimeEnd DateEnd Time
06/17/2002112806/17/20021313
Subject:
SGP/SONDE/C1 - Incorrect Surface Pressure
DataStreams:sgpsondewnpnC1.a1, 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:sgpsondewnpnC1.a1:
  • altitude above sea levelaltunits(alt)
  • Ascent Rate(asc)

sgpsondewnpnC1.b1:
  • Ascent Rate(asc)
  • altitude above sea levelaltunits(alt)


Back To Table of Contents

DQRID : D020626.35
Start DateStart TimeEnd DateEnd Time
06/19/2002232906/20/20020036
Subject:
SGP/SONDE/C1 - Bad Temperature Sensor
DataStreams:sgpsondewnpnC1.a1, sgpsondewnpnC1.b1
Description:
It appears that the temperature sensor broke shortly after launch.  As a
result, the temperature and dewpoint values are incorrect.
Measurements:sgpsondewnpnC1.a1:
  • Dry-Bulb Temperature(tdry)
  • Relative humidity scaled, by total column amount from MWR(rh)
  • Surface dew point temperature(dp)

sgpsondewnpnC1.b1:
  • Surface dew point temperature(dp)
  • Dry-Bulb Temperature(tdry)
  • Relative humidity scaled, by total column amount from MWR(rh)


Back To Table of Contents

DQRID : D020703.1
Start DateStart TimeEnd DateEnd Time
06/27/2002172806/27/20021908
Subject:
SGP/SONDE/C1 - Temperature sensor failure
DataStreams:sgpqmemwrcolC1.c1, sgpsondewnpnC1.a1, sgpsondewnpnC1.b1
Description:
Temperature sensor broke at launch.  All temperature-related variables
are incorrect.
Measurements:sgpsondewnpnC1.a1:
  • Dry-Bulb Temperature(tdry)
  • Relative humidity scaled, by total column amount from MWR(rh)
  • Surface dew point temperature(dp)

sgpsondewnpnC1.b1:
  • Surface dew point temperature(dp)
  • Dry-Bulb Temperature(tdry)
  • Relative humidity scaled, by total column amount from MWR(rh)

sgpqmemwrcolC1.c1:
  • Integrated vapor column from sonde using MWR Instrument Performance Model (IPM)(integ_vap_sonde)
  • Integrated vapor column from sonde using a direct calculation (external from the
    IPM)(integ_vap_sonde_direct)


Back To Table of Contents

DQRID : D020909.1
Start DateStart TimeEnd DateEnd Time
09/06/2002172709/06/20021854
Subject:
SGP/SONDE/C1 - Bad Temperature Sensor
DataStreams:sgplssondeC1.c1, sgpqmemwrcolC1.c1, sgpsondewnpnC1.a1, sgpsondewnpnC1.b1
Description:
It appears that the temperature sensor broke upon launch and therefore the reported 
temperature is approximately 40 degC too low.
Measurements:sgpsondewnpnC1.a1:
  • Dry-Bulb Temperature(tdry)
  • Relative humidity scaled, by total column amount from MWR(rh)
  • Surface dew point temperature(dp)

sgpsondewnpnC1.b1:
  • Surface dew point temperature(dp)
  • Dry-Bulb Temperature(tdry)
  • Relative humidity scaled, by total column amount from MWR(rh)

sgpqmemwrcolC1.c1:
  • Integrated vapor column from sonde using MWR Instrument Performance Model (IPM)(integ_vap_sonde)

sgplssondeC1.c1:
  • Relative humidity scaled, by total column amount from MWR(rh)
  • Dry-Bulb Temperature(tdry)


Back To Table of Contents

DQRID : D020909.2
Start DateStart TimeEnd DateEnd Time
09/06/2002052709/06/20020718
Subject:
SGP/SONDE/C1 - Bad Temperature Sensor
DataStreams:sgplssondeC1.c1, sgpqmemwrcolC1.c1, sgpsondewnpnC1.a1, sgpsondewnpnC1.b1
Description:
It appears that the temperature sensor broke shortly after launch. Temperatures are offset 
by approxmiately (but not constantly) 40 degC.
Measurements:sgpsondewnpnC1.a1:
  • Dry-Bulb Temperature(tdry)
  • Relative humidity scaled, by total column amount from MWR(rh)
  • Surface dew point temperature(dp)

sgpsondewnpnC1.b1:
  • Surface dew point temperature(dp)
  • Dry-Bulb Temperature(tdry)
  • Relative humidity scaled, by total column amount from MWR(rh)

sgpqmemwrcolC1.c1:
  • Integrated vapor column from sonde using MWR Instrument Performance Model (IPM)(integ_vap_sonde)

sgplssondeC1.c1:
  • Relative humidity scaled, by total column amount from MWR(rh)
  • Dry-Bulb Temperature(tdry)


Back To Table of Contents

DQRID : D021006.1
Start DateStart TimeEnd DateEnd Time
10/03/2002112010/03/20021320
Subject:
Bad temperature sensor
DataStreams:sgplssondeC1.c1, sgpsondewnpnC1.a1, 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:sgpsondewnpnC1.a1:
  • altitude above sea levelaltunits(alt)
  • Surface dew point temperature(dp)
  • Dry-Bulb Temperature(tdry)
  • Relative humidity scaled, by total column amount from MWR(rh)
  • Ascent Rate(asc)

sgpsondewnpnC1.b1:
  • Surface dew point temperature(dp)
  • Relative humidity scaled, by total column amount from MWR(rh)
  • Ascent Rate(asc)
  • Dry-Bulb Temperature(tdry)
  • altitude above sea levelaltunits(alt)

sgplssondeC1.c1:
  • altitude above sea levelaltunits(alt)
  • Relative humidity scaled, by total column amount from MWR(rh)
  • Dry-Bulb Temperature(tdry)


Back To Table of Contents

DQRID : D021117.1
Start DateStart TimeEnd DateEnd Time
11/13/2002204411/13/20022205
Subject:
SGP/SONDE/C1 - Questionable RH: CF sounding 11/13/2002:2044
DataStreams:sgpsondewnpnC1.a1, 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:sgpsondewnpnC1.a1:
  • Relative humidity scaled, by total column amount from MWR(rh)
  • Surface dew point temperature(dp)

sgpsondewnpnC1.b1:
  • Surface dew point temperature(dp)
  • Relative humidity scaled, by total column amount from MWR(rh)


Back To Table of Contents

DQRID : D021121.1
Start DateStart TimeEnd DateEnd Time
11/19/2002142311/19/20021623
11/19/2002172611/19/20021917
11/19/2002202611/19/20022204
Subject:
SGP/SONDE/C1 - Contaminated by interference
DataStreams:sgpsondeC1.00, sgpsondewnpnC1.a1, 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:sgpsondewnpnC1.a1:
  • surface wind speed(wspd)
  • altitude above sea levelaltunits(alt)
  • model meridional wind velocity(v_wind)
  • Time offset from base_time(base_time)
  • Relative humidity scaled, by total column amount from MWR(rh)
  • Ascent Rate(asc)
  • Wind Direction(deg)
  • Wind Status(wstat)
  • model zonal wind velocity(u_wind)
  • Surface dew point temperature(dp)
  • Dry-Bulb Temperature(tdry)
  • Time offset of tweaks from base_time(time_offset)
  • north latitude for all the input platforms.(lat)
  • east longitude for all the input platforms.(lon)
  • pressure at constant pressure surface(pres)

sgpsondewnpnC1.b1:
  • surface wind speed(wspd)
  • model zonal wind velocity(u_wind)
  • north latitude for all the input platforms.(lat)
  • Ascent Rate(asc)
  • east longitude for all the input platforms.(lon)
  • Time offset of tweaks from base_time(time_offset)
  • model meridional wind velocity(v_wind)
  • altitude above sea levelaltunits(alt)
  • Surface dew point temperature(dp)
  • Time offset from base_time(base_time)
  • Relative humidity scaled, by total column amount from MWR(rh)
  • pressure at constant pressure surface(pres)
  • Wind Direction(deg)
  • Wind Status(wstat)
  • Dry-Bulb Temperature(tdry)

sgpsondeC1.00:
  • Raw data stream - documentation not supported(Raw data stream - documentation not supported)


Back To Table of Contents

DQRID : D021123.2
Start DateStart TimeEnd DateEnd Time
11/20/2002022511/20/20020412
Subject:
SGP/SONDE/C1 - Interference CF sounding 20021120:0225
DataStreams:sgpsondeC1.00, sgpsondewnpnC1.a1, sgpsondewnpnC1.b1
Description:
Like several soundings on 11/19, this sounding was affected by interference from another 
radiosonde.
Measurements:sgpsondewnpnC1.a1:
  • surface wind speed(wspd)
  • altitude above sea levelaltunits(alt)
  • model meridional wind velocity(v_wind)
  • Time offset from base_time(base_time)
  • Relative humidity scaled, by total column amount from MWR(rh)
  • Ascent Rate(asc)
  • Wind Direction(deg)
  • Wind Status(wstat)
  • model zonal wind velocity(u_wind)
  • Surface dew point temperature(dp)
  • Dry-Bulb Temperature(tdry)
  • Time offset of tweaks from base_time(time_offset)
  • north latitude for all the input platforms.(lat)
  • east longitude for all the input platforms.(lon)
  • pressure at constant pressure surface(pres)

sgpsondewnpnC1.b1:
  • surface wind speed(wspd)
  • model zonal wind velocity(u_wind)
  • north latitude for all the input platforms.(lat)
  • Ascent Rate(asc)
  • east longitude for all the input platforms.(lon)
  • Time offset of tweaks from base_time(time_offset)
  • model meridional wind velocity(v_wind)
  • altitude above sea levelaltunits(alt)
  • Surface dew point temperature(dp)
  • Time offset from base_time(base_time)
  • Relative humidity scaled, by total column amount from MWR(rh)
  • pressure at constant pressure surface(pres)
  • Wind Direction(deg)
  • Wind Status(wstat)
  • Dry-Bulb Temperature(tdry)

sgpsondeC1.00:
  • Raw data stream - documentation not supported(Raw data stream - documentation not supported)


Back To Table of Contents

DQRID : D021201.1
Start DateStart TimeEnd DateEnd Time
11/21/2002113011/21/20021311
Subject:
SGP/SONDE/C1 - Questionable RH CF sounding 0211211:1130
DataStreams:sgpsondewnpnC1.a1, sgpsondewnpnC1.b1
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:sgpsondewnpnC1.a1:
  • Relative humidity scaled, by total column amount from MWR(rh)
  • Surface dew point temperature(dp)

sgpsondewnpnC1.b1:
  • Surface dew point temperature(dp)
  • Relative humidity scaled, by total column amount from MWR(rh)


Back To Table of Contents

DQRID : D990124.2
Start DateStart TimeEnd DateEnd Time
05/27/1992000005/31/20022359
Subject:
SGP/SONDE - Dry bias in sonde RH
DataStreams:sgpsondeB1.00, sgpsondeB1.a0, sgpsondeB1.a1, sgpsondeB4.00, sgpsondeB4.a0, sgpsondeB4.a1,
sgpsondeB5.00, sgpsondeB5.a0, sgpsondeB5.a1, sgpsondeB6.00, sgpsondeC1.00,
sgpsondeC1.a0, sgpsondeC1.a1, DsgpsondeB1.00, DsgpsondeB1.a0, DsgpsondeB1.a1, DsgpsondeB4.00,
DsgpsondeB4.a0, DsgpsondeB4.a1, DsgpsondeB5.00, DsgpsondeB5.a0, DsgpsondeB5.a1,
DsgpsondeC1.00, DsgpsondeC1.a0, DsgpsondeC1.a1, sgpsondeptuC1.00, DsgpsondeptuB1.00,
DsgpsondeptuB4.00, DsgpsondeptuB5.00, DsgpsondeptuB6.00, DsgpsondeptuC1.00, sgpsondewnpnB1.a0,
sgpsondewnpnB1.a1, sgpsondewnpnB4.a0, sgpsondewnpnB4.a1, sgpsondewnpnB5.a0,
sgpsondewnpnB5.a1, sgpsondewnpnB6.a0, sgpsondewnpnB6.a1, sgpsondewnpnC1.a0, sgpsondewnpnC1.a1,
sgpsondewnprC1.a0, sgpsondewnprC1.a1, sgpsondewrpnB1.00, sgpsondewrpnB1.a0,
sgpsondewrpnB1.a1, sgpsondewrpnB4.00, sgpsondewrpnB4.a0, sgpsondewrpnB4.a1, sgpsondewrpnB5.00,
sgpsondewrpnB5.a0, sgpsondewrpnB5.a1, sgpsondewrpnB6.00, sgpsondewrpnB6.a0,
sgpsondewrpnB6.a1, sgpsondewrpnC1.00, sgpsondewrpnC1.a0, sgpsondewrpnC1.a1, sgpsondewrprB1.00,
sgpsondewrprB1.a0, sgpsondewrprB1.a1, sgpsondewrprB4.00, sgpsondewrprB4.a0,
sgpsondewrprB4.a1, sgpsondewrprB5.00, sgpsondewrprB5.a0, sgpsondewrprB5.a1, sgpsondewrprC1.00,
sgpsondewrprC1.a0, sgpsondewrprC1.a1, DsgpsondeptucalcB1.c1, DsgpsondeptucalcB4.c1,
DsgpsondeptucalcB5.c1, DsgpsondeptucalcC1.c1, DsgpsondenogcwrpnB1.c1, DsgpsondenogcwrpnB4.c1,
DsgpsondenogcwrpnB5.c1, DsgpsondenogcwrpnC1.c1, DsgpsondenogcptucalcB1.c1,
DsgpsondenogcptucalcB4.c1, DsgpsondenogcptucalcB5.c1, DsgpsondenogcptucalcC1.c1
Description:
Vaisala has confirmed ARM findings of an apparent dry bias in the
relative humidity measured by RS-80H radiosondes.  The cause of
the dry bias is thought to be contamination of the humidity sensor
by volatile organic substances originating from some plastic parts
of the radiosonde.  The amount of contamination is a function of
the time between the date of sonde manufacture and its use.  All
RS-80H sondes manufactured before week 34 of 1998 will show this
bias.  After week 34 of 1998 Vaisala changed its packaging to
reduce, but not eliminate the contamination problem.

Starting with RS-80 radiosonde manufactured in late June 2000 Vaisala
enclosed the sensor boom in an inert plastic shield, thereby eliminating
the contamination that caused the dry bias.

Starting in May 2001 at the SGP, May 2002 at the TWP, and later 2002
at the NSA, ARM has moved to using RS-90 radiosondes.  These sondes
are not subject to the contaminatino that caused the dry bias.

Vaisala is in the process of developing an algorithm that can be 
used to estimate the correct RH from knowledge of the sonde age.
All of the ARM sounding data have sufficient metadata available
to apply the correction.

Additionally, ARM has funded a Science Team effort (Milosevich) to
develop a 'best' correction algorithm for the RS-80 radiosonde humidity
data.  When completed this algorithm will allow us to reprocess the
accumulated RS-80 data and produce a new data platform with what we
hope will be more accurate data.
Measurements:sgpsondeB4.00:
  • Raw data stream - documentation not supported(Raw data stream - documentation not supported)

DsgpsondeB5.00:
  • (Development raw data stream - documentation not supported)

sgpsondewrpnC1.00:
  • Raw data stream - documentation not supported(Raw data stream - documentation not supported)

sgpsondewnpnC1.a1:
  • Relative humidity scaled, by total column amount from MWR(rh)
  • Surface dew point temperature(dp)

DsgpsondeptuB6.00:
  • (Development raw data stream - documentation not supported)

DsgpsondenogcptucalcB1.c1:
  • (Development data stream - documentation not supported)

sgpsondewrpnB6.a0:
  • Surface dew point temperature(dp)
  • Relative humidity scaled, by total column amount from MWR(rh)

DsgpsondeptuC1.00:
  • (Development raw data stream - documentation not supported)

sgpsondewnprC1.a0:
  • Surface dew point temperature(dp)
  • Relative humidity scaled, by total column amount from MWR(rh)

DsgpsondenogcptucalcB5.c1:
  • (Development data stream - documentation not supported)

DsgpsondeptucalcC1.c1:
  • (Development data stream - documentation not supported)

sgpsondewnpnB4.a1:
  • Relative humidity scaled, by total column amount from MWR(rh)
  • Surface dew point temperature(dp)

sgpsondeB6.00:
  • Raw data stream - documentation not supported(Raw data stream - documentation not supported)

sgpsondewrprB4.00:
  • Raw data stream - documentation not supported(Raw data stream - documentation not supported)

DsgpsondeptuB1.00:
  • (Development raw data stream - documentation not supported)

DsgpsondenogcptucalcC1.c1:
  • (Development data stream - documentation not supported)

sgpsondewrpnC1.a1:
  • Relative humidity scaled, by total column amount from MWR(rh)
  • Surface dew point temperature(dp)

sgpsondewrpnB1.a1:
  • Surface dew point temperature(dp)
  • Relative humidity scaled, by total column amount from MWR(rh)

sgpsondewrprC1.00:
  • Raw data stream - documentation not supported(Raw data stream - documentation not supported)

sgpsondewrpnB1.a0:
  • Relative humidity scaled, by total column amount from MWR(rh)
  • Surface dew point temperature(dp)

sgpsondewrprB5.a1:
  • Relative humidity scaled, by total column amount from MWR(rh)
  • Surface dew point temperature(dp)

sgpsondeB5.a1:
  • Surface dew point temperature(dp)
  • Relative humidity scaled, by total column amount from MWR(rh)

sgpsondewrprB5.00:
  • Raw data stream - documentation not supported(Raw data stream - documentation not supported)

DsgpsondeC1.00:
  • (Development raw data stream - documentation not supported)

sgpsondewrprB1.a1:
  • Surface dew point temperature(dp)
  • Relative humidity scaled, by total column amount from MWR(rh)

sgpsondeB1.00:
  • Raw data stream - documentation not supported(Raw data stream - documentation not supported)

sgpsondeptuC1.00:
  • Raw data stream - documentation not supported(Raw data stream - documentation not supported)

DsgpsondenogcptucalcB4.c1:
  • (Development data stream - documentation not supported)

DsgpsondeB1.a0:
  • (Development data stream - documentation not supported)

DsgpsondeC1.a1:
  • (Development data stream - documentation not supported)

DsgpsondeptucalcB5.c1:
  • (Development data stream - documentation not supported)

sgpsondewrprB1.00:
  • Raw data stream - documentation not supported(Raw data stream - documentation not supported)

sgpsondewrpnC1.a0:
  • Surface dew point temperature(dp)
  • Relative humidity scaled, by total column amount from MWR(rh)

sgpsondewrpnB1.00:
  • Raw data stream - documentation not supported(Raw data stream - documentation not supported)

sgpsondeB1.a0:
  • Surface dew point temperature(dp)
  • Relative humidity scaled, by total column amount from MWR(rh)

DsgpsondeC1.a0:
  • (Development data stream - documentation not supported)

DsgpsondeB4.a1:
  • (Development data stream - documentation not supported)

DsgpsondeptuB4.00:
  • (Development raw data stream - documentation not supported)

sgpsondeB1.a1:
  • Relative humidity scaled, by total column amount from MWR(rh)
  • Surface dew point temperature(dp)

sgpsondewrprB5.a0:
  • Relative humidity scaled, by total column amount from MWR(rh)
  • Surface dew point temperature(dp)

sgpsondeC1.00:
  • Raw data stream - documentation not supported(Raw data stream - documentation not supported)

sgpsondewnpnB1.a1:
  • Surface dew point temperature(dp)
  • Relative humidity scaled, by total column amount from MWR(rh)

sgpsondewrpnB6.a1:
  • Relative humidity scaled, by total column amount from MWR(rh)
  • Surface dew point temperature(dp)

sgpsondewrprC1.a0:
  • Relative humidity scaled, by total column amount from MWR(rh)
  • Surface dew point temperature(dp)

sgpsondeC1.a0:
  • Surface dew point temperature(dp)
  • Relative humidity scaled, by total column amount from MWR(rh)

sgpsondewrprC1.a1:
  • Surface dew point temperature(dp)
  • Relative humidity scaled, by total column amount from MWR(rh)

DsgpsondeptuB5.00:
  • (Development raw data stream - documentation not supported)

sgpsondewrpnB5.a0:
  • Surface dew point temperature(dp)
  • Relative humidity scaled, by total column amount from MWR(rh)

sgpsondewrprB4.a1:
  • Surface dew point temperature(dp)
  • Relative humidity scaled, by total column amount from MWR(rh)

DsgpsondeB1.a1:
  • (Development data stream - documentation not supported)

sgpsondeB5.a0:
  • Surface dew point temperature(dp)
  • Relative humidity scaled, by total column amount from MWR(rh)

sgpsondewnpnB6.a0:
  • Relative humidity scaled, by total column amount from MWR(rh)
  • Surface dew point temperature(dp)

DsgpsondeB5.a1:
  • (Development data stream - documentation not supported)

DsgpsondenogcwrpnB1.c1:
  • (Development data stream - documentation not supported)

sgpsondewrprB1.a0:
  • Relative humidity scaled, by total column amount from MWR(rh)
  • Surface dew point temperature(dp)

sgpsondewrpnB5.00:
  • Raw data stream - documentation not supported(Raw data stream - documentation not supported)

DsgpsondeB4.a0:
  • (Development data stream - documentation not supported)

DsgpsondenogcwrpnB4.c1:
  • (Development data stream - documentation not supported)

DsgpsondeB5.a0:
  • (Development data stream - documentation not supported)

sgpsondewnpnB4.a0:
  • Relative humidity scaled, by total column amount from MWR(rh)
  • Surface dew point temperature(dp)

sgpsondewnprC1.a1:
  • Relative humidity scaled, by total column amount from MWR(rh)
  • Surface dew point temperature(dp)

sgpsondewrpnB5.a1:
  • Surface dew point temperature(dp)
  • Relative humidity scaled, by total column amount from MWR(rh)

sgpsondewnpnB5.a0:
  • Surface dew point temperature(dp)
  • Relative humidity scaled, by total column amount from MWR(rh)

DsgpsondeB4.00:
  • (Development raw data stream - documentation not supported)

sgpsondewrpnB6.00:
  • Raw data stream - documentation not supported(Raw data stream - documentation not supported)

sgpsondewrprB4.a0:
  • Surface dew point temperature(dp)
  • Relative humidity scaled, by total column amount from MWR(rh)

sgpsondewnpnB1.a0:
  • Relative humidity scaled, by total column amount from MWR(rh)
  • Surface dew point temperature(dp)

sgpsondeB4.a1:
  • Surface dew point temperature(dp)
  • Relative humidity scaled, by total column amount from MWR(rh)

sgpsondeC1.a1:
  • Relative humidity scaled, by total column amount from MWR(rh)
  • Surface dew point temperature(dp)

sgpsondewrpnB4.00:
  • Raw data stream - documentation not supported(Raw data stream - documentation not supported)

DsgpsondenogcwrpnB5.c1:
  • (Development data stream - documentation not supported)

sgpsondewnpnC1.a0:
  • Surface dew point temperature(dp)
  • Relative humidity scaled, by total column amount from MWR(rh)

sgpsondewrpnB4.a0:
  • Relative humidity scaled, by total column amount from MWR(rh)
  • Surface dew point temperature(dp)

DsgpsondeB1.00:
  • (Development raw data stream - documentation not supported)

sgpsondeB4.a0:
  • Relative humidity scaled, by total column amount from MWR(rh)
  • Surface dew point temperature(dp)

sgpsondewnpnB6.a1:
  • Surface dew point temperature(dp)
  • Relative humidity scaled, by total column amount from MWR(rh)

sgpsondewrpnB4.a1:
  • Surface dew point temperature(dp)
  • Relative humidity scaled, by total column amount from MWR(rh)

sgpsondewnpnB5.a1:
  • Relative humidity scaled, by total column amount from MWR(rh)
  • Surface dew point temperature(dp)

DsgpsondeptucalcB4.c1:
  • (Development data stream - documentation not supported)

DsgpsondenogcwrpnC1.c1:
  • (Development data stream - documentation not supported)

sgpsondeB5.00:
  • Raw data stream - documentation not supported(Raw data stream - documentation not supported)

DsgpsondeptucalcB1.c1:
  • (Development data stream - documentation not supported)


Back To Table of Contents



END OF DATA