Annual precipitation and daily extreme precipitation distribution: possible trends from 1960 to 2010 in urban areas of China

Geomatics, Natural Hazards & Risk

Xin Li¹  Kaihang Zhang²  Jun Gao³  Weiyue Li³  Marco Scaioni⁴  Xiaogang He⁵  Chunrong Mi⁶  Jing Zhao⁶  Yu Chen⁶  Dongjing Yao⁷ 

[1] Institute of Tibetan Plateau Research, Chinese Academy of Sciences;Institute of Tourism, Shanghai Normal University;Institute of Urban Studies, Shanghai Normal University;Politecnico di Milano;Princeton University;Shandong Academy of Building Research;Shanghai Normal University;

关键词: annual precipitation;    daily extreme precipitation;    precipitation trends urban areas;    metropolitan region;   

DOI  :  10.1080/19475705.2019.1609604

来源: DOAJ

【 摘 要 】

With global warming, precipitation events are often prone to intensify in some regions. Understanding the changing characteristics of annual and daily extreme precipitation as well as the underlying mechanisms plays an import role for early warning of precipitation-induced disaster (e.g. floods, landslides) and water resources management, especially in densely populated urban areas. In this study, we investigate the long-term trend of annual and daily extreme precipitation in China during 1960–2010 based on daily observations from 539 meteorological stations, and the land cover map with impervious information. We find an overall increasing trend in annual and daily extreme precipitation, particularly in South-East and North-West of China. Moreover, 157 stations located in metropolitan regions experience higher increasing trends of daily extreme precipitation, particularly in Shanghai and Guangzhou metropolitan areas. It is noted that the central urban area of one metropolitan region may have significantly higher increasing trends of daily extreme precipitation than corresponding surrounding areas.

【 授权许可】

Unknown