Start Date | Start Time | End Date | End Time | Data Quality Metric |
---|---|---|---|---|
10/20/1994 | 0000 | 11/01/1994 | 1540 | Incorrect |
Subject: | SGP/EBBR/E7 - Net Radiometer not level |
DataStreams: | sgp15ebbrE7.b1, sgp5ebbrE7.b1, sgp30ebbrE7.b1 |
Description: | Sometime between 0000 and 1200 GMT on October 20, 1994, the net radiometer support of the EBBR at E7 was bent down at about a 30 degree angle, probably by migrating birds. A couple of DQRs have been issued by me indicating other extended facilities at which birds have caused incorrect data from net radiometers. The net radiometer support was probably loose to begin with. The effect can be easily seen in the data, when comparison is made to the EBBR data at Ashton, KS. Since the net radiometer support extends south from the EBBR, the net radiation values are high during the period above, leading to incorrect values of latent and sensible heat fluxes. Until the net radiometer was levelled on November 1, 1994, the net radiation was approximately 26% high at solar noon, although it may have been incorrect by a smaller percentage at night. From October 22 through 28 the half hour of data nearest solar noon averaged 497 watts per meter squared at Elk Falls and only 396 at Ashton. 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: | sgp5ebbrE7.b1: more
sgp15ebbrE7.b1: more sgp30ebbrE7.b1: more |