Data Quality Reports for Session: 104798 User: delta Completed: 03/15/2007


TABLE OF CONTENTS

DQR IDSubjectData Streams Affected
D940804.1Possible error in humidity ground checksgpsondewrpnC1.a0, sgpsondewrpnC1.a1
D941104.1Bad surface RH value in soundingsgpsondewrpnC1.a0, sgpsondewrpnC1.a1
D941108.2Bad surface RH value in soundingsgpsondewrpnC1.a0, sgpsondewrpnC1.a1
D941108.4CF Sonde Ground Check CorrectionssgpsondewrpnC1.a0, sgpsondewrpnC1.a1
D941213.1Questionable initial values sounding 941209:1133sgpsondewrpnC1.a0, sgpsondewrpnC1.a1
D950109.1Questionable surface value 1/2/95 11:32sgpsondewrpnC1.a0, sgpsondewrpnC1.a1
D950109.2Questionable surface value 1/3/95 11:29sgpsondewrpnC1.a0, sgpsondewrpnC1.a1
D950304.1Reprocess: Sounding 950222:0530 done in research modesgpsondewrpnC1.a0, sgpsondewrpnC1.a1
D950310.1Bad surface values in sounding 3/9/95:0530sgpsondewrpnC1.a0, sgpsondewrpnC1.a1
D950316.1Reprocess: Sounding 950315:1429 done in research modesgpsondewrpnC1.a0, sgpsondewrpnC1.a1
D950417.1Reprocess: Sounding 950413:1130 done in research modesgpsondewrpnC1.a0, sgpsondewrpnC1.a1
D950419.1Bad surface values in sounding 4/17/95 14:29sgpsondewrpnC1.a0, sgpsondewrpnC1.a1
D950816.5bad surface tdry value in sounding 17:55sgpsondewrpnC1.a0, sgpsondewrpnC1.a1
D951006.1Apparent Interference Signal in SoundingsgpsondewrpnC1.a0, sgpsondewrpnC1.a1
D951006.2Apparent Interference Signal in SoundingsgpsondewrpnC1.a0, sgpsondewrpnC1.a1
D951006.3Apparent Interference Signal in SoundingsgpsondewrpnC1.a0, sgpsondewrpnC1.a1
D951006.4Apparent Interference Signal in SoundingsgpsondewrpnC1.a0, sgpsondewrpnC1.a1
D951006.5Apparent Interference Signal in SoundingsgpsondewrpnC1.a0, sgpsondewrpnC1.a1
D951006.6Apparent Interference Signal in SoundingsgpsondewrpnC1.a0, sgpsondewrpnC1.a1
D960122.1Jump in pressure value upon launchsgpsondewrpnC1.a0, sgpsondewrpnC1.a1
D960122.2Jump in pressure value upon launchsgpsondewrpnC1.a0, sgpsondewrpnC1.a1
D960129.1Bad surface pressure soundingsgpsondewrpnC1.a0, sgpsondewrpnC1.a1
D960202.2bad pressure soundingsgpsondewrpnC1.a0, sgpsondewrpnC1.a1
D960223.1Incorrect surface pressure soundingsgpsondewrpnC1.a0, sgpsondewrpnC1.a1
D960223.2Incorrect surface pressure soundingsgpsondewrpnC1.a0, sgpsondewrpnC1.a1
D960229.2SGP/SONDE/C1 - incorrect factory RH calib-radiosondessgpsondewrpnC1.a0, sgpsondewrpnC1.a1
D960403.1Bad surface pressure soundingsgpsondewrpnC1.a0, sgpsondewrpnC1.a1
D960415.1Bad surface pressure soundingsgpsondewrpnC1.a0, sgpsondewrpnC1.a1
D960506.1Bad surface pressure soundingsgpsondewrpnC1.a0, sgpsondewrpnC1.a1
D960602.2bad surface pressure soundingsgpsondewrpnC1.a0, sgpsondewrpnC1.a1
D960611.3bad surface values soundingsgpsondewrpnC1.a0, sgpsondewrpnC1.a1
D960701.4Bad surface pressure soundingsgpsondewrpnC1.a0, sgpsondewrpnC1.a1
D960706.1Bad surface pressure soundingsgpsondewrpnC1.a0, sgpsondewrpnC1.a1
D970710.1Questionable pressure/altitude datasgpsondewrpnC1.a1


DQRID : D940804.1
Start DateStart TimeEnd DateEnd Time
07/13/1994113108/03/19941430
Subject:
Possible error in humidity ground check
DataStreams:sgpsondewrpnC1.a0, sgpsondewrpnC1.a1
Description:
DQR No:                               Platform:  sgpsondewrpnC1

Subject:   Possible error in humidity ground check

Date Submitted:  8/3/94
Submitted By:    Barry Lesht          _X_  Instrument Mentor
                                      ___  EST Member
                                      ___  Science Team Member
                                      ___  Other _____________________________
 
For questions or problems, please contact the ARM Experiment Center at
509-375-6898 or via email at dqr@arm.gov.

Platform/Measurement:
	What level data: (raw,a0,a1,b1,c1 etc): raw, a0, a1

    What location was the data collected at: CF
 
    Period of time in question
 	Begin Date   7/13/94   Time   11:31    (GMT)
 	End Date     8/ 3/94   Time   14:30    (GMT)

 Data should be labeled:
 _X_  questionable                      ___  All data fields affected
 ___  incorrect                         _X_  Only some data fields affected
 ___  wrong calibration
 ___  others 
 
 Discussion of Problem:

We suspect that the dessicant in the bbss ground check set (located 
only at the central facility) has become saturated and is no longer
providing a 0 %RH environment against which to check the sonde RH sensor.
This would result in a bias in the correction for humidity for 
those soundings that were done during the time the dessicant was bad.  
Examination of the data suggests that the potential errors are small, 
(on the order of a few percent RH), but sufficiently different from previous 
corrections to warrant temporary suspension of the ground check procedure.

A review of the data collected since the beginning of the year shows no
trend in humidity correction until July 13, 1994.  The last positive
humidity correction was recorded on July 12, 1994 and since then has been
noticably (though slightly) downward.

The humidity correction is applied linearly.  That is, U = U' + (Uo - Uo')
where U is the humidity with the ground check applied (this is the RH
value in our data stream), U' is the humidity measured at the sonde before
correction, Uo is the reference humidity (assumed to be 0%), and Uo' is
is the humidity measured by the sonde in the ground check set.  Users
can recover the RH measured at the sonde by subtracing the global attribute
"humidity-correction" from the RH values in the data set.  Based on our
experience with the ground check data, we expect the RH values measured
at the sonde to be accurate within +/-2% RH.  

 
Other observations/measurements impacted by this problem:  

Any measurement derived from the sonde RH measurement, for example
dew point temperature, water vapor mixing ratio).


Suggested Corrections of the Problem: (e.g. change calibration factor and
recompute, flag data with this comment, etc.)

Flag data warning user that RH may be biased high by an unknown amount,
probably not exceeding 2% RH.


Data Processing Notes                Date
Measurements:sgpsondewrpnC1.a0:
  • pressure at constant pressure surface(pres)
  • Relative humidity scaled, by total column amount from MWR(rh)
  • north latitude for all the input platforms.(lat)
  • surface wind speed(wspd)
  • Ascent Rate(asc)
  • altitude above sea levelaltunits(alt)
  • Dry-Bulb Temperature(tdry)
  • east longitude for all the input platforms.(lon)
  • Wind Status(wstat)
  • Wind Direction(deg)
  • Surface dew point temperature(dp)
  • Time offset of tweaks from base_time(time_offset)
  • Time offset from base_time(base_time)

sgpsondewrpnC1.a1:
  • east longitude for all the input platforms.(lon)
  • model meridional wind velocity(v_wind)
  • Ascent Rate(asc)
  • Time offset of tweaks from base_time(time_offset)
  • Wind Status(wstat)
  • Relative humidity scaled, by total column amount from MWR(rh)
  • altitude above sea levelaltunits(alt)
  • Wind Direction(deg)
  • pressure at constant pressure surface(pres)
  • Dry-Bulb Temperature(tdry)
  • model zonal wind velocity(u_wind)
  • Time offset from base_time(base_time)
  • Surface dew point temperature(dp)
  • surface wind speed(wspd)
  • north latitude for all the input platforms.(lat)


Back To Table of Contents

DQRID : D941104.1
Start DateStart TimeEnd DateEnd Time
10/30/1994232610/30/19942326
Subject:
Bad surface RH value in sounding
DataStreams:sgpsondewrpnC1.a0, sgpsondewrpnC1.a1
Description:
DQR No:                               Platform:  SGPSONDEC1

Subject:        Bad surface RH value in sounding 10/30/94 23:26

Date Submitted: 11/4/94
Submitted By:   Barry Lesht           _X_  Instrument Mentor
                                      ___  EST Member
                                      ___  Science Team Member
                                      ___  Other _____________________________
 
For questions or problems, please contact the ARM Experiment Center at
509-375-6898 or via email at dqr@arm.gov.

Platform/Measurement: All
	What level data: (raw,a0,a1,b1,c1 etc):

    What location was the data collected at: SGP/CF
 
    Period of time in question
 	Begin Date  10/30/94   Time   23:26    (GMT)
 	End Date    10/30/94   Time   23:26    (GMT)

 Data should be labeled:
 ___  questionable                      ___  All data fields affected
 _X_  incorrect                         _X_  Only some data fields affected
 ___  wrong calibration
 ___  others 
 
 Discussion of Problem:

It looks as though an incorrect value was entered by the operator for
surface relative humidity.  The value entered 16% is much lower than the
first value given by the radiosonde 80%.  The rest of the sounding is
consistent with humid, rainy conditions, suggesting a typographical
error (16 instead of 76?).

 
Other observations/measurements impacted by this problem:



Suggested Corrections of the Problem: (e.g. change calibration factor and
recompute, flag data with this comment, etc.)

Flag data.

Data Processing Notes                Date
Measurements:sgpsondewrpnC1.a0:
  • pressure at constant pressure surface(pres)
  • Relative humidity scaled, by total column amount from MWR(rh)
  • north latitude for all the input platforms.(lat)
  • surface wind speed(wspd)
  • Ascent Rate(asc)
  • altitude above sea levelaltunits(alt)
  • Dry-Bulb Temperature(tdry)
  • east longitude for all the input platforms.(lon)
  • Wind Status(wstat)
  • Wind Direction(deg)
  • Surface dew point temperature(dp)
  • Time offset of tweaks from base_time(time_offset)
  • Time offset from base_time(base_time)

sgpsondewrpnC1.a1:
  • east longitude for all the input platforms.(lon)
  • model meridional wind velocity(v_wind)
  • Ascent Rate(asc)
  • Time offset of tweaks from base_time(time_offset)
  • Wind Status(wstat)
  • Relative humidity scaled, by total column amount from MWR(rh)
  • altitude above sea levelaltunits(alt)
  • Wind Direction(deg)
  • pressure at constant pressure surface(pres)
  • Dry-Bulb Temperature(tdry)
  • model zonal wind velocity(u_wind)
  • Time offset from base_time(base_time)
  • Surface dew point temperature(dp)
  • surface wind speed(wspd)
  • north latitude for all the input platforms.(lat)


Back To Table of Contents

DQRID : D941108.2
Start DateStart TimeEnd DateEnd Time
11/06/1994173311/06/19941733
Subject:
Bad surface RH value in sounding
DataStreams:sgpsondewrpnC1.a0, sgpsondewrpnC1.a1
Description:
DQR No:                               Platform:  SGPSONDEC1

Subject:        Bad surface RH value in sounding 11/6/94 17:33

Date Submitted: 11/8/94
Submitted By:   Barry Lesht           _X_  Instrument Mentor
                                      ___  EST Member
                                      ___  Science Team Member
                                      ___  Other _____________________________
 
For questions or problems, please contact the ARM Experiment Center at
509-375-6898 or via email at dqr@arm.gov.

Platform/Measurement: All
    What level data: (raw,a0,a1,b1,c1 etc):

    What location was the data collected at: SGP/CF
 
    Period of time in question
     Begin Date  11/06/94   Time   17:33    (GMT)
     End Date    11/06/94   Time   17:33    (GMT)

 Data should be labeled:
 ___  questionable                      ___  All data fields affected
 _X_  incorrect                         _X_  Only some data fields affected
 ___  wrong calibration
 ___  others 
 
 Discussion of Problem:

An incorrect value was entered by the operator for surface relative humidity.  
The value as entered as 4% should be 45%.  This typographical error was
noted in the site operations log by the operator shortly after it occurred.
The remaining values in the sounding should be fine.

 
Other observations/measurements impacted by this problem:



Suggested Corrections of the Problem: (e.g. change calibration factor and
recompute, flag data with this comment, etc.)

Flag data.

Data Processing Notes                Date
Measurements:sgpsondewrpnC1.a0:
  • pressure at constant pressure surface(pres)
  • Relative humidity scaled, by total column amount from MWR(rh)
  • north latitude for all the input platforms.(lat)
  • surface wind speed(wspd)
  • Ascent Rate(asc)
  • altitude above sea levelaltunits(alt)
  • Dry-Bulb Temperature(tdry)
  • east longitude for all the input platforms.(lon)
  • Wind Status(wstat)
  • Wind Direction(deg)
  • Surface dew point temperature(dp)
  • Time offset of tweaks from base_time(time_offset)
  • Time offset from base_time(base_time)

sgpsondewrpnC1.a1:
  • east longitude for all the input platforms.(lon)
  • model meridional wind velocity(v_wind)
  • Ascent Rate(asc)
  • Time offset of tweaks from base_time(time_offset)
  • Wind Status(wstat)
  • Relative humidity scaled, by total column amount from MWR(rh)
  • altitude above sea levelaltunits(alt)
  • Wind Direction(deg)
  • pressure at constant pressure surface(pres)
  • Dry-Bulb Temperature(tdry)
  • model zonal wind velocity(u_wind)
  • Time offset from base_time(base_time)
  • Surface dew point temperature(dp)
  • surface wind speed(wspd)
  • north latitude for all the input platforms.(lat)


Back To Table of Contents

DQRID : D941108.4
Start DateStart TimeEnd DateEnd Time
01/21/1993164008/03/19941430
Subject:
CF Sonde Ground Check Corrections
DataStreams:sgpsondewrpnC1.a0, sgpsondewrpnC1.a1
Description:
DQR No:                               Platform:  SGPSONDEC1

Subject:        CF Sonde Ground Check Corrections

Date Submitted: 11/8/94
Submitted By:   Barry Lesht           _X_  Instrument Mentor
                                      ___  EST Member
                                      ___  Science Team Member
                                      ___  Other _____________________________
 
For questions or problems, please contact the ARM Experiment Center at
509-375-6898 or via email at dqr@arm.gov.

Platform/Measurement: sgpsondec1
	What level data: (raw,a0,a1,b1,c1 etc):  all

    What location was the data collected at: SGP/CF
 
    Period of time in question
 	Begin Date  01/21/93   Time   16:40    (GMT)
 	End Date    08/03/94   Time   14:30    (GMT)

 Data should be labeled:
 _?_  questionable                      ___  All data fields affected
 ___  incorrect                         _X_  Only some data fields affected
 ___  wrong calibration
 ___  others 
 
 Discussion of Problem:

Between 1/21/93 and 8/3/94 all radiosondes launched from the central
facility were ground checked before launch.  The ground check procedure
consists of placing the sonde sensor arm into a sealed, dessicated chamber
containing a certified calibrated mercury thermometer, allowing the sonde
to equilibrate, and comparing the sonde output readings for RH and
temperature to the thermometer reading and an assumed 0% RH.  All data after
launch were "corrected" to account for any differences between the sonde
output and the reference conditions in the ground check set.

Analysis of the population of ground check values shows that the average
RH correction was 0% RH and average temperature correction was -0.4 degC.
Because there is some question as to whether applying the ground check
correction increases or decreases the accuracy of the output data, some
investigators may wish to remove the effect of the ground check before
using the data in their analyses.  Ground checks were suspended on 8/3/94.

The algorithms for removing the ground check are:

RH (without ground check) = RH (as reported) - humidity_correction

Temp (without ground chk) = [Temp (as reported) - FACTOR1]/FACTOR2 where

FACTOR1 = [(90*temperature_correction)/(tref+90)
FACOTR2 = [1+(temperature_correction)/(tref+90)

The variables "humidity_correction" and "temperature_correction" are
metadata contained in the netCDF data files from 5/20/93 to 8/3/94.
Between 1/21/93 and 5/20/93 these variables were misnamed and are not
easily accessible via FORTRAN (see PIF 940917.1).

The variable tref is the actual temperature reported by the radiosonde
while in the ground check set.  This variable is not included in the
netCDF file and can be estimated by using a value of 15 degC.  The
correction function is relatively insensitive to variations in this
value.  (see PIF 940917.2)

FORTRAN routines for reading the metadata and for applying the algorithms
to produce "uncorrected" data are available from the instrument mentor.
 
Other observations/measurements impacted by this problem:



Suggested Corrections of the Problem: (e.g. change calibration factor and
recompute, flag data with this comment, etc.)

Send (another) notice to users of the data.  

Data Processing Notes                Date
Measurements:sgpsondewrpnC1.a0:
  • pressure at constant pressure surface(pres)
  • Relative humidity scaled, by total column amount from MWR(rh)
  • north latitude for all the input platforms.(lat)
  • surface wind speed(wspd)
  • Ascent Rate(asc)
  • altitude above sea levelaltunits(alt)
  • Dry-Bulb Temperature(tdry)
  • east longitude for all the input platforms.(lon)
  • Wind Status(wstat)
  • Wind Direction(deg)
  • Surface dew point temperature(dp)
  • Time offset of tweaks from base_time(time_offset)
  • Time offset from base_time(base_time)

sgpsondewrpnC1.a1:
  • east longitude for all the input platforms.(lon)
  • model meridional wind velocity(v_wind)
  • Ascent Rate(asc)
  • Time offset of tweaks from base_time(time_offset)
  • Wind Status(wstat)
  • Relative humidity scaled, by total column amount from MWR(rh)
  • altitude above sea levelaltunits(alt)
  • Wind Direction(deg)
  • pressure at constant pressure surface(pres)
  • Dry-Bulb Temperature(tdry)
  • model zonal wind velocity(u_wind)
  • Time offset from base_time(base_time)
  • Surface dew point temperature(dp)
  • surface wind speed(wspd)
  • north latitude for all the input platforms.(lat)


Back To Table of Contents

DQRID : D941213.1
Start DateStart TimeEnd DateEnd Time
12/09/1994113312/09/19941133
Subject:
Questionable initial values sounding 941209:1133
DataStreams:sgpsondewrpnC1.a0, sgpsondewrpnC1.a1
Description:
DQR No:                               Platform: sgpsondec1

Subject:   Questionable initial values sounding 941209:1133

Date Submitted: 12/12/94
Submitted By:   Barry Lesht           _x_  Instrument Mentor
                                      ___  EST Member
                                      ___  Science Team Member
                                      ___  Other _____________________________
 
For questions or problems, please contact the ARM Experiment Center at
509-375-6898 or via email at dqr@arm.gov.

Platform/Measurement:  All
	What level data: (raw,a0,a1,b1,c1 etc):

    What location was the data collected at: SGP/CF
 
    Period of time in question
 	Begin Date  12/09/94   Time   11:33:00 (GMT)
 	End Date    12/09/94   Time   11:33:02 (GMT)

 Data should be labeled:
 _x_  questionable                      ___  All data fields affected
 ___  incorrect                         _x_  Only some data fields affected
 ___  wrong calibration
 ___  others 
 
 Discussion of Problem:

It appears that incorrect values were entered for surface temperature and
relative humidity in the subject sounding.  The values entered were
temp = 25.1 degC, rh = 18 %.  The next values in the sounding are
temp =- 2.4 degC, rh = 70 %.  Because these do not appear to be simple
typographical errors, the values should be noted as questionable rather
than incorrect until the paper log can be consulted by site ops.

Initial values for subsequent soundings seem fine.

 
Other observations/measurements impacted by this problem:



Suggested Corrections of the Problem: (e.g. change calibration factor and
recompute, flag data with this comment, etc.)

Check paper log and flag data.  Note for possible correction later.


Data Processing Notes                Date
Measurements:sgpsondewrpnC1.a0:
  • pressure at constant pressure surface(pres)
  • Relative humidity scaled, by total column amount from MWR(rh)
  • north latitude for all the input platforms.(lat)
  • surface wind speed(wspd)
  • Ascent Rate(asc)
  • altitude above sea levelaltunits(alt)
  • Dry-Bulb Temperature(tdry)
  • east longitude for all the input platforms.(lon)
  • Wind Status(wstat)
  • Wind Direction(deg)
  • Surface dew point temperature(dp)
  • Time offset of tweaks from base_time(time_offset)
  • Time offset from base_time(base_time)

sgpsondewrpnC1.a1:
  • east longitude for all the input platforms.(lon)
  • model meridional wind velocity(v_wind)
  • Ascent Rate(asc)
  • Time offset of tweaks from base_time(time_offset)
  • Wind Status(wstat)
  • Relative humidity scaled, by total column amount from MWR(rh)
  • altitude above sea levelaltunits(alt)
  • Wind Direction(deg)
  • pressure at constant pressure surface(pres)
  • Dry-Bulb Temperature(tdry)
  • model zonal wind velocity(u_wind)
  • Time offset from base_time(base_time)
  • Surface dew point temperature(dp)
  • surface wind speed(wspd)
  • north latitude for all the input platforms.(lat)


Back To Table of Contents

DQRID : D950109.1
Start DateStart TimeEnd DateEnd Time
01/02/1995113201/02/19951132
Subject:
Questionable surface value 1/2/95 11:32
DataStreams:sgpsondewrpnC1.a0, sgpsondewrpnC1.a1
Description:
DQR No:                               Platform: sgpsondec1wrpn

Subject:   Questionable surface value 1/2/95 11:32

Date Submitted: 1/9/95
Submitted By:                         _X_  Instrument Mentor
                                      ___  EST Member
                                      ___  Science Team Member
                                      ___  Other _____________________________
 
For questions or problems, please contact the ARM Experiment Center at
509-375-6898 or via email at dqr@arm.gov.

Platform/Measurement:  sgpsondec1
	What level data: (raw,a0,a1,b1,c1 etc):  all

    What location was the data collected at: cf
 
    Period of time in question
 	Begin Date   1/02/95   Time   11:32:00    (GMT)
 	End Date     1/02/95   Time   11:32:02    (GMT)

 Data should be labeled:
 _x_  questionable                      ___  All data fields affected
 ___  incorrect                         ___  Only some data fields affected
 ___  wrong calibration
 ___  others 
 
 Discussion of Problem:

It appears that incorrect surface values of temperature and relative
humidity were entered for the subject sounding.



 
Other observations/measurements impacted by this problem:

None



Suggested Corrections of the Problem: (e.g. change calibration factor and
recompute, flag data with this comment, etc.)

Flag data.

Data Processing Notes                Date
Measurements:sgpsondewrpnC1.a0:
  • pressure at constant pressure surface(pres)
  • Relative humidity scaled, by total column amount from MWR(rh)
  • north latitude for all the input platforms.(lat)
  • surface wind speed(wspd)
  • Ascent Rate(asc)
  • altitude above sea levelaltunits(alt)
  • Dry-Bulb Temperature(tdry)
  • east longitude for all the input platforms.(lon)
  • Wind Status(wstat)
  • Wind Direction(deg)
  • Surface dew point temperature(dp)
  • Time offset of tweaks from base_time(time_offset)
  • Time offset from base_time(base_time)

sgpsondewrpnC1.a1:
  • east longitude for all the input platforms.(lon)
  • model meridional wind velocity(v_wind)
  • Ascent Rate(asc)
  • Time offset of tweaks from base_time(time_offset)
  • Wind Status(wstat)
  • Relative humidity scaled, by total column amount from MWR(rh)
  • altitude above sea levelaltunits(alt)
  • Wind Direction(deg)
  • pressure at constant pressure surface(pres)
  • Dry-Bulb Temperature(tdry)
  • model zonal wind velocity(u_wind)
  • Time offset from base_time(base_time)
  • Surface dew point temperature(dp)
  • surface wind speed(wspd)
  • north latitude for all the input platforms.(lat)


Back To Table of Contents

DQRID : D950109.2
Start DateStart TimeEnd DateEnd Time
01/03/1995112901/03/19951129
Subject:
Questionable surface value 1/3/95 11:29
DataStreams:sgpsondewrpnC1.a0, sgpsondewrpnC1.a1
Description:
DQR No:                               Platform: sgpsondec1wrpn

Subject:   Questionable surface value 1/3/95 11:29

Date Submitted: 1/9/95
Submitted By:                         _X_  Instrument Mentor
                                      ___  EST Member
                                      ___  Science Team Member
                                      ___  Other _____________________________
 
For questions or problems, please contact the ARM Experiment Center at
509-375-6898 or via email at dqr@arm.gov.

Platform/Measurement:  sgpsondec1
	What level data: (raw,a0,a1,b1,c1 etc):  all

    What location was the data collected at: cf
 
    Period of time in question
 	Begin Date   1/03/95   Time   11:29:00    (GMT)
 	End Date     1/03/95   Time   11:29:02    (GMT)

 Data should be labeled:
 _x_  questionable                      ___  All data fields affected
 ___  incorrect                         ___  Only some data fields affected
 ___  wrong calibration
 ___  others 
 
 Discussion of Problem:

It appears that incorrect surface values of temperature and relative
humidity were entered for the subject sounding.



 
Other observations/measurements impacted by this problem:

None



Suggested Corrections of the Problem: (e.g. change calibration factor and
recompute, flag data with this comment, etc.)

Flag data.

Data Processing Notes                Date
Measurements:sgpsondewrpnC1.a0:
  • pressure at constant pressure surface(pres)
  • Relative humidity scaled, by total column amount from MWR(rh)
  • north latitude for all the input platforms.(lat)
  • surface wind speed(wspd)
  • Ascent Rate(asc)
  • altitude above sea levelaltunits(alt)
  • Dry-Bulb Temperature(tdry)
  • east longitude for all the input platforms.(lon)
  • Wind Status(wstat)
  • Wind Direction(deg)
  • Surface dew point temperature(dp)
  • Time offset of tweaks from base_time(time_offset)
  • Time offset from base_time(base_time)

sgpsondewrpnC1.a1:
  • east longitude for all the input platforms.(lon)
  • model meridional wind velocity(v_wind)
  • Ascent Rate(asc)
  • Time offset of tweaks from base_time(time_offset)
  • Wind Status(wstat)
  • Relative humidity scaled, by total column amount from MWR(rh)
  • altitude above sea levelaltunits(alt)
  • Wind Direction(deg)
  • pressure at constant pressure surface(pres)
  • Dry-Bulb Temperature(tdry)
  • model zonal wind velocity(u_wind)
  • Time offset from base_time(base_time)
  • Surface dew point temperature(dp)
  • surface wind speed(wspd)
  • north latitude for all the input platforms.(lat)


Back To Table of Contents

DQRID : D950304.1
Start DateStart TimeEnd DateEnd Time
02/22/1995053002/22/19950730
Subject:
Reprocess: Sounding 950222:0530 done in research mode
DataStreams:sgpsondewrpnC1.a0, sgpsondewrpnC1.a1
Description:
DQR No:                               Platform:

Subject: Sounding 950222:0530 Done in Research Mode

Date Submitted:  3/4/95
Submitted By:                         _X_  Instrument Mentor
                                      ___  EST Member
                                      ___  Science Team Member
                                      ___  Other _____________________________
 
For questions or problems, please contact the ARM Experiment Center at
509-375-6898 or via email at dqr@arm.gov.

Platform/Measurement:  SGPSONDEC1
	What level data: (raw,a0,a1,b1,c1 etc):  ALL

    What location was the data collected at:   SGP/CF
 
    Period of time in question
 	Begin Date   2/22/95   Time   05:30    (GMT)
 	End Date     2/22/95   Time   07:30    (GMT)

 Data should be labeled:
 ___  questionable                      _X_  All data fields affected
 ___  incorrect                         ___  Only some data fields affected
 ___  wrong calibration
 _X_  others 
 
 Discussion of Problem:   This sounding was done in RESEARCH mode for
                          both thermodynamic as well as wind data.  The
                          normal mode is to for RESEARCH winds only.  As
                          a result, both the ascending and descending
                          flights of the sonde are included in the data
                          file and none of the data are smoothed or
                          filtered.  

 
Other observations/measurements impacted by this problem:  I think that
                          some of the radiation codes that use the sonde
                          data as input don't handle the descending samples
                          well.  I'm not sure which ones may be affected.


Suggested Corrections of the Problem: (e.g. change calibration factor and
recompute, flag data with this comment, etc.)  Users should be notified and,
if (and only if) requested, the sounding could be reprocessed either using
the software developed at the EC or the digi-CORA.


Data Processing Notes                Date
Measurements:sgpsondewrpnC1.a0:
  • pressure at constant pressure surface(pres)
  • Relative humidity scaled, by total column amount from MWR(rh)
  • north latitude for all the input platforms.(lat)
  • surface wind speed(wspd)
  • Ascent Rate(asc)
  • altitude above sea levelaltunits(alt)
  • Dry-Bulb Temperature(tdry)
  • east longitude for all the input platforms.(lon)
  • Wind Status(wstat)
  • Wind Direction(deg)
  • Surface dew point temperature(dp)
  • Time offset of tweaks from base_time(time_offset)
  • Time offset from base_time(base_time)

sgpsondewrpnC1.a1:
  • east longitude for all the input platforms.(lon)
  • model meridional wind velocity(v_wind)
  • Ascent Rate(asc)
  • Time offset of tweaks from base_time(time_offset)
  • Wind Status(wstat)
  • Relative humidity scaled, by total column amount from MWR(rh)
  • altitude above sea levelaltunits(alt)
  • Wind Direction(deg)
  • pressure at constant pressure surface(pres)
  • Dry-Bulb Temperature(tdry)
  • model zonal wind velocity(u_wind)
  • Time offset from base_time(base_time)
  • Surface dew point temperature(dp)
  • surface wind speed(wspd)
  • north latitude for all the input platforms.(lat)


Back To Table of Contents

DQRID : D950310.1
Start DateStart TimeEnd DateEnd Time
03/09/1995053003/09/19950530
Subject:
Bad surface values in sounding 3/9/95:0530
DataStreams:sgpsondewrpnC1.a0, sgpsondewrpnC1.a1
Description:
DQR No:                               Platform: sgpsondeC1

Subject: Bad surface values in sounding 3/9/95:0530

Date Submitted:  3/10/95
Submitted By:                         _x_  Instrument Mentor
                                      ___  EST Member
                                      ___  Science Team Member
                                      ___  Other _____________________________
 
For questions or problems, please contact the ARM Experiment Center at
509-375-6898 or via email at dqr@arm.gov.

Platform/Measurement:
	What level data: (raw,a0,a1,b1,c1 etc):  all

    What location was the data collected at: sgp/cf
 
    Period of time in question
 	Begin Date   3/09/95   Time   05:30    (GMT)
 	End Date     3/09/95   Time   05:30    (GMT)

 Data should be labeled:
 ___  questionable                      ___  All data fields affected
 _x_  incorrect                         _x_  Only some data fields affected
 ___  wrong calibration
 ___  others 
 
 Discussion of Problem:   It appears that the operator entered incorrect
values for the surface temperature and humidity for this sounding.  The
entered values are 24.8 degC (temp) and 19 %RH (humidity) which are most
likely the values obtained from the met instruments inside the trailer
rather from the sonde on the launch platfrom.  The next sample values of
-3.1 degC (temp) and 81 %RH (humidity) appear to be valid.



 
Other observations/measurements impacted by this problem:



Suggested Corrections of the Problem: (e.g. change calibration factor and
recompute, flag data with this comment, etc.)

Flag data.

Data Processing Notes                Date
Measurements:sgpsondewrpnC1.a0:
  • pressure at constant pressure surface(pres)
  • Relative humidity scaled, by total column amount from MWR(rh)
  • north latitude for all the input platforms.(lat)
  • surface wind speed(wspd)
  • Ascent Rate(asc)
  • altitude above sea levelaltunits(alt)
  • Dry-Bulb Temperature(tdry)
  • east longitude for all the input platforms.(lon)
  • Wind Status(wstat)
  • Wind Direction(deg)
  • Surface dew point temperature(dp)
  • Time offset of tweaks from base_time(time_offset)
  • Time offset from base_time(base_time)

sgpsondewrpnC1.a1:
  • east longitude for all the input platforms.(lon)
  • model meridional wind velocity(v_wind)
  • Ascent Rate(asc)
  • Time offset of tweaks from base_time(time_offset)
  • Wind Status(wstat)
  • Relative humidity scaled, by total column amount from MWR(rh)
  • altitude above sea levelaltunits(alt)
  • Wind Direction(deg)
  • pressure at constant pressure surface(pres)
  • Dry-Bulb Temperature(tdry)
  • model zonal wind velocity(u_wind)
  • Time offset from base_time(base_time)
  • Surface dew point temperature(dp)
  • surface wind speed(wspd)
  • north latitude for all the input platforms.(lat)


Back To Table of Contents

DQRID : D950316.1
Start DateStart TimeEnd DateEnd Time
03/15/1995142903/15/19951629
Subject:
Reprocess: Sounding 950315:1429 done in research mode
DataStreams:sgpsondewrpnC1.a0, sgpsondewrpnC1.a1
Description:
P950316.1                                                  Barry Lesht
SGP/SONDE.C1.950315.950315 - Sounding 950315:1429 Done in Research Mode

DQR No:                               Platform:

Subject: Sounding 950315:1429 Done in Research Mode

Date Submitted:  3/4/95
Submitted By:                         _X_  Instrument Mentor
                                      ___  EST Member
                                      ___  Science Team Member
                                      ___  Other _____________________________

For questions or problems, please contact the ARM Experiment Center at
509-375-6898 or via email at dqr@arm.gov.

Platform/Measurement:  SGPSONDEC1
 What level data: (raw,a0,a1,b1,c1 etc):  ALL

    What location was the data collected at:   SGP/CF

    Period of time in question
  Begin Date   3/15/95   Time   14:29    (GMT)
  End Date     3/15/95   Time   16:29    (GMT)

 Data should be labeled:
 ___  questionable                      _X_  All data fields affected
 ___  incorrect                         ___  Only some data fields affected
 ___  wrong calibration
 _X_  others

 Discussion of Problem:   This sounding was done in RESEARCH mode for
                          both thermodynamic as well as wind data.  The
                          normal mode is to for RESEARCH winds only.  As
                          a result, both the ascending and descending
                          flights of the sonde are included in the data
                          file and none of the data are smoothed or
                          filtered.


Other observations/measurements impacted by this problem:  I think that
                          some of the radiation codes that use the sonde
                          data as input don't handle the descending samples
                          well.  I'm not sure which ones may be affected.


Suggested Corrections of the Problem: (e.g. change calibration factor and
recompute, flag data with this comment, etc.)  Users should be notified and,
if (and only if) requested, the sounding could be reprocessed either using
the software developed at the EC or the digi-CORA.


Data Processing Notes                Date
Measurements:sgpsondewrpnC1.a0:
  • pressure at constant pressure surface(pres)
  • Relative humidity scaled, by total column amount from MWR(rh)
  • north latitude for all the input platforms.(lat)
  • surface wind speed(wspd)
  • Ascent Rate(asc)
  • altitude above sea levelaltunits(alt)
  • Dry-Bulb Temperature(tdry)
  • east longitude for all the input platforms.(lon)
  • Wind Status(wstat)
  • Wind Direction(deg)
  • Surface dew point temperature(dp)
  • Time offset of tweaks from base_time(time_offset)
  • Time offset from base_time(base_time)

sgpsondewrpnC1.a1:
  • east longitude for all the input platforms.(lon)
  • model meridional wind velocity(v_wind)
  • Ascent Rate(asc)
  • Time offset of tweaks from base_time(time_offset)
  • Wind Status(wstat)
  • Relative humidity scaled, by total column amount from MWR(rh)
  • altitude above sea levelaltunits(alt)
  • Wind Direction(deg)
  • pressure at constant pressure surface(pres)
  • Dry-Bulb Temperature(tdry)
  • model zonal wind velocity(u_wind)
  • Time offset from base_time(base_time)
  • Surface dew point temperature(dp)
  • surface wind speed(wspd)
  • north latitude for all the input platforms.(lat)


Back To Table of Contents

DQRID : D950417.1
Start DateStart TimeEnd DateEnd Time
04/13/1995113004/13/19951330
Subject:
Reprocess: Sounding 950413:1130 done in research mode
DataStreams:sgpsondewrpnC1.a0, sgpsondewrpnC1.a1
Description:
DQR No:                               Platform:

Subject: Sounding 950413:1130 Done in Research Mode

Date Submitted:  4/17/95
Submitted By:                         _X_  Instrument Mentor
                                      ___  EST Member
                                      ___  Science Team Member
                                      ___  Other _____________________________
 
For questions or problems, please contact the ARM Experiment Center at
509-375-6898 or via email at dqr@arm.gov.

Platform/Measurement:  SGPSONDEC1
	What level data: (raw,a0,a1,b1,c1 etc):  ALL

    What location was the data collected at:   SGP/CF
 
    Period of time in question
 	Begin Date   4/13/95   Time   11:30    (GMT)
 	End Date     4/13/95   Time   13:30    (GMT)

 Data should be labeled:
 ___  questionable                      _X_  All data fields affected
 ___  incorrect                         ___  Only some data fields affected
 ___  wrong calibration
 _X_  others 
 
 Discussion of Problem:   This sounding was done in RESEARCH mode for
                          both thermodynamic as well as wind data.  The
                          normal mode is to for RESEARCH winds only.  As
                          a result, both the ascending and descending
                          flights of the sonde are included in the data
                          file and none of the data are smoothed or
                          filtered.  

 
Other observations/measurements impacted by this problem:  I think that
                          some of the radiation codes that use the sonde
                          data as input don't handle the descending samples
                          well.  I'm not sure which ones may be affected.


Suggested Corrections of the Problem: (e.g. change calibration factor and
recompute, flag data with this comment, etc.)  Users should be notified and,
if (and only if) requested, the sounding could be reprocessed either using
the software developed at the EC or the digi-CORA.


Data Processing Notes                Date
Measurements:sgpsondewrpnC1.a0:
  • pressure at constant pressure surface(pres)
  • Relative humidity scaled, by total column amount from MWR(rh)
  • north latitude for all the input platforms.(lat)
  • surface wind speed(wspd)
  • Ascent Rate(asc)
  • altitude above sea levelaltunits(alt)
  • Dry-Bulb Temperature(tdry)
  • east longitude for all the input platforms.(lon)
  • Wind Status(wstat)
  • Wind Direction(deg)
  • Surface dew point temperature(dp)
  • Time offset of tweaks from base_time(time_offset)
  • Time offset from base_time(base_time)

sgpsondewrpnC1.a1:
  • east longitude for all the input platforms.(lon)
  • model meridional wind velocity(v_wind)
  • Ascent Rate(asc)
  • Time offset of tweaks from base_time(time_offset)
  • Wind Status(wstat)
  • Relative humidity scaled, by total column amount from MWR(rh)
  • altitude above sea levelaltunits(alt)
  • Wind Direction(deg)
  • pressure at constant pressure surface(pres)
  • Dry-Bulb Temperature(tdry)
  • model zonal wind velocity(u_wind)
  • Time offset from base_time(base_time)
  • Surface dew point temperature(dp)
  • surface wind speed(wspd)
  • north latitude for all the input platforms.(lat)


Back To Table of Contents

DQRID : D950419.1
Start DateStart TimeEnd DateEnd Time
04/17/1995142904/17/19951551
Subject:
Bad surface values in sounding 4/17/95 14:29
DataStreams:sgpsondewrpnC1.a0, sgpsondewrpnC1.a1
Description:
DQR No:                               Platform:  SGPSONDEC1

Subject:        Bad surface values in sounding 4/17/95 14:29

Date Submitted: 4/19/95
Submitted By:   Barry Lesht           _X_  Instrument Mentor
                                      ___  EST Member
                                      ___  Science Team Member
                                      ___  Other _____________________________
 
For questions or problems, please contact the ARM Experiment Center at
509-375-6898 or via email at dqr@arm.gov.

Platform/Measurement: All
	What level data: (raw,a0,a1,b1,c1 etc):

    What location was the data collected at: SGP/CF
 
    Period of time in question
 	Begin Date  4/17/95   Time   14:29    (GMT)
 	End Date    4/17/95   Time   15:51    (GMT)

 Data should be labeled:
 ___  questionable                      ___  All data fields affected
 _X_  incorrect                         _X_  Only some data fields affected
 ___  wrong calibration
 ___  others 
 
 Discussion of Problem:

The operator entered incorrect surface values for both RH and pressure.
Because of the way altitude is calculated, the incorrect pressure value
has the effect of making all subsequent altitude values incorrect.  The
RH error only affects the first sample.  

 
Other observations/measurements impacted by this problem:



Suggested Corrections of the Problem: (e.g. change calibration factor and
recompute, flag data with this comment, etc.)

Flag data.

Data Processing Notes                Date
Measurements:sgpsondewrpnC1.a0:
  • pressure at constant pressure surface(pres)
  • Relative humidity scaled, by total column amount from MWR(rh)
  • north latitude for all the input platforms.(lat)
  • surface wind speed(wspd)
  • Ascent Rate(asc)
  • altitude above sea levelaltunits(alt)
  • Dry-Bulb Temperature(tdry)
  • east longitude for all the input platforms.(lon)
  • Wind Status(wstat)
  • Wind Direction(deg)
  • Surface dew point temperature(dp)
  • Time offset of tweaks from base_time(time_offset)
  • Time offset from base_time(base_time)

sgpsondewrpnC1.a1:
  • east longitude for all the input platforms.(lon)
  • model meridional wind velocity(v_wind)
  • Ascent Rate(asc)
  • Time offset of tweaks from base_time(time_offset)
  • Wind Status(wstat)
  • Relative humidity scaled, by total column amount from MWR(rh)
  • altitude above sea levelaltunits(alt)
  • Wind Direction(deg)
  • pressure at constant pressure surface(pres)
  • Dry-Bulb Temperature(tdry)
  • model zonal wind velocity(u_wind)
  • Time offset from base_time(base_time)
  • Surface dew point temperature(dp)
  • surface wind speed(wspd)
  • north latitude for all the input platforms.(lat)


Back To Table of Contents

DQRID : D950816.5
Start DateStart TimeEnd DateEnd Time
08/11/1995175508/11/19951755
Subject:
bad surface tdry value in sounding 17:55
DataStreams:sgpsondewrpnC1.a0, sgpsondewrpnC1.a1
Description:
DQR No:                               Platform:  SGPSONDEC1

Subject:        Bad surface tdry value in sounding 8/11/95 17:55

Date Submitted: 8/16/95
Submitted By:   Barry Lesht           _X_  Instrument Mentor
                                      ___  EST Member
                                      ___  Science Team Member
                                      ___  Other _____________________________
 
For questions or problems, please contact the ARM Experiment Center at
509-375-6898 or via email at dqr@arm.gov.

Platform/Measurement: All
    What level data: (raw,a0,a1,b1,c1 etc):

    What location was the data collected at: SGP/CF
 
    Period of time in question
        Begin Date  8/11/95    Time   17:55    (GMT)
        End Date    8/11/95    Time   17:55    (GMT)

 Data should be labeled:
 ___  questionable                      ___  All data fields affected
 _X_  incorrect                         _X_  Only some data fields affected
 ___  wrong calibration
 ___  others 
 
 Discussion of Problem:

An incorrect value was entered by the operator for surface temperature.
The value entered as 28.8 should be 31.8.  This error was noted in the 
site operations log by the operator shortly after it occurred.
The remaining values in the sounding should be fine.

 
Other observations/measurements impacted by this problem:



Suggested Corrections of the Problem: (e.g. change calibration factor and
recompute, flag data with this comment, etc.)

Flag data.

Data Processing Notes                Date
Measurements:sgpsondewrpnC1.a0:
  • pressure at constant pressure surface(pres)
  • Relative humidity scaled, by total column amount from MWR(rh)
  • north latitude for all the input platforms.(lat)
  • surface wind speed(wspd)
  • Ascent Rate(asc)
  • altitude above sea levelaltunits(alt)
  • Dry-Bulb Temperature(tdry)
  • east longitude for all the input platforms.(lon)
  • Wind Status(wstat)
  • Wind Direction(deg)
  • Surface dew point temperature(dp)
  • Time offset of tweaks from base_time(time_offset)
  • Time offset from base_time(base_time)

sgpsondewrpnC1.a1:
  • east longitude for all the input platforms.(lon)
  • model meridional wind velocity(v_wind)
  • Ascent Rate(asc)
  • Time offset of tweaks from base_time(time_offset)
  • Wind Status(wstat)
  • Relative humidity scaled, by total column amount from MWR(rh)
  • altitude above sea levelaltunits(alt)
  • Wind Direction(deg)
  • pressure at constant pressure surface(pres)
  • Dry-Bulb Temperature(tdry)
  • model zonal wind velocity(u_wind)
  • Time offset from base_time(base_time)
  • Surface dew point temperature(dp)
  • surface wind speed(wspd)
  • north latitude for all the input platforms.(lat)


Back To Table of Contents

DQRID : D951006.1
Start DateStart TimeEnd DateEnd Time
10/03/1995000010/03/19950100
Subject:
Apparent Interference Signal in Sounding
DataStreams:sgpsondewrpnC1.a0, sgpsondewrpnC1.a1
Description:
DQR No:                               Platform: sondeC1

Subject: Apparent Interference Signal in Sounding CF:951002:2330

Date Submitted:   October 6, 1995
Submitted By:                         _X_  Instrument Mentor
                                      ___  EST Member
                                      ___  Science Team Member
                                      ___  Other _____________________________

For questions or problems, please contact the ARM Experiment Center at
509-375-6898 or via email at dqr@arm.gov.

Platform/Measurement:
    What level data: (raw,a0,a1,b1,c1 etc):  All

    What location was the data collected at:     CF

    Period of time in question
        Begin Date   10/03/95   Time   XX:XX:XX (GMT)
        End Date     10/03/95   Time   00:54:12 (GMT)

 Data should be labeled:
 ___  questionable                      _X_  All data fields affected
 _X_  incorrect                         ___  Only some data fields affected
 ___  wrong calibration
 ___  others

 Discussion of Problem:  It appears as if the ground station started to
 receive data from a foreign sonde (i.e., not the sonde originally being
 tracked) at an altitude of about 14.5 km.  At this point the RH signal
 drops out, and both the pressure and temperature signals are noisy and
 look unnatural.


Other observations/measurements impacted by this problem:


Suggested Corrections of the Problem: (e.g. change calibration factor and
recompute, flag data with this comment, etc.)

    Flag


Data Processing Notes                Date
Measurements:sgpsondewrpnC1.a0:
  • pressure at constant pressure surface(pres)
  • Relative humidity scaled, by total column amount from MWR(rh)
  • north latitude for all the input platforms.(lat)
  • surface wind speed(wspd)
  • Ascent Rate(asc)
  • altitude above sea levelaltunits(alt)
  • Dry-Bulb Temperature(tdry)
  • east longitude for all the input platforms.(lon)
  • Wind Status(wstat)
  • Wind Direction(deg)
  • Surface dew point temperature(dp)
  • Time offset of tweaks from base_time(time_offset)
  • Time offset from base_time(base_time)

sgpsondewrpnC1.a1:
  • east longitude for all the input platforms.(lon)
  • model meridional wind velocity(v_wind)
  • Ascent Rate(asc)
  • Time offset of tweaks from base_time(time_offset)
  • Wind Status(wstat)
  • Relative humidity scaled, by total column amount from MWR(rh)
  • altitude above sea levelaltunits(alt)
  • Wind Direction(deg)
  • pressure at constant pressure surface(pres)
  • Dry-Bulb Temperature(tdry)
  • model zonal wind velocity(u_wind)
  • Time offset from base_time(base_time)
  • Surface dew point temperature(dp)
  • surface wind speed(wspd)
  • north latitude for all the input platforms.(lat)


Back To Table of Contents

DQRID : D951006.2
Start DateStart TimeEnd DateEnd Time
10/03/1995000010/03/19950940
Subject:
Apparent Interference Signal in Sounding
DataStreams:sgpsondewrpnC1.a0, sgpsondewrpnC1.a1
Description:
DQR No:                               Platform: sondeC1

Subject: Apparent Interference Signal in Sounding CF:951003:0830

Date Submitted:   October 6, 1995
Submitted By:                         _X_  Instrument Mentor
                                      ___  EST Member
                                      ___  Science Team Member
                                      ___  Other _____________________________

For questions or problems, please contact the ARM Experiment Center at
509-375-6898 or via email at dqr@arm.gov.

Platform/Measurement:
 What level data: (raw,a0,a1,b1,c1 etc):  All

    What location was the data collected at:     CF

    Period of time in question
  Begin Date   10/03/95   Time   XX:XX:XX (GMT)
  End Date     10/03/95   Time   09:40:20 (GMT)

 Data should be labeled:
 ___  questionable                      _X_  All data fields affected
 _X_  incorrect                         ___  Only some data fields affected
 ___  wrong calibration
 ___  others

 Discussion of Problem:  It appears as if the ground station started to
 receive data from a foreign sonde (i.e., not the sonde originally being
 tracked) at an altitude of about 14.0 km.  At this point the RH signal
 drops out, and both the pressure and temperature signals are noisy and
 look unnatural.


Other observations/measurements impacted by this problem:


Suggested Corrections of the Problem: (e.g. change calibration factor and
recompute, flag data with this comment, etc.)

    Flag


Data Processing Notes                Date
Measurements:sgpsondewrpnC1.a0:
  • pressure at constant pressure surface(pres)
  • Relative humidity scaled, by total column amount from MWR(rh)
  • north latitude for all the input platforms.(lat)
  • surface wind speed(wspd)
  • Ascent Rate(asc)
  • altitude above sea levelaltunits(alt)
  • Dry-Bulb Temperature(tdry)
  • east longitude for all the input platforms.(lon)
  • Wind Status(wstat)
  • Wind Direction(deg)
  • Surface dew point temperature(dp)
  • Time offset of tweaks from base_time(time_offset)
  • Time offset from base_time(base_time)

sgpsondewrpnC1.a1:
  • east longitude for all the input platforms.(lon)
  • model meridional wind velocity(v_wind)
  • Ascent Rate(asc)
  • Time offset of tweaks from base_time(time_offset)
  • Wind Status(wstat)
  • Relative humidity scaled, by total column amount from MWR(rh)
  • altitude above sea levelaltunits(alt)
  • Wind Direction(deg)
  • pressure at constant pressure surface(pres)
  • Dry-Bulb Temperature(tdry)
  • model zonal wind velocity(u_wind)
  • Time offset from base_time(base_time)
  • Surface dew point temperature(dp)
  • surface wind speed(wspd)
  • north latitude for all the input platforms.(lat)


Back To Table of Contents

DQRID : D951006.3
Start DateStart TimeEnd DateEnd Time
10/03/1995000010/03/19951525
Subject:
Apparent Interference Signal in Sounding
DataStreams:sgpsondewrpnC1.a0, sgpsondewrpnC1.a1
Description:
DQR No:                               Platform: sondeC1

Subject: Apparent Interference Signal in Sounding CF:951003:1429

Date Submitted:   October 6, 1995
Submitted By:                         _X_  Instrument Mentor
                                      ___  EST Member
                                      ___  Science Team Member
                                      ___  Other _____________________________

For questions or problems, please contact the ARM Experiment Center at
509-375-6898 or via email at dqr@arm.gov.

Platform/Measurement:
 What level data: (raw,a0,a1,b1,c1 etc):  All

    What location was the data collected at:     CF

    Period of time in question
  Begin Date   10/03/95   Time   XX:XX:XX (GMT)
  End Date     10/03/95   Time   15:25:24 (GMT)

 Data should be labeled:
 ___  questionable                      _X_  All data fields affected
 _X_  incorrect                         ___  Only some data fields affected
 ___  wrong calibration
 ___  others

 Discussion of Problem:  It appears as if the ground station started to
 receive data from a foreign sonde (i.e., not the sonde originally being
 tracked) at an altitude of about 12.7 km.  At this point the RH signal
 drops out, and both the pressure and temperature signals are noisy and
 look unnatural.


Other observations/measurements impacted by this problem:


Suggested Corrections of the Problem: (e.g. change calibration factor and
recompute, flag data with this comment, etc.)

    Flag


Data Processing Notes                Date
Measurements:sgpsondewrpnC1.a0:
  • pressure at constant pressure surface(pres)
  • Relative humidity scaled, by total column amount from MWR(rh)
  • north latitude for all the input platforms.(lat)
  • surface wind speed(wspd)
  • Ascent Rate(asc)
  • altitude above sea levelaltunits(alt)
  • Dry-Bulb Temperature(tdry)
  • east longitude for all the input platforms.(lon)
  • Wind Status(wstat)
  • Wind Direction(deg)
  • Surface dew point temperature(dp)
  • Time offset of tweaks from base_time(time_offset)
  • Time offset from base_time(base_time)

sgpsondewrpnC1.a1:
  • east longitude for all the input platforms.(lon)
  • model meridional wind velocity(v_wind)
  • Ascent Rate(asc)
  • Time offset of tweaks from base_time(time_offset)
  • Wind Status(wstat)
  • Relative humidity scaled, by total column amount from MWR(rh)
  • altitude above sea levelaltunits(alt)
  • Wind Direction(deg)
  • pressure at constant pressure surface(pres)
  • Dry-Bulb Temperature(tdry)
  • model zonal wind velocity(u_wind)
  • Time offset from base_time(base_time)
  • Surface dew point temperature(dp)
  • surface wind speed(wspd)
  • north latitude for all the input platforms.(lat)


Back To Table of Contents

DQRID : D951006.4
Start DateStart TimeEnd DateEnd Time
10/04/1995000010/04/19950707
Subject:
Apparent Interference Signal in Sounding
DataStreams:sgpsondewrpnC1.a0, sgpsondewrpnC1.a1
Description:
DQR No:                               Platform: sondeC1

Subject: Apparent Interference Signal in Sounding CF:951004:0530

Date Submitted:   October 6, 1995
Submitted By:                         _X_  Instrument Mentor
                                      ___  EST Member
                                      ___  Science Team Member
                                      ___  Other _____________________________

For questions or problems, please contact the ARM Experiment Center at
509-375-6898 or via email at dqr@arm.gov.

Platform/Measurement:
 What level data: (raw,a0,a1,b1,c1 etc):  All

    What location was the data collected at:     CF

    Period of time in question
  Begin Date   10/04/95   Time   XX:XX:XX (GMT)
  End Date     10/04/95   Time   07:07:50 (GMT)

 Data should be labeled:
 ___  questionable                      _X_  All data fields affected
 _X_  incorrect                         ___  Only some data fields affected
 ___  wrong calibration
 ___  others

 Discussion of Problem:  It appears as if the ground station started to
 receive data from a foreign sonde (i.e., not the sonde originally being
 tracked) at an altitude of about 12.0 km.  At this point the RH signal
 drops out, and both the pressure and temperature signals are noisy and
 look unnatural.


Other observations/measurements impacted by this problem:


Suggested Corrections of the Problem: (e.g. change calibration factor and
recompute, flag data with this comment, etc.)

    Flag


Data Processing Notes                Date
Measurements:sgpsondewrpnC1.a0:
  • pressure at constant pressure surface(pres)
  • Relative humidity scaled, by total column amount from MWR(rh)
  • north latitude for all the input platforms.(lat)
  • surface wind speed(wspd)
  • Ascent Rate(asc)
  • altitude above sea levelaltunits(alt)
  • Dry-Bulb Temperature(tdry)
  • east longitude for all the input platforms.(lon)
  • Wind Status(wstat)
  • Wind Direction(deg)
  • Surface dew point temperature(dp)
  • Time offset of tweaks from base_time(time_offset)
  • Time offset from base_time(base_time)

sgpsondewrpnC1.a1:
  • east longitude for all the input platforms.(lon)
  • model meridional wind velocity(v_wind)
  • Ascent Rate(asc)
  • Time offset of tweaks from base_time(time_offset)
  • Wind Status(wstat)
  • Relative humidity scaled, by total column amount from MWR(rh)
  • altitude above sea levelaltunits(alt)
  • Wind Direction(deg)
  • pressure at constant pressure surface(pres)
  • Dry-Bulb Temperature(tdry)
  • model zonal wind velocity(u_wind)
  • Time offset from base_time(base_time)
  • Surface dew point temperature(dp)
  • surface wind speed(wspd)
  • north latitude for all the input platforms.(lat)


Back To Table of Contents

DQRID : D951006.5
Start DateStart TimeEnd DateEnd Time
10/04/1995000010/04/19950945
Subject:
Apparent Interference Signal in Sounding
DataStreams:sgpsondewrpnC1.a0, sgpsondewrpnC1.a1
Description:
DQR No:                               Platform: sondeC1

Subject: Apparent Interference Signal in Sounding CF:951004:0834

Date Submitted:   October 6, 1995
Submitted By:                         _X_  Instrument Mentor
                                      ___  EST Member
                                      ___  Science Team Member
                                      ___  Other _____________________________

For questions or problems, please contact the ARM Experiment Center at
509-375-6898 or via email at dqr@arm.gov.

Platform/Measurement:
 What level data: (raw,a0,a1,b1,c1 etc):  All

    What location was the data collected at:     CF

    Period of time in question
  Begin Date   10/04/95   Time   XX:XX:XX (GMT)
  End Date     10/04/95   Time   09:45:30 (GMT)

 Data should be labeled:
 ___  questionable                      _X_  All data fields affected
 _X_  incorrect                         ___  Only some data fields affected
 ___  wrong calibration
 ___  others

 Discussion of Problem:  It appears as if the ground station started to
 receive data from a foreign sonde (i.e., not the sonde originally being
 tracked) at an altitude of about 11.5 km.  At this point the RH signal
 and the pressure and temperature signals are noisy and look unnatural.


Other observations/measurements impacted by this problem:


Suggested Corrections of the Problem: (e.g. change calibration factor and
recompute, flag data with this comment, etc.)

    Flag


Data Processing Notes                Date
Measurements:sgpsondewrpnC1.a0:
  • pressure at constant pressure surface(pres)
  • Relative humidity scaled, by total column amount from MWR(rh)
  • north latitude for all the input platforms.(lat)
  • surface wind speed(wspd)
  • Ascent Rate(asc)
  • altitude above sea levelaltunits(alt)
  • Dry-Bulb Temperature(tdry)
  • east longitude for all the input platforms.(lon)
  • Wind Status(wstat)
  • Wind Direction(deg)
  • Surface dew point temperature(dp)
  • Time offset of tweaks from base_time(time_offset)
  • Time offset from base_time(base_time)

sgpsondewrpnC1.a1:
  • east longitude for all the input platforms.(lon)
  • model meridional wind velocity(v_wind)
  • Ascent Rate(asc)
  • Time offset of tweaks from base_time(time_offset)
  • Wind Status(wstat)
  • Relative humidity scaled, by total column amount from MWR(rh)
  • altitude above sea levelaltunits(alt)
  • Wind Direction(deg)
  • pressure at constant pressure surface(pres)
  • Dry-Bulb Temperature(tdry)
  • model zonal wind velocity(u_wind)
  • Time offset from base_time(base_time)
  • Surface dew point temperature(dp)
  • surface wind speed(wspd)
  • north latitude for all the input platforms.(lat)


Back To Table of Contents

DQRID : D951006.6
Start DateStart TimeEnd DateEnd Time
10/04/1995000010/04/19951312
Subject:
Apparent Interference Signal in Sounding
DataStreams:sgpsondewrpnC1.a0, sgpsondewrpnC1.a1
Description:
DQR No:                               Platform: sondeC1

Subject: Apparent Interference Signal in Sounding CF:951004:1130

Date Submitted:   October 6, 1995
Submitted By:                         _X_  Instrument Mentor
                                      ___  EST Member
                                      ___  Science Team Member
                                      ___  Other _____________________________

For questions or problems, please contact the ARM Experiment Center at
509-375-6898 or via email at dqr@arm.gov.

Platform/Measurement:
 What level data: (raw,a0,a1,b1,c1 etc):  All

    What location was the data collected at:     CF

    Period of time in question
  Begin Date   10/04/95   Time   XX:XX:XX (GMT)
  End Date     10/04/95   Time   13:12:02 (GMT)

 Data should be labeled:
 ___  questionable                      _X_  All data fields affected
 _X_  incorrect                         ___  Only some data fields affected
 ___  wrong calibration
 ___  others

 Discussion of Problem:  It appears as if the ground station started to
 receive data from a foreign sonde (i.e., not the sonde originally being
 tracked) at an altitude of about 17.0 km.  At this point the RH signal
 drops out and the pressure and temperature signals are noisy and look
 unnatural.


Other observations/measurements impacted by this problem:


Suggested Corrections of the Problem: (e.g. change calibration factor and
recompute, flag data with this comment, etc.)

    Flag


Data Processing Notes                Date
Measurements:sgpsondewrpnC1.a0:
  • pressure at constant pressure surface(pres)
  • Relative humidity scaled, by total column amount from MWR(rh)
  • north latitude for all the input platforms.(lat)
  • surface wind speed(wspd)
  • Ascent Rate(asc)
  • altitude above sea levelaltunits(alt)
  • Dry-Bulb Temperature(tdry)
  • east longitude for all the input platforms.(lon)
  • Wind Status(wstat)
  • Wind Direction(deg)
  • Surface dew point temperature(dp)
  • Time offset of tweaks from base_time(time_offset)
  • Time offset from base_time(base_time)

sgpsondewrpnC1.a1:
  • east longitude for all the input platforms.(lon)
  • model meridional wind velocity(v_wind)
  • Ascent Rate(asc)
  • Time offset of tweaks from base_time(time_offset)
  • Wind Status(wstat)
  • Relative humidity scaled, by total column amount from MWR(rh)
  • altitude above sea levelaltunits(alt)
  • Wind Direction(deg)
  • pressure at constant pressure surface(pres)
  • Dry-Bulb Temperature(tdry)
  • model zonal wind velocity(u_wind)
  • Time offset from base_time(base_time)
  • Surface dew point temperature(dp)
  • surface wind speed(wspd)
  • north latitude for all the input platforms.(lat)


Back To Table of Contents

DQRID : D960122.1
Start DateStart TimeEnd DateEnd Time
01/17/1996203101/17/19962031
Subject:
Jump in pressure value upon launch
DataStreams:sgpsondewrpnC1.a0, sgpsondewrpnC1.a1
Description:
DQR No:                               Platform:  SGPSONDEC1

Subject:        Jump in pressure value upon launch 960117:2031

Date Submitted: 1/22/96
Submitted By:   Barry Lesht           _X_  Instrument Mentor
                                      ___  EST Member
                                      ___  Science Team Member
                                      ___  Other _____________________________
 
For questions or problems, please contact the ARM Experiment Center at
509-375-6898 or via email at dqr@arm.gov.

Platform/Measurement: sgpsondeWRPNC1/ (alt, asc, press)
    What level data: (raw,a0,a1,b1,c1 etc): all

    What location was the data collected at: SGP/CF
 
    Period of time in question
        Begin Date  1/17/96    Time   20:31    (GMT)
        End Date               Time            (GMT)

 Data should be labeled:
 ___  questionable                      ___  All data fields affected
 _X_  incorrect                         _X_  Only some data fields affected
 ___  wrong calibration
 ___  others 
 
 Discussion of Problem:

It appears that the pressure sensor was jarred during launch and jumped
readings from 975.4 hPa at the surface to 950.2 hPa at the first sample
after launch.  This results in erroneous altitude values throughout the
sounding and erroneous ascent rate values during the first 30 seconds.
The relative altitude calculations after the second sample should be
correct.  Although the surface wind speed was recorded at 10.3 m/s,
the next wind value is reported as 18.2 m/s - quite strong.  The bouncing
of the balloon during the launch might account for the abnormal jarring
of the sonde.


 
Other observations/measurements impacted by this problem:



Suggested Corrections of the Problem: (e.g. change calibration factor and
recompute, flag data with this comment, etc.)

Flag data.

Data Processing Notes                Date
Measurements:sgpsondewrpnC1.a0:
  • pressure at constant pressure surface(pres)
  • Relative humidity scaled, by total column amount from MWR(rh)
  • north latitude for all the input platforms.(lat)
  • surface wind speed(wspd)
  • Ascent Rate(asc)
  • altitude above sea levelaltunits(alt)
  • Dry-Bulb Temperature(tdry)
  • east longitude for all the input platforms.(lon)
  • Wind Status(wstat)
  • Wind Direction(deg)
  • Surface dew point temperature(dp)
  • Time offset of tweaks from base_time(time_offset)
  • Time offset from base_time(base_time)

sgpsondewrpnC1.a1:
  • east longitude for all the input platforms.(lon)
  • model meridional wind velocity(v_wind)
  • Ascent Rate(asc)
  • Time offset of tweaks from base_time(time_offset)
  • Wind Status(wstat)
  • Relative humidity scaled, by total column amount from MWR(rh)
  • altitude above sea levelaltunits(alt)
  • Wind Direction(deg)
  • pressure at constant pressure surface(pres)
  • Dry-Bulb Temperature(tdry)
  • model zonal wind velocity(u_wind)
  • Time offset from base_time(base_time)
  • Surface dew point temperature(dp)
  • surface wind speed(wspd)
  • north latitude for all the input platforms.(lat)


Back To Table of Contents

DQRID : D960122.2
Start DateStart TimeEnd DateEnd Time
01/18/1996053301/18/19960533
Subject:
Jump in pressure value upon launch
DataStreams:sgpsondewrpnC1.a0, sgpsondewrpnC1.a1
Description:
DQR No:                               Platform:  SGPSONDEC1

Subject:        Jump in pressure value upon launch 960118:0533

Date Submitted: 1/22/96
Submitted By:   Barry Lesht           _X_  Instrument Mentor
                                      ___  EST Member
                                      ___  Science Team Member
                                      ___  Other _____________________________
 
For questions or problems, please contact the ARM Experiment Center at
509-375-6898 or via email at dqr@arm.gov.

Platform/Measurement: sgpsondeWRPNC1/ (alt, asc, press)
    What level data: (raw,a0,a1,b1,c1 etc): all

    What location was the data collected at: SGP/CF
 
    Period of time in question
        Begin Date  1/18/96    Time   05:33    (GMT)
        End Date               Time            (GMT)

 Data should be labeled:
 ___  questionable                      ___  All data fields affected
 _X_  incorrect                         _X_  Only some data fields affected
 ___  wrong calibration
 ___  others 
 
 Discussion of Problem:

It appears that the pressure sensor was jarred during launch and jumped
readings from 973.1 hPa at the surface to 960.7 hPa at the first sample
after launch.  This results in erroneous altitude values throughout the
sounding and erroneous ascent rate values during the first 30 seconds.
The relative altitude calculations after the second sample should be
correct.  The surface winds were quite strong, 16.5 m/s.  The bouncing
of the balloon during the launch might account for the abnormal jarring
of the sonde.

 
Other observations/measurements impacted by this problem:


Suggested Corrections of the Problem: (e.g. change calibration factor and
recompute, flag data with this comment, etc.)

Flag data.

Data Processing Notes                Date
Measurements:sgpsondewrpnC1.a0:
  • pressure at constant pressure surface(pres)
  • Relative humidity scaled, by total column amount from MWR(rh)
  • north latitude for all the input platforms.(lat)
  • surface wind speed(wspd)
  • Ascent Rate(asc)
  • altitude above sea levelaltunits(alt)
  • Dry-Bulb Temperature(tdry)
  • east longitude for all the input platforms.(lon)
  • Wind Status(wstat)
  • Wind Direction(deg)
  • Surface dew point temperature(dp)
  • Time offset of tweaks from base_time(time_offset)
  • Time offset from base_time(base_time)

sgpsondewrpnC1.a1:
  • east longitude for all the input platforms.(lon)
  • model meridional wind velocity(v_wind)
  • Ascent Rate(asc)
  • Time offset of tweaks from base_time(time_offset)
  • Wind Status(wstat)
  • Relative humidity scaled, by total column amount from MWR(rh)
  • altitude above sea levelaltunits(alt)
  • Wind Direction(deg)
  • pressure at constant pressure surface(pres)
  • Dry-Bulb Temperature(tdry)
  • model zonal wind velocity(u_wind)
  • Time offset from base_time(base_time)
  • Surface dew point temperature(dp)
  • surface wind speed(wspd)
  • north latitude for all the input platforms.(lat)


Back To Table of Contents

DQRID : D960129.1
Start DateStart TimeEnd DateEnd Time
12/13/1995053112/13/19950531
Subject:
Bad surface pressure sounding
DataStreams:sgpsondewrpnC1.a0, sgpsondewrpnC1.a1
Description:
DQR No:                               Platform: sgpsondeC1

Subject: Bad surface pressure sounding 12/13/95:0531

Date Submitted:  1/29/96
Submitted By:                         _X_  Instrument Mentor
                                      ___  EST Member
                                      ___  Science Team Member
                                      ___  Other _____________________________
 
For questions or problems, please contact the ARM Experiment Center at
509-375-6898 or via email at dqr@arm.gov.

Platform/Measurement: sgpsondewrpnC1/all
	What level data: (raw,a0,a1,b1,c1 etc):

    What location was the data collected at: CF
 
    Period of time in question
 	Begin Date  12/13/95   Time   05:31    (GMT)
 	End Date               Time            (GMT)

 Data should be labeled:
 ___  questionable                      ___  All data fields affected
 _X_  incorrect                         _X_  Only some data fields affected
 ___  wrong calibration
 ___  others 
 
 Discussion of Problem:

The surface pressure for this sounding was entered by the operator as 1010 hPa.
The first pressure value reported by the sonde is 971.8 hPa. Pressure at SMOS13
at 05:30 was 973.7 hPa.  The reason for the discrepency between the apparent
surface pressure and that entered by the operator is unknown.

 
Other observations/measurements impacted by this problem:

None

Suggested Corrections of the Problem: (e.g. change calibration factor and
recompute, flag data with this comment, etc.)

Flag data.

Data Processing Notes                Date
Measurements:sgpsondewrpnC1.a0:
  • pressure at constant pressure surface(pres)
  • Relative humidity scaled, by total column amount from MWR(rh)
  • north latitude for all the input platforms.(lat)
  • surface wind speed(wspd)
  • Ascent Rate(asc)
  • altitude above sea levelaltunits(alt)
  • Dry-Bulb Temperature(tdry)
  • east longitude for all the input platforms.(lon)
  • Wind Status(wstat)
  • Wind Direction(deg)
  • Surface dew point temperature(dp)
  • Time offset of tweaks from base_time(time_offset)
  • Time offset from base_time(base_time)

sgpsondewrpnC1.a1:
  • east longitude for all the input platforms.(lon)
  • model meridional wind velocity(v_wind)
  • Ascent Rate(asc)
  • Time offset of tweaks from base_time(time_offset)
  • Wind Status(wstat)
  • Relative humidity scaled, by total column amount from MWR(rh)
  • altitude above sea levelaltunits(alt)
  • Wind Direction(deg)
  • pressure at constant pressure surface(pres)
  • Dry-Bulb Temperature(tdry)
  • model zonal wind velocity(u_wind)
  • Time offset from base_time(base_time)
  • Surface dew point temperature(dp)
  • surface wind speed(wspd)
  • north latitude for all the input platforms.(lat)


Back To Table of Contents

DQRID : D960202.2
Start DateStart TimeEnd DateEnd Time
02/01/1996112902/01/19961129
Subject:
bad pressure sounding
DataStreams:sgpsondewrpnC1.a0, sgpsondewrpnC1.a1
Description:
DQR No:                               Platform: sgpsondeC1

Subject: Bad pressure sounding 02/01/96:1129

Date Submitted:  2/01/96
Submitted By:                         _X_  Instrument Mentor
                                      ___  EST Member
                                      ___  Science Team Member
                                      ___  Other _____________________________

For questions or problems, please contact the ARM Experiment Center at
509-375-6898 or via email at dqr@arm.gov.

Platform/Measurement: sgpsondewrpnC1/all
 What level data: (raw,a0,a1,b1,c1 etc):

    What location was the data collected at: CF

    Period of time in question
  Begin Date  02/01/96   Time   11:29    (GMT)
  End Date               Time            (GMT)

 Data should be labeled:
 ___  questionable                      ___  All data fields affected
 _X_  incorrect                         _X_  Only some data fields affected
 ___  wrong calibration
 ___  others

 Discussion of Problem:

The surface pressure for this sounding was entered by the operator as 962.6.
The first pressure value reported by the sonde is 962.4 hPa. The surface
pressure in the previous (0533) and subsequent (1429) soundings were 983.3
and 985.7 respectively.  SMOS13 pressures were in the 983+ range during
this same period.  It appears that the sonde pressure sensor was bad and
was used as the source of the surface pressure (this is CF standard procedure).
Both the pressure and altitude values for this sounding are likely incorrect.

Other observations/measurements impacted by this problem:

None

Suggested Corrections of the Problem: (e.g. change calibration factor and
recompute, flag data with this comment, etc.)

Flag data.

Data Processing Notes                Date
Measurements:sgpsondewrpnC1.a0:
  • pressure at constant pressure surface(pres)
  • Relative humidity scaled, by total column amount from MWR(rh)
  • north latitude for all the input platforms.(lat)
  • surface wind speed(wspd)
  • Ascent Rate(asc)
  • altitude above sea levelaltunits(alt)
  • Dry-Bulb Temperature(tdry)
  • east longitude for all the input platforms.(lon)
  • Wind Status(wstat)
  • Wind Direction(deg)
  • Surface dew point temperature(dp)
  • Time offset of tweaks from base_time(time_offset)
  • Time offset from base_time(base_time)

sgpsondewrpnC1.a1:
  • east longitude for all the input platforms.(lon)
  • model meridional wind velocity(v_wind)
  • Ascent Rate(asc)
  • Time offset of tweaks from base_time(time_offset)
  • Wind Status(wstat)
  • Relative humidity scaled, by total column amount from MWR(rh)
  • altitude above sea levelaltunits(alt)
  • Wind Direction(deg)
  • pressure at constant pressure surface(pres)
  • Dry-Bulb Temperature(tdry)
  • model zonal wind velocity(u_wind)
  • Time offset from base_time(base_time)
  • Surface dew point temperature(dp)
  • surface wind speed(wspd)
  • north latitude for all the input platforms.(lat)


Back To Table of Contents

DQRID : D960223.1
Start DateStart TimeEnd DateEnd Time
02/21/1996113102/21/19961131
Subject:
Incorrect surface pressure sounding
DataStreams:sgpsondewrpnC1.a0, sgpsondewrpnC1.a1
Description:
DQR No:                               Platform: sgpsondeC1

Subject: Incorrect surface pressure sounding 960221:1131

Date Submitted:  2/22/96
Submitted By:                         _X_  Instrument Mentor
                                      ___  EST Member
                                      ___  Science Team Member
                                      ___  Other _____________________________

For questions or problems, please contact the ARM Experiment Center at
509-375-6898 or via email at dqr@arm.gov.

Platform/Measurement: sgpsondewrpnC1/all
    What level data: (raw,a0,a1,b1,c1 etc):

    What location was the data collected at: CF

    Period of time in question
        Begin Date  02/21/96   Time   11:31    (GMT)
        End Date               Time            (GMT)

 Data should be labeled:
 ___  questionable                      ___  All data fields affected
 _X_  incorrect                         _X_  Only some data fields affected
 ___  wrong calibration
 ___  others

 Discussion of Problem:

The surface pressure for this sounding was entered by the operator as 995.6 hPa.
The first pressure value reported by the sonde is 972.3 hPa.  It appears that
the operator entered sea-level pressure reported by the WeatherMeasureII instead
of sonde surface pressure. The altitude values for this sounding are likely
incorrect.

Other observations/measurements impacted by this problem:

None

Suggested Corrections of the Problem: (e.g. change calibration factor and
recompute, flag data with this comment, etc.)

Flag data and remind operators of current procedures.
Measurements:sgpsondewrpnC1.a0:
  • pressure at constant pressure surface(pres)
  • Relative humidity scaled, by total column amount from MWR(rh)
  • north latitude for all the input platforms.(lat)
  • surface wind speed(wspd)
  • Ascent Rate(asc)
  • altitude above sea levelaltunits(alt)
  • Dry-Bulb Temperature(tdry)
  • east longitude for all the input platforms.(lon)
  • Wind Status(wstat)
  • Wind Direction(deg)
  • Surface dew point temperature(dp)
  • Time offset of tweaks from base_time(time_offset)
  • Time offset from base_time(base_time)

sgpsondewrpnC1.a1:
  • east longitude for all the input platforms.(lon)
  • model meridional wind velocity(v_wind)
  • Ascent Rate(asc)
  • Time offset of tweaks from base_time(time_offset)
  • Wind Status(wstat)
  • Relative humidity scaled, by total column amount from MWR(rh)
  • altitude above sea levelaltunits(alt)
  • Wind Direction(deg)
  • pressure at constant pressure surface(pres)
  • Dry-Bulb Temperature(tdry)
  • model zonal wind velocity(u_wind)
  • Time offset from base_time(base_time)
  • Surface dew point temperature(dp)
  • surface wind speed(wspd)
  • north latitude for all the input platforms.(lat)


Back To Table of Contents

DQRID : D960223.2
Start DateStart TimeEnd DateEnd Time
02/21/1996143002/21/19961430
Subject:
Incorrect surface pressure sounding
DataStreams:sgpsondewrpnC1.a0, sgpsondewrpnC1.a1
Description:
DQR No:                               Platform: sgpsondeC1

Subject: Incorrect surface pressure sounding 960221:1430

Date Submitted:  2/22/96
Submitted By:                         _X_  Instrument Mentor
                                      ___  EST Member
                                      ___  Science Team Member
                                      ___  Other _____________________________

For questions or problems, please contact the ARM Experiment Center at
509-375-6898 or via email at dqr@arm.gov.

Platform/Measurement: sgpsondewrpnC1/all
    What level data: (raw,a0,a1,b1,c1 etc):

    What location was the data collected at: CF

    Period of time in question
        Begin Date  02/21/96   Time   14:30    (GMT)
        End Date               Time            (GMT)

 Data should be labeled:
 ___  questionable                      ___  All data fields affected
 _X_  incorrect                         _X_  Only some data fields affected
 ___  wrong calibration
 ___  others

 Discussion of Problem:

The surface pressure for this sounding was entered by the operator as 995.6 hPa.
The first pressure value reported by the sonde is 969.7 hPa.  It appears that
the operator entered sea-level pressure reported by the WeatherMeasureII instead
of sonde surface pressure. The altitude values for this sounding are likely
incorrect.

Other observations/measurements impacted by this problem:

None

Suggested Corrections of the Problem: (e.g. change calibration factor and
recompute, flag data with this comment, etc.)

Flag data and remind operators of current procedures.
Measurements:sgpsondewrpnC1.a0:
  • pressure at constant pressure surface(pres)
  • Relative humidity scaled, by total column amount from MWR(rh)
  • north latitude for all the input platforms.(lat)
  • surface wind speed(wspd)
  • Ascent Rate(asc)
  • altitude above sea levelaltunits(alt)
  • Dry-Bulb Temperature(tdry)
  • east longitude for all the input platforms.(lon)
  • Wind Status(wstat)
  • Wind Direction(deg)
  • Surface dew point temperature(dp)
  • Time offset of tweaks from base_time(time_offset)
  • Time offset from base_time(base_time)

sgpsondewrpnC1.a1:
  • east longitude for all the input platforms.(lon)
  • model meridional wind velocity(v_wind)
  • Ascent Rate(asc)
  • Time offset of tweaks from base_time(time_offset)
  • Wind Status(wstat)
  • Relative humidity scaled, by total column amount from MWR(rh)
  • altitude above sea levelaltunits(alt)
  • Wind Direction(deg)
  • pressure at constant pressure surface(pres)
  • Dry-Bulb Temperature(tdry)
  • model zonal wind velocity(u_wind)
  • Time offset from base_time(base_time)
  • Surface dew point temperature(dp)
  • surface wind speed(wspd)
  • north latitude for all the input platforms.(lat)


Back To Table of Contents

DQRID : D960229.2
Start DateStart TimeEnd DateEnd Time
01/20/1995113009/22/19951130
Subject:
SGP/SONDE/C1 - incorrect factory RH calib-radiosondes
DataStreams:sgpsondewrpnC1.a0, sgpsondewrpnC1.a1
Description:
Ongoing investigation of differences between preciptiable water vapor
measured by the microwave radiometer and precipitable water vapor estimated
by integrating the radiosonde-measured profile of water vapor density, along
with isolated periods of anomalous behavior in the AERI/LBLRTM QME results
led to the suggestion that the calibration of some radiosondes may be suspect.
One group of radiosondes, calibrated in November 1994, seemed particularly
irregular.  I met with the manufacturer on February 7 to show them my
results and discuss this issue with them.  The manufacturer agreed that
the data were suggestive of a calibration problem and offered to review
their calibration records for the period in question.

The initial results of the manufacture's investigation were sent to me
on February 27.  The manufacturer found that radiosondes assembled
between 10/26/94 and 11/22/94 were incorrectly calibrated.  The incorrect
calibration affected only the relative humidity measurement; the nature
of the calibration error is non-linear, with the radiosondes meeting
the specified +/- 2% RH accuracy at both 20%RH (+45 degC) and 0%RH (room
temperature).  The error in calibration occurs at high RH and low temperature
(approximate saturation at -30 degC) and can be as large as 10%RH with
the radiosonde reading high.  The direction of this error agrees with
the observation of negative integrated residuals in the AERI ch 1 region
made by Tony Clough and the tendency toward greater than 'normal' differences
in PWV when compared to the MWR when these sondes were used.

The cause of the calibration error was the addition of new, high RH,
quality control check (-30 degC) into the manufacturing stream that
required a change in the calibration software.  The new software mistakenly
loaded an incorrect parameter file that caused the calibration to be
off at high RH - this was not noticed at the time because the radiosondes
passed the regular production QC checks and the failure to agree at the
new QC value was thought to result from a problem with the new reference
standard.  Troubleshooting the entire calibration system in an effort
to incorporate the new QC check was conducted along with normal production,
and took about a month to complete.  The troubleshooting including adjustment
of the calibration software, at which time the correct parameter file
happened to be reloaded, and after which the radiosondes met the desired
specification at the high RH value.

According to the manufacturer, approximately 1900 radiosondes were calibrated
during the period in question.  Sondes from this period were used at all
CART facilities.  At least 1178 soundings involving these sondes were
included in the QME results I looked at (some QME results were discarded
because of problems with either the MWR data or the sounding data).  The
distribution of these 1178 by facility is:

Facility   Number of Sondes          First Used         Last Used
           (based on QME)
   CF            316               1/20/95 (11:30)    9/22/95 (11:30)
   B1            143               2/21/95 (17:30)    9/29/95 ( 8:30)
   B4            313               4/ 6/95 (17:30)   11/ 7/95 (17:28)
   B5            153               4/14/95 (17:30)   12/14/95 (17:30)
   B6            253               3/22/95 (17:30)   10/19/95 (17:30)

The sondes can be recognized by decoding the serial_number metadata word
in the sounding netCDF file.  The serial number of the sondes in question
is a  number (8 or 9 digit) of the form DDMMYTTPP where DD is the day of
the month (leading zero missing in the netCDF data), MM is the month +80
(e.g. 91 for November), Y is the last digit of the year (4 for 1994),
TT is the calibration tray ID, and PP is the position of the sonde in
the calibration tray.  The sondes in question will therefore have serial
numbers coded between 26904TTPP and 22914TTPP.
Measurements:sgpsondewrpnC1.a0:
  • Relative humidity scaled, by total column amount from MWR(rh)

sgpsondewrpnC1.a1:
  • Relative humidity scaled, by total column amount from MWR(rh)


Back To Table of Contents

DQRID : D960403.1
Start DateStart TimeEnd DateEnd Time
04/01/1996143004/01/19961430
Subject:
Bad surface pressure sounding
DataStreams:sgpsondewrpnC1.a0, sgpsondewrpnC1.a1
Description:
DQR No:                               Platform: sgpsondeC1

Subject: Bad surface pressure sounding 04/01/96 14:30

Date Submitted:  4/2/96
Submitted By:                         _X_  Instrument Mentor
                                      ___  EST Member
                                      ___  Science Team Member
                                      ___  Other _____________________________
 
For questions or problems, please contact the ARM Experiment Center at
509-375-6898 or via email at dqr@arm.gov.

Platform/Measurement: sgpsondewrpnC1/all
    What level data: (raw,a0,a1,b1,c1 etc):

    What location was the data collected at: CF
 
    Period of time in question
        Begin Date   4/01/96   Time   14:30    (GMT)
        End Date               Time            (GMT)

 Data should be labeled:
 ___  questionable                      ___  All data fields affected
 _X_  incorrect                         _X_  Only some data fields affected
 ___  wrong calibration
 ___  others 
 
 Discussion of Problem:

The surface pressure for this sounding was entered by the operator as 1016.1
hPa. The first pressure value reported by the sonde is 988.3 hPa. The surface
pressure at 11:29 was 987.6 and at 17:32 was 988.3.  It appears that the
operator entered the sea-level pressure rather than the station pressure.

Note that this will affect the altitude calculation throughout the sounding.
 
Other observations/measurements impacted by this problem:

None

Suggested Corrections of the Problem: (e.g. change calibration factor and
recompute, flag data with this comment, etc.)

Flag data.
Measurements:sgpsondewrpnC1.a0:
  • pressure at constant pressure surface(pres)
  • Relative humidity scaled, by total column amount from MWR(rh)
  • north latitude for all the input platforms.(lat)
  • surface wind speed(wspd)
  • Ascent Rate(asc)
  • altitude above sea levelaltunits(alt)
  • Dry-Bulb Temperature(tdry)
  • east longitude for all the input platforms.(lon)
  • Wind Status(wstat)
  • Wind Direction(deg)
  • Surface dew point temperature(dp)
  • Time offset of tweaks from base_time(time_offset)
  • Time offset from base_time(base_time)

sgpsondewrpnC1.a1:
  • east longitude for all the input platforms.(lon)
  • model meridional wind velocity(v_wind)
  • Ascent Rate(asc)
  • Time offset of tweaks from base_time(time_offset)
  • Wind Status(wstat)
  • Relative humidity scaled, by total column amount from MWR(rh)
  • altitude above sea levelaltunits(alt)
  • Wind Direction(deg)
  • pressure at constant pressure surface(pres)
  • Dry-Bulb Temperature(tdry)
  • model zonal wind velocity(u_wind)
  • Time offset from base_time(base_time)
  • Surface dew point temperature(dp)
  • surface wind speed(wspd)
  • north latitude for all the input platforms.(lat)


Back To Table of Contents

DQRID : D960415.1
Start DateStart TimeEnd DateEnd Time
04/12/1996053104/12/19960531
Subject:
Bad surface pressure sounding
DataStreams:sgpsondewrpnC1.a0, sgpsondewrpnC1.a1
Description:
DQR No:                               Platform: sgpsondeC1

Subject: Bad surface pressure sounding 04/12/96 05:31

Date Submitted:  4/15/96
Submitted By:                         _X_  Instrument Mentor
                                      ___  EST Member
                                      ___  Science Team Member
                                      ___  Other _____________________________
 
For questions or problems, please contact the ARM Experiment Center at
509-375-6898 or via email at dqr@arm.gov.

Platform/Measurement: sgpsondewrpnC1/all
    What level data: (raw,a0,a1,b1,c1 etc):

    What location was the data collected at: CF
 
    Period of time in question
    Begin Date   4/12/96   Time   05:31    (GMT)
    End Date               Time            (GMT)

 Data should be labeled:
 ___  questionable                      ___  All data fields affected
 _X_  incorrect                         _X_  Only some data fields affected
 ___  wrong calibration
 ___  others 
 
 Discussion of Problem:

The surface pressure for this sounding was entered by the operator as 996.1
hPa. The first pressure value reported by the sonde is 964.2 hPa. The surface
pressure at 11:30 was 972.0 and at 14:30 was 973.5.  It appears that the
operator entered the sea-level pressure rather than the station pressure.
The SMOS pressure during the period is in the 960-970 range.

Note that this will affect the altitude calculation throughout the sounding.
 
Other observations/measurements impacted by this problem:

None

Suggested Corrections of the Problem: (e.g. change calibration factor and
recompute, flag data with this comment, etc.)

Flag data.

Data Processing Notes                Date
Measurements:sgpsondewrpnC1.a0:
  • pressure at constant pressure surface(pres)
  • Relative humidity scaled, by total column amount from MWR(rh)
  • north latitude for all the input platforms.(lat)
  • surface wind speed(wspd)
  • Ascent Rate(asc)
  • altitude above sea levelaltunits(alt)
  • Dry-Bulb Temperature(tdry)
  • east longitude for all the input platforms.(lon)
  • Wind Status(wstat)
  • Wind Direction(deg)
  • Surface dew point temperature(dp)
  • Time offset of tweaks from base_time(time_offset)
  • Time offset from base_time(base_time)

sgpsondewrpnC1.a1:
  • east longitude for all the input platforms.(lon)
  • model meridional wind velocity(v_wind)
  • Ascent Rate(asc)
  • Time offset of tweaks from base_time(time_offset)
  • Wind Status(wstat)
  • Relative humidity scaled, by total column amount from MWR(rh)
  • altitude above sea levelaltunits(alt)
  • Wind Direction(deg)
  • pressure at constant pressure surface(pres)
  • Dry-Bulb Temperature(tdry)
  • model zonal wind velocity(u_wind)
  • Time offset from base_time(base_time)
  • Surface dew point temperature(dp)
  • surface wind speed(wspd)
  • north latitude for all the input platforms.(lat)


Back To Table of Contents

DQRID : D960506.1
Start DateStart TimeEnd DateEnd Time
05/06/1996052905/06/19960529
Subject:
Bad surface pressure sounding
DataStreams:sgpsondewrpnC1.a0, sgpsondewrpnC1.a1
Description:
DQR No:                               Platform: sgpsondeC1

Subject: Bad surface pressure sounding 05/04/96 05:29

Date Submitted:  5/06/96
Submitted By:                         _X_  Instrument Mentor
                                      ___  EST Member
                                      ___  Science Team Member
                                      ___  Other _____________________________
 
For questions or problems, please contact the ARM Experiment Center at
509-375-6898 or via email at dqr@arm.gov.

Platform/Measurement: sgpsondewrpnC1/all
    What level data: (raw,a0,a1,b1,c1 etc):

    What location was the data collected at: CF
 
    Period of time in question
        Begin Date   5/06/96   Time   05:29    (GMT)
        End Date               Time            (GMT)

 Data should be labeled:
 ___  questionable                      ___  All data fields affected
 _X_  incorrect                         _X_  Only some data fields affected
 ___  wrong calibration
 ___  others 
 
 Discussion of Problem:

The surface pressure for this sounding was entered by the operator as 993.3
hPa. The first pressure value reported by the sonde is 964.0 hPa. The surface
pressure at 08:30 was 964.7 and at 11:31 was 954.3.  It appears that the
operator entered the sea-level pressure rather than the station pressure.
The SMOS pressure during the period is in the 960-950 range.

Note that this will affect the altitude calculation throughout the sounding.
 
Other observations/measurements impacted by this problem:

None

Suggested Corrections of the Problem: (e.g. change calibration factor and
recompute, flag data with this comment, etc.)

Flag data.
Measurements:sgpsondewrpnC1.a0:
  • pressure at constant pressure surface(pres)
  • Relative humidity scaled, by total column amount from MWR(rh)
  • north latitude for all the input platforms.(lat)
  • surface wind speed(wspd)
  • Ascent Rate(asc)
  • altitude above sea levelaltunits(alt)
  • Dry-Bulb Temperature(tdry)
  • east longitude for all the input platforms.(lon)
  • Wind Status(wstat)
  • Wind Direction(deg)
  • Surface dew point temperature(dp)
  • Time offset of tweaks from base_time(time_offset)
  • Time offset from base_time(base_time)

sgpsondewrpnC1.a1:
  • east longitude for all the input platforms.(lon)
  • model meridional wind velocity(v_wind)
  • Ascent Rate(asc)
  • Time offset of tweaks from base_time(time_offset)
  • Wind Status(wstat)
  • Relative humidity scaled, by total column amount from MWR(rh)
  • altitude above sea levelaltunits(alt)
  • Wind Direction(deg)
  • pressure at constant pressure surface(pres)
  • Dry-Bulb Temperature(tdry)
  • model zonal wind velocity(u_wind)
  • Time offset from base_time(base_time)
  • Surface dew point temperature(dp)
  • surface wind speed(wspd)
  • north latitude for all the input platforms.(lat)


Back To Table of Contents

DQRID : D960602.2
Start DateStart TimeEnd DateEnd Time
05/29/1996203105/29/19962031
Subject:
bad surface pressure sounding
DataStreams:sgpsondewrpnC1.a0, sgpsondewrpnC1.a1
Description:
DQR No:                               Platform: sgpsondeC1

Subject: Bad surface pressure sounding 05/29/96 20:31

Date Submitted:  6/2/96
Submitted By:                         _X_  Instrument Mentor
                                      ___  EST Member
                                      ___  Science Team Member
                                      ___  Other _____________________________
 
For questions or problems, please contact the ARM Experiment Center at
509-375-6898 or via email at dqr@arm.gov.

Platform/Measurement: sgpsondewrpnC1/all
    What level data: (raw,a0,a1,b1,c1 etc):

    What location was the data collected at:  CF
 
    Period of time in question
        Begin Date  05/29/96   Time   20:31    (GMT)
        End Date               Time            (GMT)

 Data should be labeled:
 ___  questionable                      ___  All data fields affected
 _X_  incorrect                         _X_  Only some data fields affected
 ___  wrong calibration
 ___  others 
 
 Discussion of Problem:

The surface pressure for this sounding was entered by the operator as 999.2
hPa. The first pressure value reported by the sonde is 978.2 hPa. The surface
pressure at 17:25 was 980.1 and at 05:30 (5/30) was 981.8.  It appears that the
operator entered the sea-level pressure rather than the station pressure.

Note that this will affect the altitude calculation throughout the sounding.
 
Other observations/measurements impacted by this problem:

None

Suggested Corrections of the Problem: (e.g. change calibration factor and
recompute, flag data with this comment, etc.)

Flag data.

Data Processing Notes                Date
Measurements:sgpsondewrpnC1.a0:
  • pressure at constant pressure surface(pres)
  • Relative humidity scaled, by total column amount from MWR(rh)
  • north latitude for all the input platforms.(lat)
  • surface wind speed(wspd)
  • Ascent Rate(asc)
  • altitude above sea levelaltunits(alt)
  • Dry-Bulb Temperature(tdry)
  • east longitude for all the input platforms.(lon)
  • Wind Status(wstat)
  • Wind Direction(deg)
  • Surface dew point temperature(dp)
  • Time offset of tweaks from base_time(time_offset)
  • Time offset from base_time(base_time)

sgpsondewrpnC1.a1:
  • east longitude for all the input platforms.(lon)
  • model meridional wind velocity(v_wind)
  • Ascent Rate(asc)
  • Time offset of tweaks from base_time(time_offset)
  • Wind Status(wstat)
  • Relative humidity scaled, by total column amount from MWR(rh)
  • altitude above sea levelaltunits(alt)
  • Wind Direction(deg)
  • pressure at constant pressure surface(pres)
  • Dry-Bulb Temperature(tdry)
  • model zonal wind velocity(u_wind)
  • Time offset from base_time(base_time)
  • Surface dew point temperature(dp)
  • surface wind speed(wspd)
  • north latitude for all the input platforms.(lat)


Back To Table of Contents

DQRID : D960611.3
Start DateStart TimeEnd DateEnd Time
06/10/1996173006/10/19961730
Subject:
bad surface values sounding
DataStreams:sgpsondewrpnC1.a0, sgpsondewrpnC1.a1
Description:
DQR No:                               Platform: sgpsondeC1

Subject: Bad surface values sounding 06/10/96 17:30

Date Submitted:  6/11/96
Submitted By:    Barry Lesht          _X_  Instrument Mentor
                 David Glahn          ___  EST Member
                                      ___  Science Team Member
                                      _X_  Other _Site Ops__________
 
For questions or problems, please contact the ARM Experiment Center at
509-375-6898 or via email at dqr@arm.gov.

Platform/Measurement: sgpsondewrpnC1/all
    What level data: (raw,a0,a1,b1,c1 etc):

    What location was the data collected at:  CF
 
    Period of time in question
        Begin Date  06/10/96   Time   17:30    (GMT)
        End Date               Time            (GMT)

 Data should be labeled:
 ___  questionable                      ___  All data fields affected
 _X_  incorrect                         _X_  Only some data fields affected
 ___  wrong calibration
 ___  others 
 
 Discussion of Problem:

The site operator inadvertently entered incorrect surface met values for
the subject sounding.  Although he caught the error soon after launch
and reported it immediately, it was too late to correct.  The following
table shows the incorrect (present in the file) and correct values.

                      Incorrect           Correct
Pressure               1000.0              973.9
Temperature              35.0               30.5
Relative Humidity        27                 30

The incorrect values of surface temperature and relative humidity will not
affect the other values in the sounding.  The incorrect surface pressure
will, however, affect the altitude calculation throughout the sounding.
 
Other observations/measurements impacted by this problem:

None

Suggested Corrections of the Problem: (e.g. change calibration factor and
recompute, flag data with this comment, etc.)

Flag data.
Measurements:sgpsondewrpnC1.a0:
  • pressure at constant pressure surface(pres)
  • Relative humidity scaled, by total column amount from MWR(rh)
  • north latitude for all the input platforms.(lat)
  • surface wind speed(wspd)
  • Ascent Rate(asc)
  • altitude above sea levelaltunits(alt)
  • Dry-Bulb Temperature(tdry)
  • east longitude for all the input platforms.(lon)
  • Wind Status(wstat)
  • Wind Direction(deg)
  • Surface dew point temperature(dp)
  • Time offset of tweaks from base_time(time_offset)
  • Time offset from base_time(base_time)

sgpsondewrpnC1.a1:
  • east longitude for all the input platforms.(lon)
  • model meridional wind velocity(v_wind)
  • Ascent Rate(asc)
  • Time offset of tweaks from base_time(time_offset)
  • Wind Status(wstat)
  • Relative humidity scaled, by total column amount from MWR(rh)
  • altitude above sea levelaltunits(alt)
  • Wind Direction(deg)
  • pressure at constant pressure surface(pres)
  • Dry-Bulb Temperature(tdry)
  • model zonal wind velocity(u_wind)
  • Time offset from base_time(base_time)
  • Surface dew point temperature(dp)
  • surface wind speed(wspd)
  • north latitude for all the input platforms.(lat)


Back To Table of Contents

DQRID : D960701.4
Start DateStart TimeEnd DateEnd Time
07/01/1996113007/01/19961130
Subject:
Bad surface pressure sounding
DataStreams:sgpsondewrpnC1.a0, sgpsondewrpnC1.a1
Description:
DQR No:                               Platform: sgpsondeC1

Subject: Bad surface pressure sounding 06/21/96 11:30

Date Submitted:  7/1/96
Submitted By:                         _X_  Instrument Mentor
                                      ___  EST Member
                                      ___  Science Team Member
                                      ___  Other _____________________________
 
For questions or problems, please contact the ARM Experiment Center at
509-375-6898 or via email at dqr@arm.gov.

Platform/Measurement: sgpsondewrpnC1/all
    What level data: (raw,a0,a1,b1,c1 etc):

    What location was the data collected at:  CF
 
    Period of time in question
       Begin Date  07/01/96   Time   11:30    (GMT)
       End Date               Time            (GMT)

 Data should be labeled:
 ___  questionable                      ___  All data fields affected
 _X_  incorrect                         _X_  Only some data fields affected
 ___  wrong calibration
 ___  others 
 
 Discussion of Problem:

The surface pressure for this sounding was entered by the operator as 996.4
hPa. The first pressure value reported by the sonde is 972.3 hPa. The surface
pressure at 05:30 was 972.3 and at 14:46 was 976.1.  It appears that the
operator entered the sea-level pressure rather than the station pressure.

Note that this will affect the altitude calculation throughout the sounding.
 
Other observations/measurements impacted by this problem:

None

Suggested Corrections of the Problem: (e.g. change calibration factor and
recompute, flag data with this comment, etc.)

Flag data.
Measurements:sgpsondewrpnC1.a0:
  • pressure at constant pressure surface(pres)
  • Relative humidity scaled, by total column amount from MWR(rh)
  • north latitude for all the input platforms.(lat)
  • surface wind speed(wspd)
  • Ascent Rate(asc)
  • altitude above sea levelaltunits(alt)
  • Dry-Bulb Temperature(tdry)
  • east longitude for all the input platforms.(lon)
  • Wind Status(wstat)
  • Wind Direction(deg)
  • Surface dew point temperature(dp)
  • Time offset of tweaks from base_time(time_offset)
  • Time offset from base_time(base_time)

sgpsondewrpnC1.a1:
  • east longitude for all the input platforms.(lon)
  • model meridional wind velocity(v_wind)
  • Ascent Rate(asc)
  • Time offset of tweaks from base_time(time_offset)
  • Wind Status(wstat)
  • Relative humidity scaled, by total column amount from MWR(rh)
  • altitude above sea levelaltunits(alt)
  • Wind Direction(deg)
  • pressure at constant pressure surface(pres)
  • Dry-Bulb Temperature(tdry)
  • model zonal wind velocity(u_wind)
  • Time offset from base_time(base_time)
  • Surface dew point temperature(dp)
  • surface wind speed(wspd)
  • north latitude for all the input platforms.(lat)


Back To Table of Contents

DQRID : D960706.1
Start DateStart TimeEnd DateEnd Time
07/04/1996172807/04/19961728
Subject:
Bad surface pressure sounding
DataStreams:sgpsondewrpnC1.a0, sgpsondewrpnC1.a1
Description:
DQR No:                               Platform: sgpsondeC1

Subject: Bad surface pressure sounding 07/04/96 17:28

Date Submitted:  7/6/96
Submitted By:                         _X_  Instrument Mentor
                                      ___  EST Member
                                      ___  Science Team Member
                                      ___  Other _____________________________
 
For questions or problems, please contact the ARM Experiment Center at
509-375-6898 or via email at dqr@arm.gov.

Platform/Measurement: sgpsondewrpnC1/all
	What level data: (raw,a0,a1,b1,c1 etc):

    What location was the data collected at:  CF
 
    Period of time in question
 	Begin Date  07/04/96   Time   17:28    (GMT)
 	End Date               Time            (GMT)

 Data should be labeled:
 ___  questionable                      ___  All data fields affected
 _X_  incorrect                         _X_  Only some data fields affected
 ___  wrong calibration
 ___  others 
 
 Discussion of Problem:

The surface pressure for this sounding was entered by the operator as 995.4
hPa. The first pressure value reported by the sonde is 970.1 hPa. The surface
pressure at 14:30 was 972.3 and at 20:27 was 971.1.  It appears that the
operator entered the sea-level pressure rather than the station pressure.

Note that this will affect the altitude calculation throughout the sounding.
 
Other observations/measurements impacted by this problem:

None

Suggested Corrections of the Problem: (e.g. change calibration factor and
recompute, flag data with this comment, etc.)

Flag data.

Data Processing Notes                Date
Measurements:sgpsondewrpnC1.a0:
  • pressure at constant pressure surface(pres)
  • Relative humidity scaled, by total column amount from MWR(rh)
  • north latitude for all the input platforms.(lat)
  • surface wind speed(wspd)
  • Ascent Rate(asc)
  • altitude above sea levelaltunits(alt)
  • Dry-Bulb Temperature(tdry)
  • east longitude for all the input platforms.(lon)
  • Wind Status(wstat)
  • Wind Direction(deg)
  • Surface dew point temperature(dp)
  • Time offset of tweaks from base_time(time_offset)
  • Time offset from base_time(base_time)

sgpsondewrpnC1.a1:
  • east longitude for all the input platforms.(lon)
  • model meridional wind velocity(v_wind)
  • Ascent Rate(asc)
  • Time offset of tweaks from base_time(time_offset)
  • Wind Status(wstat)
  • Relative humidity scaled, by total column amount from MWR(rh)
  • altitude above sea levelaltunits(alt)
  • Wind Direction(deg)
  • pressure at constant pressure surface(pres)
  • Dry-Bulb Temperature(tdry)
  • model zonal wind velocity(u_wind)
  • Time offset from base_time(base_time)
  • Surface dew point temperature(dp)
  • surface wind speed(wspd)
  • north latitude for all the input platforms.(lat)


Back To Table of Contents

DQRID : D970710.1
Start DateStart TimeEnd DateEnd Time
04/29/1996052704/29/19960527
Subject:
Questionable pressure/altitude data
DataStreams:sgpsondewrpnC1.a1
Description:
Ric Cederwall noticed that the lowest 85 samples of this sounding have
nearly constant values of temperature and relative humidity.  It appears
that the system may have mis-identified the launch start time in a way
that resulted in the system using interpolated values of pressure even
though the sonde was still on the ground.  This may have been caused by
a damaged pressure sensor.  I will examine the absolutely raw data to
try and understand this further, but I think it is reasonable to assume
that the first 85 samples or so are incorrect and representative of
condidtions at the surface and that the pressure sensor was damaged
during this sounding.  I will request the raw data from the archive
today.
Measurements:sgpsondewrpnC1.a1:
  • Wind Status(wstat)
  • east longitude for all the input platforms.(lon)
  • Relative humidity scaled, by total column amount from MWR(rh)
  • model meridional wind velocity(v_wind)
  • Ascent Rate(asc)
  • altitude above sea levelaltunits(alt)
  • Time offset of tweaks from base_time(time_offset)
  • Wind Direction(deg)
  • pressure at constant pressure surface(pres)
  • Dry-Bulb Temperature(tdry)
  • model zonal wind velocity(u_wind)
  • Time offset from base_time(base_time)
  • Surface dew point temperature(dp)
  • surface wind speed(wspd)
  • north latitude for all the input platforms.(lat)


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