Observation modes of EarthCARE/CPR with different Doppler measurement accuracy: evaluation of their applicability

Imura, Yuki; Aoki, Shunsuke; Kubota, Takuji; Nakatsuka, Hirotaka; Ohno, Yuichi; Okamoto, Hajime

doi:10.5194/amt-19-5617-2026

Articles | Volume 19, issue 17

https://doi.org/10.5194/amt-19-5617-2026

© Author(s) 2026. 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-19-5617-2026

© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 19, issue 17

Research article

|

04 Sep 2026

Research article |

| 04 Sep 2026

Observation modes of EarthCARE/CPR with different Doppler measurement accuracy: evaluation of their applicability

Yuki Imura, Shunsuke Aoki, Takuji Kubota, Hirotaka Nakatsuka, Yuichi Ohno, and Hajime Okamoto

Data sets

EarthCARE/CPR L1B CPR one-sensor Received Echo Power Products and Doppler Product JAXA https://doi.org/10.57746/EO.01jdvcydwjf63vpdbjp0vz6v64

EarthCARE/CPR L2a CPR one-sensor Echo Product JAXA https://doi.org/10.57746/EO.01jdvd0xm10ema4rxwbpcd0dn1

EarthCARE/CPR L2a CPR one-sensor Cloud Products JAXA https://doi.org/10.57746/EO.01jdvd2gqq34e6yz9p8kfe68x5

EarthCARE/ATLID L2a ATLID one-sensor Cloud Aerosol Products JAXA https://doi.org/10.57746/EO.01jkwjk45jrx9frz6c11x4rs8e

Short summary

Understanding air motion within clouds is essential for weather and climate research. A new satellite launched in 2024 can observe how clouds move around the world for the first time. In this study, we compare three observation modes using real satellite data. We find that some modes provide more accurate measurements but reduce the ability to observe very high clouds and increase the risk of false signals. Our results show which observation modes work best in different regions of the world.