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Does non-stationarity of extreme precipitation exist in the Poyang Lake Basin of China?

Lei, Xiangyong; Gao, Lu; Ma, Miaomiao; Wei, Jianhui ORCID iD icon 1; Xu, Ligang; Wang, Lan; Lin, Hui
1 Institut für Meteorologie und Klimaforschung (IMK), Karlsruher Institut für Technologie (KIT)


Study region
Poyang Lake Basin, China.

Study focus
This study aimed to investigate whether there are non-stationary characteristics of extreme precipitation in the Poyang Lake Basin (PLB) of China, and the trends of non-stationary characteristics from 1959 to 2019. The spatio-temporal variations of extreme precipitation were analysed from three fundamental aspects: duration, frequency, and intensity, based on the prewhitening Mann-Kendall (PWMK) test. Non-stationary variations and the risk of extreme precipitation were investigated based on the generalized additive models for location, scale, and shape (GAMLSS).

New hydrological insights for the region
(1) the intensity and frequency of extreme precipitation increased significantly, whereas there was a significant decrease in extreme precipitation duration in the PLB. (2) The duration of extreme precipitation showed significant non-stationary characteristics in the western PLB. At the Nanchang site, 83.3 % of the extreme precipitation intensity indices showed non-stationary characteristics. The RX1day (maximum 1-day precipitation amount) and RX5day (maximum 5-day precipitation amount) increased significantly for different return periods under non-stationary conditions in the northwestern PLB. ... mehr

Verlagsausgabe §
DOI: 10.5445/IR/1000137737
Veröffentlicht am 22.09.2021
DOI: 10.1016/j.ejrh.2021.100920
Zitationen: 13
Zitationen: 13
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Meteorologie und Klimaforschung – Atmosphärische Umweltforschung (IMK-IFU)
Publikationstyp Zeitschriftenaufsatz
Publikationsmonat/-jahr 10.2021
Sprache Englisch
Identifikator ISSN: 2214-5818
KITopen-ID: 1000137737
HGF-Programm 12.11.33 (POF IV, LK 01) Regional Climate and Hydrological Cycle
Erschienen in Journal of Hydrology: Regional Studies
Verlag Elsevier
Band 37
Seiten Art.-Nr.: 100920
Nachgewiesen in Scopus
Web of Science
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