Start Date | Start Time | End Date | End Time | Data Quality Metric |
---|---|---|---|---|
08/04/2005 | 2207 | 08/17/2005 | 1840 | Incorrect |
Subject: | SGP/SIRS/E20 - Downwelling Shortwave PSP Damaged by Lightning |
DataStreams: | sgpsirsE20.b1, sgpsirsE20.00, sgpsirs20sE20.a0 |
Description: | The PSP was damaged by a lightning strike on 8/04/05 (22:10 GMT). Data from other radiometers are good after this event. The PSP, NIP and shaded 8-48 were replaced 8/17/05 and the system returned to service at 18:40 GMT. Downwelling Shortwave (DS) data from the unshaded PSP during this period is reported as 0.0 W/sq m. The DS can be computed from available Direct Normal (NIP), Downwelling Diffuse (DD), and the computed Solar Zenith Angle (SZA) using the following equation: DS = NIP * Cos(SZA) + DD Estimated uncertainties of the computed values are actually lower than those of the measured DS (+/- 3% or 4% vs. +/- 5% to 10% respectively, depending on SZA). |
Suggestions: | Calculate DS as suggested. |
Measurements: | sgpsirs20sE20.a0: more
sgpsirsE20.00: more sgpsirsE20.b1: more |