Start Date | Start Time | End Date | End Time | Data Quality Metric |
---|---|---|---|---|
09/14/2006 | 1900 | 02/21/2008 | 1005 | Incorrect |
Subject: | SGP/MFRSR/E9 - Large night-time offsets |
DataStreams: | sgpmfrsrE9.a0, sgpmfrsrlangleyE9.c1, sgpmfrsrE9.b1, sgpmfrsrlangplotE9.c1 |
Description: | Some channels (415, 673 and 940) are flatlining in the early morning and late afternoon. This is not an instrument problem per se, but a result of the new data calibration procedure combined with the way the instrument operates. This problem is noticeable when an instrument has an unusually large negative nighttime offset. The new data calibration procedure adds back the offset to daytime data. The problem arises because the MFRSR, in banding mode, doesn't allow for values less than 0. So the large offset gets added back to the global and diffuse data producing the "flatline" until raw values exceed zero. It is most noticeable on very overcast days. |
Suggestions: | |
Measurements: | sgpmfrsrE9.b1: more
sgpmfrsrE9.a0: more sgpmfrsrlangleyE9.c1: more sgpmfrsrlangplotE9.c1: more |