Data Quality Reports for Session: 110708 User: troyan Completed: 02/27/2008

TABLE OF CONTENTS

DQR IDSubjectData Streams Affected
D040318.10SGP/SMOS/E13 - 6-month Calibration Checkssgp1440smosE13.b1, sgp1smosE13.b1, sgp30smosE13.b1
D060208.2SGP/SONDE/C1 - Mixed use of RS92-SGP and RS92-KL radiosondessgpsondewnpnC1.b1
D060227.2SGP/SONDE/C1 - Soundings done as part of dual-sonde flightssgpsondewnpnC1.b1
D060321.2SGP/SMOS/E13 - Reprocess: Barometer data a factor of 10 too high.sgp1440smosE13.b1, sgp1smosE13.b1, sgp30smosE13.b1
D060502.1SGP/SMOS/E13 -Reprocess: Wind Speed Values Excessively Highsgp1440smosE13.b1, sgp1smosE13.b1
D060630.1SGP/SONDE/C1 - No Wind/Lat/Lon Data in Sonde FilessgpsondewnpnC1.b1
D060717.2SGP/MWR/C1 - Spikes in ambient temperature readingssgpmwrlosC1.b1, sgpmwrtipC1.a1
D060821.3SGP/MWR/C1 - Missing datasgpmwrlosC1.b1, sgpmwrtipC1.a1
D060928.2SGP/SONDE/C1 - RH values offset due to error in ground checksgpsondewnpnC1.b1
D060928.3SGP/SONDE/C1 - Increased precision for alt, dp, pres, rh, tdrysgpsondewnpnC1.b1
D061201.1SGP/SONDE/C1 - RH Sensor failuresgpsondewnpnC1.b1
D061213.4SGP/MWR/C1 - Instrument testingsgpmwrC1.00, sgpmwrlosC1.b1, sgpmwrtipC1.a1
D070314.2SGP/MWR/C1/E14 - Freezing rain-Incorrect rain flagsgpmwrlosC1.b1, sgpmwrlosE14.b1, sgpmwrtipC1.a1, sgpmwrtipE14.a1
D070618.2SGP/SMOS/E13 - RH sensor failuresgp1440smosE13.b1, sgp1smosE13.b1, sgp30smosE13.b1
D070802.3SGP/MWR/C1 - Noisy datasgpmwrlosC1.b1, sgpmwrtipC1.a1
D071128.2SGP/MWR/C1 - Reprocess: Radiometer reinstalled- Please reprocesssgp5mwravgC1.c1, sgpmwrlosC1.b1, sgpmwrtipC1.a1
D080103.2SGP/MWR/C1 - Missing datasgpmwrlosC1.b1
D080116.13SGP/SMOS/E13 - Wind Data Incorrect Due to Icingsgp1440smosE13.b1, sgp1smosE13.b1, sgp30smosE13.b1


DQRID : D040318.10
Start DateStart TimeEnd DateEnd Time
10/16/2003182710/16/20031855
04/15/2004195804/15/20042020
10/28/2004183510/28/20041855
04/15/2005143504/15/20051455
11/23/2005194011/23/20051953
05/01/2006143805/01/20061545
10/13/2006160510/13/20061635
04/16/2007141404/16/20071441
10/09/2007195510/09/20072025
Subject:
SGP/SMOS/E13 - 6-month Calibration Checks
DataStreams:sgp1440smosE13.b1, sgp1smosE13.b1, sgp30smosE13.b1
Description:
During the time periods specified, the SMOS.E13 tower was lowered for 6-month Calibration 
Checks.  During these times wind data are incorrect and temperature and humidity data may 
be incorrect.

Note, exact times when tower was down or maintenance was being performed is sometimes 
unknown.  Users should use the remaining data from these days with caution.

Calibration results are available from the OMIS database at 
    
http://www.ops.sgp.arm.gov:591/smos6cal/default.htm 
To view all 6-month calibration reports leave the date time entry blank.
Measurements:sgp1440smosE13.b1:
  • maximum wind speed (gusts)(max_wspd)
  • Time of Maximum Vapor Pressure(time_max_vap_pres)
  • Time of Maximum Barometric Pressure(time_max_bar_pres)
  • Minimum of Wind speed(min_wspd)
  • Time of Minimum Vapor Pressure(time_min_vap_pres)
  • Maximum Relative Humidity(max_rh)
  • Minimum Temperature(min_temp)
  • Time of Minimum Temperature(time_min_temp)
  • Time of Minimum Relative Humidity(time_min_rh)
  • Minimum Barometric Pressure(min_bar_pres)
  • Maximum Vapor Pressure(max_vap_pres)
  • Time of Maximum Temperature(time_max_temp)
  • Time of Maximum Relative Humidity(time_max_rh)
  • Time of Minimum Wind Speed(time_min_wspd)
  • Minimum Relative Humidity(min_rh)
  • Time of Maximum Wind Speed(time_max_wspd)
  • Maximum Temperature(max_temp)
  • Minimum Vapor Pressure(min_vap_pres)
  • Maximum Barometric Pressure(max_bar_pres)
  • Time of Minimum Barometric Pressure(time_min_bar_pres)
sgp30smosE13.b1:
  • Wind Speed (vector averaged)(wspd_va)
  • Standard Deviation of Barometric Pressure(sd_bar_pres)
  • Vapor Pressure (kiloPascals)(vap_pres)
  • Relative humidity inside the instrument enclosure(rh)
  • Standard Deviation of Wind Speed(sd_wspd)
  • Mean Wind Speed(wspd)
  • Unit Vector Wind Direction(wdir)
  • Standard Deviation of Air Temperature(sd_temp)
  • Standard Deviation of Relative Humidity(sd_rh)
  • Standard Deviation of Vapor Pressure(sd_vap_pres)
  • Barometric pressure(bar_pres)
  • Standard Deviation of wind direction(sd_deg)
  • Beam 0 Temperature(temp)
sgp1smosE13.b1:
  • Barometric pressure(bar_pres)
  • Relative humidity inside the instrument enclosure(rh)
  • Standard Deviation of wind direction(sd_deg)
  • Wind Speed (vector averaged)(wspd_va)
  • Unit Vector Wind Direction(wdir)
  • Mean Wind Speed(wspd)
  • Vapor Pressure (kiloPascals)(vap_pres)
  • Beam 0 Temperature(temp)

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DQRID : D060208.2
Start DateStart TimeEnd DateEnd Time
02/10/2006000012/31/20062359
Subject:
SGP/SONDE/C1 - Mixed use of RS92-SGP and RS92-KL radiosondes
DataStreams:sgpsondewnpnC1.b1
Description:
Because of a manufacturer's production problem, we will be using both RS92-SGP (GPS 
windfinding and RS92-KL (Loran windfinding) radiosondes at the SGP/CF starting February 10, 
2006.  The radiosonde type used for the each sounding may be determined by looking the 
metadata variable "launch_status" in the netCDF data files.
Measurements:sgpsondewnpnC1.b1:
  • lon(lon)
  • U-component(u_wind)
  • Mean Wind Speed(wspd)
  • V-component(v_wind)
  • lat(lat)
  • Wind Direction(deg)
  • Wind Status(wstat)

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DQRID : D060227.2
Start DateStart TimeEnd DateEnd Time
02/22/2006000002/27/20060000
Subject:
SGP/SONDE/C1 - Soundings done as part of dual-sonde flights
DataStreams:sgpsondewnpnC1.b1
Description:
The following soundings done during the subject time period were flown in dual-sonde mode 
in which the standard ARM RS92 radiosonde was attached to the same balloon with a NASA 
ATR (atmospheric temperature reference) radiosonde.  The radiosondes were separated by a 6' 
styrofoam bar.  To accommodate the additional weight, we used 1200g balloons rather than 
350g balloons.  Accordingly, we want to alert users that these soundings may reach 
higher altitudes than normal for ARM soundings and that the ascent rate may be somewhat 
higher.  The following soundings are affected:

Sequence  Date    UTC launch time
    1     2/22        0530
    2     2/22        1730
    3     2/22        2330 <---- No data: launch failure    
    4     2/23        0230
    5     2/23        0530
    6     2/23        1730    
    7     2/23        2030
    8     2/23        2330
    9     2/24        2330
   10     2/25        0215
   11     2/25        0509    
   12     2/25        1730
   13     2/25        1930
   14     2/25        2300
Measurements:sgpsondewnpnC1.b1:
  • Surface dew point temperature(dp)
  • base time(base_time)
  • Mean Wind Speed(wspd)
  • U-component(u_wind)
  • Relative humidity inside the instrument enclosure(rh)
  • lat(lat)
  • Ascent Rate(asc)
  • Retrieved pressure profile(pres)
  • Wind Direction(deg)
  • Wind Status(wstat)
  • lon(lon)
  • Dry bulb temperature(tdry)
  • Time offset of tweaks from base_time(time_offset)
  • V-component(v_wind)
  • Dummy altitude for Zeb(alt)

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DQRID : D060321.2
Start DateStart TimeEnd DateEnd Time
03/02/2006180603/17/20061706
Subject:
SGP/SMOS/E13 - Reprocess: Barometer data a factor of 10 too high.
DataStreams:sgp1440smosE13.b1, sgp1smosE13.b1, sgp30smosE13.b1
Description:
The program was modified and an incorrect multiplier was used so that the barometer data 
was reported in hPa instead of kPa.
Measurements:sgp1440smosE13.b1:
  • Minimum Barometric Pressure(min_bar_pres)
  • Maximum Barometric Pressure(max_bar_pres)
sgp30smosE13.b1:
  • Barometric pressure(bar_pres)
  • Standard Deviation of Barometric Pressure(sd_bar_pres)
sgp1smosE13.b1:
  • Barometric pressure(bar_pres)

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DQRID : D060502.1
Start DateStart TimeEnd DateEnd Time
05/01/2006154505/11/20061825
Subject:
SGP/SMOS/E13 -Reprocess:  Wind Speed Values Excessively High
DataStreams:sgp1440smosE13.b1, sgp1smosE13.b1
Description:
The slope value to convert the rotation of the propeller from engineering units to 
meters/second was incorrectly given as .098 when it should have been .0049.  Conversion was 
converting hertz to meters/second when it should have been converting rpm's to meters/second.
Measurements:sgp1440smosE13.b1:
  • maximum wind speed (gusts)(max_wspd)
  • Minimum of Wind speed(min_wspd)
sgp1smosE13.b1:
  • Mean Wind Speed(wspd)

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DQRID : D060630.1
Start DateStart TimeEnd DateEnd Time
06/17/2006000006/21/20062359
Subject:
SGP/SONDE/C1 - No Wind/Lat/Lon Data in Sonde Files
DataStreams:sgpsondewnpnC1.b1
Description:
The wind finding hardware failed so that no wind or latitude/longitude data was collected 
on the launches for these days.
Measurements:sgpsondewnpnC1.b1:
  • lon(lon)
  • U-component(u_wind)
  • Mean Wind Speed(wspd)
  • V-component(v_wind)
  • lat(lat)
  • Wind Status(wstat)

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DQRID : D060717.2
Start DateStart TimeEnd DateEnd Time
07/13/2006120007/28/20061600
Subject:
SGP/MWR/C1 - Spikes in ambient temperature readings
DataStreams:sgpmwrlosC1.b1, sgpmwrtipC1.a1
Description:
There are intermittent spikes in the Tkair temperature (T ~ 400 K). On 7/28 the sensor 
was cleaned and the instrument power cycled following a power outage. Readings came back to 
normal.
Measurements:sgpmwrtipC1.a1:
  • Ambient temperature(tkair)
sgpmwrlosC1.b1:
  • Ambient temperature(tkair)

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DQRID : D060821.3
Start DateStart TimeEnd DateEnd Time
07/01/2006230007/03/20061400
Subject:
SGP/MWR/C1 - Missing data
DataStreams:sgpmwrlosC1.b1, sgpmwrtipC1.a1
Description:
Data are missing because of a SW problem
Measurements:sgpmwrtipC1.a1:
  • 31.4 GHz blac2body+noise injection signal(bbn31)
  • 31.4 GHz blackbody(bb31)
  • Noise injection temp at 23.8 GHz adjusted to tkbb(tnd23)
  • (tknd)
  • Water on Teflon window (1=WET, 0=DRY)(wet_window)
  • Total liquid water along zenith path using tip-derived brightness temperatures(liqtip)
  • Noise injection temp at 31.4 GHz adjusted to tkbb(tnd31)
  • Actual elevation angle(actel)
  • Blackbody kinetic temperature(tkbb)
  • 23.8 GHz Blackbody signal(bb23)
  • Temperature correction coefficient at 23.8 GHz(tc23)
  • lat(lat)
  • Ambient temperature(tkair)
  • Mixer kinetic (physical) temperature(tkxc)
  • 23.8 GHz blackbody+noise injection signal(bbn23)
  • Dummy altitude for Zeb(alt)
  • Noise injection temp at 23.8 GHz derived from this tip(tnd23I)
  • 31.4 GHz sky signal(tipsky31)
  • Noise injection temp at 31.4 GHz derived from this tip(tnd31I)
  • Temperature correction coefficient at 31.4 GHz(tc31)
  • Actual Azimuth(actaz)
  • base time(base_time)
  • Noise injection temp at nominal temperature at 31.4 GHz(tnd_nom31)
  • lon(lon)
  • 23.8 GHz sky signal(tipsky23)
  • Time offset of tweaks from base_time(time_offset)
  • Total water vapor along zenith path using tip-derived brightness temperatures(vaptip)
  • Noise injection temp at nominal temperature at 23.8 GHz(tnd_nom23)
  • 31.4 GHz sky brightness temperature derived from tip curve(tbsky31tip)
  • 31.4 GHz goodness-of-fit coefficient(r31)
  • 23.8 GHz sky brightness temperature derived from tip curve(tbsky23tip)
  • 23.8 GHz goodness-of-fit coefficient(r23)
sgpmwrlosC1.b1:
  • 31.4 GHz sky signal(sky31)
  • Water on Teflon window (1=WET, 0=DRY)(wet_window)
  • Dummy altitude for Zeb(alt)
  • 31.4 GHz blac2body+noise injection signal(bbn31)
  • Noise injection temp at nominal temperature at 31.4 GHz(tnd_nom31)
  • 23.8 GHz sky signal(sky23)
  • Sky brightness temperature at 31.4 GHz(tbsky31)
  • lon(lon)
  • Noise injection temp at 31.4 GHz adjusted to tkbb(tnd31)
  • Averaged total liquid water along LOS path(liq)
  • 31.4 GHz blackbody(bb31)
  • Noise injection temp at nominal temperature at 23.8 GHz(tnd_nom23)
  • Temperature correction coefficient at 31.4 GHz(tc31)
  • Blackbody kinetic temperature(tkbb)
  • Sky Infra-Red Temperature(sky_ir_temp)
  • MWR column precipitable water vapor(vap)
  • Ambient temperature(tkair)
  • 23.8 GHz Blackbody signal(bb23)
  • Sky brightness temperature at 23.8 GHz(tbsky23)
  • Mixer kinetic (physical) temperature(tkxc)
  • Time offset of tweaks from base_time(time_offset)
  • base time(base_time)
  • (tknd)
  • Noise injection temp at 23.8 GHz adjusted to tkbb(tnd23)
  • 23.8 GHz blackbody+noise injection signal(bbn23)
  • Temperature correction coefficient at 23.8 GHz(tc23)
  • lat(lat)

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DQRID : D060928.2
Start DateStart TimeEnd DateEnd Time
08/27/2006233209/25/20061600
Subject:
SGP/SONDE/C1 - RH values offset due to error in ground check
DataStreams:sgpsondewnpnC1.b1
Description:
Background: After installation of the latest software update , we began performing formal 
ground checks on RS92 radiosondes.  By comparing the
radiosonde readings with reference values in a controlled environment, the
ground check is intended to ensure that the radiosonde sensors are in
calibration before launch.  The radisonde values during the ground check
process are recorded automatically; the reference values are entered by the
operator.  If the radiosonde readings vary from the reference values, the
system 'corrects' the radiosonde values.  In the case of RH, the correction
is applied as an offset (true RH = indicated RH + correction).

Problem: Some operators misunderstood the ground-check procedure and entered the 
radiosonde values of RH rather than the reference value (assumed 0%RH), thus, some soundings done 
during this period have RH values that are different from what they would be if the 
ground check procedure had been done correctly.

Consequence:  Because the RH corrections generally are small (averaging
about 0.5% RH) and the precision of the reported RH data during this time
period is 1% RH, some values will not be affected at all; others will be off by about 1% 
RH (still within the stated accuracy of the sensor). 
Furthermore, because entering the radiosonde value as the reference value
results in a near zero 'correction,' one may view these soundings as being
done without the ground check correction.  Also note that the dew point
value will be suspect as well.

I am attaching below a listing of the soundings that were affected during the indicated 
time period.  Users can see the magnitude of the problem and choose whether or not to apply 
an offset in RH.  Note that application of the offset to the processed RH data (in the 
netCDF file) will not have the same effect of applying the correction to the absolutely 
raw data (before processing), but the differences should be insignificant.  Also note that 
the corrections for each sounding are included in the netCDF header information.  These 
attributes are named 'humidity_correction' and 'humidity_correction_2'.  The values of RH 
indicated by the radiosonde while it is in the ground check set are in attributes 
'humidity_gc_sonde' and 'humidity_gc_sonde_2.'  There is an RH reading for each of the two RH 
sensors used in the RS92 radiosonde.

Here is the list - RH1 and RH2 are the radiosonde readings in the ground
check set.  Ref is the reference value entered by the operator.  The
correcte reference value should be 0%.  To obtain an approximation to the RH value that 
would have been recorded if the ground check had been done
properly, subtract the Ref value from the indicated RH.

 YYYYMMDD  HHMM  SerialN      RH1     RH2     Ref
 20060827  2332  B2624322    1.00    1.00    1.00
 20060828  1731  B2634078    1.00    1.00    1.00
 20060828  2332  B2624380    3.00    3.00    2.00
 20060909  2331  B2615266    1.00    1.00    1.00
 20060915  1759  B2914012    1.00    1.00    1.00
 20060919  2350  B2825128    1.00    1.00    1.00
 20060920  1800  B2825088    1.00    1.00    1.00
 20060920  2346  B2815633    1.00    1.00    1.00
 20060921  1728  B2834732    1.30    1.30    1.30
 20060921  2330  B2825042    1.50    1.50    1.50
 20060922  0527  B2825043    1.70    1.80    1.70
 20060922  1128  B2825031    1.60    1.50    1.60
 20060922  1729  B2834437    1.50    1.50    1.50
 20060922  2330  B2825040    0.40    0.50    0.50
 20060923  0529  B2834733    0.30    0.30    0.30
 20060923  1128  B2825026    0.40    0.40    0.40
 20060923  1729  B2825064    0.60    0.70    0.60
 20060923  2330  B2825041    0.40    0.50    0.50
 20060924  0529  B2825039    0.30    0.30    0.30
 20060924  1729  B2825025    0.20    0.30    0.20
 20060924  2329  B2825032    0.30    0.40    0.40
 20060925  0529  B2824234    0.20    0.30    0.20
Measurements:sgpsondewnpnC1.b1:
  • Surface dew point temperature(dp)
  • Relative humidity inside the instrument enclosure(rh)

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DQRID : D060928.3
Start DateStart TimeEnd DateEnd Time
09/28/2006172812/31/99992359
Subject:
SGP/SONDE/C1 - Increased precision for alt, dp, pres, rh, tdry
DataStreams:sgpsondewnpnC1.b1
Description:
The output precision of the following variables was increased 20060928

alt  changed from 1m to 0.1m
dp   changed from 0.1degC to 0.01degC
pres changed from 0.1 hPa to 0.01 hPa
RH   changed from 1%RH to 0.01%RH
tdry changed from .1degC to 0.01degC

Note that the increase in precision does not necessarily imply an increase in accuracy.  
Users are cautioned to continue to use their best scientific judgement when using these or 
any other data.
Measurements:sgpsondewnpnC1.b1:
  • Surface dew point temperature(dp)
  • Dry bulb temperature(tdry)
  • Relative humidity inside the instrument enclosure(rh)
  • Retrieved pressure profile(pres)
  • Dummy altitude for Zeb(alt)

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DQRID : D061201.1
Start DateStart TimeEnd DateEnd Time
11/27/2006233111/28/20060056
Subject:
SGP/SONDE/C1 - RH Sensor failure
DataStreams:sgpsondewnpnC1.b1
Description:
The differences between the two RH sensors on this sonde are unreasonably high (~20%).  As 
a result the reported RH values oscillate by this amount during the times the sensors 
are alternately heated.  After the heating stops, the reported RH comes from the sensor 
reading the higher value.  There is no way of knowing if this is the correct value.
Measurements:sgpsondewnpnC1.b1:
  • Surface dew point temperature(dp)
  • Relative humidity inside the instrument enclosure(rh)

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DQRID : D061213.4
Start DateStart TimeEnd DateEnd Time
11/28/2006210012/01/20061900
Subject:
SGP/MWR/C1 - Instrument testing
DataStreams:sgpmwrC1.00, sgpmwrlosC1.b1, sgpmwrtipC1.a1
Description:
On 11/28 the insrument was removed and taken inside for testing
Measurements:sgpmwrtipC1.a1:
  • 31.4 GHz blac2body+noise injection signal(bbn31)
  • 31.4 GHz blackbody(bb31)
  • Noise injection temp at 23.8 GHz adjusted to tkbb(tnd23)
  • (tknd)
  • Water on Teflon window (1=WET, 0=DRY)(wet_window)
  • Total liquid water along zenith path using tip-derived brightness temperatures(liqtip)
  • Noise injection temp at 31.4 GHz adjusted to tkbb(tnd31)
  • Actual elevation angle(actel)
  • Blackbody kinetic temperature(tkbb)
  • 23.8 GHz Blackbody signal(bb23)
  • Temperature correction coefficient at 23.8 GHz(tc23)
  • lat(lat)
  • Ambient temperature(tkair)
  • Mixer kinetic (physical) temperature(tkxc)
  • 23.8 GHz blackbody+noise injection signal(bbn23)
  • Dummy altitude for Zeb(alt)
  • Noise injection temp at 23.8 GHz derived from this tip(tnd23I)
  • 31.4 GHz sky signal(tipsky31)
  • Noise injection temp at 31.4 GHz derived from this tip(tnd31I)
  • Temperature correction coefficient at 31.4 GHz(tc31)
  • Actual Azimuth(actaz)
  • base time(base_time)
  • Noise injection temp at nominal temperature at 31.4 GHz(tnd_nom31)
  • lon(lon)
  • 23.8 GHz sky signal(tipsky23)
  • Time offset of tweaks from base_time(time_offset)
  • Total water vapor along zenith path using tip-derived brightness temperatures(vaptip)
  • Noise injection temp at nominal temperature at 23.8 GHz(tnd_nom23)
  • 31.4 GHz sky brightness temperature derived from tip curve(tbsky31tip)
  • 31.4 GHz goodness-of-fit coefficient(r31)
  • 23.8 GHz sky brightness temperature derived from tip curve(tbsky23tip)
  • 23.8 GHz goodness-of-fit coefficient(r23)
sgpmwrlosC1.b1:
  • 31.4 GHz sky signal(sky31)
  • Water on Teflon window (1=WET, 0=DRY)(wet_window)
  • Dummy altitude for Zeb(alt)
  • 31.4 GHz blac2body+noise injection signal(bbn31)
  • Noise injection temp at nominal temperature at 31.4 GHz(tnd_nom31)
  • 23.8 GHz sky signal(sky23)
  • Sky brightness temperature at 31.4 GHz(tbsky31)
  • lon(lon)
  • Noise injection temp at 31.4 GHz adjusted to tkbb(tnd31)
  • Averaged total liquid water along LOS path(liq)
  • 31.4 GHz blackbody(bb31)
  • Noise injection temp at nominal temperature at 23.8 GHz(tnd_nom23)
  • Temperature correction coefficient at 31.4 GHz(tc31)
  • Blackbody kinetic temperature(tkbb)
  • Sky Infra-Red Temperature(sky_ir_temp)
  • MWR column precipitable water vapor(vap)
  • Ambient temperature(tkair)
  • 23.8 GHz Blackbody signal(bb23)
  • Sky brightness temperature at 23.8 GHz(tbsky23)
  • Mixer kinetic (physical) temperature(tkxc)
  • Time offset of tweaks from base_time(time_offset)
  • base time(base_time)
  • (tknd)
  • Noise injection temp at 23.8 GHz adjusted to tkbb(tnd23)
  • 23.8 GHz blackbody+noise injection signal(bbn23)
  • Temperature correction coefficient at 23.8 GHz(tc23)
  • lat(lat)
sgpmwrC1.00:
  • Raw data stream - documentation not supported(Raw data stream - documentation not supported)

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DQRID : D070314.2
Start DateStart TimeEnd DateEnd Time
01/12/2007000001/15/20070000
Subject:
SGP/MWR/C1/E14 - Freezing rain-Incorrect rain flag
DataStreams:sgpmwrlosC1.b1, sgpmwrlosE14.b1, sgpmwrtipC1.a1, sgpmwrtipE14.a1
Description:
Between 01/12 and 01/15 brightness temperatures show high values (Tb > 100 K) indicative 
of rain, however the wet_window flag is 0 (indicative of no rain). During that time there 
where freezing conditions with ice pellets that were not detected by the sensor. The high 
brightness temperatures may be due to melting ice on the window.
Measurements:sgpmwrtipC1.a1:
  • Water on Teflon window (1=WET, 0=DRY)(wet_window)
sgpmwrlosC1.b1:
  • Water on Teflon window (1=WET, 0=DRY)(wet_window)
sgpmwrtipE14.a1:
  • Water on Teflon window (1=WET, 0=DRY)(wet_window)
sgpmwrlosE14.b1:
  • Water on Teflon window (1=WET, 0=DRY)(wet_window)

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DQRID : D070618.2
Start DateStart TimeEnd DateEnd Time
04/16/2007000006/18/20072000
Subject:
SGP/SMOS/E13 - RH sensor failure
DataStreams:sgp1440smosE13.b1, sgp1smosE13.b1, sgp30smosE13.b1
Description:
The T/RH sensor relative humidity data is suspect during this time.  Values from this 
sensor failed the 6-month check and subsequent bi-weekly checks.  The RH values were lower by 
larger than the manufacturer suggested uncertainty of 3%.
Measurements:sgp1440smosE13.b1:
  • Time of Maximum Relative Humidity(time_max_rh)
  • Time of Maximum Vapor Pressure(time_max_vap_pres)
  • Minimum Relative Humidity(min_rh)
  • Time of Minimum Vapor Pressure(time_min_vap_pres)
  • Maximum Relative Humidity(max_rh)
  • Time of Minimum Relative Humidity(time_min_rh)
  • Maximum Vapor Pressure(max_vap_pres)
  • Minimum Vapor Pressure(min_vap_pres)
sgp30smosE13.b1:
  • Standard Deviation of Relative Humidity(sd_rh)
  • Standard Deviation of Vapor Pressure(sd_vap_pres)
  • Vapor Pressure (kiloPascals)(vap_pres)
  • Relative humidity inside the instrument enclosure(rh)
sgp1smosE13.b1:
  • Relative humidity inside the instrument enclosure(rh)
  • Vapor Pressure (kiloPascals)(vap_pres)

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DQRID : D070802.3
Start DateStart TimeEnd DateEnd Time
07/14/2007000008/03/20071508
Subject:
SGP/MWR/C1 - Noisy data
DataStreams:sgpmwrlosC1.b1, sgpmwrtipC1.a1
Description:
Since 7/14 the MWR is experiencing intermittent periods of increased noise. The cause for 
this is under investigation.
Measurements:sgpmwrtipC1.a1:
  • 31.4 GHz blac2body+noise injection signal(bbn31)
  • 31.4 GHz blackbody(bb31)
  • 23.8 GHz sky signal(tipsky23)
  • 31.4 GHz sky signal(tipsky31)
  • Total liquid water along zenith path using tip-derived brightness temperatures(liqtip)
  • Total water vapor along zenith path using tip-derived brightness temperatures(vaptip)
  • 23.8 GHz blackbody+noise injection signal(bbn23)
  • 31.4 GHz sky brightness temperature derived from tip curve(tbsky31tip)
  • 23.8 GHz sky brightness temperature derived from tip curve(tbsky23tip)
  • 23.8 GHz Blackbody signal(bb23)
sgpmwrlosC1.b1:
  • Sky brightness temperature at 31.4 GHz(tbsky31)
  • 23.8 GHz blackbody+noise injection signal(bbn23)
  • 31.4 GHz sky signal(sky31)
  • Averaged total liquid water along LOS path(liq)
  • 31.4 GHz blackbody(bb31)
  • 31.4 GHz blac2body+noise injection signal(bbn31)
  • MWR column precipitable water vapor(vap)
  • 23.8 GHz Blackbody signal(bb23)
  • Sky brightness temperature at 23.8 GHz(tbsky23)
  • 23.8 GHz sky signal(sky23)

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DQRID : D071128.2
Start DateStart TimeEnd DateEnd Time
11/19/2007213611/22/20071400
Subject:
SGP/MWR/C1 - Reprocess: Radiometer reinstalled- Please reprocess
DataStreams:sgp5mwravgC1.c1, sgpmwrlosC1.b1, sgpmwrtipC1.a1
Description:
After the radiometer was reinstalled it had to update the calibration coefficients.
Data will be reprocessed
Measurements:sgpmwrtipC1.a1:
  • Noise injection temp at 23.8 GHz adjusted to tkbb(tnd23)
  • 31.4 GHz sky signal(tipsky31)
  • Total liquid water along zenith path using tip-derived brightness temperatures(liqtip)
  • Temperature correction coefficient at 31.4 GHz(tc31)
  • Noise injection temp at 31.4 GHz adjusted to tkbb(tnd31)
  • Noise injection temp at nominal temperature at 31.4 GHz(tnd_nom31)
  • 23.8 GHz sky signal(tipsky23)
  • Temperature correction coefficient at 23.8 GHz(tc23)
  • Total water vapor along zenith path using tip-derived brightness temperatures(vaptip)
  • Noise injection temp at nominal temperature at 23.8 GHz(tnd_nom23)
  • 31.4 GHz sky brightness temperature derived from tip curve(tbsky31tip)
  • 23.8 GHz sky brightness temperature derived from tip curve(tbsky23tip)
sgp5mwravgC1.c1:
  • Sky brightness temperature at 23.8 GHz(tbsky23)
  • 23.8 GHz sky brightness temperature(23tbsky)
  • Sky brightness temperature at 31.4 GHz(tbsky31)
  • 31.4 GHz sky brightness temperature(31tbsky)
  • Averaged total liquid water along LOS path(liq)
  • MWR column precipitable water vapor(vap)
sgpmwrlosC1.b1:
  • Noise injection temp at 23.8 GHz adjusted to tkbb(tnd23)
  • Noise injection temp at nominal temperature at 31.4 GHz(tnd_nom31)
  • Sky brightness temperature at 31.4 GHz(tbsky31)
  • Noise injection temp at 31.4 GHz adjusted to tkbb(tnd31)
  • Averaged total liquid water along LOS path(liq)
  • Noise injection temp at nominal temperature at 23.8 GHz(tnd_nom23)
  • Temperature correction coefficient at 31.4 GHz(tc31)
  • MWR column precipitable water vapor(vap)
  • Sky brightness temperature at 23.8 GHz(tbsky23)
  • Temperature correction coefficient at 23.8 GHz(tc23)

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DQRID : D080103.2
Start DateStart TimeEnd DateEnd Time
07/21/1993180907/23/19931541
08/07/1993214308/09/19931308
08/14/1993223308/16/19931300
08/29/1993120708/31/19931206
09/17/1993215809/20/19931311
10/02/1993161210/04/19931338
10/09/1993074110/11/19931319
11/12/1993120711/15/19931413
11/19/1993202711/21/19931957
12/14/1993230003/21/19941759
03/28/1994145903/30/19942225
05/16/1994190005/19/19942018
06/22/1994160007/11/19941859
07/16/1994030007/19/19942006
09/03/1994164709/05/19941341
09/09/1994232509/11/19941543
12/17/1994004912/19/19941441
01/05/1995000001/05/19952359
01/28/1995005401/30/19951443
04/01/1995000004/03/19951610
05/09/1995220005/11/19952350
06/24/1995090306/26/19950159
07/07/1995162507/10/19951409
07/19/1995174107/21/19951906
07/28/1995190007/31/19951918
08/22/1995161608/25/19952359
12/01/1995143401/11/19962214
01/12/1996200001/23/19962030
01/23/1996233202/08/19962359
08/06/1996000008/06/19962359
09/04/1996191009/08/19962359
09/14/1996070009/16/19961759
09/30/1996000009/30/19962359
12/01/1996000012/01/19962359
07/01/1997000007/01/19972359
02/20/1998233902/22/19980042
05/04/1998000005/04/19982359
07/18/1998033707/20/19981355
09/28/1998000009/28/19982359
10/10/1998235910/12/19981959
10/17/1998170510/19/19981535
12/25/1998223312/28/19982026
02/06/1999123502/08/19991652
03/13/1999204803/15/19992040
07/23/1999205907/26/19991408
12/04/1999080012/06/19991821
01/07/2000144602/02/20002224
05/24/2000145505/31/20001505
06/06/2000162006/14/20001451
09/01/2000220009/05/20001526
09/15/2000205709/18/20001339
09/23/2000123609/25/20001430
01/13/2001201101/16/20011647
02/24/2001023002/26/20011508
03/03/2001070103/05/20011546
03/10/2001070203/12/20011535
03/17/2001070203/19/20011422
03/24/2001070303/26/20011516
03/30/2001203804/02/20011423
05/05/2001104205/07/20011514
05/18/2001153405/21/20011451
06/22/2001220006/25/20011438
06/30/2001061607/02/20011435
07/28/2001194407/30/20011357
08/24/2001134808/27/20011751
09/07/2001184209/10/20011439
09/15/2001153309/17/20011459
10/13/2001003310/15/20011526
11/03/2001084011/05/20011613
11/10/2001055811/13/20011518
11/16/2001170111/19/20011706
12/21/2001215312/24/20011442
01/30/2002084502/11/20021632
03/02/2002033903/04/20021533
03/09/2002034003/11/20021621
06/26/2002163906/28/20022057
09/01/2002100209/03/20021332
12/21/2002112412/23/20021510
01/04/2003070301/06/20031529
08/09/2003003708/11/20031456
08/23/2003210108/25/20031456
10/12/2003202510/14/20031414
11/29/2003184012/01/20031502
01/24/2004074301/26/20041505
02/14/2004231602/17/20041520
09/04/2004025009/07/20041419
10/09/2004074510/11/20041739
10/16/2004225010/18/20041355
11/13/2004184911/15/20041521
12/03/2004194012/06/20041454
01/15/2005065201/18/20051446
01/22/2005144901/24/20051444
06/10/2005211806/13/20051603
08/05/2005170108/30/20052001
10/07/2005165811/16/20051945
11/18/2005180111/21/20051521
11/23/2005220111/25/20051550
11/26/2005010111/28/20051543
12/03/2005104312/05/20051559
01/14/2006182201/17/20061512
01/21/2006070801/23/20061515
02/03/2006190302/06/20061533
02/25/2006073002/27/20061420
07/01/2006222507/03/20061413
11/28/2006214312/01/20061911
06/09/2007115006/11/20071300
07/07/2007164207/09/20071304
08/03/2007160111/19/20072135
12/22/2007211212/24/20071504
Subject:
SGP/MWR/C1 - Missing data
DataStreams:sgpmwrlosC1.b1
Description:
Data are missing and unrecoverable.
Measurements:sgpmwrlosC1.b1:
  • 31.4 GHz sky signal(sky31)
  • Water on Teflon window (1=WET, 0=DRY)(wet_window)
  • Dummy altitude for Zeb(alt)
  • (tknd)
  • 31.4 GHz blac2body+noise injection signal(bbn31)
  • Noise injection temp at 23.8 GHz adjusted to tkbb(tnd23)
  • Noise injection temp at nominal temperature at 31.4 GHz(tnd_nom31)
  • 23.8 GHz sky signal(sky23)
  • 23.8 GHz blackbody+noise injection signal(bbn23)
  • Sky brightness temperature at 31.4 GHz(tbsky31)
  • lon(lon)
  • Noise injection temp at 31.4 GHz adjusted to tkbb(tnd31)
  • Averaged total liquid water along LOS path(liq)
  • 31.4 GHz blackbody(bb31)
  • Noise injection temp at nominal temperature at 23.8 GHz(tnd_nom23)
  • Temperature correction coefficient at 31.4 GHz(tc31)
  • Blackbody kinetic temperature(tkbb)
  • Sky Infra-Red Temperature(sky_ir_temp)
  • MWR column precipitable water vapor(vap)
  • Ambient temperature(tkair)
  • 23.8 GHz Blackbody signal(bb23)
  • Sky brightness temperature at 23.8 GHz(tbsky23)
  • Mixer kinetic (physical) temperature(tkxc)
  • Temperature correction coefficient at 23.8 GHz(tc23)
  • lat(lat)
  • Time offset of tweaks from base_time(time_offset)
  • base time(base_time)

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DQRID : D080116.13
Start DateStart TimeEnd DateEnd Time
12/10/2007221212/11/20071945
Subject:
SGP/SMOS/E13 - Wind Data Incorrect Due to Icing
DataStreams:sgp1440smosE13.b1, sgp1smosE13.b1, sgp30smosE13.b1
Description:
An ice storm caused the wind data from the RM Young wind sensor to be
incorrect.  In many instances it was frozen and unmoving, at times it
measured values but those are extremely suspect.
Measurements:sgp1440smosE13.b1:
  • maximum wind speed (gusts)(max_wspd)
  • Time of Minimum Wind Speed(time_min_wspd)
  • Minimum of Wind speed(min_wspd)
  • Time of Maximum Wind Speed(time_max_wspd)
sgp30smosE13.b1:
  • Unit Vector Wind Direction(wdir)
  • Wind Speed (vector averaged)(wspd_va)
  • Standard Deviation of Wind Speed(sd_wspd)
  • Standard Deviation of wind direction(sd_deg)
  • Mean Wind Speed(wspd)
sgp1smosE13.b1:
  • Mean Wind Speed(wspd)
  • Standard Deviation of wind direction(sd_deg)
  • Wind Speed (vector averaged)(wspd_va)
  • Unit Vector Wind Direction(wdir)

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END OF DATA