| Start Date | Start Time | End Date | End Time | Data Quality Metric |
|---|---|---|---|---|
| 06/28/2013 | 0125 | 07/05/2013 | 1540 | Missing |
| Subject: | SGP/SIRS/C1 - NIP sensor failure |
| DataStreams: | sgpsirsC1.b1, sgpsirs20sC1.a0 |
| Description: | The short_direct_normal data are missing due to an instrument failure (NIP pyhrheliometer) likely due to a nearby lightning strike near the time of initial failure. The short_direct_normal data are not recoverable during this time period. However, direct normal data can be reconstructed from the down_short_diffuse_hemisp and down_short_hemisp using the following relationship for each data point: short_direct_normal = (down_short_hemisp - down_short_diffuse_hemisp)/cos(zenith angle) |
| Suggestions: | |
| Measurements: | sgpsirsC1.b1: more
sgpsirs20sC1.a0: more |