Data Quality Reports for Session: 100366 User: mcfarlan Completed: 07/06/2006

TABLE OF CONTENTS

DQR IDSubjectData Streams Affected
D980126.1Incorrect radiosonde serial numberssgpsondewrpnB1.a0, sgpsondewrpnB1.a1, sgpsondewrpnB4.a0, sgpsondewrpnB4.a1,
sgpsondewrpnB5.a0, sgpsondewrpnB5.a1, sgpsondewrpnB6.a0, sgpsondewrpnB6.a1, sgpsondewrpnC1.a0,
sgpsondewrpnC1.a1
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 : D980126.1
Start DateStart TimeEnd DateEnd Time
01/01/1998000012/31/19992359
Subject:
Incorrect radiosonde serial numbers
DataStreams:sgpsondewrpnB1.a0, sgpsondewrpnB1.a1, sgpsondewrpnB4.a0, sgpsondewrpnB4.a1,
sgpsondewrpnB5.a0, sgpsondewrpnB5.a1, sgpsondewrpnB6.a0, sgpsondewrpnB6.a1, sgpsondewrpnC1.a0,
sgpsondewrpnC1.a1
Description:
Radiosondes manufactured at Vaisala's Woburn, MA factory during the first
of January 1998 have incorrect serial numbers.  Instead of being numbered
8012XXXXX these sondes are numbered 7012XXXXX.  Vaisala has been informed
of this, has confirmed the problem, and has corrected their numbering for
all subsequent sondes.  163 incorrectly numbered sondes were shipped to ARM
on 1/9/98.  Some have been used at the CF since 1/19/98:1430.
Measurements:sgpsondewrpnC1.a0:
  • surface wind speed(wspd)
  • Ascent Rate(asc)
  • east longitude for all the input platforms.(lon)
  • Surface dew point temperature(dp)
  • north latitude for all the input platforms.(lat)
  • altitude above sea levelaltunits(alt)
  • Time offset of tweaks from base_time(time_offset)
  • pressure at constant pressure surface(pres)
  • Relative humidity scaled, by total column amount from MWR(rh)
  • Dry-Bulb Temperature(tdry)
  • Wind Status(wstat)
  • Wind Direction(deg)
  • Time offset from base_time(base_time)
sgpsondewrpnB5.a1:
  • Ascent Rate(asc)
  • Dry-Bulb Temperature(tdry)
  • pressure at constant pressure surface(pres)
  • Time offset from base_time(base_time)
  • Wind Direction(deg)
  • Time offset of tweaks from base_time(time_offset)
  • altitude above sea levelaltunits(alt)
  • north latitude for all the input platforms.(lat)
  • model meridional wind velocity(v_wind)
  • surface wind speed(wspd)
  • Surface dew point temperature(dp)
  • east longitude for all the input platforms.(lon)
  • model zonal wind velocity(u_wind)
  • Wind Status(wstat)
  • Relative humidity scaled, by total column amount from MWR(rh)
sgpsondewrpnB4.a0:
  • Time offset of tweaks from base_time(time_offset)
  • Dry-Bulb Temperature(tdry)
  • pressure at constant pressure surface(pres)
  • surface wind speed(wspd)
  • Relative humidity scaled, by total column amount from MWR(rh)
  • altitude above sea levelaltunits(alt)
  • Wind Status(wstat)
  • Ascent Rate(asc)
  • east longitude for all the input platforms.(lon)
  • Time offset from base_time(base_time)
  • Surface dew point temperature(dp)
  • Wind Direction(deg)
  • north latitude for all the input platforms.(lat)
sgpsondewrpnB1.a0:
  • Wind Direction(deg)
  • north latitude for all the input platforms.(lat)
  • Ascent Rate(asc)
  • surface wind speed(wspd)
  • Dry-Bulb Temperature(tdry)
  • Relative humidity scaled, by total column amount from MWR(rh)
  • altitude above sea levelaltunits(alt)
  • pressure at constant pressure surface(pres)
  • Wind Status(wstat)
  • Time offset from base_time(base_time)
  • Time offset of tweaks from base_time(time_offset)
  • Surface dew point temperature(dp)
  • east longitude for all the input platforms.(lon)
sgpsondewrpnB6.a0:
  • north latitude for all the input platforms.(lat)
  • Time offset from base_time(base_time)
  • Wind Direction(deg)
  • Surface dew point temperature(dp)
  • surface wind speed(wspd)
  • east longitude for all the input platforms.(lon)
  • Time offset of tweaks from base_time(time_offset)
  • altitude above sea levelaltunits(alt)
  • Ascent Rate(asc)
  • Wind Status(wstat)
  • Relative humidity scaled, by total column amount from MWR(rh)
  • pressure at constant pressure surface(pres)
  • Dry-Bulb Temperature(tdry)
sgpsondewrpnB5.a0:
  • Time offset of tweaks from base_time(time_offset)
  • Wind Direction(deg)
  • Time offset from base_time(base_time)
  • Dry-Bulb Temperature(tdry)
  • altitude above sea levelaltunits(alt)
  • Ascent Rate(asc)
  • Surface dew point temperature(dp)
  • Wind Status(wstat)
  • north latitude for all the input platforms.(lat)
  • Relative humidity scaled, by total column amount from MWR(rh)
  • east longitude for all the input platforms.(lon)
  • pressure at constant pressure surface(pres)
  • surface wind speed(wspd)
sgpsondewrpnB4.a1:
  • Wind Status(wstat)
  • Time offset of tweaks from base_time(time_offset)
  • model meridional wind velocity(v_wind)
  • Surface dew point temperature(dp)
  • north latitude for all the input platforms.(lat)
  • Wind Direction(deg)
  • surface wind speed(wspd)
  • Relative humidity scaled, by total column amount from MWR(rh)
  • pressure at constant pressure surface(pres)
  • Dry-Bulb Temperature(tdry)
  • Ascent Rate(asc)
  • east longitude for all the input platforms.(lon)
  • model zonal wind velocity(u_wind)
  • altitude above sea levelaltunits(alt)
  • Time offset from base_time(base_time)
sgpsondewrpnB6.a1:
  • surface wind speed(wspd)
  • Relative humidity scaled, by total column amount from MWR(rh)
  • east longitude for all the input platforms.(lon)
  • altitude above sea levelaltunits(alt)
  • pressure at constant pressure surface(pres)
  • Wind Status(wstat)
  • Time offset from base_time(base_time)
  • model meridional wind velocity(v_wind)
  • Time offset of tweaks from base_time(time_offset)
  • Dry-Bulb Temperature(tdry)
  • model zonal wind velocity(u_wind)
  • Wind Direction(deg)
  • Surface dew point temperature(dp)
  • Ascent Rate(asc)
  • north latitude for all the input platforms.(lat)
sgpsondewrpnC1.a1:
  • Relative humidity scaled, by total column amount from MWR(rh)
  • north latitude for all the input platforms.(lat)
  • east longitude for all the input platforms.(lon)
  • model zonal wind velocity(u_wind)
  • Dry-Bulb Temperature(tdry)
  • Time offset from base_time(base_time)
  • Surface dew point temperature(dp)
  • Ascent Rate(asc)
  • altitude above sea levelaltunits(alt)
  • Wind Direction(deg)
  • model meridional wind velocity(v_wind)
  • Time offset of tweaks from base_time(time_offset)
  • Wind Status(wstat)
  • pressure at constant pressure surface(pres)
  • surface wind speed(wspd)
sgpsondewrpnB1.a1:
  • Wind Direction(deg)
  • Dry-Bulb Temperature(tdry)
  • Wind Status(wstat)
  • Ascent Rate(asc)
  • model zonal wind velocity(u_wind)
  • Surface dew point temperature(dp)
  • Time offset of tweaks from base_time(time_offset)
  • pressure at constant pressure surface(pres)
  • east longitude for all the input platforms.(lon)
  • north latitude for all the input platforms.(lat)
  • model meridional wind velocity(v_wind)
  • altitude above sea levelaltunits(alt)
  • surface wind speed(wspd)
  • Relative humidity scaled, by total column amount from MWR(rh)
  • Time offset from base_time(base_time)

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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)

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END OF DATA