Data Quality Reports for Session: 138728 User: zhiyu1wang Completed: 11/14/2011


TABLE OF CONTENTS

DQR IDSubjectData Streams Affected
D010201.1NSA/MWR/C1 - Temperature Stabilization of Noise Diode ImpairednsamwrlosC1.a1, nsamwrlosC1.b1, nsa5mwravgC1.c1
D010202.2NSA/MWR/C1 - negative sky brightness temperaturesnsamwrlosC1.a1, nsamwrlosC1.b1
D010202.3NSA/MWR/C1 - negative sky brightness temperaturesnsamwrlosC1.a1, nsamwrlosC1.b1
D010202.5NSA/MWR/C1 - Reprocess: calibration changensamwrlosC1.a1, nsamwrlosC1.b1
D010202.6NSA/MWR/C1 - incorrect flagging of datansamwrlosC1.a1, nsamwrlosC1.b1, nsamwrtipC1.a1
D010202.7NSA/MWR/C1 - incorrect flagging of datansamwrlosC1.a1, nsamwrlosC1.b1, nsamwrtipC1.a1
D010202.8NSA/MWR/C2 - Wet-window flag incorrectly setnsamwrlosC2.b1, nsamwrtipC2.a1
D010308.1NSA/MWR/C2 - Elevated sky brightness temperaturesnsamwrlosC2.b1, nsamwrtipC2.a1
D010504.2NSA/MWR/C2 - Missing datansamwrlosC2.b1, nsamwrtipC2.a1
D010504.4NSA/MWR/C1 - Reprocess: calibration changensamwrlosC1.a1, nsamwrlosC1.b1, nsamwrtipC1.a1
D020122.1NSA/MWR/C1 - Reprocess: wrong calibrationnsamwrlosC1.a1, nsamwrlosC1.b1
D020823.28NSA/MWR/C1 - Contamination or Calibration EffectnsamwrlosC1.a1, nsamwrlosC1.b1
D020823.29NSA/MWR/C1 - FrostingnsamwrlosC1.a1, nsamwrlosC1.b1
D020823.30NSA/MWR/C1 - Instrument maintenancensamwrlosC1.a1, nsamwrlosC1.b1
D020823.32NSA/MWR/C1 - MWR movednsamwrlosC1.a1, nsamwrlosC1.b1
D020823.33NSA/MWR/C1 - negative PWV (bad calibration?)nsamwrlosC1.a1, nsamwrlosC1.b1
D020823.34NSA/MWR/C1 - Heater/blower removednsamwrlosC1.a1, nsamwrlosC1.b1
D020823.36NSA/MWR/C1 - Data spikes, possibly due to cleaning eventsnsamwrlosC1.a1, nsamwrlosC1.b1
D020824.4NSA/MWR/C2 - Instrument MaintenancensamwrlosC2.b1
D021017.1NSA/MWR/C1 - MWR digital board failurensamwrlosC1.a1, nsamwrlosC1.b1
D030312.6SGP/MWR/C1 - Intermittent Negative Sky Brightness TemperaturesnsamwrlosC1.a1, nsamwrlosC1.b1
D030312.7NSA/MWR/C2 - Intermittent Negative Sky Brightness TemperaturesnsamwrlosC2.b1
D030515.3NSA/MWR/C1 - no air temperature signalnsamwrC1.00, nsamwrlosC1.b1, nsamwrtipC1.a1
D030724.1NSA/MWR/C2 - Thermally unstablensamwrlosC2.b1
D030822.7NSA/MWR/C1 - min/max/delta values incorrectnsamwrlosC1.b1
D040102.4NSA/MWR/C2 - Heater problemnsamwrlosC2.b1, nsamwrtipC2.a1
D040116.1NSA/MWR/C1 - damaged windownsamwrlosC1.a1, nsamwrlosC1.b1, nsamwrtipC1.a1, nsaqmemwrcolC1.c1
D050112.1NSA/C1 - Site-wide power failurensamplC1.a1, nsamwrpC1.b1, nsamplpsC1.a0, nsamwrlosC1.b1, nsamwrtipC1.a1, nsaaerich1C1.b1,
nsaaerich2C1.b1, nsammcrmomC1.b1, nsamettwr4hC1.b1, nsavceil25kC1.b1,
nsatwrcam40mC1.a1, nsaaerisummaryC1.b1, nsaaeriengineerC1.b1, nsa915rwptempconC1.a1,
nsa915rwptempmomC1.a0, nsa915rwpwindconC1.a1, nsa915rwpwindmomC1.a0, nsa915rwptempspecC1.a0,
nsa915rwpwindspecC1.a0
D050202.1NSA/MWR/C2 - no air temperature signalnsamwrlosC2.b1, nsamwrtipC2.a1
D050203.1NSA/MWR/C1 - poor air temperature valuesnsamwrlosC1.b1, nsamwrtipC1.a1
D050725.7NSA/MWR/C1 - Reprocess: Revised Calibration CoefficientsnsamwrlosC1.a1, nsamwrlosC1.b1, nsamwrtipC1.a1, nsa5mwravgC1.c1, nsaqmemwrcolC1.c1
D050725.8NSA/MWR/C2 - Reprocessed: Revised Retrieval CoefficientsnsamwrlosC2.b1, nsamwrtipC2.a1
D050809.2NSA/MWR/C1 - Possible loss of accuracy due to missing blowernsamwrlosC1.b1, nsamwrtipC1.a1
D050830.1NSA/MWR/C2 - Thermally unstablensamwrlosC2.b1, nsamwrtipC2.a1
D050920.2NSA/MWR/C1 - Instrument problem, Heater problemnsamwrC1.00, nsamwrlosC1.b1
D050928.3NSA/MWR/C1 - New software version (4.15) installednsamwrlosC1.b1, nsamwrtipC1.a1
D050928.4NSA/MWR/C2 - New software version (4.15) installednsamwrlosC2.b1, nsamwrtipC2.a1
D050930.1NSA/MWR/C1 - Reprocess: wrong calibrationnsamwrlosC1.a1, nsamwrlosC1.b1, nsamwrtipC1.a1
D051020.1NSA/MWR/C1 - Incorrect time stampnsamwrC1.00, nsamwrlosC1.b1
D060223.1NSA/MWR/C2 - Frosting/CondensationnsamwrC2.00, nsamwrlosC2.b1, nsamwrtipC2.a1
D060420.8NSA/MWR/C1 - software upgrade (version 3.28)nsamwrlosC1.a1, nsamwrlosC1.b1
D060717.4NSA/MWR/C1 - TKAIR sensor failurensamwrlosC1.b1
D060818.12NSA/MWR/C2 - Spikes in air temperature readingsnsamwrlosC2.b1
D061114.1NSA/MWR/C1 - Rain sensor always onnsamwrlosC1.b1, nsamwrtipC1.a1
D080512.1NSA/MWR/C1 - Spikes in air temperature readingsnsamwrlosC1.b1, nsamwrtipC1.a1
D080512.2NSA/MWR/C2 - Possible bias on measurementsnsamwrlosC2.b1, nsamwrtipC2.a1
D080623.1NSA/MWR/C1 - Missing surface air temperature datansamwrlosC1.b1, nsamwrtipC1.a1
D080811.1NSA/MWR/C2 - Occasional thermal instabilitynsamwrlosC2.b1, nsamwrtipC2.a1, nsa5mwravgC2.c1
D090114.2NSA/MWR/C1 - Incorrect brightness temperatures and retrievalsnsamwrlosC1.b1, nsamwrtipC1.a1, nsa5mwravgC1.c1
D090417.1NSA/MWR/C1 - RFI screening testnsamwrlosC1.b1, nsamwrtipC1.a1
D090417.5NSA/MWR/C1 - High noise in 23.8-GHz channelnsamwrlosC1.b1, nsamwrtipC1.a1
D090611.1NSA/MWR/C1 - Intermittent air temperature readingsnsamwrlosC1.b1, nsamwrtipC1.a1
D090611.2NSA/MWR/C1 - Air temperature readings missingnsamwrlosC1.b1, nsamwrtipC1.a1
D100224.5NSA/MWR/C2 - Radiometer unstablensamwrlosC2.b1, nsamwrtipC2.a1
D100326.1NSA/MWR/C1 - Elevated noisensamwrlosC1.b1, nsamwrtipC1.a1
D100830.2NSA/MWR/C2 - Temperature instabilitynsamwrlosC2.b1, nsamwrtipC2.a1
D101025.1NSA/MWR/C1 - Missing datansamwrlosC1.b1, nsamwrtipC1.a1
D990106.3NSA/MWR/C1 - Software ChangensamwrlosC1.a1, nsamwrlosC1.b1, nsamwrtipC1.a1
D990114.1NSA/MWR/C1 - Spikes in PWV datansamwrlosC1.a1, nsamwrlosC1.b1
D990114.2NSA/MWR/C1 - Spikes in PWV datansamwrlosC1.a1, nsamwrlosC1.b1
D990114.3NSA/MWR/C1 - Reprocess: incorrect calibrationsnsamwrlosC1.00, nsamwrlosC1.a1, nsamwrlosC1.b1


DQRID : D010201.1
Start DateStart TimeEnd DateEnd Time
01/17/2001060001/22/20012145
Subject:
NSA/MWR/C1 - Temperature Stabilization of Noise Diode Impaired
DataStreams:nsamwrlosC1.a1, nsamwrlosC1.b1, nsa5mwravgC1.c1
Description:
On 1/17 we had a big spike in the data and lost temperature stabilization. The instrument 
had problems maintaining the Noise Diode (ND) temperature since. At ambient temperatures 
under about -20 C the ND was not maintaining the set temperature of 30 C. This problem 
was reported in P010122.1.

Fred Solheim recommended on 1/22 that we powercycle the instrument as it looked like the 
instrument CPU had lost the temperature reference.

So we powercycled the instrument on 1/22 @ 20:30 and lost all comumnication to it; after a 
second powercycling the instrument came back on line and the temperature stabilized 
quickly (within a couple of minutes) to the set temperature (30 C)

Fred Solheim reported after the system was restored:
"I've never seen this behavior before. I don't think it was due to the RF deck physically 
hanging temperature, because the recorded temp dropped about 30 C in one observation 
cycle. If this happens again, send the MWR down along with data files for us to look at."

Data collected in the periode 1/17/2001 6:00 to 1/22/2001 21:45 are questionable since it 
is uncertain whether the temperature really was unstable and what really caused the 
problem.
Measurements:nsa5mwravgC1.c1:
  • tbsky31_sdev
  • tbsky23_sdev
  • Total liquid water along LOS path(liq)
  • ir_temp_sdev
  • num_obs_irt
  • liq_sdev
  • num_obs
  • Radiation, longwave, brightness temperature, 23.8 GHz(tbsky23)
  • Temperature, brightness, longwave(ir_temp)
  • Total water vapor along LOS path(vap)
  • water_flag_fraction
  • vap_sdev
  • 31.4 GHz sky brightness temperature(tbsky31)

nsamwrlosC1.a1:
  • bb31
  • tnd_nom23
  • 31.4 GHz sky brightness temperature(tbsky31)
  • tnd23
  • Total liquid water along LOS path(liq)
  • Total water vapor along LOS path(vap)
  • bbn31
  • tkair
  • tkxc
  • sky23
  • bb23
  • tkbb
  • sky31
  • tnd31
  • tc23
  • tnd_nom31
  • Temperature, brightness, longwave(ir_temp)
  • Radiation, longwave, brightness temperature, 23.8 GHz(tbsky23)
  • tc31
  • bbn23
  • tknd
  • wet_window

nsamwrlosC1.b1:
  • 31.4 GHz sky brightness temperature(tbsky31)
  • Total water vapor along LOS path(vap)
  • wet_window
  • Total liquid water along LOS path(liq)
  • Radiation, longwave, brightness temperature, 23.8 GHz(tbsky23)
  • Temperature, brightness, longwave(ir_temp)


Back To Table of Contents

DQRID : D010202.2
Start DateStart TimeEnd DateEnd Time
02/03/2000000005/24/20001800
Subject:
NSA/MWR/C1 - negative sky brightness temperatures
DataStreams:nsamwrlosC1.a1, nsamwrlosC1.b1
Description:
The data exhibit occasional negative sky brightness temperatures.
The problem was corrected when the site operator cleaned the cable connectors and coated 
the terminals with dielectric grease.
Measurements:nsamwrlosC1.a1:
  • 31.4 GHz sky brightness temperature(tbsky31)
  • tkxc
  • Total liquid water along LOS path(liq)
  • Total water vapor along LOS path(vap)
  • Radiation, longwave, brightness temperature, 23.8 GHz(tbsky23)

nsamwrlosC1.b1:
  • 31.4 GHz sky brightness temperature(tbsky31)
  • Total water vapor along LOS path(vap)
  • Total liquid water along LOS path(liq)
  • Radiation, longwave, brightness temperature, 23.8 GHz(tbsky23)


Back To Table of Contents

DQRID : D010202.3
Start DateStart TimeEnd DateEnd Time
10/10/2000000012/21/20002359
Subject:
NSA/MWR/C1 - negative sky brightness temperatures
DataStreams:nsamwrlosC1.a1, nsamwrlosC1.b1
Description:
The data exhibit occasional negative sky brightness temperatures.
The problem was corrected when the computer was reconfigured following a virus infection.
Measurements:nsamwrlosC1.a1:
  • 31.4 GHz sky brightness temperature(tbsky31)
  • tkxc
  • Total liquid water along LOS path(liq)
  • Total water vapor along LOS path(vap)
  • Radiation, longwave, brightness temperature, 23.8 GHz(tbsky23)

nsamwrlosC1.b1:
  • 31.4 GHz sky brightness temperature(tbsky31)
  • Total water vapor along LOS path(vap)
  • Total liquid water along LOS path(liq)
  • Radiation, longwave, brightness temperature, 23.8 GHz(tbsky23)


Back To Table of Contents

DQRID : D010202.5
Start DateStart TimeEnd DateEnd Time
11/22/2000233011/24/20001400
Subject:
NSA/MWR/C1 - Reprocess: calibration change
DataStreams:nsamwrlosC1.a1, nsamwrlosC1.b1
Description:
The thicker (1/2-inch) insulation was installed on the RF deck and the reference 
temperature was reduced from 50 C to 30 C to prevent thermal instability in winter. A change in 
the mixer temperature affects the instrument's calibration. A new calibration was 
automatically derived and applied after 1500 valid tip curves were acquired. During the period 
after the temperature was reset and before the calibration was updated, the previous 
calibration was used.
Measurements:nsamwrlosC1.a1:
  • 31.4 GHz sky brightness temperature(tbsky31)
  • Total liquid water along LOS path(liq)
  • Total water vapor along LOS path(vap)
  • Radiation, longwave, brightness temperature, 23.8 GHz(tbsky23)

nsamwrlosC1.b1:
  • 31.4 GHz sky brightness temperature(tbsky31)
  • Total water vapor along LOS path(vap)
  • Total liquid water along LOS path(liq)
  • Radiation, longwave, brightness temperature, 23.8 GHz(tbsky23)


Back To Table of Contents

DQRID : D010202.6
Start DateStart TimeEnd DateEnd Time
11/11/2000000011/20/20002359
Subject:
NSA/MWR/C1 - incorrect flagging of data
DataStreams:nsamwrlosC1.a1, nsamwrlosC1.b1, nsamwrtipC1.a1
Description:
The wet window flag is set high more than expected.
Measurements:nsamwrlosC1.a1:
  • wet_window

nsamwrlosC1.b1:
  • wet_window

nsamwrtipC1.a1:
  • wet_window


Back To Table of Contents

DQRID : D010202.7
Start DateStart TimeEnd DateEnd Time
12/07/2000000012/22/20002359
Subject:
NSA/MWR/C1 - incorrect flagging of data
DataStreams:nsamwrlosC1.a1, nsamwrlosC1.b1, nsamwrtipC1.a1
Description:
The wet window flag is set high more frequent than expected.
Measurements:nsamwrlosC1.a1:
  • wet_window

nsamwrlosC1.b1:
  • wet_window

nsamwrtipC1.a1:
  • wet_window


Back To Table of Contents

DQRID : D010202.8
Start DateStart TimeEnd DateEnd Time
12/06/2000000012/27/20002359
Subject:
NSA/MWR/C2 - Wet-window flag incorrectly set
DataStreams:nsamwrlosC2.b1, nsamwrtipC2.a1
Description:
The wet window flag is set high more frequently than expected.
Measurements:nsamwrlosC2.b1:
  • wet_window

nsamwrtipC2.a1:
  • wet_window


Back To Table of Contents

DQRID : D010308.1
Start DateStart TimeEnd DateEnd Time
04/16/2000055405/11/20000100
02/16/2001190002/26/20010020
Subject:
NSA/MWR/C2 - Elevated sky brightness temperatures
DataStreams:nsamwrlosC2.b1, nsamwrtipC2.a1
Description:
The MWR was providing unreasonable values of sky brightness temperatures and values of 
precipitable water vapor and liquid water path that were about 10 times larger than 
expected. The problem was corrected when the instrument was power-cycled. The cause of the 
problem is unknown.
Measurements:nsamwrlosC2.b1:
  • Total liquid water along LOS path(liq)
  • 31.4 GHz sky brightness temperature(tbsky31)
  • Radiation, longwave, brightness temperature, 23.8 GHz(tbsky23)
  • Total water vapor along LOS path(vap)

nsamwrtipC2.a1:
  • tipsky23
  • tipsky31


Back To Table of Contents

DQRID : D010504.2
Start DateStart TimeEnd DateEnd Time
10/26/1999000311/02/19990008
11/09/1999000412/27/19990008
12/28/1999000401/08/20000008
01/11/2000000401/20/20000428
03/11/2000021803/22/20000449
04/16/2000153604/18/20000540
06/09/2000060506/12/20000408
09/28/2000003609/30/20000132
02/03/2001020802/05/20010014
06/23/2001000006/25/20011820
07/01/2001200007/04/20011745
07/15/2001180007/17/20011650
11/17/2001030011/28/20012332
01/21/2002222101/23/20020417
04/02/2002000004/03/20020151
04/15/2002232404/17/20020108
07/21/2002180007/23/20020448
12/18/2002221801/28/20032115
02/17/2003184202/25/20032044
09/22/2005193210/01/20051700
08/28/2006200004/15/20081519
11/10/2008190011/13/20082309
03/25/2009185903/28/20092033
10/22/2009071611/16/20091700
Subject:
NSA/MWR/C2 - Missing data
DataStreams:nsamwrlosC2.b1, nsamwrtipC2.a1
Description:
Data are missing and unrecoverable.
Measurements:nsamwrlosC2.b1:
  • Temperature, brightness, longwave(ir_temp)
  • tkxc
  • tc31
  • time_offset
  • bbn31
  • tc23
  • sky31
  • tnd31
  • alt
  • Total water vapor along LOS path(vap)
  • tkbb
  • tknd
  • bb31
  • base_time
  • tnd_nom23
  • bb23
  • IR Brightness Temperature(sky_ir_temp)
  • tkair
  • wet_window
  • sky23
  • Radiation, longwave, brightness temperature, 23.8 GHz(tbsky23)
  • lat
  • Total liquid water along LOS path(liq)
  • 31.4 GHz sky brightness temperature(tbsky31)
  • bbn23
  • lon
  • tnd_nom31
  • tnd23

nsamwrtipC2.a1:
  • tkbb
  • tbskytip31
  • wet_window
  • tnd23I
  • vaptip
  • lon
  • liqtip
  • alt
  • bb31
  • actaz
  • tc23
  • tipsky31
  • tbskytip23
  • tkair
  • bbn23
  • tnd_nom31
  • tknd
  • r23
  • tkxc
  • tnd23
  • bbn31
  • tipsky23
  • actel
  • lat
  • tnd31
  • tnd_nom23
  • tnd31I
  • r31
  • time_offset
  • base_time
  • bb23
  • tc31


Back To Table of Contents

DQRID : D010504.4
Start DateStart TimeEnd DateEnd Time
01/31/2001090002/06/20010237
Subject:
NSA/MWR/C1 - Reprocess: calibration change
DataStreams:nsamwrlosC1.a1, nsamwrlosC1.b1, nsamwrtipC1.a1
Description:
The computer was replaced but not configured correctly for the MWR.
Measurements:nsamwrlosC1.a1:
  • tnd_nom23
  • tc23
  • 31.4 GHz sky brightness temperature(tbsky31)
  • tnd_nom31
  • Total liquid water along LOS path(liq)
  • Total water vapor along LOS path(vap)
  • Radiation, longwave, brightness temperature, 23.8 GHz(tbsky23)
  • tc31

nsamwrlosC1.b1:
  • 31.4 GHz sky brightness temperature(tbsky31)
  • Total liquid water along LOS path(liq)
  • Radiation, longwave, brightness temperature, 23.8 GHz(tbsky23)
  • Total water vapor along LOS path(vap)

nsamwrtipC1.a1:
  • tnd_nom31
  • tnd_nom23
  • tipsky31
  • tc31
  • tc23
  • tipsky23


Back To Table of Contents

DQRID : D020122.1
Start DateStart TimeEnd DateEnd Time
09/27/2001190009/29/20011000
Subject:
NSA/MWR/C1 - Reprocess: wrong calibration
DataStreams:nsamwrlosC1.a1, nsamwrlosC1.b1
Description:
Moisture was found inside the lens of the MWR. Removal of the moisture caused a 
significant change in the calibration, especially in the 23.8 GHz channel. The calibration was 
updated automatically.
Measurements:nsamwrlosC1.a1:
  • 31.4 GHz sky brightness temperature(tbsky31)
  • Total liquid water along LOS path(liq)
  • Total water vapor along LOS path(vap)
  • Radiation, longwave, brightness temperature, 23.8 GHz(tbsky23)

nsamwrlosC1.b1:
  • 31.4 GHz sky brightness temperature(tbsky31)
  • Total water vapor along LOS path(vap)
  • Total liquid water along LOS path(liq)
  • Radiation, longwave, brightness temperature, 23.8 GHz(tbsky23)


Back To Table of Contents

DQRID : D020823.28
Start DateStart TimeEnd DateEnd Time
12/11/1998180012/11/19981810
12/12/1998103012/12/19981050
12/13/1998120012/13/19981210
12/14/1998180012/14/19981810
12/15/1998180012/15/19981810
12/16/1999220012/16/19992300
Subject:
NSA/MWR/C1 - Contamination or Calibration Effect
DataStreams:nsamwrlosC1.a1, nsamwrlosC1.b1
Description:
A short period of odd data occurs in PWV and the LWP.  Its a sudden offset in the data 
values.  Vic Morris suggests it could be a calibration issue as seen before at SGP.  Data 
make a marked change after the events (suggesting the data were questionable prior to this 
time).  No obvious changes in other instruments occur. Some of these effects may coincide 
with operator's preventive maintenance but others are in the middle of the night local 
time and can not be explained by cleaning.
Measurements:nsamwrlosC1.a1:
  • Total liquid water along LOS path(liq)
  • Total water vapor along LOS path(vap)

nsamwrlosC1.b1:
  • Total water vapor along LOS path(vap)
  • Total liquid water along LOS path(liq)


Back To Table of Contents

DQRID : D020823.29
Start DateStart TimeEnd DateEnd Time
01/06/1999175001/06/19991800
01/08/1999174001/08/19991800
01/11/1999174001/11/19991800
01/12/1999174001/12/19991800
Subject:
NSA/MWR/C1 - Frosting
DataStreams:nsamwrlosC1.a1, nsamwrlosC1.b1
Description:
Spike in PWV and LWP
. Operator reports instrument is frosted. Instrument teflon window was cleaned by 
operator.
Measurements:nsamwrlosC1.a1:
  • Total liquid water along LOS path(liq)
  • Total water vapor along LOS path(vap)

nsamwrlosC1.b1:
  • Total water vapor along LOS path(vap)
  • Total liquid water along LOS path(liq)


Back To Table of Contents

DQRID : D020823.30
Start DateStart TimeEnd DateEnd Time
09/21/1999000009/21/19990030
Subject:
NSA/MWR/C1 - Instrument maintenance
DataStreams:nsamwrlosC1.a1, nsamwrlosC1.b1
Description:
Installed cold weather insulation on radiometer, required time to thermally stabilize.
Measurements:nsamwrlosC1.a1:
  • skyn31
  • 31.4 GHz sky brightness temperature(tbsky31)
  • tnd23
  • Total liquid water along LOS path(liq)
  • Total water vapor along LOS path(vap)
  • IR Brightness Temperature(sky_ir_temp)
  • tair
  • sky23
  • tkxc
  • skyn23
  • bb23
  • tkbb
  • tc23
  • Temperature, brightness, longwave(ir_temp)
  • Radiation, longwave, brightness temperature, 23.8 GHz(tbsky23)
  • unoise23
  • tc31
  • bbn23
  • bb31
  • tnd_nom23
  • unoise31
  • bbn31
  • tkair
  • losn
  • sky31
  • tnd31
  • tnd_nom31
  • tknd
  • wet_window

nsamwrlosC1.b1:
  • 31.4 GHz sky brightness temperature(tbsky31)
  • IR Brightness Temperature(sky_ir_temp)
  • sky23
  • tkxc
  • Total water vapor along LOS path(vap)
  • tkbb
  • bbn23
  • tkair
  • bb23
  • sky31
  • tnd_nom31
  • Temperature, brightness, longwave(ir_temp)
  • bbn31
  • tnd23
  • tknd
  • tnd_nom23
  • bb31
  • wet_window
  • Total liquid water along LOS path(liq)
  • Radiation, longwave, brightness temperature, 23.8 GHz(tbsky23)
  • tnd31
  • tc23
  • tc31


Back To Table of Contents

DQRID : D020823.32
Start DateStart TimeEnd DateEnd Time
02/27/1999223002/27/19992300
Subject:
NSA/MWR/C1 - MWR moved
DataStreams:nsamwrlosC1.a1, nsamwrlosC1.b1
Description:
The MWR data are unreasonable during this period, because it was shutdown and moved by 
operations at this time.
Measurements:nsamwrlosC1.a1:
  • skyn31
  • 31.4 GHz sky brightness temperature(tbsky31)
  • tnd23
  • Total liquid water along LOS path(liq)
  • Total water vapor along LOS path(vap)
  • IR Brightness Temperature(sky_ir_temp)
  • alt
  • tair
  • actaz
  • tkxc
  • sky23
  • skyn23
  • bb23
  • tkbb
  • tc23
  • Temperature, brightness, longwave(ir_temp)
  • Radiation, longwave, brightness temperature, 23.8 GHz(tbsky23)
  • unoise23
  • lat
  • tc31
  • base_time
  • bbn23
  • bb31
  • tnd_nom23
  • time_offset
  • unoise31
  • bbn31
  • tkair
  • losn
  • sky31
  • tnd31
  • tnd_nom31
  • actel
  • tknd
  • wet_window
  • lon

nsamwrlosC1.b1:
  • 31.4 GHz sky brightness temperature(tbsky31)
  • IR Brightness Temperature(sky_ir_temp)
  • sky23
  • tkxc
  • Total water vapor along LOS path(vap)
  • alt
  • tkbb
  • bbn23
  • base_time
  • tkair
  • bb23
  • sky31
  • tnd_nom31
  • Temperature, brightness, longwave(ir_temp)
  • bbn31
  • lon
  • tnd23
  • tknd
  • tnd_nom23
  • bb31
  • time_offset
  • wet_window
  • lat
  • Total liquid water along LOS path(liq)
  • Radiation, longwave, brightness temperature, 23.8 GHz(tbsky23)
  • tnd31
  • tc23
  • actel
  • tc31
  • actaz


Back To Table of Contents

DQRID : D020823.33
Start DateStart TimeEnd DateEnd Time
01/24/1999114501/24/19992100
Subject:
NSA/MWR/C1 - negative PWV (bad calibration?)
DataStreams:nsamwrlosC1.a1, nsamwrlosC1.b1
Description:
During this time, the PWV drops to slightly negative values.  This could be related to 
calibration issues.
Measurements:nsamwrlosC1.a1:
  • Total water vapor along LOS path(vap)

nsamwrlosC1.b1:
  • Total water vapor along LOS path(vap)


Back To Table of Contents

DQRID : D020823.34
Start DateStart TimeEnd DateEnd Time
12/08/1998000001/22/19992359
Subject:
NSA/MWR/C1 - Heater/blower removed
DataStreams:nsamwrlosC1.a1, nsamwrlosC1.b1
Description:
Note that the heater/blower was removed from the MWR during this time.  This may impact 
snow removal from teflon window, thereby affecting the quality of the data between 
cleanings.
Measurements:nsamwrlosC1.a1:
  • tnd_nom23
  • skyn31
  • 31.4 GHz sky brightness temperature(tbsky31)
  • tnd23
  • Total liquid water along LOS path(liq)
  • Total water vapor along LOS path(vap)
  • IR Brightness Temperature(sky_ir_temp)
  • unoise31
  • tkair
  • tair
  • losn
  • tkxc
  • sky23
  • skyn23
  • tkbb
  • sky31
  • tnd31
  • tc23
  • tnd_nom31
  • Radiation, longwave, brightness temperature, 23.8 GHz(tbsky23)
  • Temperature, brightness, longwave(ir_temp)
  • unoise23
  • tc31
  • tknd
  • wet_window

nsamwrlosC1.b1:
  • 31.4 GHz sky brightness temperature(tbsky31)
  • tnd23
  • tknd
  • tnd_nom23
  • IR Brightness Temperature(sky_ir_temp)
  • sky23
  • tkxc
  • Total water vapor along LOS path(vap)
  • tkbb
  • wet_window
  • tkair
  • Total liquid water along LOS path(liq)
  • Radiation, longwave, brightness temperature, 23.8 GHz(tbsky23)
  • tnd31
  • tc23
  • sky31
  • tnd_nom31
  • tc31
  • Temperature, brightness, longwave(ir_temp)


Back To Table of Contents

DQRID : D020823.36
Start DateStart TimeEnd DateEnd Time
12/16/1998180012/16/19981815
10/25/1999180010/25/19991810
11/04/1999190011/04/19991910
12/15/1999214012/15/19992210
02/29/2000185002/29/20001900
04/04/2000180004/04/20001830
04/06/2000181504/06/20001830
04/23/2000081004/23/20000830
05/16/2000043005/16/20000500
05/16/2000063005/16/20000700
05/16/2000153005/16/20001545
05/24/2000180005/24/20001815
Subject:
NSA/MWR/C1 - Data spikes, possibly due to cleaning events
DataStreams:nsamwrlosC1.a1, nsamwrlosC1.b1
Description:
Unreasonable spikes occurred, which may be due to cleaning of 
the instrument by the operator.  Other cleaning events did
not result in obvious data spikes and have not been included 
in this report.
Measurements:nsamwrlosC1.a1:
  • 31.4 GHz sky brightness temperature(tbsky31)
  • Total liquid water along LOS path(liq)
  • Total water vapor along LOS path(vap)
  • Radiation, longwave, brightness temperature, 23.8 GHz(tbsky23)

nsamwrlosC1.b1:
  • 31.4 GHz sky brightness temperature(tbsky31)
  • Total water vapor along LOS path(vap)
  • Total liquid water along LOS path(liq)
  • Radiation, longwave, brightness temperature, 23.8 GHz(tbsky23)


Back To Table of Contents

DQRID : D020824.4
Start DateStart TimeEnd DateEnd Time
06/18/2001020006/18/20010300
Subject:
NSA/MWR/C2 - Instrument Maintenance
DataStreams:nsamwrlosC2.b1
Description:
Exchange of winter cover caused data corruption.
Measurements:nsamwrlosC2.b1:
  • Total liquid water along LOS path(liq)
  • sky23
  • 31.4 GHz sky brightness temperature(tbsky31)
  • Radiation, longwave, brightness temperature, 23.8 GHz(tbsky23)
  • sky31
  • Total water vapor along LOS path(vap)


Back To Table of Contents

DQRID : D021017.1
Start DateStart TimeEnd DateEnd Time
02/04/2002082403/16/20020056
Subject:
NSA/MWR/C1 - MWR digital board failure
DataStreams:nsamwrlosC1.a1, nsamwrlosC1.b1
Description:
A power failure at the site apparently damaged some of the components of the digital 
board. The MWR was replaced with a spare unit and returned to the manufacturer for repair.
Measurements:nsamwrlosC1.a1:
  • 31.4 GHz sky brightness temperature(tbsky31)
  • Total liquid water along LOS path(liq)
  • Total water vapor along LOS path(vap)
  • Radiation, longwave, brightness temperature, 23.8 GHz(tbsky23)

nsamwrlosC1.b1:
  • 31.4 GHz sky brightness temperature(tbsky31)
  • Total water vapor along LOS path(vap)
  • Total liquid water along LOS path(liq)
  • Radiation, longwave, brightness temperature, 23.8 GHz(tbsky23)


Back To Table of Contents

DQRID : D030312.6
Start DateStart TimeEnd DateEnd Time
11/07/1999180009/16/20021820
Subject:
SGP/MWR/C1 - Intermittent Negative Sky Brightness Temperatures
DataStreams:nsamwrlosC1.a1, nsamwrlosC1.b1
Description:
Several related and recurring problems with the MWRs have been reported
dating back to 1999.  These problems were due to the occurrence of
blackbody signals (in counts) that were half of those expected. The
symptoms included noisy data, spikes in the data, negative brightness
temperatures, and apparent loss of serial communication between the
computer and the radiometer, which results in a self-termination of the
MWR program.

Because these all initially appeared to be hardware-related problems,
the instrument mentor and site operations personnel (1) repeatedly
cleaned and replaced the fiber optic comm. components, (2) swapped
radiometers, (3) sent radiometers back to Radiometrics for evaluation
(which did not revealed any instrument problems), and (4) reconfigured
the computer's operating system.  Despite several attempts to isolate
and correct it, the problem persisted.

It became apparent that some component of the Windows98 configuration
conflicted with the DOS-based MWR program or affected the serial port
or the contents of the serial port buffer. This problem was finally
corrected by upgrading the MWR software with a new Windows-compatible
program.
Measurements:nsamwrlosC1.a1:
  • 31.4 GHz sky brightness temperature(tbsky31)
  • Total liquid water along LOS path(liq)
  • Total water vapor along LOS path(vap)
  • Radiation, longwave, brightness temperature, 23.8 GHz(tbsky23)

nsamwrlosC1.b1:
  • 31.4 GHz sky brightness temperature(tbsky31)
  • Total water vapor along LOS path(vap)
  • Total liquid water along LOS path(liq)
  • Radiation, longwave, brightness temperature, 23.8 GHz(tbsky23)


Back To Table of Contents

DQRID : D030312.7
Start DateStart TimeEnd DateEnd Time
02/15/2000060009/16/20021900
Subject:
NSA/MWR/C2 - Intermittent Negative Sky Brightness Temperatures
DataStreams:nsamwrlosC2.b1
Description:
Several related and recurring problems with the MWRs have been reported
dating back to 1999.  These problems were due to the occurrence of
blackbody signals (in counts) that were half of those expected. The
symptoms included noisy data, spikes in the data, negative brightness
temperatures, and apparent loss of serial communication between the
computer and the radiometer, which results in a self-termination of the
MWR program.

Because these all initially appeared to be hardware-related problems,
the instrument mentor and site operations personnel (1) repeatedly
cleaned and replaced the fiber optic comm. components, (2) swapped
radiometers, (3) sent radiometers back to Radiometrics for evaluation
(which did not revealed any instrument problems), and (4) reconfigured
the computer's operating system.  Despite several attempts to isolate
and correct it, the problem persisted.

It became apparent that some component of the Windows98 configuration
conflicted with the DOS-based MWR program or affected the serial port
or the contents of the serial port buffer. This problem was finally
corrected by upgrading the MWR software with a new Windows-compatible
program.
Measurements:nsamwrlosC2.b1:
  • Total liquid water along LOS path(liq)
  • 31.4 GHz sky brightness temperature(tbsky31)
  • Radiation, longwave, brightness temperature, 23.8 GHz(tbsky23)
  • Total water vapor along LOS path(vap)


Back To Table of Contents

DQRID : D030515.3
Start DateStart TimeEnd DateEnd Time
05/13/2003190601/15/20050054
Subject:
NSA/MWR/C1  - no air temperature signal
DataStreams:nsamwrC1.00, nsamwrlosC1.b1, nsamwrtipC1.a1
Description:
When the new blower was upgraded by Radiometrics and reinstalled on the MWR, the air 
temperature sensor failed to properly report. It was determined that the wires carrying the 
signal to the analog board did not conform to the standard expected by the upgraded blower. 
The problem was corrected by changing the wiring and modifying the MWR software to read 
the signal from the appropriate corresponding channel.
Measurements:nsamwrlosC1.b1:
  • tkair

nsamwrC1.00:
  • Raw data stream - documentation not supported

nsamwrtipC1.a1:
  • tkair


Back To Table of Contents

DQRID : D030724.1
Start DateStart TimeEnd DateEnd Time
06/19/2003232407/21/20030824
Subject:
NSA/MWR/C2 - Thermally unstable
DataStreams:nsamwrlosC2.b1
Description:
The MWR became thermally unstable during periods when the ambient temperature exceeded 
about 28C. This situation was corrected when the mixer temperature was manually increased to 
about 35C.

Data are suspect when the blackbody temperature, tkbb, exceeds 296 K.
Measurements:nsamwrlosC2.b1:
  • Total liquid water along LOS path(liq)
  • 31.4 GHz sky brightness temperature(tbsky31)
  • Radiation, longwave, brightness temperature, 23.8 GHz(tbsky23)
  • Total water vapor along LOS path(vap)


Back To Table of Contents

DQRID : D030822.7
Start DateStart TimeEnd DateEnd Time
01/02/1998000002/08/20032359
Subject:
NSA/MWR/C1 - min/max/delta values incorrect
DataStreams:nsamwrlosC1.b1
Description:
The values of valid_min, valid_max, and valid_delta for fields tkxc and tknd were 
incorrect. They should be 303, 333, and 0.5 K, respectively.
Measurements:nsamwrlosC1.b1:
  • tkxc
  • tknd


Back To Table of Contents

DQRID : D040102.4
Start DateStart TimeEnd DateEnd Time
11/23/2003000001/09/20042030
Subject:
NSA/MWR/C2 - Heater problem
DataStreams:nsamwrlosC2.b1, nsamwrtipC2.a1
Description:
The MWR heater did not appear to operate when moisture was present. The heater sensitivity 
was adjusted.
Measurements:nsamwrlosC2.b1:
  • wet_window

nsamwrtipC2.a1:
  • wet_window


Back To Table of Contents

DQRID : D040116.1
Start DateStart TimeEnd DateEnd Time
01/07/2004200701/09/20040032
Subject:
NSA/MWR/C1 - damaged window
DataStreams:nsamwrlosC1.a1, nsamwrlosC1.b1, nsamwrtipC1.a1, nsaqmemwrcolC1.c1
Description:
The MWR dielectric window was damaged by snow from a snow blower and replaced.
Measurements:nsamwrlosC1.a1:
  • skyn31
  • 31.4 GHz sky brightness temperature(tbsky31)
  • tnd23
  • Total liquid water along LOS path(liq)
  • Total water vapor along LOS path(vap)
  • sky23
  • skyn23
  • bb23
  • tkbb
  • tc23
  • Radiation, longwave, brightness temperature, 23.8 GHz(tbsky23)
  • unoise23
  • tc31
  • bbn23
  • bb31
  • tnd_nom23
  • unoise31
  • bbn31
  • tkair
  • sky31
  • tnd31
  • tnd_nom31
  • tknd
  • wet_window

nsamwrlosC1.b1:
  • 31.4 GHz sky brightness temperature(tbsky31)
  • sky23
  • tkxc
  • Total water vapor along LOS path(vap)
  • tkbb
  • bbn23
  • tkair
  • bb23
  • sky31
  • tnd_nom31
  • bbn31
  • tnd23
  • tknd
  • tnd_nom23
  • bb31
  • wet_window
  • Total liquid water along LOS path(liq)
  • Radiation, longwave, brightness temperature, 23.8 GHz(tbsky23)
  • tnd31
  • tc23
  • tc31

nsaqmemwrcolC1.c1:
  • mean_tbsky23_mwr
  • mean_liq_mwr
  • sd_liq_mwr
  • mean_tbsky31_mwr
  • sd_tbsky23_mwr
  • num_tbsky23_mwr
  • num_tbsky31_mwr
  • sd_vap_mwr
  • num_vap_mwr
  • num_liq_mwr
  • mean_vap_mwr
  • sd_tbsky31_mwr

nsamwrtipC1.a1:
  • tnd_nom23
  • bb31
  • tnd31I
  • liqtip
  • bbn31
  • r31
  • tkair
  • tnd_nom31
  • tknd
  • tc23
  • r23
  • bbn23
  • tkxc
  • tnd23
  • tc31
  • tkbb
  • tbskytip31
  • vaptip
  • bb23
  • tnd23I
  • tipsky31
  • tipsky23
  • tbskytip23
  • tnd31


Back To Table of Contents

DQRID : D050112.1
Start DateStart TimeEnd DateEnd Time
12/13/2004100012/13/20042330
Subject:
NSA/C1 - Site-wide power failure
DataStreams:nsamplC1.a1, nsamwrpC1.b1, nsamplpsC1.a0, nsamwrlosC1.b1, nsamwrtipC1.a1, nsaaerich1C1.b1,
nsaaerich2C1.b1, nsammcrmomC1.b1, nsamettwr4hC1.b1, nsavceil25kC1.b1,
nsatwrcam40mC1.a1, nsaaerisummaryC1.b1, nsaaeriengineerC1.b1, nsa915rwptempconC1.a1,
nsa915rwptempmomC1.a0, nsa915rwpwindconC1.a1, nsa915rwpwindmomC1.a0, nsa915rwptempspecC1.a0,
nsa915rwpwindspecC1.a0
Description:
The Barrow facility experienced a site-wide power failure on 12/13.  Power was restored to 
most instruments between 2250 and 2330 GMT.
Measurements:nsa915rwpwindspecC1.a0:
  • Backscatter, doppler spectrum, 915 MHz RWP(spc_amp)
  • alt
  • plen
  • ncoh
  • tditime
  • bswitch
  • time_offset
  • nspc
  • sitime
  • vband
  • bins
  • elevation
  • dly
  • lon
  • nheight
  • sampr
  • base_time
  • height_t
  • range_gate
  • prf
  • rgs
  • oband
  • pcbits
  • vsr
  • spcavetim
  • ipp
  • beam
  • lat
  • rgl
  • rgf

nsa915rwpwindconC1.a1:
  • Eastward Wind Component(u_wind)
  • lon
  • nspc
  • power
  • avgint
  • rgs
  • snr3
  • snr4
  • snr0
  • snr1
  • snr2
  • dly
  • vvsr
  • Wind direction, horizontal, at altitude, 915 MHz RWP(dir)
  • oband
  • tditime
  • rgl
  • rgf
  • range_gate
  • ncoh
  • time_offset
  • lat
  • prf
  • base_time
  • ovsr
  • azimuth1
  • azimuth0
  • azimuth3
  • azimuth2
  • Beam 2 radial wind speed(vel2)
  • Beam 1 radial wind speed(vel1)
  • azimuth4
  • Beam 4 radial wind speed(vel4)
  • Beam 3 radial wind speed(vel3)
  • sampr
  • Beam 0 radial wind speed(vel0)
  • ipp
  • nrcns4
  • nrcns3
  • nrcns2
  • nrcns1
  • nrcns0
  • ncns1
  • ncns0
  • ncns3
  • ncns2
  • ncns4
  • sitime
  • Wind speed, horizontal, at altitude, 915 MHz RWP(spd)
  • plen
  • spcavetim
  • alt
  • nheight
  • nrec0
  • nrec1
  • nrec2
  • nrec3
  • nrec4
  • elevation0
  • Northward Wind Component(v_wind)
  • elevation2
  • elevation1
  • elevation4
  • elevation3
  • height_p
  • vband
  • pcbits
  • bswitch

nsaaerich2C1.b1:
  • Radiation, longwave, downwelling radiance, 0.5 cm-1 resolution, 3.3-5.5 um(mean_rad)
  • AERIunitNumber
  • calibratedSceneID
  • timeHHMMSS
  • wnum2
  • Time_UTC_hours
  • systemReleaseNumber
  • channelNumber
  • time_offset
  • base_time
  • alt
  • Longitude
  • BBsupportStructureTemp
  • atmosphericRelativeHumidity
  • missingDataFlag
  • calibrationCBBtemp
  • instrumentUnitNumber
  • Latitude
  • sceneMirrorAngle
  • dateYYMMDD
  • calibrationAmbientTemp
  • atmosphericPressure
  • wnum
  • outsideAirTemp
  • calibrationHBBtemp
  • lat
  • hatchOpen
  • JulianDay
  • sceneViewDuration
  • standard_dev_mean_rad
  • time
  • lon
  • sceneMirPosEncoderMaxDrift
  • Altitude

nsamwrlosC1.b1:
  • IR Brightness Temperature(sky_ir_temp)
  • wet_window
  • 31.4 GHz sky brightness temperature(tbsky31)
  • Radiation, longwave, brightness temperature, 23.8 GHz(tbsky23)
  • tkbb
  • alt
  • tnd_nom31
  • tnd_nom23
  • bb23
  • bb31
  • time_offset
  • tc23
  • tc31
  • tknd
  • lat
  • actel
  • tnd23
  • tnd31
  • tkxc
  • Temperature, brightness, longwave(ir_temp)
  • sky23
  • bbn23
  • base_time
  • sky31
  • bbn31
  • actaz
  • tkair
  • lon
  • Total liquid water along LOS path(liq)
  • Total water vapor along LOS path(vap)

nsaaerisummaryC1.b1:
  • sceneMirPosEncoderMaxDrift
  • skyViewStdDevRadiance675_680
  • Radiation, longwave, brightness temp, surface air, mean, 675-680 cm-1(surfaceLayerAirTemp675_680)
  • JulianDay
  • SWskyNENacceptable
  • channelNumber
  • calibrationAmbientTemp
  • LW_HBB_NEN
  • Radiation, longwave, radiance, elevated air, mean, 2282-2287 cm-1(elevatedLayerRadiance2282_2287)
  • LWskyNEN
  • Latitude
  • lon
  • systemReleaseNumber
  • skyViewStdDevRadiance985_990
  • AERI LW Scene Radiance Spectral Averages (Ch1)(SkyRadianceSpectralAveragesCh1)
  • AERI SW Scene Radiance Spectral Averages (Ch2)(SkyRadianceSpectralAveragesCh2)
  • outsideAirTemp
  • wnumsum7
  • wnumsum6
  • wnumsum5
  • wnumsum4
  • wnumsum3
  • wnumsum2
  • wnumsum1
  • wnumsum9
  • wnumsum8
  • HBB2minNENestimateNo1Ch1
  • HBB2minNENestimateNo1Ch2
  • HBBstable
  • Radiation, longwave, radiance, atmospheric window, mean, 985-990 cm-1(longwaveWindowRadiance985_990)
  • LWresponsivity
  • maxSampleStdDev
  • lat
  • Altitude
  • dataAvailable
  • instrumentUnitNumber
  • time_offset
  • calibrationHBBtemp
  • atmosphericPressure
  • LWskyNENacceptable
  • Radiation, longwave, radiances, SD, 25 cm-1 spectral avgs, 5.5-18 um(SkyUniformityCh1)
  • Radiation, longwave, radiances, SD, 25 cm-1 spectral avgs, 3.3-5.5 um(SkyUniformityCh2)
  • time
  • calibratedSceneID
  • atmosphericRelativeHumidity
  • sceneViewDuration
  • Radiation, longwave, brightness temp, 25 cm-1 spectral avgs, 3.3-5.5 um(SkyBrightnessTempSpectralAveragesCh2)
  • sceneMirPosEncoderDrift
  • Radiation, longwave, brightness temp, 25 cm-1 spectral avgs, 5.5-18 um(SkyBrightnessTempSpectralAveragesCh1)
  • ResponsivitySpectralAveragesCh1
  • ResponsivitySpectralAveragesCh2
  • SkyNENCh1
  • SkyNENCh2
  • hatchOpen
  • Radiation, longwave, brightness temp, elevated air, mean, 2282-2287 cm-1(elevatedLayerAirTemp2282_2287)
  • SW_HBB_NEN
  • sceneMirrorAngle
  • Radiation, longwave, radiance, atmospheric window, mean, 2510-2515 cm-1(shortwaveWindowRadiance2510_2515)
  • Radiation, longwave, brightness temp, elevated air, mean, 700-705 cm-1(elevatedLayerAirTemp700_705)
  • Radiation, longwave, brightness temp, atmospheric window, mean, 2510-2515 cm-1(shortwaveWindowAirTemp2510_2515)
  • HBB2minNENestimateNo2Ch2
  • HBB2minNENestimateNo2Ch1
  • skyViewStdDevRadiance2510_2515
  • dateYYMMDD
  • alt
  • Radiation, longwave, radiance, surface air, mean, 2295-2300 cm-1(surfaceLayerRadiance2295_2300)
  • base_time
  • skyViewStdDevRadiance2282_2287
  • Radiation, longwave, brightness temp, surface air, mean, 2295-2300 cm-1(surfaceLayerAirTemp2295_2300)
  • SWskyNEN
  • wnumsum11
  • wnumsum12
  • wnumsum13
  • wnumsum14
  • wnumsum10
  • skyViewStdDevRadiance700_705
  • SWresponsivity
  • Longitude
  • HBBtempDrift
  • sunSensorIntensity
  • Radiation, longwave, radiance, surface air, mean, 675-680 cm-1(surfaceLayerRadiance675_680)
  • missingDataFlag
  • ABBmaxTempDiff
  • Radiation, longwave, radiance, elevated air, mean, 700-705 cm-1(elevatedLayerRadiance700_705)
  • HBBmaxTempDiff
  • timeHHMMSS
  • AERIunitNumber
  • skyViewStdDevRadiance2295_2300
  • frontEndFanAirTempDiff
  • calibrationCBBtemp
  • Time_UTC_hours
  • rainSensorIntensity
  • Radiation, longwave, brightness temp, atmospheric window, mean, 985-990 cm-1(longwaveWindowAirTemp985_990)

nsa915rwptempmomC1.a0:
  • base_time
  • rgs
  • noise
  • Signal to noise ratio(snr)
  • Pressure, associated geometric height, at altitude, NGM model output(height)
  • Temperature, virtual, profile, merged from 50 and 915 MHz RASS(virtual_temp)
  • Mean radial beam velocity(mdf)
  • smdf
  • lon
  • time_offset
  • sampr
  • Spectral width(specw)
  • alt
  • ssnr
  • sspecw
  • lat

nsaaerich1C1.b1:
  • lon
  • Time_UTC_hours
  • atmosphericPressure
  • JulianDay
  • sceneMirrorAngle
  • hatchOpen
  • outsideAirTemp
  • Longitude
  • dateYYMMDD
  • time
  • sceneViewDuration
  • Radiation, longwave, downwelling radiance, 0.5 cm-1 resolution, 3.3-5.5 um(mean_rad)
  • sceneMirPosEncoderMaxDrift
  • timeHHMMSS
  • base_time
  • calibrationCBBtemp
  • Latitude
  • calibrationHBBtemp
  • missingDataFlag
  • instrumentUnitNumber
  • atmosphericRelativeHumidity
  • systemReleaseNumber
  • channelNumber
  • wnum2
  • lat
  • BBsupportStructureTemp
  • standard_dev_mean_rad
  • Altitude
  • wnum
  • calibratedSceneID
  • AERIunitNumber
  • alt
  • time_offset
  • calibrationAmbientTemp

nsamplpsC1.a0:
  • range_bin_time
  • background_signal
  • time
  • shots_summed
  • lat
  • voltage_15
  • max_altitude
  • voltage_05
  • voltage_10
  • pulse_rep
  • instrument_temp
  • detector_temp
  • Pressure, associated geometric height, at altitude, NGM model output(height)
  • laser_temp
  • time_offset
  • range_offset
  • range
  • filter_temp
  • Preliminary cloud base height above ground level(preliminary_cbh)
  • energy_monitor
  • alt
  • range_bins
  • detector_counts
  • base_time
  • lon
  • range_bin_width

nsavceil25kC1.b1:
  • status_string
  • Backscatter(backscatter)
  • Lowest cloud base height detected.(first_cbh)
  • tilt_angle
  • base_time
  • Second lowest cloud base height(second_cbh)
  • detection_status
  • alt_highest_signal
  • window_contamination
  • receiver_sensitivity
  • Vertical visibility(vertical_visibility)
  • laser_temperature
  • alt
  • time_offset
  • filename
  • lat
  • laser_pulse_energy
  • sum_backscatter
  • status_flag
  • lon
  • background_light
  • Third cloud base height(third_cbh)
  • measurement_parameters
  • range

nsa915rwptempspecC1.a0:
  • Pressure, associated geometric height, at altitude, NGM model output(height)
  • sampr
  • rgs
  • lat
  • lon
  • base_time
  • time_offset
  • alt
  • Backscatter, doppler spectrum, 915 MHz RWP(spc_amp)
  • bins

nsa915rwptempconC1.a1:
  • SNR Corrected Beam 0 Virtual Temperature(snr_virtual_temp_corr)
  • ncns_virtual_temp
  • SNR Beam 0 Virtual Temperature(snr_virtual_temp)
  • Pressure, associated geometric height, at altitude, NGM model output(height)
  • rgs
  • ncns_vert_v
  • ncns_virtual_temp_corr
  • time_offset
  • Temperature, virtual, profile, merged from 50 and 915 MHz RASS(virtual_temp)
  • Wind speed, vertical velocity, at altitude, 915 MHz RWP(vert_v)
  • lat
  • nrcns
  • base_time
  • SNR Vertical wind velocity(snr_vert_v)
  • sampr
  • lon
  • Temperature, virtual, at altitude, 10-min cons. avg, corrected, 915 MHz RWP/RASS(virtual_temp_corr)
  • avgint
  • alt
  • nrec

nsaaeriengineerC1.b1:
  • BBcontroller2temp
  • skyViewImaginaryRadiance2295_2300
  • ABBtempOffset
  • HBBmaxTempDiff
  • skyViewImaginaryRadiance2510_2515
  • detectorTemp
  • coadditionsCount
  • calibrationHBBtemp
  • Radiation, longwave, radiance, surface air, mean, 675-680 cm-1(surfaceLayerRadiance675_680)
  • HBBapexTemp
  • skyViewStdDevRadiance985_990
  • ABBviewStdDevRadiance2295_2300
  • systemReleaseNumber
  • skyViewStdDevRadiance2510_2515
  • base_time
  • ABBviewStdDevRadiance985_990
  • timeHHMMSS
  • sceneMirrorAngle
  • LW_HBB_NEN
  • spareTemp
  • HBBstable
  • Latitude
  • sceneMirPosEncoderMaxDrift
  • Radiation, longwave, brightness temp, elevated air, mean, 2282-2287 cm-1(elevatedLayerAirTemp2282_2287)
  • channelNumber
  • HBBviewStdDevRadiance700_705
  • outsideAirTemp
  • HBBviewStdDevRadiance2510_2515
  • rackAmbientTemp
  • calibratedSceneID
  • frontEndFanAirHeatedTemp
  • HBBtempOffset
  • instrumentUnitNumber
  • ABBtopTemp
  • skyViewImaginaryRadiance700_705
  • fixed2500ohmResistor
  • missingDataFlag
  • time_offset
  • fixed97KohmResistor
  • LWskyNEN
  • HBBapexTempWeight
  • ABBbottomTempWeight
  • expandedInterferogramSize
  • Radiation, longwave, brightness temp, atmospheric window, mean, 2510-2515 cm-1(shortwaveWindowAirTemp2510_2515)
  • coolerCurrent
  • ABBviewStdDevRadiance700_705
  • HBBbottomTemp
  • frontEndFanAirUnheatedTemp
  • computerTemp
  • lon
  • LWresponsivity
  • calibrationAmbientTemp
  • interferometerSecondPortTemp
  • skyViewStdDevRadiance700_705
  • Radiation, longwave, brightness temp, elevated air, mean, 700-705 cm-1(elevatedLayerAirTemp700_705)
  • interferometerEnclosureRelativeHumidity
  • originalInterferogramSize
  • HBBviewStdDevRadiance985_990
  • maxSampleStdDev
  • Radiation, longwave, radiance, atmospheric window, mean, 2510-2515 cm-1(shortwaveWindowRadiance2510_2515)
  • motorDriverTemp
  • SWskyNENlimit
  • Longitude
  • alt
  • HBBviewStdDevRadiance675_680
  • HBBviewStdDevRadiance2282_2287
  • ABBapexTemp
  • hatchOpen
  • skyViewImaginaryRadiance2282_2287
  • ABBbottomTemp
  • AERIunitNumber
  • Altitude
  • LWskyNENacceptable
  • sceneMirPosCount
  • sceneMirrorMotorStep
  • SWresponsivity
  • lat
  • originalLaserWavenumber
  • Radiation, longwave, brightness temp, surface air, mean, 2295-2300 cm-1(surfaceLayerAirTemp2295_2300)
  • Radiation, longwave, radiance, atmospheric window, mean, 985-990 cm-1(longwaveWindowRadiance985_990)
  • ABBviewStdDevRadiance675_680
  • BBsupportStructureTemp
  • HBBviewStdDevRadiance2295_2300
  • sceneMirPosEncoder
  • rainSensorIntensity
  • twoMinuteNoiseEstimateFactor
  • skyViewImaginaryRadiance985_990
  • SCEtemp
  • sceneViewDuration
  • ABBviewStdDevRadiance2282_2287
  • skyViewImaginaryRadiance675_680
  • BBcontroller1temp
  • dateYYMMDD
  • HBBtopTempWeight
  • airNearBBsTemp
  • ABBmaxTempDiff
  • HBBtempDriftLimit
  • Radiation, longwave, radiance, surface air, mean, 2295-2300 cm-1(surfaceLayerRadiance2295_2300)
  • BBcavityFactor
  • coolerCompressorTemp
  • sceneMirrorTemp
  • coolerExpanderTemp
  • coolerPowerSupplyTemp
  • dataAvailable
  • skyViewStdDevRadiance675_680
  • Time_UTC_hours
  • Radiation, longwave, brightness temp, atmospheric window, mean, 985-990 cm-1(longwaveWindowAirTemp985_990)
  • HBBtempDrift
  • sunSensorIntensity
  • atmosphericRelativeHumidity
  • sceneMirrorPosition
  • ABBviewStdDevRadiance2510_2515
  • atmosphericPressure
  • HBBtopTemp
  • skyViewStdDevRadiance2282_2287
  • SWskyNENacceptable
  • time
  • JulianDay
  • ABBapexTempWeight
  • Radiation, longwave, brightness temp, surface air, mean, 675-680 cm-1(surfaceLayerAirTemp675_680)
  • SW_HBB_NEN
  • ABBtopTempWeight
  • LWskyNENlimit
  • fixed12KohmResistor
  • SWskyNEN
  • airNearInterferometerTemp
  • Radiation, longwave, radiance, elevated air, mean, 700-705 cm-1(elevatedLayerRadiance700_705)
  • mirrorMotorTemp
  • Radiation, longwave, radiance, elevated air, mean, 2282-2287 cm-1(elevatedLayerRadiance2282_2287)
  • FFOVhalfAngle
  • interferometerWindowTemp
  • sceneMirPosEncoderDrift
  • skyViewStdDevRadiance2295_2300
  • HBBbottomTempWeight
  • calibrationCBBtemp
  • outputLaserWavenumber
  • opticsCompartmentRelativeHumidity
  • numberOfTerms
  • frontEndFanAirTempDiff

nsamplC1.a1:
  • range_bin_time
  • detector_temp
  • total_counts
  • scalar_sync_offset
  • Pressure, associated geometric height, at altitude, NGM model output(height)
  • transceiver_azimuth_angle
  • time_offset
  • laser_sync_offset
  • Preliminary cloud base height above ground level(preliminary_cbh)
  • voltage_10
  • voltage_15
  • voltage_05
  • trigger_freq
  • time
  • instrument_temp
  • shots_sum
  • filter_temp
  • Backscatter(backscatter)
  • alt
  • lon
  • base_time
  • pulse_rep
  • background_signal
  • deadtime_correction
  • laser_scalar_sync_offset
  • lat
  • range
  • max_altitude
  • range_bin_width
  • energy_monitor
  • range_offset
  • shots_summed
  • property
  • laser_temp
  • transceiver_altitude_angle
  • range_bins

nsammcrmomC1.b1:
  • ReceiverNumber
  • CalCheckTime
  • RxCalTimeStamp
  • TWTStatusCode
  • DCFilterONOFF
  • base_time
  • NumCodeBits
  • MMCR Mean Doppler Velocity(MeanDopplerVelocity)
  • WindowingONOFF
  • NumFFT
  • ReceiverMode
  • GateSpacing
  • NumHeights
  • heights
  • CalCheckLevel
  • PulseWidth
  • NumSpectralAverages
  • SkyNoiseLevel
  • Power
  • DataQualityStatus
  • SignalToNoiseRatio
  • ClutterHeight
  • ModeNum
  • NumCoherentIntegrations
  • MinimumDetectableReflectivity
  • time_offset
  • Cloud, reflectivity, at altitude(Reflectivity)
  • Rx290KLevel
  • lon
  • NyquistVelocity
  • ModeDescription
  • PeakTransmittedPowerAvg
  • TimeAvg
  • StartGateDelay
  • InterPulsePeriod
  • lat
  • alt
  • RxGain
  • time
  • NumReceivers
  • RangeCorrectedPower
  • MMCR Spectral Width(SpectralWidth)
  • AvgNoiseLevel
  • NoiseLevel
  • CircularDepolarizationRatio
  • RadarConstant

nsamettwr4hC1.b1:
  • lat
  • SonicWD_SDU_WVT
  • RH10M_STD
  • VP10M_STD
  • Relative humidity, average, at 10-m height(RH10M_AVG)
  • Wind speed, vector-averaged, at 10-m height(WS10M_U_WVT)
  • Temperature, dew point, average, at 2-m height(DP2M_AVG)
  • Pressure, vapor, at 2-m height(VP2M_AVG)
  • Pressure, vapor, at 20-m height(VP20M_AVG)
  • Temperature, dew point, average, at 10-m height(DP10M_AVG)
  • CMHTemp
  • VP20M_STD
  • DP20M_STD
  • Wind speed, mean, at 2-m height(WS2M_S_WVT)
  • Wind speed, vector-averaged, at 2-m height(WS2M_U_WVT)
  • RefT10m_AVG
  • DP40M_STD
  • Wind direction, vector-averaged, at 40-m height(WD40M_DU_WVT)
  • Wind speed, mean, at 40-m height(WS40M_S_WVT)
  • time
  • RefT40M_AVG
  • DP10M_STD
  • PWSAlarm
  • WD40M_SDU_WVT
  • alt
  • RefT2M_AVG
  • Wind speed, vector-averaged, at 20-m height(WS20M_U_WVT)
  • SatVPCMH
  • PwCod1hr
  • lon
  • Temperature, air, average, at 10-m height(T10M_AVG)
  • Temperature, dew point, average, at 20-m height(DP20M_AVG)
  • SonicS_AVG
  • T40M_STD
  • VPCMH
  • DP2M_STD
  • RH40M_STD
  • RefT20M_AVG
  • VP40M_STD
  • PcpRate
  • base_time
  • Pressure, atmospheric(AtmPress)
  • SonicX_AVG
  • Visibility, 1 minute average(AvgVis1mi)
  • WD2M_SDU_WVT
  • Wind direction, vector-averaged, at 20-m height(WD20M_DU_WVT)
  • Visibility, 10 minute average(AvgVis10m)
  • CMHDP
  • Temperature, air, average, at 20-m height(T20M_AVG)
  • T10M_STD
  • CumH2O
  • CumSnow
  • PwCod15mi
  • T20M_STD
  • Volt10M_AVG
  • SonicY_AVG
  • Relative humidity, average, at 40-m height(RH40M_AVG)
  • WD10M_SDU_WVT
  • WD20M_SDU_WVT
  • Wind direction vector mean(SonicWD_DU_WVT)
  • Temperature, air, average, at 40-m height(T40M_AVG)
  • Wind speed, mean, at 10-m height(WS10M_S_WVT)
  • Pressure, vapor, at 10-m height(VP10M_AVG)
  • InstPwCod
  • Volt40M_AVG
  • Wind direction, vector-averaged, at 10-m height(WD10M_DU_WVT)
  • RH2M_STD
  • Batt_Volt
  • Relative humidity, average, at 2-m height(RH2M_AVG)
  • Wind speed, vector-averaged, at 40-m height(WS40M_U_WVT)
  • T2M_STD
  • Temperature, air, average, at 2-m height(T2M_AVG)
  • Temperature, dew point, average, at 40-m height(DP40M_AVG)
  • VP2M_STD
  • time_offset
  • Wind speed vector mean(SonicWS_U_WVT)
  • RH20M_STD
  • Pressure, vapor, at 40-m height(VP40M_AVG)
  • Relative humidity, average, at 20-m height(RH20M_AVG)
  • Wind speed, mean, at 20-m height(WS20M_S_WVT)
  • Wind direction, vector-averaged, at 2-m height(WD2M_DU_WVT)
  • Volt20M_AVG
  • Volt2M_AVG
  • Wind speed arithmetic mean(SonicWS_S_WVT)
  • CMHRH

nsamwrpC1.b1:
  • azimuth
  • Density, water vapor, prof. from sfc.-10 km, der. from Tbright stat. retrvl.(waterVaporDensity)
  • alt
  • frequency
  • Temperature, air, at instrument height (1 or 2 m)(surfaceTemperature)
  • elevation
  • Liquid water content, cloud, vert. prof. sfc.-10km, from Tbright stat. retrvl.(liquidWaterContent)
  • Humidity, relative, at instrument height (1 or 2 m)(surfaceRelativeHumidity)
  • Water vapor, tot. precipitable, from Tbright, 23.835 & 30.0 GHz, stat. retrvl.(totalPrecipitableWater2)
  • Pressure, lifting condensation level(liftingCondensationLevelPres)
  • Liquid water path, from Tbright at 23.835 and 30.0 GHz only, using stat. retrvl.(liquidWaterPath2)
  • Water vapor, total precipitable, derived from Tbright using stat. retrvl.(totalPrecipitableWater)
  • base_time
  • totalPrecipitableWaterRmsError
  • Temperature, virtual, vert. prof. sfc-10km, fr. wtr. vap. dens. and temp. prof.(virtualTemperature)
  • Density, water vapor, at instrument height (1 or 2 m)(surfaceWaterVaporDensity)
  • liquidWaterContentRmsError
  • blackbodyTemperature
  • Height, level of free convection(levelFreeConvection)
  • Retrieved dewpoint temperature(dewpointTemperature)
  • lon
  • time
  • temperatureRmsError
  • Retrieved water vapor mixing ratio(waterVaporMixingRatio)
  • Air temperature(temperature)
  • time_offset
  • Microwave brightness temperature(brightnessTemperature)
  • Height, lifting condensation level(liftingCondensationLevel)
  • Height, cloud base, height where IR temp. matches retrieved temp. profile(cloudBaseHeight)
  • Humidity, relative, prof. from sfc.-10km, from water vap. dens. and temp. prof.(relativeHumidity)
  • Height, equilibrium level(equilibriumLevel)
  • Barometric pressure(pressure)
  • Pressure, barometric. at instrument height (1 or 2 m)(surfacePressure)
  • Liquid water path, from brightness temperatures using statistical retrieval(liquidWaterPath)
  • Pressure, associated geometric height, at altitude, NGM model output(height)
  • lat
  • liquidWaterPathRmsError
  • Pressure, equilibrium level(equilibriumLevelPres)
  • totalPrecipitableWater2RmsError
  • waterVaporDensityRmsError
  • infraredTemperature
  • dataQualityFlags
  • Pressure, level of free convection(levelFreeConvectionPres)
  • Energy, potential, convective, available, from RUC model(cape)
  • liquidWaterPath2RmsError
  • wetWindowFlag

nsa915rwpwindmomC1.a0:
  • Signal to noise ratio(snr)
  • oband
  • bswitch
  • lon
  • beam
  • base_time
  • vband
  • spcavetime
  • pcbits
  • ipp
  • Mean radial beam velocity(mdf)
  • plen
  • nheight
  • alt
  • dly
  • time_offset
  • vsr
  • elevation
  • nspc
  • Spectral width(specw)
  • sitime
  • ncoh
  • tditime
  • range_gate
  • prf
  • noise
  • height_t
  • lat
  • sampr
  • rgl
  • rgs
  • rgf

nsamwrtipC1.a1:
  • tbskytip31
  • tnd23I
  • tbskytip23
  • r31
  • lon
  • r23
  • lat
  • tnd23
  • tnd31
  • wet_window
  • tknd
  • tkxc
  • alt
  • tkbb
  • bb23
  • time_offset
  • bb31
  • tc31
  • base_time
  • tnd31I
  • tc23
  • tnd_nom23
  • tnd_nom31
  • actaz
  • liqtip
  • actel
  • tipsky31
  • tipsky23
  • tkair
  • vaptip
  • bbn31
  • bbn23

nsatwrcam40mC1.a1:
  • JPEG data stream - documentation not yet available


Back To Table of Contents

DQRID : D050202.1
Start DateStart TimeEnd DateEnd Time
02/25/2003204411/18/20042304
Subject:
NSA/MWR/C2 - no air temperature signal
DataStreams:nsamwrlosC2.b1, nsamwrtipC2.a1
Description:
When the new blower was upgraded by Radiometrics and reinstalled on the MWR, the air 
temperature sensor failed to properly report. It was determined that the wires carrying the 
signal to the analog board did not conform to the standard expected by the upgraded blower. 
The problem was corrected by modifying the MWR software to read the signal from the 
appropriate corresponding channel.
Measurements:nsamwrlosC2.b1:
  • tkair

nsamwrtipC2.a1:
  • tkair


Back To Table of Contents

DQRID : D050203.1
Start DateStart TimeEnd DateEnd Time
01/15/2005005401/19/20051143
Subject:
NSA/MWR/C1 - poor air temperature values
DataStreams:nsamwrlosC1.b1, nsamwrtipC1.a1
Description:
After the air temperature sensor was rewired due to a change with the new blower 
(D030515.3), the measurement was initially incorrect. There is no apparent cause for the bad 
signal or its improvement.
Measurements:nsamwrlosC1.b1:
  • tkair

nsamwrtipC1.a1:
  • tkair


Back To Table of Contents

DQRID : D050725.7
Start DateStart TimeEnd DateEnd Time
04/25/2002190006/29/20050000
Subject:
NSA/MWR/C1 - Reprocess: Revised Calibration Coefficients
DataStreams:nsamwrlosC1.a1, nsamwrlosC1.b1, nsamwrtipC1.a1, nsa5mwravgC1.c1, nsaqmemwrcolC1.c1
Description:
IN THE BEGINNING (June 1992), the retrieval coefficients used to derive 
the precipitable water vapor (PWV) and liquid water path (LWP) from the 
MWR brightness temperatures were based on the Liebe and Layton (1987) 
water vapor and oxygen absorption model and the Grant (1957) liquid 
water absorption model.

Following the SHEBA experience, revised retrievals based on the more 
recent Rosenkranz (1998) water vapor and oxygen absorption models and 
the Liebe (1991) liquid waer absorption model were developed.  The 
Rosenkranz water vapor absorption model resulted a 2 percent increase 
in PWV relative to the earlier Liebe and Layton model.  The Liebe 
liquid water absorption model decreased the LWP by 10% relative to the 
Grant model.  However, the increased oxygen absorption caused a 
0.02-0.03 mm (20-30 g/m2) reduction in LWP, which was particularly 
significant for low LWP conditions (i.e. thin clouds encountered at 
SHEBA).

Recently, it has been shown (Liljegren, Boukabara, Cady-Pereira, and 
Clough, TGARS v. 43, pp 1102-1108, 2005) that the half-width of the 
22 GHz water vapor line from the HITRAN compilation, which is 5 percent 
smaller than the Liebe and Dillon (1969) half-width used in Rosenkranz 
(1998), provided a better fit to the microwave brightness temperature 
measurements at 5 frequencies in the range 22-30 GHz, and yielded more 
accurate retrievals. Accordingly, revised MWR retrieval coefficients 
have been developed using MONORTM, which utilizes the HITRAN compilation 
for its spectroscopic parameters.  These new retrievals provide 3 
percent less PWV and 2.6 percent greater LWP than the previous 
retrievals based on Rosenkranz (1998).

Although the MWR data will be reprocessed to apply the new monortm-based 
retrievals, for most purposes it will be sufficient to correct the data 
using the following factors:

PWV_MONORTM = 0.9695 * PWV_ROSENKRANZ
LWP_MONORTM = 1.026  * LWP_ROSENKRANZ

The Rosenkranz-based retrieval coefficients became active at NSA.C1 
20020425.1900.  The MONORTM-based retrieval coefficients became active 
at NSA.C1 20050629.0000.

Note: a reprocessing effort is already underway to apply the 
Rosenkranz-based retrieval coefficients to all MWR prior to April 
2002.  An additional reprocessing task will be undertaken to apply 
the MONORTM retrieval to all MWR data when the first is completed. 
Read reprocessing comments in the netcdf file header carefully to 
ensure you are aware which retrieval is in play.
Measurements:nsa5mwravgC1.c1:
  • Total water vapor along LOS path(vap)
  • Total liquid water along LOS path(liq)

nsamwrlosC1.a1:
  • Total liquid water along LOS path(liq)
  • Total water vapor along LOS path(vap)

nsamwrlosC1.b1:
  • Total water vapor along LOS path(vap)
  • Total liquid water along LOS path(liq)

nsaqmemwrcolC1.c1:
  • mean_liq_mwr
  • mean_vap_mwr

nsamwrtipC1.a1:
  • vaptip
  • liqtip


Back To Table of Contents

DQRID : D050725.8
Start DateStart TimeEnd DateEnd Time
10/18/1999000006/29/20050000
Subject:
NSA/MWR/C2 - Reprocessed: Revised Retrieval Coefficients
DataStreams:nsamwrlosC2.b1, nsamwrtipC2.a1
Description:
IN THE BEGINNING (June 1992), the retrieval coefficients used to derive 
the precipitable water vapor (PWV) and liquid water path (LWP) from the 
MWR brightness temperatures were based on the Liebe and Layton (1987) 
water vapor and oxygen absorption model and the Grant (1957) liquid 
water absorption model.

Following the SHEBA experience, revised retrievals based on the more 
recent Rosenkranz (1998) water vapor and oxygen absorption models and 
the Liebe (1991) liquid water absorption model were developed.  The 
Rosenkranz water vapor absorption model resulted a 2 percent increase 
in PWV relative to the earlier Liebe and Layton model.	The Liebe 
liquid water absorption model decreased the LWP by 10% relative to the 
Grant model.  However, the increased oxygen absorption caused a 
0.02-0.03 mm (20-30 g/m2) reduction in LWP, which was particularly 
significant for low LWP conditions (i.e. thin clouds encountered at 
SHEBA).

Recently, it has been shown (Liljegren, Boukabara, Cady-Pereira, and 
Clough, TGARS v. 43, pp 1102-1108, 2005) that the half-width of the 
22 GHz water vapor line from the HITRAN compilation, which is 5 percent 
smaller than the Liebe and Dillon (1969) half-width used in Rosenkranz 
(1998), provided a better fit to the microwave brightness temperature 
measurements at 5 frequencies in the range 22-30 GHz, and yielded more 
accurate retrievals. Accordingly, revised MWR retrieval coefficients 
have been developed using MONORTM, which utilizes the HITRAN compilation 
for its spectroscopic parameters.  These new retrievals provide 3 
percent less PWV and 2.6 percent greater LWP than the previous 
retrievals based on Rosenkranz (1998).

The Rosenkranz-based retrieval coefficients became active at NSA.C2
20020418.1700.	The MONORTM-based retrieval coefficients became active 
at NSA.C2 20050629.0000.

Note: The NSA.C2 MWRLOS data for 19991018-20050630 have been reprocessed
to apply the MONORTM-based retrievals for all time. The reprocessed data
were archived in March 2007.  The TIP data have not been reprocessed.
Measurements:nsamwrlosC2.b1:
  • Total liquid water along LOS path(liq)
  • Total water vapor along LOS path(vap)

nsamwrtipC2.a1:
  • vaptip
  • liqtip


Back To Table of Contents

DQRID : D050809.2
Start DateStart TimeEnd DateEnd Time
07/09/2005235407/20/20050000
Subject:
NSA/MWR/C1 - Possible loss of accuracy due to missing blower
DataStreams:nsamwrlosC1.b1, nsamwrtipC1.a1
Description:
On 7/09 the MWR blower failed. The blower prevents snow and liquid drop from accumulating 
on the window. Accumulation of snow or liquid results in a loss of accuracy of the 
instrument. The loss of accuracy has consequencies on the retrieved liquid water path and 
precipitable water vapor. Usually there will be an overestimation of liquid and vapor. The 
blower was repaired and reinstalled on 7/20. Between 7/9 and 7/20 the tkair variable is 
unavailable as well.
Measurements:nsamwrlosC1.b1:
  • 31.4 GHz sky brightness temperature(tbsky31)
  • Total liquid water along LOS path(liq)
  • Radiation, longwave, brightness temperature, 23.8 GHz(tbsky23)
  • sky31
  • sky23
  • Total water vapor along LOS path(vap)
  • wet_window
  • tkair

nsamwrtipC1.a1:
  • vaptip
  • tipsky31
  • tipsky23
  • liqtip
  • wet_window
  • tbskytip31
  • tkair
  • tbskytip23


Back To Table of Contents

DQRID : D050830.1
Start DateStart TimeEnd DateEnd Time
08/12/2005120008/16/20052300
Subject:
NSA/MWR/C2 - Thermally unstable
DataStreams:nsamwrlosC2.b1, nsamwrtipC2.a1
Description:
Between 08/12 and 08/17 the instrument displayed some intermittent thermal instability. 
Measurement accuracy may be degraded during these time periods.

Periods of thermal instability may be identified by checking the black body temperature 
Tkbb. If Tkbb > 303K (30 C) the instrument is unstable.
Measurements:nsamwrlosC2.b1:
  • Total liquid water along LOS path(liq)
  • 31.4 GHz sky brightness temperature(tbsky31)
  • Radiation, longwave, brightness temperature, 23.8 GHz(tbsky23)
  • Total water vapor along LOS path(vap)

nsamwrtipC2.a1:
  • vaptip
  • tbskytip23
  • liqtip
  • tbskytip31


Back To Table of Contents

DQRID : D050920.2
Start DateStart TimeEnd DateEnd Time
09/13/2005000010/18/20052000
Subject:
NSA/MWR/C1 - Instrument problem, Heater problem
DataStreams:nsamwrC1.00, nsamwrlosC1.b1
Description:
The heater of the MWR was ON all the time even when the moisture sensor was dry. Jim 
Liljegren suspected a problem with the relay that activates the heater. The suggested action 
was to send the faulty assembly to SGP for repair and get a spare unit from SGP.
The spare unit was sent on 9/15 and was installed on 10/18.
Measurements:nsamwrlosC1.b1:
  • 31.4 GHz sky brightness temperature(tbsky31)
  • lon
  • tnd23
  • tknd
  • tnd_nom23
  • bb31
  • IR Brightness Temperature(sky_ir_temp)
  • sky23
  • tkxc
  • Total water vapor along LOS path(vap)
  • alt
  • tkbb
  • time_offset
  • wet_window
  • bbn23
  • tkair
  • base_time
  • lat
  • Total liquid water along LOS path(liq)
  • Radiation, longwave, brightness temperature, 23.8 GHz(tbsky23)
  • tnd31
  • bb23
  • tc23
  • sky31
  • tnd_nom31
  • actel
  • tc31
  • actaz
  • Temperature, brightness, longwave(ir_temp)
  • bbn31

nsamwrC1.00:
  • Raw data stream - documentation not supported


Back To Table of Contents

DQRID : D050928.3
Start DateStart TimeEnd DateEnd Time
09/16/2002182009/15/20051702
Subject:
NSA/MWR/C1 - New software version (4.15) installed
DataStreams:nsamwrlosC1.b1, nsamwrtipC1.a1
Description:
A problem began with the installation of MWR.EXE version 4.12 in September 2002. The 
software had been upgraded from a "DOS" to a "Windows"-compiled program to address an earlier 
problem.  The software upgrade corrected the earlier problem but introduced a new one 
that caused line-of-sight observing cycles to be skipped, a 15% reduction in the number of 
tip curves, and saturation of CPU usage.  Software versions 4.13 and 4.14 also produced 
these problems.

The new MWR software version (4.15) was installed on 9/15/2005. As a consequence of this 
upgrade, the tip curve frequency increased. The tip cycle time decreased from ~60s to ~50s.
Measurements:nsamwrlosC1.b1:
  • 31.4 GHz sky brightness temperature(tbsky31)
  • tnd23
  • tknd
  • tnd_nom23
  • bb31
  • IR Brightness Temperature(sky_ir_temp)
  • sky23
  • tkxc
  • Total water vapor along LOS path(vap)
  • tkbb
  • bbn23
  • tkair
  • Total liquid water along LOS path(liq)
  • Radiation, longwave, brightness temperature, 23.8 GHz(tbsky23)
  • tnd31
  • bb23
  • tc23
  • sky31
  • tnd_nom31
  • tc31
  • Temperature, brightness, longwave(ir_temp)
  • bbn31

nsamwrtipC1.a1:
  • tnd23
  • tkxc
  • tnd_nom23
  • bb31
  • tc31
  • tnd31I
  • liqtip
  • tkbb
  • bbn31
  • tbskytip31
  • r31
  • tkair
  • vaptip
  • bb23
  • tnd_nom31
  • tnd23I
  • tipsky31
  • tknd
  • tc23
  • tipsky23
  • r23
  • tbskytip23
  • bbn23
  • tnd31


Back To Table of Contents

DQRID : D050928.4
Start DateStart TimeEnd DateEnd Time
09/20/2002025109/15/20051722
Subject:
NSA/MWR/C2 - New software version (4.15) installed
DataStreams:nsamwrlosC2.b1, nsamwrtipC2.a1
Description:
A problem began with the installation of MWR.EXE version 4.12 in September 2002. The 
software had been upgraded from a "DOS" to a "Windows"-compiled program to address an earlier 
problem.  The software upgrade corrected the earlier problem but introduced a new one 
that caused line-of-sight observing cycles to be skipped, a 15% reduction in the number of 
tip curves, and saturation of CPU usage.  Software versions 4.13 and 4.14 also produced 
these problems.

The new MWR software version (4.15) was installed on 9/15/2005. As a consequence of this 
upgrade, the tip curve frequency increased. The tip cycle time decreased from ~60s to ~50s.
Measurements:nsamwrlosC2.b1:
  • Temperature, brightness, longwave(ir_temp)
  • tkxc
  • tc31
  • bbn31
  • tnd_nom23
  • tc23
  • bb23
  • IR Brightness Temperature(sky_ir_temp)
  • sky31
  • tnd31
  • tkair
  • sky23
  • Radiation, longwave, brightness temperature, 23.8 GHz(tbsky23)
  • Total water vapor along LOS path(vap)
  • tkbb
  • Total liquid water along LOS path(liq)
  • tknd
  • 31.4 GHz sky brightness temperature(tbsky31)
  • bbn23
  • bb31
  • tnd_nom31
  • tnd23

nsamwrtipC2.a1:
  • bbn31
  • tkbb
  • tipsky23
  • tbskytip31
  • tnd23I
  • vaptip
  • tnd31
  • tnd_nom23
  • tnd31I
  • r31
  • liqtip
  • bb31
  • tc23
  • tipsky31
  • tbskytip23
  • tkair
  • bbn23
  • tnd_nom31
  • r23
  • tknd
  • tkxc
  • bb23
  • tc31
  • tnd23


Back To Table of Contents

DQRID : D050930.1
Start DateStart TimeEnd DateEnd Time
09/01/2005194509/06/20051500
Subject:
NSA/MWR/C1 - Reprocess: wrong calibration
DataStreams:nsamwrlosC1.a1, nsamwrlosC1.b1, nsamwrtipC1.a1
Description:
When MWR#20 was returned to service on 9/1/2005, the calibration had changed as a result 
of the repairs made by Radiometrics and the RF deck temperature had been set to 325K for 
testing. On 9/2, the temperature was decreased to 307K to prevent thermal instability in 
winter and the calibration was changed in the configuration file with the values supplied 
on the repair report.  

The data need to be reprocessed with the calibration coefficients that were automatically 
derived after these changes were put into affect. They are: tnd_nom23=185.621, 
tnd_nom31=158.801, tc23=-0.022, tc31=-0.039.
Measurements:nsamwrlosC1.a1:
  • 31.4 GHz sky brightness temperature(tbsky31)
  • Total liquid water along LOS path(liq)
  • Total water vapor along LOS path(vap)
  • Radiation, longwave, brightness temperature, 23.8 GHz(tbsky23)

nsamwrlosC1.b1:
  • 31.4 GHz sky brightness temperature(tbsky31)
  • Total water vapor along LOS path(vap)
  • Total liquid water along LOS path(liq)
  • Radiation, longwave, brightness temperature, 23.8 GHz(tbsky23)

nsamwrtipC1.a1:
  • vaptip
  • liqtip
  • tbskytip31
  • tbskytip23


Back To Table of Contents

DQRID : D051020.1
Start DateStart TimeEnd DateEnd Time
09/27/2005220009/30/20052000
Subject:
NSA/MWR/C1 -  Incorrect time stamp
DataStreams:nsamwrC1.00, nsamwrlosC1.b1
Description:
On Sept 27 the motherboard of the MWR computer was replaced. Following the replacement, 
the date on the computer was not set to the correct time of day, therefore the date and 
time in the files were wrong. The time on the computer was reset on Sept. 30. Time stamps 
between Sept. 27 and Sept. 30 were later corrected based on gathered information, however 
they may have as much as 5 minutes of uncertainty.
Measurements:nsamwrlosC1.b1:
  • 31.4 GHz sky brightness temperature(tbsky31)
  • lon
  • tnd23
  • tknd
  • tnd_nom23
  • bb31
  • IR Brightness Temperature(sky_ir_temp)
  • sky23
  • tkxc
  • Total water vapor along LOS path(vap)
  • alt
  • tkbb
  • time_offset
  • wet_window
  • bbn23
  • tkair
  • base_time
  • lat
  • Total liquid water along LOS path(liq)
  • Radiation, longwave, brightness temperature, 23.8 GHz(tbsky23)
  • tnd31
  • bb23
  • tc23
  • sky31
  • tnd_nom31
  • actel
  • tc31
  • actaz
  • Temperature, brightness, longwave(ir_temp)
  • bbn31

nsamwrC1.00:
  • Raw data stream - documentation not supported


Back To Table of Contents

DQRID : D060223.1
Start DateStart TimeEnd DateEnd Time
02/22/2006000002/24/20062359
Subject:
NSA/MWR/C2 - Frosting/Condensation
DataStreams:nsamwrC2.00, nsamwrlosC2.b1, nsamwrtipC2.a1
Description:
Doug reported freezing winds and ice accumulation on the MWR cover and radome. This may 
affect data quality and calibration. 
On 2/24 Doug attempted to slowly thaw the cover and clear the window.
From 2/22 to 2/24 the LWP and PWV reported by the MWR are near zero. These data are 
probably affected by the frost accumulated on the radiometer window.
Measurements:nsamwrlosC2.b1:
  • sky23
  • tc31
  • Radiation, longwave, brightness temperature, 23.8 GHz(tbsky23)
  • Total water vapor along LOS path(vap)
  • Total liquid water along LOS path(liq)
  • 31.4 GHz sky brightness temperature(tbsky31)
  • tc23
  • lon
  • sky31

nsamwrtipC2.a1:
  • tipsky23
  • tipsky31
  • tbskytip23
  • tbskytip31
  • tnd23I
  • tnd_nom31
  • tnd31
  • vaptip
  • tnd_nom23
  • tnd31I
  • liqtip
  • tnd23

nsamwrC2.00:
  • Raw data stream - documentation not supported


Back To Table of Contents

DQRID : D060420.8
Start DateStart TimeEnd DateEnd Time
01/02/1998000002/03/19991200
Subject:
NSA/MWR/C1 - software upgrade (version 3.28)
DataStreams:nsamwrlosC1.a1, nsamwrlosC1.b1
Description:
The MWR operating program was upgraded to version 3.28 on 3 February 1999. This version 
includes a beam width correction as well as providing the capability to automatically level 
the elevation mirror (that is, to automatically detect and correct offsets in the 
elevation angle stepper motor position.)

The improvement in the quality of the tip curves resulting from the auto-
leveling has been dramatic: differences in the brightness temperatures at
3 airmasses (19.5 and 160.5 degrees) have been reduced from +/- 5 K to
+/- 0.5 K.  In order to take full advantage of this improvement to detect and reject 
cloudy tip curves, the minimum value of the goodness-of-fit coefficient for a valid tip curve 
has been increased from 0.995 to 0.998.
Measurements:nsamwrlosC1.a1:
  • 31.4 GHz sky brightness temperature(tbsky31)
  • Total liquid water along LOS path(liq)
  • Total water vapor along LOS path(vap)
  • Radiation, longwave, brightness temperature, 23.8 GHz(tbsky23)

nsamwrlosC1.b1:
  • 31.4 GHz sky brightness temperature(tbsky31)
  • Total water vapor along LOS path(vap)
  • Total liquid water along LOS path(liq)
  • Radiation, longwave, brightness temperature, 23.8 GHz(tbsky23)


Back To Table of Contents

DQRID : D060717.4
Start DateStart TimeEnd DateEnd Time
07/14/2006000007/28/20060000
Subject:
NSA/MWR/C1 - TKAIR sensor failure
DataStreams:nsamwrlosC1.b1
Description:
Between 7/14 and 7/28 the tkair variable is missing most of the time and sometimes has 
large negative spikes.  On 7/28, the sensor was cleaned of corrosion and the readings came 
back to normal.
Measurements:nsamwrlosC1.b1:
  • tkair


Back To Table of Contents

DQRID : D060818.12
Start DateStart TimeEnd DateEnd Time
06/17/2006000008/01/20062359
Subject:
NSA/MWR/C2 - Spikes in air temperature readings
DataStreams:nsamwrlosC2.b1
Description:
The tkair variable has occasional spikes due to sensor corrosion. On 8/1, the temperature 
sensor was replaced.
Measurements:nsamwrlosC2.b1:
  • tkair


Back To Table of Contents

DQRID : D061114.1
Start DateStart TimeEnd DateEnd Time
10/05/2006110010/23/20061600
Subject:
NSA/MWR/C1 - Rain sensor always on
DataStreams:nsamwrlosC1.b1, nsamwrtipC1.a1
Description:
The rain sensor was always on between 10/5 and 10/23 2006.
The user should be aware that not all data flagged as rainy are actually rainy. The 
problem was caused by a shift in the sensitivity of the rain sensor and was corrected by 
changing the sensor threshold in the configuration file.
Measurements:nsamwrlosC1.b1:
  • wet_window

nsamwrtipC1.a1:
  • wet_window


Back To Table of Contents

DQRID : D080512.1
Start DateStart TimeEnd DateEnd Time
04/02/2008000006/04/20082200
Subject:
NSA/MWR/C1 - Spikes in air temperature readings
DataStreams:nsamwrlosC1.b1, nsamwrtipC1.a1
Description:
During this month there are occasional negative spikes in the Tkair variable. The problem 
may be corrosion in the temperature sensor or the infiltration of water from melting snow.
The dewblower was replaced and a new sensor installed
Measurements:nsamwrlosC1.b1:
  • tkair

nsamwrtipC1.a1:
  • tkair


Back To Table of Contents

DQRID : D080512.2
Start DateStart TimeEnd DateEnd Time
04/15/2008150011/16/20091600
Subject:
NSA/MWR/C2 - Possible bias on measurements
DataStreams:nsamwrlosC2.b1, nsamwrtipC2.a1
Description:
This instrument was refurbished at the the vendor's facility in 2008 and then sent to the 
SGP for side-by-side comparison with another MWR. During the time the instrument was at 
the SGP, it was noticed that the 23.8-GHz measurements were slightly warmer than those 
from radiometer SN10 operating at the SGP Central Facility. A comparison with radiosonde 
measurements confirmed the slight change in the measurements.

An explanation of the bias and comparison with radiosonde measurements and radiometer SN 
10 is given in the mentor's monthly data  review  for the month of April 2008.

Since there aren't radiosondes at NSA.C2, it is difficult to work around this problem. 
Based on comparison at the SGP, the bias in the 23.8-GHz channel was quantified to be ~1.5 
K. Users can attempt to subtract this amount from the 23.8-GHz measurements. 
Alternatively, use the retrieved PWV and LWV keeping in mind that there is a possible overestimation 
of PWV of ~1 mm.

On 11/16/2009 after a hardware failure of the radiometer a spare radiometer (SN15) was 
installed at the site.
Measurements:nsamwrlosC2.b1:
  • Radiation, longwave, brightness temperature, 23.8 GHz(tbsky23)

nsamwrtipC2.a1:
  • tbskytip23


Back To Table of Contents

DQRID : D080623.1
Start DateStart TimeEnd DateEnd Time
04/06/2008220006/20/20080200
Subject:
NSA/MWR/C1 - Missing surface air temperature data
DataStreams:nsamwrlosC1.b1, nsamwrtipC1.a1
Description:
Some wires in the dewblower were not correctly configured.
Measurements:nsamwrlosC1.b1:
  • tkair

nsamwrtipC1.a1:
  • tkair


Back To Table of Contents

DQRID : D080811.1
Start DateStart TimeEnd DateEnd Time
07/01/2008000007/15/20080000
Subject:
NSA/MWR/C2 - Occasional thermal instability
DataStreams:nsamwrlosC2.b1, nsamwrtipC2.a1, nsa5mwravgC2.c1
Description:
Between 7/1 and 7/15 the radiometer experienced a few days of thermal instability. From a 
review of the data it doesn't appear that the instability has had any major effect. It is 
not possible to quantify in detail the effect of the instability due to the lack of 
radiosonde sounding,  however users are cautioned that a higher uncertainty may be affecting 
these data.
Measurements:nsamwrlosC2.b1:
  • tc31
  • Radiation, longwave, brightness temperature, 23.8 GHz(tbsky23)
  • Total water vapor along LOS path(vap)
  • Total liquid water along LOS path(liq)
  • 31.4 GHz sky brightness temperature(tbsky31)
  • tnd_nom23
  • tc23
  • tnd_nom31

nsamwrtipC2.a1:
  • tc23
  • tbskytip23
  • tbskytip31
  • tnd_nom31
  • tnd31
  • vaptip
  • tnd_nom23
  • tc31
  • liqtip
  • tnd23

nsa5mwravgC2.c1:
  • Radiation, longwave, brightness temperature, 23.8 GHz(tbsky23)
  • Total water vapor along LOS path(vap)
  • Total liquid water along LOS path(liq)
  • 31.4 GHz sky brightness temperature(tbsky31)


Back To Table of Contents

DQRID : D090114.2
Start DateStart TimeEnd DateEnd Time
12/09/2008000012/09/20081800
Subject:
NSA/MWR/C1 - Incorrect brightness temperatures and retrievals
DataStreams:nsamwrlosC1.b1, nsamwrtipC1.a1, nsa5mwravgC1.c1
Description:
The brightness temperatures and retrieved PWV and LWP show a sudden jump and have values 
that are too high. The suddenly jump back to normal at around 1800 UTC. All other 
parameters seem reasonable so the cause of the jump may just be due to accumulation of either 
snow or melting ice on the radome.
Measurements:nsa5mwravgC1.c1:
  • Total water vapor along LOS path(vap)
  • Total liquid water along LOS path(liq)
  • Radiation, longwave, brightness temperature, 23.8 GHz(tbsky23)
  • 31.4 GHz sky brightness temperature(tbsky31)

nsamwrlosC1.b1:
  • 31.4 GHz sky brightness temperature(tbsky31)
  • Total liquid water along LOS path(liq)
  • Radiation, longwave, brightness temperature, 23.8 GHz(tbsky23)
  • Total water vapor along LOS path(vap)
  • tkair

nsamwrtipC1.a1:
  • vaptip
  • liqtip
  • tbskytip31
  • tkair
  • tbskytip23


Back To Table of Contents

DQRID : D090417.1
Start DateStart TimeEnd DateEnd Time
04/15/2009210004/15/20092300
04/16/2009171504/16/20092200
Subject:
NSA/MWR/C1 - RFI screening test
DataStreams:nsamwrlosC1.b1, nsamwrtipC1.a1
Description:
The instrument was covered with a shield to test the effect on the RF interference that is 
affecting the measurements since February. The test was performed on 4/15 and 4/16 for a 
few hours.
Measurements:nsamwrlosC1.b1:
  • 31.4 GHz sky brightness temperature(tbsky31)
  • IR Brightness Temperature(sky_ir_temp)
  • sky23
  • tkxc
  • Total water vapor along LOS path(vap)
  • tkbb
  • bbn23
  • tkair
  • bb23
  • sky31
  • tnd_nom31
  • Temperature, brightness, longwave(ir_temp)
  • bbn31
  • tnd23
  • tknd
  • tnd_nom23
  • bb31
  • wet_window
  • Total liquid water along LOS path(liq)
  • Radiation, longwave, brightness temperature, 23.8 GHz(tbsky23)
  • tnd31
  • tc23
  • actel
  • tc31
  • actaz

nsamwrtipC1.a1:
  • tnd_nom23
  • bb31
  • tnd31I
  • liqtip
  • wet_window
  • bbn31
  • r31
  • tkair
  • tnd_nom31
  • tknd
  • tc23
  • r23
  • bbn23
  • tkxc
  • tnd23
  • tc31
  • actel
  • tkbb
  • tbskytip31
  • actaz
  • vaptip
  • bb23
  • tnd23I
  • tipsky31
  • tipsky23
  • tbskytip23
  • tnd31


Back To Table of Contents

DQRID : D090417.5
Start DateStart TimeEnd DateEnd Time
02/13/2009000010/15/20091800
Subject:
NSA/MWR/C1 - High noise in 23.8-GHz channel
DataStreams:nsamwrlosC1.b1, nsamwrtipC1.a1
Description:
Starting approximately on February 13 the MWR experienced high level of noise in the 23.8 
GHz channel. The spikes became more prominent around Feb 17 and increased after that date 
as well. The cause of the interference was identified as the nearby MWRP on Oct 13 and 
the instruments were realigned.
Measurements:nsamwrlosC1.b1:
  • sky23
  • Total water vapor along LOS path(vap)
  • Radiation, longwave, brightness temperature, 23.8 GHz(tbsky23)

nsamwrtipC1.a1:
  • vaptip
  • tipsky23
  • tbskytip23


Back To Table of Contents

DQRID : D090611.1
Start DateStart TimeEnd DateEnd Time
05/23/2009000005/26/20091900
Subject:
NSA/MWR/C1 - Intermittent air temperature readings
DataStreams:nsamwrlosC1.b1, nsamwrtipC1.a1
Description:
Starting on 5/23 the air temperature readings (tkair) were intermittent and had negative 
spikes
Measurements:nsamwrlosC1.b1:
  • tkair

nsamwrtipC1.a1:
  • tkair


Back To Table of Contents

DQRID : D090611.2
Start DateStart TimeEnd DateEnd Time
05/26/2009190006/10/20092300
Subject:
NSA/MWR/C1 - Air temperature readings missing
DataStreams:nsamwrlosC1.b1, nsamwrtipC1.a1
Description:
The air temperature readings (tkair) dropped on 5/26. The signal was restored on 6/10.
Measurements:nsamwrlosC1.b1:
  • tkair

nsamwrtipC1.a1:
  • tkair


Back To Table of Contents

DQRID : D100224.5
Start DateStart TimeEnd DateEnd Time
01/06/2010000001/14/20102300
Subject:
NSA/MWR/C2 - Radiometer unstable
DataStreams:nsamwrlosC2.b1, nsamwrtipC2.a1
Description:
The radiometer had problems maintaining the thermal stabilization between 1/6 and 1/14.
Measurements:nsamwrlosC2.b1:
  • tkxc
  • Radiation, longwave, brightness temperature, 23.8 GHz(tbsky23)
  • Total water vapor along LOS path(vap)
  • Total liquid water along LOS path(liq)
  • 31.4 GHz sky brightness temperature(tbsky31)
  • tnd23
  • tnd31

nsamwrtipC2.a1:
  • tbskytip23
  • tbskytip31
  • tnd23I
  • tnd31
  • vaptip
  • tkxc
  • tnd31I
  • liqtip
  • tnd23


Back To Table of Contents

DQRID : D100326.1
Start DateStart TimeEnd DateEnd Time
02/10/2010000002/20/20102359
Subject:
NSA/MWR/C1 - Elevated noise
DataStreams:nsamwrlosC1.b1, nsamwrtipC1.a1
Description:
The data have high noise levels.
Measurements:nsamwrlosC1.b1:
  • 31.4 GHz sky brightness temperature(tbsky31)
  • sky23
  • Total water vapor along LOS path(vap)
  • Radiation, longwave, brightness temperature, 23.8 GHz(tbsky23)
  • sky31

nsamwrtipC1.a1:
  • vaptip
  • tipsky23
  • tipsky31
  • tbskytip31
  • tbskytip23


Back To Table of Contents

DQRID : D100830.2
Start DateStart TimeEnd DateEnd Time
07/09/2010000007/12/20102300
07/28/2010000007/30/20102359
Subject:
NSA/MWR/C2 - Temperature instability
DataStreams:nsamwrlosC2.b1, nsamwrtipC2.a1
Description:
There was some temperature instability that could affect the calibration. Although the 
instability was brief users may find increased noise in the data or a slight deterioration 
of calibration accuracy during the indicated times.
Measurements:nsamwrlosC2.b1:
  • tc31
  • Radiation, longwave, brightness temperature, 23.8 GHz(tbsky23)
  • Total water vapor along LOS path(vap)
  • Total liquid water along LOS path(liq)
  • 31.4 GHz sky brightness temperature(tbsky31)
  • tnd_nom23
  • tc23
  • tnd_nom31
  • tnd23
  • tnd31

nsamwrtipC2.a1:
  • tc23
  • tbskytip23
  • tbskytip31
  • tnd23I
  • tnd_nom31
  • vaptip
  • tnd31
  • tnd_nom23
  • r23
  • tnd31I
  • r31
  • tc31
  • liqtip
  • tnd23


Back To Table of Contents

DQRID : D101025.1
Start DateStart TimeEnd DateEnd Time
02/08/1998145902/11/19982254
02/13/1998135902/22/19982022
03/06/1998184603/14/19980200
03/15/1998232203/19/19980053
04/24/1998183804/29/19982340
05/03/1998120305/11/19982137
05/30/1998184006/01/19981858
06/09/1998233806/16/19982243
07/13/1998010307/16/19981816
07/18/1998190407/27/19982133
07/29/1998082808/03/19981901
08/05/1998002809/24/19982042
09/24/1998221011/11/19981830
11/11/1998183111/18/19981929
01/02/1999094701/04/19991756
10/11/1999235910/13/19992200
11/17/1999004311/19/19990033
01/28/2000192901/31/20001754
12/22/2000230001/09/20012233
03/28/2001235904/01/20010001
08/09/2001000008/13/20010000
08/15/2001000008/20/20010000
12/30/2001235901/01/20020000
02/14/2002215902/25/20022009
02/27/2002070003/02/20020100
04/25/2002185505/08/20022138
05/08/2002214405/23/20021925
08/19/2002165608/21/20021925
12/05/2002225312/08/20022120
06/29/2003163007/01/20032233
08/09/2003045908/11/20031807
02/10/2004084502/17/20040156
07/10/2004225507/12/20041918
08/05/2005195209/01/20051945
09/22/2005054509/27/20052357
02/25/2006081102/27/20061827
09/17/2009224109/20/20091734
09/27/2010025410/01/20101924
04/27/2011180005/03/20111900
05/22/2011170005/24/20110000
Subject:
NSA/MWR/C1 - Missing data
DataStreams:nsamwrlosC1.b1, nsamwrtipC1.a1
Description:
Data are missing and unrecoverable.
Measurements:nsamwrlosC1.b1:
  • 31.4 GHz sky brightness temperature(tbsky31)
  • IR Brightness Temperature(sky_ir_temp)
  • sky23
  • tkxc
  • Total water vapor along LOS path(vap)
  • alt
  • tkbb
  • bbn23
  • base_time
  • tkair
  • bb23
  • sky31
  • tnd_nom31
  • Temperature, brightness, longwave(ir_temp)
  • bbn31
  • lon
  • tnd23
  • tknd
  • tnd_nom23
  • bb31
  • time_offset
  • wet_window
  • lat
  • Total liquid water along LOS path(liq)
  • Radiation, longwave, brightness temperature, 23.8 GHz(tbsky23)
  • tnd31
  • tc23
  • actel
  • tc31
  • actaz

nsamwrtipC1.a1:
  • lat
  • tnd_nom23
  • bb31
  • tnd31I
  • liqtip
  • wet_window
  • bbn31
  • r31
  • tkair
  • tnd_nom31
  • tknd
  • lon
  • tc23
  • r23
  • bbn23
  • tkxc
  • tnd23
  • tc31
  • actel
  • tkbb
  • alt
  • tbskytip31
  • actaz
  • vaptip
  • bb23
  • tnd23I
  • tipsky31
  • time_offset
  • tipsky23
  • base_time
  • tbskytip23
  • tnd31


Back To Table of Contents

DQRID : D990106.3
Start DateStart TimeEnd DateEnd Time
03/19/1998005311/16/19981800
Subject:
NSA/MWR/C1 - Software Change
DataStreams:nsamwrlosC1.a1, nsamwrlosC1.b1, nsamwrtipC1.a1
Description:
The MWR operating software was changed on 16 November 1998 to provide additional 
functionality as described below. This change affects the format of the raw and ingested data. 
   
NEW FEATURES
1. Faster sampling rate
   
Standard line-of-sight (LOS) observations can now be acquired at 15-second intervals vs. 
20-second intervals previously. (The standard LOS cycle is comprised of one sky sample per 
blackbody sample and gain update.)
   
2. More flexible sampling strategy
   
Multiple sky observations can be acquired during a LOS cycle, up to 1024 per gain update. 
This permits sky samples to be acquired at intervals of 2.67 seconds for improved 
temporal resolution of cloud liquid water variations and better coordination with the millimeter 
cloud radar during IOPs.
   
3. Separation of zenith LOS observations from TIP data
   
When the radiometer is in TIP mode, the zenith LOS observations are now extracted, the PWV 
and LWP computed and reported separately in the output file. This eliminates the periods 
of missing LOS data during calibration checks/updates.
   
4. Automatic self-calibration
   
The software now permits the calibration to be updated at specified intervals or 
continuously. In the first case, LOS mode is automatically changed to TIP mode at user-specified 
intervals or whenever clear sky conditions occur, the tip data reduced, the calibration 
updated, and the radiometer returned to LOS mode without operator intervention. In the 
second case, the radiometer is continuously is TIP mode until changed by the operator.
   
5. Graphical user display
   
The graphical display is comprised of a status display, a message display, a temperature 
plot, a plot of the retrieved PWV and LWP, and (in TIP mode) a plot of the latest tip 
curves.
Measurements:nsamwrlosC1.a1:
  • tnd31
  • tnd23
  • tkair
  • tknd

nsamwrlosC1.b1:
  • tnd23
  • tknd
  • tnd31
  • tkair

nsamwrtipC1.a1:
  • tnd23
  • tnd23I
  • tknd
  • tnd31I
  • tkair
  • tnd31


Back To Table of Contents

DQRID : D990114.1
Start DateStart TimeEnd DateEnd Time
04/09/1998050006/09/19982345
Subject:
NSA/MWR/C1 - Spikes in PWV data
DataStreams:nsamwrlosC1.a1, nsamwrlosC1.b1
Description:
The PWV data began exhibiting a pattern of large (~5 cm) spikes which exponetially degrade 
to normal values. The problem is due to a fault in the serial or fiber optic data 
communication. This pattern began intermittent occurrence on 4/9/98 but it dominates the data 
by 5/1/98.
Measurements:nsamwrlosC1.a1:
  • Total water vapor along LOS path(vap)

nsamwrlosC1.b1:
  • Total water vapor along LOS path(vap)


Back To Table of Contents

DQRID : D990114.2
Start DateStart TimeEnd DateEnd Time
08/15/1998190011/21/19981825
Subject:
NSA/MWR/C1 - Spikes in PWV data
DataStreams:nsamwrlosC1.a1, nsamwrlosC1.b1
Description:
After reinstallation of repaired MWR #20, PWV data began exhibiting a pattern of large (~5 
cm) spikes which exponetially degrade to normal values. The problem was due to a fault 
in the serial or fiber optic data communication.

This pattern began intermittant ocurrance on 8/15/98 but it dominates the data by 9/6/98.
Measurements:nsamwrlosC1.a1:
  • Total liquid water along LOS path(liq)
  • Total water vapor along LOS path(vap)

nsamwrlosC1.b1:
  • Total water vapor along LOS path(vap)
  • Total liquid water along LOS path(liq)


Back To Table of Contents

DQRID : D990114.3
Start DateStart TimeEnd DateEnd Time
06/09/1998234507/07/19981800
Subject:
NSA/MWR/C1 - Reprocess: incorrect calibrations
DataStreams:nsamwrlosC1.00, nsamwrlosC1.a1, nsamwrlosC1.b1
Description:
MWR #17 was placed in service while MWR #20 was being repaired by the manufacturer.  The 
data need to be reprocessed with calibration coefficients appropriate for this instrument.
Measurements:nsamwrlosC1.a1:
  • bb31
  • tnd_nom23
  • time_offset
  • 31.4 GHz sky brightness temperature(tbsky31)
  • tnd23
  • Total liquid water along LOS path(liq)
  • Total water vapor along LOS path(vap)
  • alt
  • bbn31
  • tkair
  • tkxc
  • sky23
  • bb23
  • tkbb
  • sky31
  • tnd31
  • tc23
  • tnd_nom31
  • Radiation, longwave, brightness temperature, 23.8 GHz(tbsky23)
  • Temperature, brightness, longwave(ir_temp)
  • lat
  • tc31
  • base_time
  • bbn23
  • tknd
  • wet_window
  • lon

nsamwrlosC1.b1:
  • 31.4 GHz sky brightness temperature(tbsky31)
  • lon
  • Total water vapor along LOS path(vap)
  • alt
  • time_offset
  • wet_window
  • base_time
  • lat
  • Total liquid water along LOS path(liq)
  • Radiation, longwave, brightness temperature, 23.8 GHz(tbsky23)
  • Temperature, brightness, longwave(ir_temp)

nsamwrlosC1.00:
  • Raw data stream - documentation not supported


Back To Table of Contents



END OF DATA