Atmospheric Measurement Techniques
Atmospheric Measurement Techniques
AMT
Articles | Volume 19, issue 20
Articles | Volume 19, issue 20
https://doi.org/10.5194/amt-19-6553-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/amt-19-6553-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 19, issue 20
Research article
 | 
19 Oct 2026
Research article |  | 19 Oct 2026

A prototype algorithm for all-sky atmospheric temperature profile retrieval over ocean based on channel optimization for the FY-4M satellite

Yu Wang, Xinbin Ma, Banghai Wu, Qiang Guo, Jing Xi, Rui Li, Xin Wang, and Xiaoqing Li

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Short summary
China’s Fengyun-4M, planned for launch in late 2026, will be the first geostationary satellite to carry a passive microwave instrument, opening a new era of weather observation. To better use its more than one hundred channels, we developed a retrieval method and an optimized channel setup for all-sky temperature profile retrieval over ocean. The results indicate that this algorithm shows low errors while reducing computing time, which is a preferred choice for future operational use.
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