DQRID : D000514.3
Start DateStart TimeEnd DateEnd Time Data Quality Metric
12/15/1993000011/01/19940000Suspect
more
Subject:
SGP/SIROS/E15 - occasional spikes in readings
DataStreams:DsgpsirosE15.00, sgpsirosE15.a1
Description:
Since installation of this SIROS site to the dates specified, negative spikes
occurred in the data streams indicated, especially for down_short_hemisp and
down_long_diffuse_hemisp.  These spikes were induced by electrical interference from the
fence that was used to keep out cattle.  The spikes were eliminated by moving
the fence further away from the SIROS sensors in October 1994.  An assessment
by Mike Splitt on the effects of the spikes indicated that the spikes
superimposed on the readings ranged from -10 to -100 W m^-2.  As many as 40 per
day could occur.  As a result of these spikes, the daily average reading of
irradiance could be reduced by as much as 1 W m^-2, a half-hour average could be
reduced by as much as 2 W m^-2, and a 5-min average could be affected by as much
as 5 W m^-2.
Suggestions: 
Inspect data carefully before use
Measurements:sgpsirosE15.a1:
  • down_short_hemisp
  • down_long_diffuse_hemisp
more
DsgpsirosE15.00:
  • Development raw data stream - documentation not supported
more

Close this window