Change-Point Analysis of Precipitation and Drought Extremes in China over the Past 50 Years

Liu, M; Liu, P; Guo, Y; Wang, Y; Geng, X; Nie, Z; Yu, Y

Change-Point Analysis of Precipitation and Drought Extremes in China over the Past 50 Years

Liu, M

Liu, P Guo, Y Wang, Y Geng, X Nie, Z Yu, Y

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Publisher:: MDPI AG
Publication Type:: Journal Article
Citation:: Atmosphere, 11 (1), pp. 11 - 11

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Field	Value	Language
dc.contributor.author	Liu, M https://orcid.org/0000-0001-5418-1220	en_US
dc.contributor.author	Liu, P	en_US
dc.contributor.author	Guo, Y	en_US
dc.contributor.author	Wang, Y	en_US
dc.contributor.author	Geng, X	en_US
dc.contributor.author	Nie, Z	en_US
dc.contributor.author	Yu, Y https://orcid.org/0000-0001-9592-8191	en_US
dc.date.accessioned	2020-03-24T05:49:05Z
dc.date.available	2020-03-24T05:49:05Z
dc.identifier.citation	Atmosphere, 11 (1), pp. 11 - 11	en_US
dc.identifier.uri	http://hdl.handle.net/10453/139505
dc.description.abstract	<jats:p>Increases in climate extremes and their impacts have attracted global attention recently. In this study, the change-point years of precipitation extremes (PEs) and drought extremes (DEs) were investigated by Moving t-Test at 500 stations across the six regions in China. The detailed temporal change processes of them were demonstrated by the cumulative deviation method based on the data from nine typical stations. The results showed that: 1) DEs were more significantly and widely increased than PEs, the stations with increasing trends of PEs and DEs accounted for greater than 52.6% and 61.6% of the total, respectively; 2) increasing trends of DEs were mainly distributed in the east of Hu Huanyong Line. In this area, the increasing change-point years of DEs often occurred in the early 1980s in the south of the Yangzi River, while occurred in the 1990s in the north of the Yangzi River; 3) increasing trends of PEs were mainly distributed in Qing-Tibet Platen, Northwest China, and the southeastern area of Hu Huanyong Line. In these areas, the increasing change-point years of PEs often occurred around 1990 in the southeast of Hu Huanyong Line, while often occurred in the early 1980s in Qing-Tibet Platen. The results indicated that the area in the southeast of Hu Huanyong Line was under the threats of both PEs and DEs, this may produce severe impacts on agriculture, environment, water resources management, human society, etc.</jats:p>	en_US
dc.language	en	en_US
dc.publisher	MDPI AG	en_US
dc.relation.ispartof	Atmosphere	en_US
dc.relation.isbasedon	10.3390/atmos11010011	en_US
dc.title	Change-Point Analysis of Precipitation and Drought Extremes in China over the Past 50 Years	en_US
dc.type	Journal Article
utslib.citation.volume	1	en_US
utslib.citation.volume	11	en_US
utslib.for	0401 Atmospheric Sciences	en_US
utslib.for	0502 Environmental Science and Management	en_US
pubs.embargo.period	Not known	en_US
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology/School of Civil and Environmental Engineering
utslib.copyright.status	open_access
pubs.issue	1	en_US
pubs.publication-status	Published online	en_US
pubs.volume	11	en_US

Abstract:

Increases in climate extremes and their impacts have attracted global attention recently. In this study, the change-point years of precipitation extremes (PEs) and drought extremes (DEs) were investigated by Moving t-Test at 500 stations across the six regions in China. The detailed temporal change processes of them were demonstrated by the cumulative deviation method based on the data from nine typical stations. The results showed that: 1) DEs were more significantly and widely increased than PEs, the stations with increasing trends of PEs and DEs accounted for greater than 52.6% and 61.6% of the total, respectively; 2) increasing trends of DEs were mainly distributed in the east of Hu Huanyong Line. In this area, the increasing change-point years of DEs often occurred in the early 1980s in the south of the Yangzi River, while occurred in the 1990s in the north of the Yangzi River; 3) increasing trends of PEs were mainly distributed in Qing-Tibet Platen, Northwest China, and the southeastern area of Hu Huanyong Line. In these areas, the increasing change-point years of PEs often occurred around 1990 in the southeast of Hu Huanyong Line, while often occurred in the early 1980s in Qing-Tibet Platen. The results indicated that the area in the southeast of Hu Huanyong Line was under the threats of both PEs and DEs, this may produce severe impacts on agriculture, environment, water resources management, human society, etc.

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http://hdl.handle.net/10453/139505