Spatiotemporal variation and multivariate controls of short‐cycle drought–flood abrupt alteration: A case in the <scp>Qinling‐Daba</scp> Mountains of China
Abstract A comprehensive understanding of the patterns of drought and flood alternation in adjacent months is essential for enabling climate adaptation and mitigation strategies. However, there is a paucity of knowledge regarding short‐cycle drought–flood abrupt alteration (s‐DFAA) and its responses...
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crwiley:10.1002/joc.8115 2023-10-29T02:34:39+01:00 Spatiotemporal variation and multivariate controls of short‐cycle drought–flood abrupt alteration: A case in the <scp>Qinling‐Daba</scp> Mountains of China Song, Xiaoyan Lei, Xiaoping Ma, Rui Hou, Jingzhi Liu, Wenbin National Key Research and Development Program of China National Natural Science Foundation of China 2023 http://dx.doi.org/10.1002/joc.8115 https://rmets.onlinelibrary.wiley.com/doi/pdf/10.1002/joc.8115 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor International Journal of Climatology volume 43, issue 10, page 4756-4769 ISSN 0899-8418 1097-0088 Atmospheric Science journal-article 2023 crwiley https://doi.org/10.1002/joc.8115 2023-10-02T17:07:55Z Abstract A comprehensive understanding of the patterns of drought and flood alternation in adjacent months is essential for enabling climate adaptation and mitigation strategies. However, there is a paucity of knowledge regarding short‐cycle drought–flood abrupt alteration (s‐DFAA) and its responses to multiple environmental factors at various timescales. This is because of the inadequate formula construction of the existing short‐cycle drought–flood abrupt alteration index (SDFAI), such as the inability to introduce drought standards. To accurately capture the s‐DFAA's characteristics in the Qinling‐Daba Mountains (Qinba Mountains), we proposed a revised SDFAI (R‐SDFAI), which incorporates the standardized precipitation index (SPI) and allows for the customization of drought standards. Next, we used wavelet transform coherence and multiple wavelet coherence to investigate the timescale relationships between s‐DFAA events and their influence factors such as relative humidity, sunshine duration, temperature, evaporation, Arctic Oscillation (AO), Niño3.4 SSTA Index (Niño3.4), Total Sunspot Number Index (TSNI) and Pacific Decadal Oscillation Index (PDO). Our results showed that the R‐SDFAI outperformed traditional SDFAI in capturing s‐DFAA events and characterizing their severity. Furthermore, s‐DFAA events identified by R‐SDFAI at different levels (i.e., mild, moderate, severe, extreme and total) displayed insignificant downward trends. Spatially, there were more s‐DFAA events in the east than the west. Wavelet analysis indicated that meteorological factors and teleconnections significantly impact s‐DFAA events at large timescales, though their driving mechanisms differed substantially. Among meteorological factors, single relative humidity and its related combinations exhibited relatively high percent area of significant coherence (PASC, ranging from 17.47 to 29.46). Each teleconnection and its combinations are irreplaceable, with PASC values always increasing with the number of variables. The PASC ranges from ... Article in Journal/Newspaper Arctic Wiley Online Library (via Crossref) International Journal of Climatology 43 10 4756 4769 |
institution |
Open Polar |
collection |
Wiley Online Library (via Crossref) |
op_collection_id |
crwiley |
language |
English |
topic |
Atmospheric Science |
spellingShingle |
Atmospheric Science Song, Xiaoyan Lei, Xiaoping Ma, Rui Hou, Jingzhi Liu, Wenbin Spatiotemporal variation and multivariate controls of short‐cycle drought–flood abrupt alteration: A case in the <scp>Qinling‐Daba</scp> Mountains of China |
topic_facet |
Atmospheric Science |
description |
Abstract A comprehensive understanding of the patterns of drought and flood alternation in adjacent months is essential for enabling climate adaptation and mitigation strategies. However, there is a paucity of knowledge regarding short‐cycle drought–flood abrupt alteration (s‐DFAA) and its responses to multiple environmental factors at various timescales. This is because of the inadequate formula construction of the existing short‐cycle drought–flood abrupt alteration index (SDFAI), such as the inability to introduce drought standards. To accurately capture the s‐DFAA's characteristics in the Qinling‐Daba Mountains (Qinba Mountains), we proposed a revised SDFAI (R‐SDFAI), which incorporates the standardized precipitation index (SPI) and allows for the customization of drought standards. Next, we used wavelet transform coherence and multiple wavelet coherence to investigate the timescale relationships between s‐DFAA events and their influence factors such as relative humidity, sunshine duration, temperature, evaporation, Arctic Oscillation (AO), Niño3.4 SSTA Index (Niño3.4), Total Sunspot Number Index (TSNI) and Pacific Decadal Oscillation Index (PDO). Our results showed that the R‐SDFAI outperformed traditional SDFAI in capturing s‐DFAA events and characterizing their severity. Furthermore, s‐DFAA events identified by R‐SDFAI at different levels (i.e., mild, moderate, severe, extreme and total) displayed insignificant downward trends. Spatially, there were more s‐DFAA events in the east than the west. Wavelet analysis indicated that meteorological factors and teleconnections significantly impact s‐DFAA events at large timescales, though their driving mechanisms differed substantially. Among meteorological factors, single relative humidity and its related combinations exhibited relatively high percent area of significant coherence (PASC, ranging from 17.47 to 29.46). Each teleconnection and its combinations are irreplaceable, with PASC values always increasing with the number of variables. The PASC ranges from ... |
author2 |
National Key Research and Development Program of China National Natural Science Foundation of China |
format |
Article in Journal/Newspaper |
author |
Song, Xiaoyan Lei, Xiaoping Ma, Rui Hou, Jingzhi Liu, Wenbin |
author_facet |
Song, Xiaoyan Lei, Xiaoping Ma, Rui Hou, Jingzhi Liu, Wenbin |
author_sort |
Song, Xiaoyan |
title |
Spatiotemporal variation and multivariate controls of short‐cycle drought–flood abrupt alteration: A case in the <scp>Qinling‐Daba</scp> Mountains of China |
title_short |
Spatiotemporal variation and multivariate controls of short‐cycle drought–flood abrupt alteration: A case in the <scp>Qinling‐Daba</scp> Mountains of China |
title_full |
Spatiotemporal variation and multivariate controls of short‐cycle drought–flood abrupt alteration: A case in the <scp>Qinling‐Daba</scp> Mountains of China |
title_fullStr |
Spatiotemporal variation and multivariate controls of short‐cycle drought–flood abrupt alteration: A case in the <scp>Qinling‐Daba</scp> Mountains of China |
title_full_unstemmed |
Spatiotemporal variation and multivariate controls of short‐cycle drought–flood abrupt alteration: A case in the <scp>Qinling‐Daba</scp> Mountains of China |
title_sort |
spatiotemporal variation and multivariate controls of short‐cycle drought–flood abrupt alteration: a case in the <scp>qinling‐daba</scp> mountains of china |
publisher |
Wiley |
publishDate |
2023 |
url |
http://dx.doi.org/10.1002/joc.8115 https://rmets.onlinelibrary.wiley.com/doi/pdf/10.1002/joc.8115 |
genre |
Arctic |
genre_facet |
Arctic |
op_source |
International Journal of Climatology volume 43, issue 10, page 4756-4769 ISSN 0899-8418 1097-0088 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1002/joc.8115 |
container_title |
International Journal of Climatology |
container_volume |
43 |
container_issue |
10 |
container_start_page |
4756 |
op_container_end_page |
4769 |
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1781057318002098176 |