DQRID : D970429.1
Start DateStart TimeEnd DateEnd Time Data Quality Metric
04/12/1997000004/17/19971400Suspect
more
Subject:
solar tracker inoperative
DataStreams:sgpsirosE2.a1
Description:
On about 97/04/12 the solar tracker at site E2 stopped working.  The
solar tracker exhibits its broken state in a particular striking fashion on 97/04/14 - an 
almost
cloud-free day.  On this day, the NIP reads zero and the diffuse and
direct SW radiation are about the same.  The fact that these two data steams
are not exactly the same indicates a calibration problem - probably with
the diffuse instrument.  This poor calibration is not typical of other
ARM sites!  On about 97/04/17 (1400 GMT) the solar tracker was fixed.

(Note: we cannot pinpoint the exact time or date when the solar tracker
went out and the date quoted above {97/04/12} should be regarded
as approximate)
Suggestions: 
Measurements:sgpsirosE2.a1:
  • lon
  • down_long_dome_temp
  • down_long_diffuse_hemisp
  • logger_temp
  • diffuse_hemisp_narrowband
  • therm_volt
  • down_short_hemisp
  • down_long_case_temp
  • direct_norm_broadband
  • up_long_case_temp
  • up_long_dome_temp
  • flag_ln_error1-24
  • logger_volt
  • base_time
  • direct_norm_narrowband
  • flag_nighttime1-24
  • time_offset
  • channel
  • alt
  • flag_zero_cosine1-24
  • lat
  • short_direct_normal
  • flag_zero_divisor1-24
  • hemisp_broadband
  • down_short_diffuse_hemisp
  • up_short_hemisp
  • diffuse_hemisp_broadband
  • up_long_hemisp
  • mfrsr_temp
  • hemisp_narrowband
more

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