Atmospheric Chemistry and Physics
Atmospheric Chemistry and Physics
ACP
Articles | Volume 26, issue 10
Articles | Volume 26, issue 10
https://doi.org/10.5194/acp-26-6763-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/acp-26-6763-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 26, issue 10
Research article
 | 
19 May 2026
Research article |  | 19 May 2026

A process-oriented analysis of the summertime diurnal cycle of precipitation and diabatic heating over China in three reanalyses

Yanjie Liu, Xiaocong Wang, Yimin Liu, Shuaiqi Tang, and Hao Miao

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Short summary
This study investigates how well operational models simulate the diurnal cycle of summer rainfall over China. Comparing three reanalyses shows all capture nocturnal precipitation peak but differ in afternoon rainfall timing: JRA‑55 and MERRA‑2 match observations better, while ERA5 exhibits a 3-hour phase advance. These differences are linked to how large-scale forcing is use in convection parameterization, underscoring the critical role of trigger on cumulus convection.
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