DQRID : D941114.2
Start DateStart TimeEnd DateEnd Time Data Quality Metric
10/21/1994030011/02/19941715Incorrect
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Subject:
SGP/EBBR/E8 - Water in Net Radiometer
DataStreams:sgp30ebbrE8.b1, sgp15ebbrE8.b1, sgp5ebbrE8.b1
Description:
At some time previous to October 21, 1994, the top hemisphere of the net
radiometer of the EBBR at E8 was pierced, probably by migrating birds.  A
DQR was issued by me a couple of weeks ago indicating other extended
facilities at which this has happened.  Net radiometer data was correct
until October 21 at sometime between 0230 and 0300 GMT, when rain began to
enter the radiometer; the effect can be easily seen in the data.
Collection of 3/4 inch of water in the bottom hemisphere was not the only
consequence of the situation.  Unlike other net radiometers that have had
this experience, this one produced incorrect data during daylight hours as
well as during nightime hours until the water was removed, the sensor
dried, and the hemispheres were replaced on November 2, 1994.  During the
period listed above, the following data are incorrect and cannot be
recalculated:

5 minute:  q

15 minute: mv_q

30 minute: q, h, e

Science Team members or others using the data should recognize that the
flux data is not correct for this fairly lengthy time period.
Suggestions: 
Measurements:sgp5ebbrE8.b1:
  • net_radiation
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sgp15ebbrE8.b1:
  • net_radiation_mv
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sgp30ebbrE8.b1:
  • latent_heat_flux
  • net_radiation
  • sensible_heat_flux
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