Causes of the Extreme Hot Midsummer in Central and South China during 2017: Role of the Western Tropical Pacific Warming
文献类型：期刊论文
| 作者 | Wen, Zhiping5,6; Chen, Ruidan6; Lu, Riyu1,4; Wang, Chunzai3 |
| 刊名 | ADVANCES IN ATMOSPHERIC SCIENCES
 |
| 出版日期 | 2019 |
| 卷号 | 36期号:5页码:465 |
| 关键词 | hot midsummer Central and South China western tropical Pacific decadal to long-term changes |
| ISSN号 | 0256-1530 |
| DOI | 10.1007/s00376-018-8177-4 |
| 英文摘要 | This study investigates why an extreme hot midsummer occurred in Central and South China (CSC) during 2017. It is shown that the western North Pacific subtropical high (WNPSH) was abnormally intensified and westward-extending, resulting in anomalous high pressure and consequent extreme heat over CSC. The abnormal WNPSH was favored by the warming of the western tropical Pacific (WTP), which was unrelated to ENSO and manifested its own individual effect. The WTP warming enhanced the convection in-situ and led to anomalous high pressure over CSC via a local meridional circulation. The influence of the WTP was confirmed by CAM4 model experiments. A comparison between the 2017 midsummer and 2010 midsummer (with a stronger WNPSH but weaker extreme heat) indicated that the influence of the WNPSH on extreme heat can be modulated by the associated precipitation in the northwestern flank. The role of the WTP was verified by regression analyses on the interannual variation of the WTP sea surface temperature anomaly (SSTA). On the other hand, the WTP has undergone prominent warming during the past few decades, resulting from decadal to long-term changes and favoring extreme warm conditions. Through a mechanism similar to the interannual variation, the decadal to long-term changes have reinforced the influence of WTP warming on the temperature over CSC, contributing to the more frequent hot midsummers recently. It is estimated that more than 50% of the temperature anomaly over CSC in the 2017 midsummer was due to the WTP warming, and 40% was related to the decadal to long-term changes of the WTP SSTA. |
| 源URL | [http://ir.scsio.ac.cn/handle/344004/17737]  |
| 专题 | 南海海洋研究所_热带海洋环境国家重点实验室(LTO) |
| 作者单位 | 1.Fudan Univ, Inst Atmospher Sci, Dept Atmospher & Ocean Sci, Shanghai 200438, Peoples R China 2.Jiangsu Collaborat Innovat Ctr Climate Change, Nanjing 210023, Jiangsu, Peoples R China 3.Chinese Acad Sci, Inst Atmospher Phys, State Key Lab Numer Modeling Atmospher Sci & Geop, Beijing 100029, Peoples R China 4.Chinese Acad Sci, South China Sea Inst Oceanol, State Key Lab Trop Oceanog, Guangzhou 510301, Guangdong, Peoples R China 5.Sun Yat Sen Univ, Ctr Monsoon & Environm Res, Guangdong Prov Key Lab Climate Change & Nat Disas, Sch Atmospher Sci, Guangzhou 510275, Guangdong, Peoples R China 6.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wen, Zhiping,Chen, Ruidan,Lu, Riyu,et al. Causes of the Extreme Hot Midsummer in Central and South China during 2017: Role of the Western Tropical Pacific Warming[J]. ADVANCES IN ATMOSPHERIC SCIENCES,2019,36(5):465, 478. |
| APA | Wen, Zhiping,Chen, Ruidan,Lu, Riyu,&Wang, Chunzai.(2019).Causes of the Extreme Hot Midsummer in Central and South China during 2017: Role of the Western Tropical Pacific Warming.ADVANCES IN ATMOSPHERIC SCIENCES,36(5),465. |
| MLA | Wen, Zhiping,et al."Causes of the Extreme Hot Midsummer in Central and South China during 2017: Role of the Western Tropical Pacific Warming".ADVANCES IN ATMOSPHERIC SCIENCES 36.5(2019):465. |
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来源：南海海洋研究所
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