Articles | Volume 11, issue 7
https://doi.org/10.5194/amt-11-4005-2018
https://doi.org/10.5194/amt-11-4005-2018
Research article
 | 
11 Jul 2018
Research article |  | 11 Jul 2018

Inter-channel uniformity of a microwave sounder in space

Martin Burgdorf, Imke Hans, Marc Prange, Theresa Lang, and Stefan A. Buehler

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Latest update: 23 Feb 2024
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Short summary
We analysed observations of the Moon with the Advanced Microwave Sounding Unit-B on the NOAA-16 satellite in order to search for bias in the sounding channels. Significant bias had been detected in the past on the basis of simultaneous nadir overpasses. With the Moon providing a quite different reference flux than the on-board calibration target and Earth scenes, radio-frequency interference emerged as the best explanation for the anomalies of channel 20 of AMSU-B on NOAA-16.