Start Date | Start Time | End Date | End Time | Data Quality Metric |
---|---|---|---|---|
08/20/2001 | 0000 | 01/23/2002 | 0000 | Suspect |
Subject: | NSA/SKYRAD/C1 - NSA B&W nighttime offset in Barrow too large |
DataStreams: | nsaskyrad60sC1.b1, nsaskyradC1.00, nsaskyrad60sC1.a1 |
Description: | This problem only became apparent as NSA C1 nights became long enough for full darkness. The shaded global diffuse instrument (Eppley 8-48) showed a negative nighttime offset larger than the expected 0 to -4 W/m2. Typically -5 to -8 W/m2. This size of offset is not uncommon with Eppley PSPs but not observed with Eppley 8-48s. The problem was corrected with replacement of mounting screws which were creating a ground loop. |
Suggestions: | Data to be used at users discretion. |
Measurements: | nsaskyradC1.00: more
nsaskyrad60sC1.a1: more nsaskyrad60sC1.b1: more |