DQRID : D980110.2
Start DateStart TimeEnd DateEnd Time Data Quality Metric
05/30/1997150007/20/19991530Incorrect
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Subject:
SGP/EBBR/E19 - Noisy Sensible and Latent Heat Fluxes
DataStreams:sgp15ebbrE19.b1, sgp30ebbrE19.b1, sgp5ebbrE19.b1
Description:
"Noisy" sensible and latent heat fluxes often occur during daytime periods
when the net radiation is smaller (less than 150 watts/m2), but this is not
the only condition under which it occurs.  During this condition especially,
the temperature gradient, RH gradient, and thus the vapor pressure
gradient are near zero; this causes the sensible and latent heat flux gradients
to be inaccurately calculated.  Good examples of these conditions occurred
on 28 December 1997 and 6 January 1998.  However, even when there is
substantial net radiation the problem does sometimes occur; good examples of
this are found during daytime or nighttime variously on 1, 2, 3, and 4
January 1998.  The conditions occur more fequently than at other EBBR sites;
they do occur at other EBBR sites, but less frequently.
Suggestions: 
Measurements:sgp30ebbrE19.b1:
  • sensible_heat_flux
  • latent_heat_flux
  • net_radiation
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sgp15ebbrE19.b1:
  • net_radiation_mv
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sgp5ebbrE19.b1:
  • net_radiation
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