DQRs for Session: 140536 User:kboydCompleted: 02-10-2012

Data Quality Reports for Session: 140536 User: kboyd Completed: 02/10/2012

TABLE OF CONTENTS

DQR ID	Subject	Data Streams Affected
D100129.1	GRW/AOS/M1 - CPC TEC failure	grwaosM1.a1
D100224.6	GRW/MWR/M1 - Reprocess: Biased LWP retrievals-Updated retrieval coefficients	grwmwrlosM1.b1, grwmwrtipM1.a1
D100402.3	GRW/WACR/M1 - Coherence Filter Contamination	grwwacrM1.b1
D111005.3	GRW/AOS/M1 - CCN signal decline	grwaosccnM1.a1

DQRID : D100129.1

Start Date	Start Time	End Date	End Time
12/19/2009	1844	01/15/2010	1820

Subject:	GRW/AOS/M1 - CPC TEC failure
DataStreams:	grwaosM1.a1
Description:	The thermal electric cooler, which controls the temperature in the Condensation Particle Counter, failed. A new TEC was mailed to GRW. The TEC was replaced and the CPC was working again on Jan. 15th, 2010.
Measurements:	grwaosM1.a1: Condensation Nuclei Concentration Number(N_CPC_1)

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DQRID : D100224.6

Start Date	Start Time	End Date	End Time
05/01/2009	0000	03/31/2010	1700

Subject:	GRW/MWR/M1 - Reprocess: Biased LWP retrievals-Updated retrieval coefficients
DataStreams:	grwmwrlosM1.b1, grwmwrtipM1.a1
Description:	Retrieval coefficients were updated to screen for some bad soundings
Measurements:	grwmwrtipM1.a1: liqtip grwmwrlosM1.b1: Total liquid water along LOS path(liq)

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DQRID : D100402.3

Start Date	Start Time	End Date	End Time
06/09/2009	1600	04/02/2010	1200

Subject:	GRW/WACR/M1 - Coherence Filter Contamination
DataStreams:	grwwacrM1.b1
Description:	The coherence filter (software) that was added to the WACR under BCR-01500 was causing occasional contamination to WACR data. This was exhibited in the first 2000 m of range by streaking in the data over a period of time. It didn't occur often and when it did, it is quite obvious looking at the plots. On 4/2/2010 at 12:00 UTC, the coherence filter was modified to preclude working on signals with a SNR greater than 60 dB. The vendor thinks this will solve the problem.
Measurements:	grwwacrM1.b1: lat PowerHotLoad Temp_Computer_Enclosure Temp_Antenna_Bottom SignalToNoiseRatio heights PowerAmbientLoad Temp_LNA Polarization Temp_Modulator_Control PowerTransmitDriver Temp_Hot txpower MMCR Spectral Width(SpectralWidth) Temp_ambient Noise Temp_Outside Temp_Future base_time alt time time_offset wacr_status Temp_Chiller lon Cloud, reflectivity, at altitude(Reflectivity) Temp_Antenna_Top Temp_Chiller_Supply Temp_modulator Temp_EIKA MMCR Mean Doppler Velocity(MeanDopplerVelocity) Temp_Chiller_Return

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DQRID : D111005.3

Start Date	Start Time	End Date	End Time
01/01/2010	0000	06/02/2010	1800

Subject:	GRW/AOS/M1 - CCN signal decline
DataStreams:	grwaosccnM1.a1
Description:	There was a slow decline in the CCN signal from January to June of 2010 at GRW. The reason for this decline is unknown as all the instrument operating parameters appear normal. The decline was likely from a change in the CCN column thermal properties or a clogging of the detector inlet.
Measurements:	grwaosccnM1.a1: CCN_laser_current CCN_dT_TEC3_TEC1_StdDev CCN_P_sample CCN_temp_unstable_flag CCN_ss_set Size of upper limit of each CCN bin(CCN_UpperSizeLimit) CCN_Q_sample CCN_T_TEC2 CCN_T_TEC1 CCN_T_nafion CCN_Temperature_Gradient CCN_FirstStageMonitorVoltage CCN_T_TEC3 CCN_T_OPC CCN_ss_calc CCN_T_sample CCN_Q_sheath AOS number concentration of CCN(N_CCN) CCN_T_inlet AOS CCN number concentration by bin(N_CCN_dN) CCN_ProportionalValveVoltage AOS bin number of lowest channel of OPC include in summation of N_CCN(N_CCN_bin_number)

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