Articles | Volume 11, issue 7
Atmos. Meas. Tech., 11, 4005–4014, 2018
https://doi.org/10.5194/amt-11-4005-2018
Atmos. Meas. Tech., 11, 4005–4014, 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 et al.

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Cited articles

Atkinson, N. C.: AMSU-B EM Thermal Vacuum Test Report, EM, Met Office, Farnborough, 18 pp., 2000. a
Atkinson, N. C.: Performance of AMSU-B Flight Model 2 (FM2) during NOAA-L Post Launch Orbital Verification Tests, AMB112, Met Office, Farnborough, 24 pp., 2000. a, b
Atkinson, N. C.: Calibration, Monitoring and Validation of AMSU-B, Adv. Space Res., 28, 117–126, 2001. a
Bobryshev, O., Buehler, S. A., John, V. O., Brath, M., and Brogniez, H.: Is There Really a Closure Gap Between 183.31-GHz Satellite Passive Microwave and In Situ Radiosonde Water Vapor Measurements?, IEEE T. Geosci. Remote, 56, 2904–2910, 2018. a
Bonsignori, R.: In-orbit verification of microwave humidity sounder spectral channels coregistration using the moon, J. Appl. Remote Sens., 12, 025013, https://doi.org/10.1117/1.JRS.12.025013, 2018. a, b
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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.