Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1016/j.atmosres.2019.104793 |
Changes in the summer extreme precipitation in the Jianghuai plum rain area and their relationship with the intensity anomalies of the south Asian high | |
Yin, Yixing1; Han, Cui1; Yang, Guanying2; Huang, Yihan1; Liu, Mengyang1; Wang, Xiaojun3,4 | |
2020-05-15 | |
发表期刊 | ATMOSPHERIC RESEARCH |
ISSN | 0169-8095 |
EISSN | 1873-2895 |
出版年 | 2020 |
卷号 | 236 |
文章类型 | Article |
语种 | 英语 |
国家 | Peoples R China |
英文摘要 | Based on the daily precipitation data of 66 stations in the Jianghuai plum rain area from 1960 to 2014 and the concurrent reanalysis data of NCEP/NCAR, this study utilized several techniques, including trend analysis, empirical orthogonal function (EOF) analysis and composite analysis, to investigate the spatio-temporal changes of the summer extreme precipitation in the area and their relationship with the intensity anomalies of the south Asian high (SAH). The main results are as follows: (1) The first eigenvector of the summer extreme precipitation indices (EPIs) of PQ90 and PNL90 exhibits a distribution pattern of uniform " + ", and the first principal component (PC1) shows a significant increasing trend. The second eigenvector generally exhibits a dipole pattern of "south +, north -", and the second principal component (PC2) of PQ90 shows a significant increasing trend. (2) The intensity index of the summer SAH (SAHI) underwent an abrupt change around 1977, with a subsequent increasing trend. The SAHI depicts a significant positive correlation with PC1 of PNL90 and PQ90, thus the EPIs are higher during the years with a strong SAH. (3) When the SAH shifts eastward (westward) and strengthens (weakens) and the location of the western Pacific subtropical high shifts westward (eastward), the mid-latitude region displays the characteristics of a meridional (zonal) circulation pattern, facilitating (hindering) the occurrence of extreme precipitation in the Jianghuai plum rain area. In addition, corresponding to the above-mentioned circulation patterns, vertical movement strengthens (weakens) over the Jianghuai plum rain area, and thus water vapor fluxes enhance and converge (weaken and diverge). Therefore, extreme precipitation is strengthened (weakened) in the study area. (4) The preceding changes in the atmospheric heat source over the eastern Qinghai-Tibet Plateau (one month in advance) affects the changes of the intensity of the following SAH significantly. The changes in the vertically integrated apparent heat sources |
英文关键词 | extreme precipitation south Asian high circulation anomaly atmospheric heat source Jianghuai plum rain area |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000525322900006 |
WOS关键词 | TROPICAL INDIAN-OCEAN ; TIBETAN PLATEAU ; INTERANNUAL VARIATION ; EAST-ASIA ; MONSOON ; CLIMATE ; VARIABILITY ; EVOLUTION ; EVENTS ; IMPACT |
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/278868 |
专题 | 地球科学 |
作者单位 | 1.Nanjing Univ Informat Sci & Technol, Sch Hydrol & Water Resources, Nanjing 210044, Peoples R China; 2.Anhui Inst Meteorol, Key Lab Atmospher Sci & Satellite Remote Sensing, Hefei 230031, Peoples R China; 3.Nanjing Hydraul Res Inst, State Key Lab Hydrol Water Resources & Hydraul En, Nanjing 210029, Peoples R China; 4.Minist Water Resources, Res Ctr Climate Change, Nanjing 210029, Peoples R China |
推荐引用方式 GB/T 7714 | Yin, Yixing,Han, Cui,Yang, Guanying,et al. Changes in the summer extreme precipitation in the Jianghuai plum rain area and their relationship with the intensity anomalies of the south Asian high[J]. ATMOSPHERIC RESEARCH,2020,236. |
APA | Yin, Yixing,Han, Cui,Yang, Guanying,Huang, Yihan,Liu, Mengyang,&Wang, Xiaojun.(2020).Changes in the summer extreme precipitation in the Jianghuai plum rain area and their relationship with the intensity anomalies of the south Asian high.ATMOSPHERIC RESEARCH,236. |
MLA | Yin, Yixing,et al."Changes in the summer extreme precipitation in the Jianghuai plum rain area and their relationship with the intensity anomalies of the south Asian high".ATMOSPHERIC RESEARCH 236(2020). |
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