Changes of extreme precipitation in the middle and lower reaches of the Yangtze River and their correlation with atmospheric circulation
Under the backdrop of climate change, the rising frequency and intensity of extreme precipitation events in the middle and lower Yangtze River (MLYR) region are causing serious consequences and economic losses. To assess regional risk and understand the impact of atmospheric circulation on extreme p...
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| Format: | Article |
| Language: | English |
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Frontiers Media S.A.
2023-03-01
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| Series: | Frontiers in Earth Science |
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| Online Access: | https://www.frontiersin.org/articles/10.3389/feart.2023.1162220/full |
| _version_ | 1797870424536645632 |
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| author | Jing Yang Ya Huang Ya Huang Guiping Li Yanping Li Yanping Li |
| author_facet | Jing Yang Ya Huang Ya Huang Guiping Li Yanping Li Yanping Li |
| author_sort | Jing Yang |
| collection | DOAJ |
| description | Under the backdrop of climate change, the rising frequency and intensity of extreme precipitation events in the middle and lower Yangtze River (MLYR) region are causing serious consequences and economic losses. To assess regional risk and understand the impact of atmospheric circulation on extreme precipitation, it's crucial to analyze the spatial and temporal fluctuations of these events, focusing on the time-frequency phase relationship. Using the observed precipitation data from 1979 to 2015, nine extreme precipitation indices were calculated and a trend analysis and wavelet coherence analysis were performed to evaluate their variation. The results show that: 1) an overall increase in the frequency, intensity, and duration of precipitation in the MLYR, with significant rises in the wet daily precipitation and highest precipitation amount in 1-day period; 2) a higher likelihood of extreme precipitation events in the southeast of the MLYR, and an uneven spatial distribution; 3) the Western Pacific Subtropical High (WPSH), the South China Sea high (SCSH), and the East Asian westerly jet (EAJ) all play a role in precipitation changes in the MLYR, with the WPSH having the most significant impact, followed by the SCSH, and the EAJ being weaker. The results deepen our understanding of the various characteristics and causes of extreme precipitation in the MLYR. |
| first_indexed | 2024-04-10T00:28:19Z |
| format | Article |
| id | doaj.art-02d4e45b50a24f80a45da3fbf18f8f87 |
| institution | Directory Open Access Journal |
| issn | 2296-6463 |
| language | English |
| last_indexed | 2024-04-10T00:28:19Z |
| publishDate | 2023-03-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Earth Science |
| spelling | doaj.art-02d4e45b50a24f80a45da3fbf18f8f872023-03-15T05:14:23ZengFrontiers Media S.A.Frontiers in Earth Science2296-64632023-03-011110.3389/feart.2023.11622201162220Changes of extreme precipitation in the middle and lower reaches of the Yangtze River and their correlation with atmospheric circulationJing Yang0Ya Huang1Ya Huang2Guiping Li3Yanping Li4Yanping Li5College of Oceanography, Hohai University, Nanjing, ChinaCollege of Oceanography, Hohai University, Nanjing, ChinaGuangxi Key Laboratory of Disaster Prevention and Engineering Safety, Guangxi University, Nanning, ChinaCollege of Oceanography, Hohai University, Nanjing, ChinaCollege of Oceanography, Hohai University, Nanjing, ChinaGlobal Institute for Water Security, University of Saskatchewan, Saskatoon, SK, CanadaUnder the backdrop of climate change, the rising frequency and intensity of extreme precipitation events in the middle and lower Yangtze River (MLYR) region are causing serious consequences and economic losses. To assess regional risk and understand the impact of atmospheric circulation on extreme precipitation, it's crucial to analyze the spatial and temporal fluctuations of these events, focusing on the time-frequency phase relationship. Using the observed precipitation data from 1979 to 2015, nine extreme precipitation indices were calculated and a trend analysis and wavelet coherence analysis were performed to evaluate their variation. The results show that: 1) an overall increase in the frequency, intensity, and duration of precipitation in the MLYR, with significant rises in the wet daily precipitation and highest precipitation amount in 1-day period; 2) a higher likelihood of extreme precipitation events in the southeast of the MLYR, and an uneven spatial distribution; 3) the Western Pacific Subtropical High (WPSH), the South China Sea high (SCSH), and the East Asian westerly jet (EAJ) all play a role in precipitation changes in the MLYR, with the WPSH having the most significant impact, followed by the SCSH, and the EAJ being weaker. The results deepen our understanding of the various characteristics and causes of extreme precipitation in the MLYR.https://www.frontiersin.org/articles/10.3389/feart.2023.1162220/fullextreme precipitationspatial-temporal variation characteristicsatmospheric circulationYangtze Riverclimate change |
| spellingShingle | Jing Yang Ya Huang Ya Huang Guiping Li Yanping Li Yanping Li Changes of extreme precipitation in the middle and lower reaches of the Yangtze River and their correlation with atmospheric circulation Frontiers in Earth Science extreme precipitation spatial-temporal variation characteristics atmospheric circulation Yangtze River climate change |
| title | Changes of extreme precipitation in the middle and lower reaches of the Yangtze River and their correlation with atmospheric circulation |
| title_full | Changes of extreme precipitation in the middle and lower reaches of the Yangtze River and their correlation with atmospheric circulation |
| title_fullStr | Changes of extreme precipitation in the middle and lower reaches of the Yangtze River and their correlation with atmospheric circulation |
| title_full_unstemmed | Changes of extreme precipitation in the middle and lower reaches of the Yangtze River and their correlation with atmospheric circulation |
| title_short | Changes of extreme precipitation in the middle and lower reaches of the Yangtze River and their correlation with atmospheric circulation |
| title_sort | changes of extreme precipitation in the middle and lower reaches of the yangtze river and their correlation with atmospheric circulation |
| topic | extreme precipitation spatial-temporal variation characteristics atmospheric circulation Yangtze River climate change |
| url | https://www.frontiersin.org/articles/10.3389/feart.2023.1162220/full |
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