Start Date | Start Time | End Date | End Time | Data Quality Metric |
---|---|---|---|---|
09/14/2003 | 1000 | 09/25/2003 | 1543 | Incorrect |
Subject: | SGP/SIRS/E2 - Ventilator Fan Failure |
DataStreams: | sgpsirs20sE2.a0, sgpsirsE2.b1, sgpsirsE2.00 |
Description: | Measured downwelling shortwave data was very questionable, reporting nighttime values as low as -50 W/m^2, while differing from calculated downwelling shortwave by as much as 50 W/m^2 lower during the day. The first indication of a problem was around 10 UTC, 9/14, when measured DS values suddenly dropped below 10 W/m^2 for about a 2 hour period before sunrise, then were consistently lower than calculated DS by as much as 40 W/m^2 during the day. The problem got progressively worse with time until the ventilator fan was replace on 9/25. Ventilator fan failure changed the fundamental operating characteristics of this PSP and resulted in unpredictable biased measurements which cannot be corrected without additional empirical characterization of the radiometer in question. |
Suggestions: | Disregard this data. |
Measurements: | sgpsirs20sE2.a0: more
sgpsirsE2.00: more sgpsirsE2.b1: more |