Data Quality Reports for Session: 152780 User: renata Completed: 09/04/2013


TABLE OF CONTENTS

DQR IDSubjectData Streams Affected
D130221.3SGP/ARMBE/C1 - incorrect qc_flag values, VAP errorsgparmbeatmC1.c1, sgparmbecldradC1.c1


DQRID : D130221.3
Start DateStart TimeEnd DateEnd Time
01/01/1996000012/31/20112300
Subject:
SGP/ARMBE/C1 - incorrect qc_flag values, VAP error
DataStreams:sgparmbeatmC1.c1, sgparmbecldradC1.c1
Description:
This problem impacts the qc_cld_base_source and qc_cld_frac_source fields in the 
ARMBECLDRAD product, and is described below:

qc_cld_base_source:  The metadata for this field lists possible values of 0, -1, -2, -3, 
and -4.  However, this field contains values equal to -5, which are undefined.  This 
problem is most prevalent in 1996 and 2011, but also occurs in 1997, 2002, 2008, and 2010.  
There is no cld_base field in this VAP, so I'm not sure what this QC field is used for. 

qc_cld_frac_source:  The metadata for this field lists possible values of -1, 1, 2, and 3. 
 However, this field contains values equal to -5, which are undefined.  This problem is 
most prevalent in 1996 and 2011, but also occurs in 1997, 2002, 2008, and 2010.  During 
these periods the cld_frac field is equal to -9999, but a value of -1 in 
qc_cld_frac_source should coincide with these periods.
Measurements:sgparmbecldradC1.c1:
  • Cloud thickness, satellite-measured(cld_thick)
  • Fractional Sky Cover, based on SWF, hourly mean(skycover)
  • Surface Upwelling (10 meter) Longwave Hemispheric Irradiance, hourly mean(lwup)
  • base_time
  • time_bounds
  • TOA LW flux, upward positive(lw_net_TOA)
  • lon
  • Total Cloud Fraction based on MMCR/MPL, narrow field-of-view, hourly mean(tot_cld)
  • stdev_totswfluxdn
  • stdev_pwv
  • tot_cld_tsi
  • stdev_skycover
  • Liquid water path best-estimate value, hourly mean(lwp)
  • stdev_lwup
  • lat
  • TOA net SW flux, downward positive(sw_net_TOA)
  • TOA solar insolation(sw_dn_TOA)
  • time_frac
  • time_offset
  • Whole-sky Downwelling SW, based on SWF, hourly mean(totswfluxdn)
  • stdev_lwp
  • stdev_swup
  • stdev_swdir
  • stdev_lwdn
  • Middle level cloud, satellite-measured(cld_mid)
  • cld_frac_MPL
  • Clear-sky Downwelling SW, based on SWF, hourly mean(clrswfluxdn)
  • Pressure, associated geometric height, at altitude, NGM model output(height)
  • stdev_clrswfluxdn
  • time
  • High level cloud, satellite-measured(cld_high)
  • stdev_swdif
  • Low level cloud, satellite-measured(cld_low)
  • alt
  • Surface Downwelling Shortwave Diffuse Hemispheric Irradiance, hourly mean(swdif)
  • cld_frac_MMCR
  • Surface Downwelling Shortwave Hemispheric Irradiance, best estimate, hourly mean(swdn)
  • Surface Direct Shortwave Irradiance: direct normal component of SW * the cosine
    of solar zenith angle, hourly mean(swdir)
  • Cloud top, satellite-measured(cld_top)
  • Water vapor, precipitable, column-integrated on isobaric grid, from RUC model(pwv)
  • stdev_swdn
  • Cloud Fraction based on MMCR and MPL, hourly mean(cld_frac)
  • Surface Upwelling Shortwave Hemispheric Irradiance, hourly mean(swup)
  • cld_tot
  • Surface Downwelling Longwave Hemispheric Irradiance, hourly mean(lwdn)

sgparmbeatmC1.c1:
  • Relative Humidity, at 2m(rh_sfc)
  • wspd_z
  • Environmental Temperature (p grid)(T_nwp_p)
  • time_offset
  • p_bounds
  • Wind Speed, from sounding in p coordinate(wspd_p)
  • z2
  • Surface Latent Heat Flux, upward positive(LH)
  • Pressure, atmospheric, at altitude, RUC model output(p)
  • Relative Humidity (p grid)(rh_nwp_p)
  • lat
  • Temperature, at 2m(T_sfc)
  • rh_z
  • Relative humidity scaled, by total column amount from MWR, from sounding in p
    coordinate(rh_p)
  • Precipitation Rate(prec_sfc)
  • time_frac
  • z_bounds
  • V Windspeed, y component, at 10m(v_sfc)
  • z
  • lon
  • z10
  • Dry Bulb Temperature, from sounding in p coordinate(T_p)
  • Dewpoint Temperature, from sounding in p coordinate(Td_p)
  • alt
  • Barometric Pressure(p_sfc)
  • T_z
  • time
  • u-Component of Wind (p grid)(u_nwp_p)
  • base_time
  • Vertical Velocity (p grid)(omega_nwp_p)
  • Wind Direction, at 10m(wdir_sfc)
  • Surface Sensible Heat Flux, upward positive(SH)
  • U Windspeed, x component, at 10m(u_sfc)
  • v-Component of Wind (p grid)(v_nwp_p)
  • Td_z
  • time_frac_z
  • time_bounds
  • Eastward Wind Component, from sounding in p coordinate(u_p)
  • SH_beecor
  • Northward Wind Component, from sounding in p coordinate(v_p)
  • wdir_z
  • u_z
  • v_z
  • Wind Speed, at 10m(wspd_sfc)
  • LH_beecor
  • time_frac_p
  • Wind Direction, from sounding in p coordinate(wdir_p)


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