DQRs for Session: 152848 User:dzhang4Completed: 09-06-2013

Data Quality Reports for Session: 152848 User: dzhang4 Completed: 09/06/2013

TABLE OF CONTENTS

DQR ID	Subject	Data Streams Affected
D030922.3	NSA/MPL/C1 - laser head failure	nsamplC1.00, nsamplC1.a1, nsamplcmask1clothC1.c1, nsamplsmask1clothC1.c1
D040124.1	NSA/MPL/C1 - Laser Q-Switch Problem	nsamplC1.00, nsamplC1.a1, nsamplcmask1clothC1.c1, nsamplpsC1.a0, nsamplsmask1clothC1.c1
D040229.1	NSA/MPL/C1 - Instrument problem	nsamplC1.00, nsamplC1.a1, nsamplpsC1.a0
D040426.3	NSA/MPL/C1 - Hardware Failure/Missing Data	nsamplC1.00, nsamplC1.a1, nsamplcmask1clothC1.c1, nsamplsmask1clothC1.c1
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
D050215.5	NSA/MPL/C1 - MPL clock drift	nsamplC1.a1, nsamplpsC1.a0
D050608.1	NSA/MPL/C1 - Diode failure	nsamplC1.a1, nsamplpsC1.a0

DQRID : D030922.3

Start Date	Start Time	End Date	End Time
04/28/2002	0200	08/29/2002	0100

Subject:	NSA/MPL/C1 - laser head failure
DataStreams:	nsamplC1.00, nsamplC1.a1, nsamplcmask1clothC1.c1, nsamplsmask1clothC1.c1
Description:	On 2002-04-28 the laser energy was observed to decrease throughout the day. Although low clouds continued to be detected, by the end of the day the output laser energy was about 10% of nomimal. This decrease continued throughout 2002-04-29 to the extent that clouds were no longer detected. The source of failure was eventually determined to be the laser head, requiring the MPL to be shipped for repair. The MPL was reinstalled on 2002-08-28 at about 01:00 UTC. MPL NSA data from 2002-04-29 through 2002-08-27 (inclusive) should not be used.
Measurements:	nsamplC1.a1: transceiver_altitude_angle base_time instrument_temp range_bin_time range filter_temp max_altitude time property Preliminary cloud base height(preliminary_cbh) alt scalar_sync_offset laser_scalar_sync_offset voltage_10 voltage_15 range_bin_width Pressure, associated geometric height, at altitude, NGM model output(height) lon range_bins energy_monitor range_offset shots_sum Normalized corrected relative backscatter(backscatter) shots_summed trigger_freq pulse_rep transceiver_azimuth_angle total_counts lat time_offset background_signal laser_temp detector_temp laser_sync_offset deadtime_correction voltage_05 nsamplsmask1clothC1.c1: MPL Cloth et al. Algorithm Significance Mask(SigniMaskMplCloth) Heights time_offset base_time nsamplcmask1clothC1.c1: Heights MPL Cloth et al. Algorithm Cloud Mask(CloudMaskMplCloth) time_offset base_time nsamplC1.00: Raw data stream - documentation not supported

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DQRID : D040124.1

Start Date	Start Time	End Date	End Time
01/19/2004	2252	01/24/2004	0016

Subject:	NSA/MPL/C1 - Laser Q-Switch Problem
DataStreams:	nsamplC1.00, nsamplC1.a1, nsamplcmask1clothC1.c1, nsamplpsC1.a0, nsamplsmask1clothC1.c1
Description:	At about 22:52 UTC on 2004/01/19, the NSA MPL appears to have suffered a temporary failure of the laser Q-Switch. This results in a complete loss of lidar data immediately thereafter. The problem was resolved (at least for the time being) by disconnecting and reconnecting the Q-Switch cable on 2004/01/24 at about 00:16 UTC. Data after this time appears good.
Measurements:	nsamplC1.a1: range_bin_time range max_altitude filter_temp property laser_scalar_sync_offset scalar_sync_offset range_bin_width lon energy_monitor Normalized corrected relative backscatter(backscatter) trigger_freq transceiver_azimuth_angle laser_temp time_offset detector_temp laser_sync_offset deadtime_correction transceiver_altitude_angle base_time instrument_temp time Preliminary cloud base height(preliminary_cbh) alt voltage_10 voltage_15 range_bins Pressure, associated geometric height, at altitude, NGM model output(height) range_offset shots_sum shots_summed pulse_rep total_counts lat background_signal voltage_05 nsamplsmask1clothC1.c1: Heights time_offset base_time MPL Cloth et al. Algorithm Significance Mask(SigniMaskMplCloth) nsamplpsC1.a0: range_bin_time background_signal alt voltage_15 instrument_temp Preliminary cloud base height(preliminary_cbh) max_altitude range_bins detector_counts Pressure, associated geometric height, at altitude, NGM model output(height) time voltage_05 range voltage_10 lon pulse_rep detector_temp filter_temp laser_temp base_time range_bin_width shots_summed time_offset energy_monitor lat range_offset nsamplcmask1clothC1.c1: Heights MPL Cloth et al. Algorithm Cloud Mask(CloudMaskMplCloth) time_offset base_time nsamplC1.00: Raw data stream - documentation not supported

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DQRID : D040229.1

Start Date	Start Time	End Date	End Time
02/18/2004	0830	02/24/2004	0830

Subject:	NSA/MPL/C1 - Instrument problem
DataStreams:	nsamplC1.00, nsamplC1.a1, nsamplpsC1.a0
Description:	On 2/18, the energy monitor on the MPL dropped from 11 microjoules per second to 2 microjoules per second. This severely affected data quality. This appears to be have been an intermittent cable problem for the laser Q-Switch. A new cable was provided and installed on 2-24.
Measurements:	nsamplC1.a1: energy_monitor Normalized corrected relative backscatter(backscatter) nsamplpsC1.a0: energy_monitor nsamplC1.00: Raw data stream - documentation not supported

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DQRID : D040426.3

Start Date	Start Time	End Date	End Time
11/21/2003	0500	12/01/2003	1441

Subject:	NSA/MPL/C1 - Hardware Failure/Missing Data
DataStreams:	nsamplC1.00, nsamplC1.a1, nsamplcmask1clothC1.c1, nsamplsmask1clothC1.c1
Description:	Data are missing during this extended period due to a hardware failure.
Measurements:	nsamplC1.a1: transceiver_altitude_angle base_time instrument_temp range_bin_time range filter_temp max_altitude time property Preliminary cloud base height(preliminary_cbh) alt scalar_sync_offset laser_scalar_sync_offset voltage_10 voltage_15 range_bin_width Pressure, associated geometric height, at altitude, NGM model output(height) lon range_bins energy_monitor range_offset shots_sum Normalized corrected relative backscatter(backscatter) shots_summed trigger_freq pulse_rep transceiver_azimuth_angle total_counts lat time_offset background_signal laser_temp detector_temp laser_sync_offset deadtime_correction voltage_05 nsamplsmask1clothC1.c1: MPL Cloth et al. Algorithm Significance Mask(SigniMaskMplCloth) Heights time_offset base_time nsamplcmask1clothC1.c1: Heights MPL Cloth et al. Algorithm Cloud Mask(CloudMaskMplCloth) time_offset base_time nsamplC1.00: Raw data stream - documentation not supported

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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(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(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 : D050215.5

Start Date	Start Time	End Date	End Time
11/11/2003	0000	02/05/2004	0000

Subject:	NSA/MPL/C1 - MPL clock drift
DataStreams:	nsamplC1.a1, nsamplpsC1.a0
Description:	The MPL PC clock was noted to be off (slow) by more than an hour over a several day period. It has previously been noted that the time synchronization program "D-4" fails to update the PC clock under certain circumstances. As a result, the program "D-4" was replaced by "AboutTime" on 2/5/2004. The specifics of this problem are not well understood. It turns out that the instrument has TWO clocks on the instrument computer display - one being displayed by the MPL software and the other being the PC clock displayed in the lower right-hand corner of the screen. The MPL software clock was the one that is noted on daily rounds and was never off by any amount. Apparently the only clock that was off was the computer clock. What is clear is that between the time the MPL computer was installed on 11-11-2003 and the CM log on 1-06-2004 the MPL clock exhibited a discrepancy of over 1 hour and 20 minutes. What is not clear is whether this clock discrepancy was also applied to the data time stamps. Furthermore, seven days later the MPL clock exhibited only a 1.77 second drift. Not exceptional at all, and not in line with the previous discrepancy of more than 4800 seconds over a span of 57 days. Attempts to identify gradual correctible clock drift in the MPL data were not successful. As a worst-case scenario, the MPL data may be inappropriately time-stamped by as much a 1 hour 20 minutes and 41 seconds slow relative to UTC between the dates of 2003-11-11 and 2004-01-06. After this time until 2004-02-05 time synchronization was maintained within a few seconds a day with local observer assistance.
Measurements:	nsamplC1.a1: base_time time_offset time nsamplpsC1.a0: time base_time time_offset

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DQRID : D050608.1

Start Date	Start Time	End Date	End Time
03/25/2005	1600	04/01/2005	2310

Subject:	NSA/MPL/C1 - Diode failure
DataStreams:	nsamplC1.a1, nsamplpsC1.a0
Description:	On 3/25, the energy monitor on the MPL dropped from 11 microjoules per second to 2 microjoules per second. We determined the problem was the diode; it reached the end of its lifetime. A replacement was sent. Data quality returned to normal.
Measurements:	nsamplC1.a1: energy_monitor Normalized corrected relative backscatter(backscatter) nsamplpsC1.a0: energy_monitor

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