Articles | Volume 18, issue 20
https://doi.org/10.5194/amt-18-5607-2025
https://doi.org/10.5194/amt-18-5607-2025
Research article
 | 
21 Oct 2025
Research article |  | 21 Oct 2025

EarthCARE's cloud profiling radar antenna pointing correction using surface Doppler measurements

Bernat Puigdomènech Treserras, Pavlos Kollias, Alessandro Battaglia, Simone Tanelli, and Hirotaka Nakatsuka

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Short summary
We investigate how seasonal solar illumination affects the pointing accuracy of EarthCARE’s cloud profile radar (CPR) antenna and introduce a correction based on surface Doppler measurements. The correction improves measurement accuracy by reducing Doppler velocity biases to within 5 and 7 cm s−1. Our results demonstrate the importance of continuous pointing characterization to maintain the scientific accuracy of EarthCARE’s CPR Doppler observations.
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