Spatial and temporal evolution of drought characteristics across the Yellow River basin

Drought disasters restrict economic and social development. Understanding the evolution of the spatiotemporal characteristics of drought plays a vital role in basin risk response and management. Complex empirical orthogonal function analysis is widely used in meteorological research and is an import...

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Autores principales: Kai Zhou, Yimin Wang, Jianxia Chang, Shuai Zhou, Aijun Guo
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Lenguaje:EN
Publicado: Elsevier 2021
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Acceso en línea:https://doaj.org/article/364f6f50e36b48558778e359ab8a51bf
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spelling oai:doaj.org-article:364f6f50e36b48558778e359ab8a51bf2021-12-01T05:00:41ZSpatial and temporal evolution of drought characteristics across the Yellow River basin1470-160X10.1016/j.ecolind.2021.108207https://doaj.org/article/364f6f50e36b48558778e359ab8a51bf2021-11-01T00:00:00Zhttp://www.sciencedirect.com/science/article/pii/S1470160X21008724https://doaj.org/toc/1470-160XDrought disasters restrict economic and social development. Understanding the evolution of the spatiotemporal characteristics of drought plays a vital role in basin risk response and management. Complex empirical orthogonal function analysis is widely used in meteorological research and is an important tool for studying the spatial-temporal distribution structure of arid fields. This research aims to take the Yellow River Basin (YRB) as an example, separate the temporal and spatial distribution structure of drought based on the CEOF method, and explore the abrupt changes, trends, and periodic characteristics of different temporal and spatial distribution patterns. In addition, the cross-wavelet analysis reveals the lagging correlation relationship between the distribution pattern of the arid field in the basin and the Southern Oscillation factor. Results indicated that: (1) there are three typical spatial and temporal distribution patterns (full basin type, southeast-northwest reversed type and east-west reversed type) of the interannual scale drought in the YRB; (2) interannual drought evolution have obvious spatial propagation characteristics. (3) There are correlations between the three types and the Southern Oscillation on the temporal-frequency scale, and there is a time lag of 1-2a with the Southern Oscillation factor.Kai ZhouYimin WangJianxia ChangShuai ZhouAijun GuoElsevierarticleDroughtSpatial and temporal distributionSpatial propagationYellow River basinEcologyQH540-549.5ENEcological Indicators, Vol 131, Iss , Pp 108207- (2021)
institution DOAJ
collection DOAJ
language EN
topic Drought
Spatial and temporal distribution
Spatial propagation
Yellow River basin
Ecology
QH540-549.5
spellingShingle Drought
Spatial and temporal distribution
Spatial propagation
Yellow River basin
Ecology
QH540-549.5
Kai Zhou
Yimin Wang
Jianxia Chang
Shuai Zhou
Aijun Guo
Spatial and temporal evolution of drought characteristics across the Yellow River basin
description Drought disasters restrict economic and social development. Understanding the evolution of the spatiotemporal characteristics of drought plays a vital role in basin risk response and management. Complex empirical orthogonal function analysis is widely used in meteorological research and is an important tool for studying the spatial-temporal distribution structure of arid fields. This research aims to take the Yellow River Basin (YRB) as an example, separate the temporal and spatial distribution structure of drought based on the CEOF method, and explore the abrupt changes, trends, and periodic characteristics of different temporal and spatial distribution patterns. In addition, the cross-wavelet analysis reveals the lagging correlation relationship between the distribution pattern of the arid field in the basin and the Southern Oscillation factor. Results indicated that: (1) there are three typical spatial and temporal distribution patterns (full basin type, southeast-northwest reversed type and east-west reversed type) of the interannual scale drought in the YRB; (2) interannual drought evolution have obvious spatial propagation characteristics. (3) There are correlations between the three types and the Southern Oscillation on the temporal-frequency scale, and there is a time lag of 1-2a with the Southern Oscillation factor.
format article
author Kai Zhou
Yimin Wang
Jianxia Chang
Shuai Zhou
Aijun Guo
author_facet Kai Zhou
Yimin Wang
Jianxia Chang
Shuai Zhou
Aijun Guo
author_sort Kai Zhou
title Spatial and temporal evolution of drought characteristics across the Yellow River basin
title_short Spatial and temporal evolution of drought characteristics across the Yellow River basin
title_full Spatial and temporal evolution of drought characteristics across the Yellow River basin
title_fullStr Spatial and temporal evolution of drought characteristics across the Yellow River basin
title_full_unstemmed Spatial and temporal evolution of drought characteristics across the Yellow River basin
title_sort spatial and temporal evolution of drought characteristics across the yellow river basin
publisher Elsevier
publishDate 2021
url https://doaj.org/article/364f6f50e36b48558778e359ab8a51bf
work_keys_str_mv AT kaizhou spatialandtemporalevolutionofdroughtcharacteristicsacrosstheyellowriverbasin
AT yiminwang spatialandtemporalevolutionofdroughtcharacteristicsacrosstheyellowriverbasin
AT jianxiachang spatialandtemporalevolutionofdroughtcharacteristicsacrosstheyellowriverbasin
AT shuaizhou spatialandtemporalevolutionofdroughtcharacteristicsacrosstheyellowriverbasin
AT aijunguo spatialandtemporalevolutionofdroughtcharacteristicsacrosstheyellowriverbasin
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