Synchronized Structure and Teleconnection Patterns of Meteorological Drought Events over the Yangtze River Basin, China
Investigating the synchronized structure and teleconnection patterns of meteorological drought events (MDEs) contributes to elucidating drought’s evolution. In this study, the CN05.1 gridded meteorological dataset from 1961 to 2021 was utilized to calculate the 3-month standardized precipitation eva...
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ftdoajarticles:oai:doaj.org/article:df267e5eb7284a3882e7332ae0ac54be 2023-12-10T09:46:16+01:00 Synchronized Structure and Teleconnection Patterns of Meteorological Drought Events over the Yangtze River Basin, China Lei Liu Chao Gao Zhanliang Zhu Xiongpeng Tang Dongjie Zhang Silong Zhang 2023-10-01T00:00:00Z https://doi.org/10.3390/w15213707 https://doaj.org/article/df267e5eb7284a3882e7332ae0ac54be EN eng MDPI AG https://www.mdpi.com/2073-4441/15/21/3707 https://doaj.org/toc/2073-4441 doi:10.3390/w15213707 2073-4441 https://doaj.org/article/df267e5eb7284a3882e7332ae0ac54be Water, Vol 15, Iss 21, p 3707 (2023) meteorological drought event synchronization complex network teleconnection Yangtze River Basin Hydraulic engineering TC1-978 Water supply for domestic and industrial purposes TD201-500 article 2023 ftdoajarticles https://doi.org/10.3390/w15213707 2023-11-12T01:35:50Z Investigating the synchronized structure and teleconnection patterns of meteorological drought events (MDEs) contributes to elucidating drought’s evolution. In this study, the CN05.1 gridded meteorological dataset from 1961 to 2021 was utilized to calculate the 3-month standardized precipitation evapotranspiration index (SPEI-3) for each grid in the Yangtze River Basin (YRB). Based on these SPEI-3 series, the grid-based MDEs were then extracted. Subsequently, event synchronization and complex networks were employed to construct the MDE synchronized network over the YRB. This network was used to identify the MDEs’ topological structure, synchronized subregions, and representative grids. Finally, the MDE characteristics and MDE teleconnection patterns of individual subregions were investigated. The results of the MDE topological structure show that the northeastern portion of the YRB tends to experience widespread MDEs, while specific areas in the upper reaches are prone to localized MDEs. Synchronous MDEs mainly propagate along the central pathway and the eastern pathway, which display relatively low MDE spatial coherence. The YRB is partitioned into eight MDE synchronized subregions, each exhibiting distinct characteristics in terms of the frequency, duration, total severity, and peak of MDEs, as well as MDE temporal frequency distributions. Among all teleconnection factors, El Niño–Southern Oscillation (ENSO) exerts a strong influence on MDEs in all subregions, the Pacific Decadal Oscillation (PDO) shows a significant association with MDEs in all subregions except for Subregion 3 in the southeast, the North Atlantic Oscillation (NAO) displays a significant influence on MDEs in the southern subregions of the YRB, and the Arctic Oscillation (AO) has a more pronounced influence on MDEs in the northern subregions. This study provides valuable insights on drought’s evolution within the YRB and offers guidance to policymakers for advanced preventive measures. Article in Journal/Newspaper Arctic North Atlantic North Atlantic oscillation Directory of Open Access Journals: DOAJ Articles Arctic Pacific Water 15 21 3707 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
meteorological drought event synchronization complex network teleconnection Yangtze River Basin Hydraulic engineering TC1-978 Water supply for domestic and industrial purposes TD201-500 |
spellingShingle |
meteorological drought event synchronization complex network teleconnection Yangtze River Basin Hydraulic engineering TC1-978 Water supply for domestic and industrial purposes TD201-500 Lei Liu Chao Gao Zhanliang Zhu Xiongpeng Tang Dongjie Zhang Silong Zhang Synchronized Structure and Teleconnection Patterns of Meteorological Drought Events over the Yangtze River Basin, China |
topic_facet |
meteorological drought event synchronization complex network teleconnection Yangtze River Basin Hydraulic engineering TC1-978 Water supply for domestic and industrial purposes TD201-500 |
description |
Investigating the synchronized structure and teleconnection patterns of meteorological drought events (MDEs) contributes to elucidating drought’s evolution. In this study, the CN05.1 gridded meteorological dataset from 1961 to 2021 was utilized to calculate the 3-month standardized precipitation evapotranspiration index (SPEI-3) for each grid in the Yangtze River Basin (YRB). Based on these SPEI-3 series, the grid-based MDEs were then extracted. Subsequently, event synchronization and complex networks were employed to construct the MDE synchronized network over the YRB. This network was used to identify the MDEs’ topological structure, synchronized subregions, and representative grids. Finally, the MDE characteristics and MDE teleconnection patterns of individual subregions were investigated. The results of the MDE topological structure show that the northeastern portion of the YRB tends to experience widespread MDEs, while specific areas in the upper reaches are prone to localized MDEs. Synchronous MDEs mainly propagate along the central pathway and the eastern pathway, which display relatively low MDE spatial coherence. The YRB is partitioned into eight MDE synchronized subregions, each exhibiting distinct characteristics in terms of the frequency, duration, total severity, and peak of MDEs, as well as MDE temporal frequency distributions. Among all teleconnection factors, El Niño–Southern Oscillation (ENSO) exerts a strong influence on MDEs in all subregions, the Pacific Decadal Oscillation (PDO) shows a significant association with MDEs in all subregions except for Subregion 3 in the southeast, the North Atlantic Oscillation (NAO) displays a significant influence on MDEs in the southern subregions of the YRB, and the Arctic Oscillation (AO) has a more pronounced influence on MDEs in the northern subregions. This study provides valuable insights on drought’s evolution within the YRB and offers guidance to policymakers for advanced preventive measures. |
format |
Article in Journal/Newspaper |
author |
Lei Liu Chao Gao Zhanliang Zhu Xiongpeng Tang Dongjie Zhang Silong Zhang |
author_facet |
Lei Liu Chao Gao Zhanliang Zhu Xiongpeng Tang Dongjie Zhang Silong Zhang |
author_sort |
Lei Liu |
title |
Synchronized Structure and Teleconnection Patterns of Meteorological Drought Events over the Yangtze River Basin, China |
title_short |
Synchronized Structure and Teleconnection Patterns of Meteorological Drought Events over the Yangtze River Basin, China |
title_full |
Synchronized Structure and Teleconnection Patterns of Meteorological Drought Events over the Yangtze River Basin, China |
title_fullStr |
Synchronized Structure and Teleconnection Patterns of Meteorological Drought Events over the Yangtze River Basin, China |
title_full_unstemmed |
Synchronized Structure and Teleconnection Patterns of Meteorological Drought Events over the Yangtze River Basin, China |
title_sort |
synchronized structure and teleconnection patterns of meteorological drought events over the yangtze river basin, china |
publisher |
MDPI AG |
publishDate |
2023 |
url |
https://doi.org/10.3390/w15213707 https://doaj.org/article/df267e5eb7284a3882e7332ae0ac54be |
geographic |
Arctic Pacific |
geographic_facet |
Arctic Pacific |
genre |
Arctic North Atlantic North Atlantic oscillation |
genre_facet |
Arctic North Atlantic North Atlantic oscillation |
op_source |
Water, Vol 15, Iss 21, p 3707 (2023) |
op_relation |
https://www.mdpi.com/2073-4441/15/21/3707 https://doaj.org/toc/2073-4441 doi:10.3390/w15213707 2073-4441 https://doaj.org/article/df267e5eb7284a3882e7332ae0ac54be |
op_doi |
https://doi.org/10.3390/w15213707 |
container_title |
Water |
container_volume |
15 |
container_issue |
21 |
container_start_page |
3707 |
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1784889627607302144 |