DQRID : D060217.2
Start DateStart TimeEnd DateEnd Time Data Quality Metric
02/15/2006130002/16/20061500Incorrect
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Subject:
NSA/SKYRAD/C1 - Instrument noise
DataStreams:nsaskyrad20sC1.a0, nsaskyrad60sC1.b1
Description:
Skyrad data appears affected by noise creating bias in analog voltage readings on 
02/15/2006 from 1300-1800GMT and again on 02/16/2006 from 1300-1500GMT.  The second night the 
noise is attenuated significantly.  By 02/17 no bias/noise is detectable. The thermistor 
measurements in PIR1 and PIR2 were unaffected during these excursions and showed no 
deviation from normal during the problem period.  In addition, the onboard logger temperature and 
battery voltage read normal throughout.  The problem has not reappeared as of 4/25/2006.
Suggestions: 
disregard data during this timeframe or use with discretion.
Measurements:nsaskyrad20sC1.a0:
  • inst_down_long_hemisp_shaded2_tp
  • inst_down_long_shaded2_case_resist
  • inst_down_long_shaded1_case_resist
  • inst_global
  • inst_sky_ir_signal
  • inst_diffuse
  • inst_direct_normal
  • inst_down_long_hemisp_shaded1_tp
  • inst_down_long_shaded2_dome_resist
  • inst_down_long_shaded1_dome_resist
more
nsaskyrad60sC1.b1:
  • sky_ir_temp
  • down_short_diffuse_hemisp
  • down_long_hemisp_shaded1_max
  • down_short_hemisp_max
  • down_short_hemisp_std
  • down_long_hemisp_shaded1_std
  • down_short_hemisp
  • down_short_diffuse_hemisp_min
  • short_direct_normal_max
  • short_direct_normal_std
  • down_long_hemisp_shaded1_min
  • down_short_diffuse_hemisp_std
  • short_direct_normal
  • down_short_diffuse_hemisp_max
  • short_direct_normal_min
  • sky_ir_temp_max
  • sky_ir_temp_std
  • down_long_hemisp_shaded2
  • down_long_hemisp_shaded2_min
  • down_long_hemisp_shaded1
  • down_short_hemisp_min
  • down_long_hemisp_shaded2_std
  • down_long_hemisp_shaded2_max
  • sky_ir_temp_min
more

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