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厄尔尼诺南方涛动对泰国东北部降水变率的影响。

Influence of El Niño southern oscillation on precipitation variability in Northeast Thailand.

作者信息

Chueasa Bunthid, Humphries Usa Wannasingha, Waqas Muhammad

机构信息

Department of Mathematics, Faculty of Science, King Mongkut's University of Technology Thonburi (KMUTT), Bangkok 10140, Thailand.

The Joint Graduate School of Energy and Environment (JGSEE), King Mongkut's University of Technology Thonburi (KMUTT), Bangkok 10140, Thailand.

出版信息

MethodsX. 2024 Sep 10;13:102954. doi: 10.1016/j.mex.2024.102954. eCollection 2024 Dec.

DOI:10.1016/j.mex.2024.102954
PMID:39315397
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC11417571/
Abstract

This study investigates the influence of El Niño Southern Oscillation (ENSO) on monthly precipitation anomaly (PPTA) in Northeast Thailand using 30 years (1993-2022) data obtained from 27 weather stations of the Thai Meteorological Department (TMD). Pearson correlation analysis elucidates the relationship between ENSO indices and PPTA. Results reveal significant correlations between ENSO indices and PPTA, providing insights into their intricate relationship. La Niña events have a stronger relationship with PPTA than El Niño events, with notable correlations observed.•Strong La Niña phases, PPTA tends to increase across Northeast Thailand when Niño 3, 3.4, and 4 are more strongly negative -0.64, -0.50, and -0.65, respectively. These correlations provide valuable insights into the hydrological influence of ENSO in Thailand.•After the ENSO event, there appears to be a 4-5 month lag period from the impact on PPTA that shows a higher correlation.•Wavelet transform coherence (WTC) analysis dissects the temporal and frequency-specific nature of the relationship between ENSO and PPTA found during the frequency of 2-7 years. These findings underscore the importance of studying regional variations in ENSO impacts for PPTA in Northeast Thailand.

摘要

本研究利用泰国气象部门(TMD)27个气象站提供的30年(1993 - 2022年)数据,调查了厄尔尼诺 - 南方涛动(ENSO)对泰国东北部月降水异常(PPTA)的影响。皮尔逊相关分析阐明了ENSO指数与PPTA之间的关系。结果显示ENSO指数与PPTA之间存在显著相关性,揭示了它们之间的复杂关系。拉尼娜事件与PPTA的关系比厄尔尼诺事件更强,存在显著相关性。•在强烈的拉尼娜阶段,当尼诺3区、3.4区和4区分别更强烈地呈现负值 -0.64、-0.50和 -0.65时,泰国东北部各地的PPTA往往会增加。这些相关性为ENSO对泰国水文的影响提供了有价值的见解。•ENSO事件之后,对PPTA的影响似乎存在4 - 5个月的滞后,在此期间相关性更高。•小波变换相干(WTC)分析剖析了在2 - 7年频率范围内发现的ENSO与PPTA之间关系的时间和频率特性。这些发现强调了研究ENSO对泰国东北部PPTA影响的区域差异的重要性。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5adf/11417571/bab6178eab4b/gr8.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5adf/11417571/dc76363c9866/ga1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5adf/11417571/2a86250646cc/gr1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5adf/11417571/c3c00e9c52d1/gr2.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5adf/11417571/bfe3fccd35eb/gr3a.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5adf/11417571/ad11523682e8/gr4.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5adf/11417571/043c8dc09348/gr5.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5adf/11417571/fe5eec8cba4a/gr6.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5adf/11417571/bab6178eab4b/gr8.jpg

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