DQRs for Session: 152349 User:richardg1Completed: 08-15-2013

Data Quality Reports for Session: 152349 User: richardg1 Completed: 08/15/2013

TABLE OF CONTENTS

DQR ID	Subject	Data Streams Affected
D020509.2	NSA/VCEIL/C1 - Occasional Data Transmission problems	nsavceil25kC1.b1, nsavceil25kC1.a1, nsavceil25kC1.00
D020823.18	NSA/VCEIL/C1 - vceil25K Instrument maintenance	nsavceil25kC1.a1, nsavceil25kC1.b1
D050112.1	NSA/C1 - Site-wide power failure	nsaaerich1C1.b1, nsaaerich2C1.b1, nsaaeriengineerC1.b1, nsaaerisummaryC1.b1, nsa915rwptempconC1.a1, nsa915rwptempmomC1.a0, nsa915rwptempspecC1.a0, nsa915rwpwindconC1.a1, nsa915rwpwindmomC1.a0, nsa915rwpwindspecC1.a0, nsamettwr4hC1.b1, nsammcrmomC1.b1, nsamplC1.a1, nsamplpsC1.a0, nsamwrlosC1.b1, nsamwrtipC1.a1, nsamwrpC1.b1, nsatwrcam40mC1.a1, nsavceil25kC1.b1
D050624.6	NSA/VCEIL/C1 - Reprocess: Intermittent data and clock drift	nsavceil25kC1.b1
D051219.1	NSA/VCEIL/C1 - poor sensitivity at low altitude	nsavceil25kC1.b1
D091210.1	NSA/VCEIL/C1 - Degraded window	nsavceil25kC1.b1
D100125.2	NSA/VCEIL/C1 - Missing data	nsavceil25kC1.b1
D100215.3	NSA/VCEIL/C1/C2 - Reprocess: Incorrect serial_number and sum_backscatter fields	nsavceil25kC1.b1, nsavceil25kC2.b1
D100616.2	NSA/VCEIL/C1 - Small gaps in data	nsavceil25kC1.b1
D100719.1	NSA/VCEIL/C1 - Gaps in data	nsavceil25kC1.b1
D130502.3	NSA/VCEIL/C1 - Reprocess: Time error	nsavceil25kC1.a1, nsavceil25kC1.b1

DQRID : D020509.2

Start Date	Start Time	End Date	End Time
11/06/2000	0000	01/04/2001	0000

Subject:	NSA/VCEIL/C1 - Occasional Data Transmission problems
DataStreams:	nsavceil25kC1.b1, nsavceil25kC1.a1, nsavceil25kC1.00
Description:	During this period, there were occasional data transmission problems that lead to cut-off data packets at times. These disappeared after ceilometer computer were replaced.
Measurements:	nsavceil25kC1.00: Raw data stream - documentation not supported nsavceil25kC1.b1: Lowest cloud base height detected.(first_cbh) filename lat window_contamination laser_pulse_energy laser_temperature Second lowest cloud base height(second_cbh) tilt_angle status_flag lon sum_backscatter background_light status_string detection_status Third cloud base height(third_cbh) alt_highest_signal receiver_sensitivity vertical_visibility measurement_parameters alt time_offset range base_time Normalized corrected relative backscatter(backscatter) nsavceil25kC1.a1: range time_offset lon background_light vertical_visibility laser_temperature status_flag status_string sum_backscatter filename Lowest cloud base height detected.(first_cbh) tilt_angle lat window_contamination detection_status measurement_parameters base_time alt Second lowest cloud base height(second_cbh) alt_highest_signal laser_pulse_energy Normalized corrected relative backscatter(backscatter) receiver_sensitivity Third cloud base height(third_cbh)

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DQRID : D020823.18

Start Date	Start Time	End Date	End Time
09/19/1999	1950	09/19/1999	2030

Subject:	NSA/VCEIL/C1 - vceil25K Instrument maintenance
DataStreams:	nsavceil25kC1.a1, nsavceil25kC1.b1
Description:	The instrument was calibrated during this period. To achieve this, it was pointed in the horizontal direction.
Measurements:	nsavceil25kC1.b1: Third cloud base height(third_cbh) alt_highest_signal receiver_sensitivity Second lowest cloud base height(second_cbh) Lowest cloud base height detected.(first_cbh) vertical_visibility sum_backscatter range Normalized corrected relative backscatter(backscatter) background_light detection_status nsavceil25kC1.a1: Second lowest cloud base height(second_cbh) range detection_status sum_backscatter alt_highest_signal background_light Normalized corrected relative backscatter(backscatter) receiver_sensitivity vertical_visibility Third cloud base height(third_cbh) Lowest cloud base height detected.(first_cbh)

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DQRID : D050112.1

Start Date	Start Time	End Date	End Time
12/13/2004	1000	12/13/2004	2330

Subject:	NSA/C1 - Site-wide power failure
DataStreams:	nsaaerich1C1.b1, nsaaerich2C1.b1, nsaaeriengineerC1.b1, nsaaerisummaryC1.b1, nsa915rwptempconC1.a1, nsa915rwptempmomC1.a0, nsa915rwptempspecC1.a0, nsa915rwpwindconC1.a1, nsa915rwpwindmomC1.a0, nsa915rwpwindspecC1.a0, nsamettwr4hC1.b1, nsammcrmomC1.b1, nsamplC1.a1, nsamplpsC1.a0, nsamwrlosC1.b1, nsamwrtipC1.a1, nsamwrpC1.b1, nsatwrcam40mC1.a1, nsavceil25kC1.b1
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 sceneMirPosEncoderDrift Radiation, longwave, brightness temp, 25 cm-1 spectral avgs, 3.3-5.5 um(SkyBrightnessTempSpectralAveragesCh2) 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 Normalized corrected relative 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 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 HBBmaxTempDiff ABBtempOffset skyViewImaginaryRadiance2510_2515 detectorTemp coadditionsCount calibrationHBBtemp Radiation, longwave, radiance, surface air, mean, 675-680 cm-1(surfaceLayerRadiance675_680) skyViewStdDevRadiance985_990 HBBapexTemp ABBviewStdDevRadiance2295_2300 systemReleaseNumber skyViewStdDevRadiance2510_2515 ABBviewStdDevRadiance985_990 base_time 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 LWresponsivity lon 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 HBBtopTempWeight dateYYMMDD 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 Normalized corrected relative 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 heights NumHeights 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 RH10M_AVG WS10M_U_WVT DP2M_AVG VP2M_AVG VP20M_AVG DP10M_AVG CMHTemp VP20M_STD DP20M_STD WS2M_S_WVT WS2M_U_WVT RefT10m_AVG DP40M_STD WD40M_DU_WVT WS40M_S_WVT time RefT40M_AVG DP10M_STD PWSAlarm WD40M_SDU_WVT alt RefT2M_AVG WS20M_U_WVT SatVPCMH PwCod1hr lon T10M_AVG 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 WD20M_DU_WVT Visibility, 10 minute average(AvgVis10m) CMHDP T20M_AVG T10M_STD CumH2O CumSnow PwCod15mi T20M_STD Volt10M_AVG SonicY_AVG RH40M_AVG WD10M_SDU_WVT WD20M_SDU_WVT Wind direction vector mean(SonicWD_DU_WVT) T40M_AVG WS10M_S_WVT VP10M_AVG InstPwCod Volt40M_AVG WD10M_DU_WVT RH2M_STD Batt_Volt RH2M_AVG WS40M_U_WVT T2M_STD T2M_AVG DP40M_AVG VP2M_STD time_offset Wind speed vector mean(SonicWS_U_WVT) RH20M_STD VP40M_AVG RH20M_AVG WS20M_S_WVT 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

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DQRID : D050624.6

Start Date	Start Time	End Date	End Time
06/16/2005	0000	06/27/2005	2359

Subject:	NSA/VCEIL/C1 - Reprocess: Intermittent data and clock drift
DataStreams:	nsavceil25kC1.b1
Description:	The available processed data for the NSA.C1 VCEIL for the time period indicated are incomplete. The raw data is largely complete but pre-processing is required before these data can be reprocessed to produce a complete netcdf data set. While awaiting the reprocessed data set, the intermittent data are available from the ARM Archive. Users should be aware that the data are additionally compromised by a clock drift of at least 10 minutes, though this likely has little affect on cloud detection results. The clock drift will not be addressed by the reprocessing. Note also, that the clock drift was corrected at the end of the DQR period, but it may have existed before the beginning of the DQR period. The data for this period should be used with caution.
Measurements:	nsavceil25kC1.b1: Third cloud base height(third_cbh) alt_highest_signal receiver_sensitivity laser_temperature Second lowest cloud base height(second_cbh) Lowest cloud base height detected.(first_cbh) filename vertical_visibility tilt_angle time_offset measurement_parameters lat status_flag sum_backscatter lon range base_time alt Normalized corrected relative backscatter(backscatter) status_string background_light window_contamination detection_status laser_pulse_energy

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DQRID : D051219.1

Start Date	Start Time	End Date	End Time
12/27/2005	1930	05/02/2006	0000

Subject:	NSA/VCEIL/C1 - poor sensitivity at low altitude
DataStreams:	nsavceil25kC1.b1
Description:	The ceilometer has an internal amplifier that it sets to low or high depending on prevalant conditions. Normally, the gain is automatically set high during clear skies. It appears that during these times, a slight degradation in either the transmitter or receiver is being amplified and produces a "ripple" at low altitudes in the backscatter plot. Cloud base height detection is not affected.
Measurements:	nsavceil25kC1.b1: receiver_sensitivity Normalized corrected relative backscatter(backscatter)

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DQRID : D091210.1

Start Date	Start Time	End Date	End Time
05/02/2006	0000	12/03/2009	2107

Subject:	NSA/VCEIL/C1 - Degraded window
DataStreams:	nsavceil25kC1.b1
Description:	The ceilometer continuously gave warnings for window contamination because the window had deteriorated. Cloud base height detection did not appear to be significantly affected. The window conditioner was replaced on 8/11/09 but this did not clear the warning. The instrument was replaced.
Measurements:	nsavceil25kC1.b1: Third cloud base height(third_cbh) alt_highest_signal Second lowest cloud base height(second_cbh) status_flag sum_backscatter Lowest cloud base height detected.(first_cbh) Normalized corrected relative backscatter(backscatter) status_string background_light vertical_visibility window_contamination

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DQRID : D100125.2

Start Date	Start Time	End Date	End Time
01/23/2010	0600	01/25/2010	2041

Subject:	NSA/VCEIL/C1 - Missing data
DataStreams:	nsavceil25kC1.b1
Description:	Data are missing and unrecoverable.
Measurements:	nsavceil25kC1.b1: Third cloud base height(third_cbh) alt_highest_signal receiver_sensitivity laser_temperature Second lowest cloud base height(second_cbh) Lowest cloud base height detected.(first_cbh) filename vertical_visibility tilt_angle time_offset measurement_parameters lat status_flag sum_backscatter lon range base_time alt Normalized corrected relative backscatter(backscatter) status_string background_light window_contamination detection_status laser_pulse_energy

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DQRID : D100215.3

Start Date	Start Time	End Date	End Time
08/22/1999	0000	10/31/2009	2359

Subject:	NSA/VCEIL/C1/C2 - Reprocess: Incorrect serial_number and sum_backscatter fields
DataStreams:	nsavceil25kC1.b1, nsavceil25kC2.b1
Description:	Attribute serial_number: In most cases, this field is not representative of the actual serial number of the instrument because the value did not change when an instrument changed locations or was replaced with a spare. Variable sum_backscatter: An out-of-range condition for the "sum of detected and normalized backscatter" was reported as 0 instead of missing (-9999). The valid range is 0 - 0.0999 /srad. This DQR also applies to a1 and b1 level data collected prior to the begin date.
Measurements:	nsavceil25kC2.b1: sum_backscatter nsavceil25kC1.b1: sum_backscatter

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DQRID : D100616.2

Start Date	Start Time	End Date	End Time
12/03/2009	2107	06/15/2010	2143

Subject:	NSA/VCEIL/C1 - Small gaps in data
DataStreams:	nsavceil25kC1.b1
Description:	When the ceilometer was replaced, small gaps in the netCDF files occurred due to the presence of '?' characters in the backscatter and header records of the raw data that could not be ingested. It is unknown whether this was caused by a poor CPU board or incompatibilities with the computer configuration (hyper-threading). The problem was corrected when the instrument and computer were both replaced. During this period, approximately 3% of data are missing each hour due to this problem.
Measurements:	nsavceil25kC1.b1: Third cloud base height(third_cbh) alt_highest_signal laser_temperature receiver_sensitivity Second lowest cloud base height(second_cbh) Lowest cloud base height detected.(first_cbh) vertical_visibility tilt_angle time_offset measurement_parameters status_flag sum_backscatter range base_time Normalized corrected relative backscatter(backscatter) status_string background_light window_contamination detection_status laser_pulse_energy

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DQRID : D100719.1

Start Date	Start Time	End Date	End Time
06/15/2010	2159	06/17/2010	2201

Subject:	NSA/VCEIL/C1 - Gaps in data
DataStreams:	nsavceil25kC1.b1
Description:	When the CT25K ceilometer was replaced with a new CL31, checksum errors began occurring at regular 6-min intervals and several things were done to diagnose the problem, including changing the serial cable and trying different computer types. It was finally corrected by replacing the computer with one in which hyperthreading was disabled by default in the BIOS.
Measurements:	nsavceil25kC1.b1: Third cloud base height(third_cbh) alt_highest_signal laser_temperature receiver_sensitivity Second lowest cloud base height(second_cbh) Lowest cloud base height detected.(first_cbh) vertical_visibility tilt_angle time_offset measurement_parameters status_flag sum_backscatter range base_time Normalized corrected relative backscatter(backscatter) status_string background_light window_contamination detection_status laser_pulse_energy

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DQRID : D130502.3

Start Date	Start Time	End Date	End Time
03/31/2013	0100	04/15/2013	1540

Subject:	NSA/VCEIL/C1 - Reprocess: Time error
DataStreams:	nsavceil25kC1.a1, nsavceil25kC1.b1
Description:	The computer time jumped forward an hour because the time zone was set to "(GMT) Greenwich Mean Time" with "Automatically adjust clock for Daylight Savings Time" selected. The time zone was changed to "(GMT) Coordinated Universal Time" and the clock reset to correct UTC time. Correct time by subtracting 1 hour.
Measurements:	nsavceil25kC1.b1: time_offset nsavceil25kC1.a1: time_offset

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