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DOI | 10.1007/s00382-017-3848-x |
Predictability of summer extreme precipitation days over eastern China | |
Li, Juan1,2; Wang, Bin1,2 | |
2018-12-01 | |
发表期刊 | CLIMATE DYNAMICS |
ISSN | 0930-7575 |
EISSN | 1432-0894 |
出版年 | 2018 |
卷号 | 51页码:4543-4554 |
文章类型 | Article;Proceedings Paper |
语种 | 英语 |
国家 | Peoples R China; USA |
英文摘要 | Extreme precipitation events have severe impacts on human activity and natural environment, but prediction of extreme precipitation events remains a considerable challenge. The present study aims to explore the sources of predictability and to estimate the predictability of the summer extreme precipitation days (EPDs) over eastern China. Based on the region- and season-dependent variability of EPDs, all stations over eastern China are divided into two domains: South China (SC) and northern China (NC). Two domain-averaged EPDs indices during their local high EPDs seasons (May-June for SC and July-August for NC) are therefore defined. The simultaneous lower boundary anomalies associated with each EPDs index are examined, and we find: (a) the increased EPDs over SC are related to a rapid decaying El Nino and controlled by Philippine Sea anticyclone anomalies in May-June; (b) the increased EPDs over NC are accompanied by a developing La Nina and anomalous zonal sea level pressure contrast between the western North Pacific subtropical high and East Asian low in July-August. Tracking back the origins of these boundary anomalies, one or two physically meaningful predictors are detected for each regional EPDs index. The causative relationships between the predictors and the corresponding EPDs over each region are discussed using lead-lag correlation analyses. Using these selected predictors, a set of Physics-based Empirical models is derived. The 13-year (2001-2013) independent forecast shows significant temporal correlation skills of 0.60 and 0.74 for the EPDs index of SC and NC, respectively, providing an estimation of the predictability for summer EPDs over eastern China. |
英文关键词 | Extreme precipitation Eastern China Physics-based empirical model Seasonal predictability Seasonal prediction East Asian summer monsoon |
领域 | 气候变化 |
收录类别 | SCI-E ; ISTP |
WOS记录号 | WOS:000451725600037 |
WOS关键词 | ATMOSPHERIC CIRCULATION ; SEASONAL PREDICTION ; RAINFALL ANOMALIES ; CLIMATE EVENTS ; INDIAN-OCEAN ; PART I ; MONSOON ; TRENDS ; TEMPERATURE ; VARIABILITY |
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/35570 |
专题 | 气候变化 |
作者单位 | 1.Nanjing Univ Informat Sci & Technol, Earth Syst Modeling Ctr, Nanjing, Jiangsu, Peoples R China; 2.Univ Hawaii Manoa, Dept Atmospher Sci, Int Pacific Res Ctr, SOEST, Honolulu, HI 96822 USA |
推荐引用方式 GB/T 7714 | Li, Juan,Wang, Bin. Predictability of summer extreme precipitation days over eastern China[J]. CLIMATE DYNAMICS,2018,51:4543-4554. |
APA | Li, Juan,&Wang, Bin.(2018).Predictability of summer extreme precipitation days over eastern China.CLIMATE DYNAMICS,51,4543-4554. |
MLA | Li, Juan,et al."Predictability of summer extreme precipitation days over eastern China".CLIMATE DYNAMICS 51(2018):4543-4554. |
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