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

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

doi:https://doi.org/10.5194/amt-18-5607-2025

Articles | Volume 18, issue 20

https://doi.org/10.5194/amt-18-5607-2025

© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.

Special issue:

Early results from EarthCARE (AMT/ACP/GMD inter-journal SI)

https://doi.org/10.5194/amt-18-5607-2025

© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 18, issue 20

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

Data sets

EarthCARE CPR Antenna Mispointing Correction LUT Bernat Puigdomènech Treserras et al. https://doi.org/10.5281/zenodo.15740762

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.