Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1016/j.atmosres.2019.104685 |
Dynamic changes of the dryness/wetness characteristics in the largest river basin of South China and their possible climate driving factors | |
Wu, Jiefeng1,2; Tan, Xuezhi1,2,3; Chen, Xiaohong1,2,3; Lin, Kairong1,2,3 | |
2020-02-01 | |
发表期刊 | ATMOSPHERIC RESEARCH |
ISSN | 0169-8095 |
EISSN | 1873-2895 |
出版年 | 2020 |
卷号 | 232 |
文章类型 | Article |
语种 | 英语 |
国家 | Peoples R China |
英文摘要 | Although numerous studies have investigated the evolution of regional dryness/wetness, few studies have discussed the association with climatic extremes and large-scale ocean-atmosphere teleconnections from the perspectives of the duration and severity of dryness/wetness. This study took the largest river basin in South China, namely, Pearl River basin (PRB), as a study example. We use the Standardized Precipitation Evapotranspiration Index (SPEI) and the run theory to extract the dryness/wetness characteristics (i.e., duration and severity). Then, the one-dimensional (i.e., Spearman rank correlation) and multi-dimensional (i.e., cross wavelet transform (XWT) and partial wavelet coherence analysis (PWC)) correlation methods were applied to explore the dryness/wetness characteristics with association of climate extreme indices and teleconnection patterns during the past few years (1960-2015). The results show that two dominant sub-regions (i.e., northwestern and southeastern) are showing distinct spatial differences in the temporal evolution of the duration and severity of dryness/wetness, including the change trends, periodical oscillations, and association with climatic extremes and teleconnection patterns in the PRB. The most regional differences in the trends of the dryness/wetness could be explained by the temperature variability and precipitation extremes. The multi-dimensional analysis method especially the PWC is superior to the one-dimensional signal method in the analysis of the time-frequency correlations between dryness/wetness evolution and large-scale ocean-atmosphere teleconnections. For PRB, the teleconnections of Pacific Decadal Oscillation (PDO) and especially with El Nino-Southern Oscillation (ENSO) were highly associated with the evolution of the dryness/wetness and occurred principally at the inter-annual (32-64 months) and inter-decadal (128-256 months) scales. |
英文关键词 | Dryness/wetness Drought duration and severity Climate extremes Teleconnection ENSO Pearl River basin |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000513179100009 |
WOS关键词 | EXTREME PRECIPITATION ; WAVELET COHERENCE ; DROUGHT ; VARIABILITY ; RISK ; ENSO ; PROVINCE ; FLOODS ; PROJECTIONS ; SEVERITY |
WOS类目 | Meteorology & Atmospheric Sciences |
WOS研究方向 | Meteorology & Atmospheric Sciences |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/278782 |
专题 | 地球科学 |
作者单位 | 1.Sun Yat Sen Univ, Ctr Water Resources & Environm, Guangzhou, Peoples R China; 2.Sun Yat Sen Univ, Guangdong Engn Technol Res Ctr Water Secur Regula, Guangzhou, Peoples R China; 3.Sun Yat Sen Univ, Key Lab Water Cycle & Water Secur Southern China, Guangzhou, Peoples R China |
推荐引用方式 GB/T 7714 | Wu, Jiefeng,Tan, Xuezhi,Chen, Xiaohong,et al. Dynamic changes of the dryness/wetness characteristics in the largest river basin of South China and their possible climate driving factors[J]. ATMOSPHERIC RESEARCH,2020,232. |
APA | Wu, Jiefeng,Tan, Xuezhi,Chen, Xiaohong,&Lin, Kairong.(2020).Dynamic changes of the dryness/wetness characteristics in the largest river basin of South China and their possible climate driving factors.ATMOSPHERIC RESEARCH,232. |
MLA | Wu, Jiefeng,et al."Dynamic changes of the dryness/wetness characteristics in the largest river basin of South China and their possible climate driving factors".ATMOSPHERIC RESEARCH 232(2020). |
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