Start Date | Start Time | End Date | End Time | Data Quality Metric |
---|---|---|---|---|
04/01/2002 | 0000 | 08/02/2002 | 1652 | Suspect |
Subject: | SGP/MWR/B6 - High noise level, poor calibration |
DataStreams: | sgpmwrlosB6.a0, sgpmwrlosB6.b1, sgpmwrlosB6.a1 |
Description: | The data from this instrument (serial number 18) have become increasingly noisy, most likely due to a failing local oscillator. A consequence of this increased noise level has been few valid calibration scans ("tip curves") since 1 April 2002: during the period 26-31 March 2002 1496 valid tip curves were acquired, whereas only 729 were acquired during April, 387 during May, 143 during June, 243 during July. As a result, the calibration was not as well-maintained as usual. The measured brightness temperatures and retrieved precipitable water vapor and liquid water path should be regarded as suspect. The instrument was replaced with serial number 04 on 2 August 2002. |
Suggestions: | The noise and suspect calibration are not correctable. Use of these data should be avoided. |
Measurements: | sgpmwrlosB6.a0: more
sgpmwrlosB6.b1: more sgpmwrlosB6.a1: more |