Is southwestern China experiencing more frequent precipitation extremes?
By Meixian Liu, Xianli Xu, Alexander Y. Sun, Kelin Wang, Wen Liu, Xiaoyan Zhang. 2014
164 citations recorded by the source corpus.
Climate extremes have and will continue to cause severe damages to buildings and natural environments around the world. A full knowledge of the probability of the climate extremes is important for the management and mitigation of natural hazards. Based on Mann–Kendall trend test and copulas, this study investigated the characteristics of precipitation extremes as well as their implications in southwestern China (Yunnan, Guangxi and Guizhou Province), through analyzing the changing trends and probabilistic characteristics of six indices, including the consecutive dry days, consecutive wet days, annual total wet day precipitation, heavy precipitation days (R25), max 5 day precipitation amount (Rx5) and the rainy days (RDs). Results showed that the study area had generally become drier (regional mean annual precipitation decreased by 11.4 mm per decade) and experienced enhanced precipitation extremes in the past 60 years. Relatively higher risk of drought in Yuanan and flood in Guangxi was observed, respectively. However, the changing trends of the precipitation extremes were not spatially uniform: increasing risk of extreme wet events for Guangxi and Guizhou, and increasing probability of concurrent extreme wet and dry events for Yunnan. Meanwhile, trend analyses of the 10 year return levels of the selected indices implied that the severity of droughts decreased in Yunnan but increased significantly in Guangxi and Guizhou, and the severity of floods increased in Yunnan and Guangxi in the past decades. Hence, the policy-makers need to be aware of the different characterizations and the spatial heterogeneity of the precipitation extremes.
Subfields: Ecology, Evolution, Behavior and Systematics, Global and Planetary Change
View Paper: https://www.semanticscholar.org/paper/41254b0bd1370b20249d868c2295c28c51732368
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In Global and Planetary Change
Citations in the corpus
- Recent precipitation trends, flash floods and landslides in southern Brazil (2016, background): “It has to be noticed that high value of Rx1day, Rx5day and CWD may indicate potential susceptibility of a region to experience flood and landslides (Aristizábal et al 2011, Diakakis 2012, Liu et al 2014, Wu et al 2015).”