中国气象局全球大气再分析（CMA-RA V1.5）-10KM-逐小时

全球大气再分析产品（V1.5）-10KM，基于四维集合变分混合同化、长序列卫星辐射率偏差订正、国产卫星资料同化等关键技术，实现全球常规资料与116颗215种卫星资料同化应用，研制出了1979年以来的逐小时全球大气再分析产品（CMA-RA V1.5），滞后6小时追加。模式垂直64层（顶高0.27hPa）、原始分辨率13km（后处理为0.1°等），于2024年5月公开发布。CMA-RA V1.5质量较CRA-40显著提升，优于JRA-55等国际第三代再分析水平，已广泛应用于国家级核心业务和社会各行业。

Global Atmospheric Reanalysis Product (V1.5) - 10KM: Based on key technologies including four-dimensional ensemble variational hybrid data assimilation, long-term satellite radiance bias correction, and domestic satellite data assimilation, it enables the assimilation and application of global conventional observational data and 215 types of satellite data from 116 satellites. The hourly global atmospheric reanalysis product (CMA-RA V1.5) spanning from 1979 has been developed, with a 6-hour lag for updates. The model features 64 vertical levels with a top pressure of 0.27 hPa, an original spatial resolution of 13 km post-processed to 0.1° and other specifications, and was publicly released in May 2024. The quality of CMA-RA V1.5 has been significantly improved compared to CRA-40, and it outperforms third-generation international reanalysis products such as JRA-55. It has been widely applied in national core operational services and various social sectors.

搜集汇总

背景与挑战

背景概述

该数据集是中国气象局研制的全球大气再分析产品（CMA-RA V1.5），基于四维集合变分混合同化等关键技术，提供了1979年以来逐小时、10公里分辨率的全球大气数据，于2024年5月公开发布。其质量优于国际第三代再分析水平，已广泛应用于国家级核心业务及多个社会行业。