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How Well Does the ERA5 Reanalysis Capture the Extreme Climate Events Over China? Part I: Extreme Precipitation

Lei, Xiangyong; Xu, Wanling; Chen, Shiting; Yu, Tingting; Hu, Zengyun; Zhang, Meng; Jiang, Lizhi; Bao, Ruijuan; Guan, Xiaojun; Ma, Miaomiao; Wei, Jianhui ORCID iD icon 1; Feng, Aixia ; Gao, Lu
1 Institut für Meteorologie und Klimaforschung – Atmosphärische Umweltforschung (IMK-IFU), Karlsruher Institut für Technologie (KIT)

Abstract:

ERA5 is the fifth-generation atmospheric reanalysis of the European Center for Medium-Range Weather Forecasts, with high spatiotemporal resolution and global coverage. However, the reliability of ERA5 for simulating extreme precipitation events is still unclear over China. In this study, 12 extreme precipitation indices and a comprehensive quantitative distance between indices of simulation and observation were used to evaluate ERA5 precipitation from three fundamental aspects: intensity, frequency, and duration. The geomorphological regionalization method was used to divide the subregions of China. The results showed that the ability of ERA5 to simulate annual total precipitation was better than that of daily precipitation. For the intensity indices, ERA5 performs well for simulating the PRCPTOT (annual total wet days precipitation) over China. ERA5 performs better on RX5day (max 5-days precipitation amount) and R95p (very wet days), especially in eastern China, than on RX1day (max 1-day precipitation amount) and R99p (extremely wet days). For the frequency indices, the ability of the ERA5 simulation increased as the amount of precipitation increased, except for northwestern China. ... mehr


Verlagsausgabe §
DOI: 10.5445/IR/1000148960
Originalveröffentlichung
DOI: 10.3389/fenvs.2022.921658
Scopus
Zitationen: 16
Web of Science
Zitationen: 15
Dimensions
Zitationen: 18
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Meteorologie und Klimaforschung – Atmosphärische Umweltforschung (IMK-IFU)
Publikationstyp Zeitschriftenaufsatz
Publikationsjahr 2022
Sprache Englisch
Identifikator ISSN: 2296-665X
KITopen-ID: 1000148960
HGF-Programm 12.11.33 (POF IV, LK 01) Regional Climate and Hydrological Cycle
Erschienen in Frontiers in Environmental Science
Verlag Frontiers Media SA
Band 10
Seiten Art.Nr. 921658
Vorab online veröffentlicht am 15.06.2022
Nachgewiesen in Dimensions
Web of Science
Scopus
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