Potential causes of megapluvials in the Yangtze-Huaihe River valley over the last millennium
文献类型：期刊论文
| 作者 | Bai, Mengxin; Zheng, Jingyun1,5; Zhang, Liang1,5; Xing, Pei; Wu, Maowei1; Hao, Zhixin1,4,5; Du, Wupeng3 |
| 刊名 | GLOBAL AND PLANETARY CHANGE
 |
| 出版日期 | 2023-12-01 |
| 卷号 | 231页码:104292 |
| 关键词 | Yangtze -Huaihe River valley Megapluvial Last millennium Air -land interaction Teleconnection |
| DOI | 10.1016/j.gloplacha.2023.104292 |
| 产权排序 | 2 |
| 文献子类 | Article |
| 英文摘要 | The potential causes of megapluvials over Yangtze-Huaihe River valley (YHRV) during the last millennium were investigated using the Community Earth System Model-Last Millennium Ensemble (CESM-LME) simulation data and multiple proxy data (i.e., reconstruction and paleoclimate assimilation data). Herein, we first depicted the spatial hydroclimatic pattern over the Northern Hemisphere when megapluvials occurred in the YHRV during the last millennium. The proxy and simulation data both showed that megapluvials in YHRV were accompanied by extensive decadal drought in western Asia and northwestern India, also located in mid to low latitudes. Then, by diagnosing the dynamic processes, we found that the baroclinic structure over western Asia and northwestern India caused anomalous geopotential heights, and hence triggered the negative phase of the Circumglobal Teleconnection (CGT). The eastwards wave train at mid-latitudes disturbed by the CGT mode, triggered lower-level northerlies and upper-level southerlies over the northern part of the YHRV and, as a consequence, led to anomalous strong convection near the YHRV. Together with abundant water vapour from the Pacific Northwest, there was a synergistic effect on megapluvial events over the YHRV. Finally, we analysed the linkage of surface temperature in western Asia and northwestern India and megapluvials in the YHRV. Land surface heating over western Asia and northwestern India may largely stimulate the formation of a negative CGT mode through local feedback of air-land interactions and, as a result, affect precipitation anomalies downstream, such as in the YHRV. It is therefore necessary to consider anomalous high surface temperatures in western Asia and northwestern India as important predictors for interdecadal severe floods in the YHRV. |
| WOS关键词 | CIRCUMGLOBAL TELECONNECTION ; GRAIN PRODUCTION ; EASTERN CHINA ; PRECIPITATION ; CLIMATE ; VARIABILITY ; CONSUMPTION ; IMPACTS ; MONSOON ; FLOOD |
| WOS研究方向 | Physical Geography ; Geology |
| WOS记录号 | WOS:001114396500001 |
| 出版者 | ELSEVIER |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/200981]  |
| 专题 | 陆地表层格局与模拟院重点实验室_外文论文 |
| 作者单位 | 1.Beijing Municipal Climate Ctr, Beijing Meteorol Serv, Beijing 100089, Peoples R China 2.44 Zizhuyuan Rd, Beijing, Peoples R China 3.11A Datun Rd, Beijing, Peoples R China 4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 5.Chinese Acad Sci, Key Lab Land Surface Pattern & Simulat, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China |
| 推荐引用方式 GB/T 7714 | Bai, Mengxin,Zheng, Jingyun,Zhang, Liang,et al. Potential causes of megapluvials in the Yangtze-Huaihe River valley over the last millennium[J]. GLOBAL AND PLANETARY CHANGE,2023,231:104292. |
| APA | Bai, Mengxin.,Zheng, Jingyun.,Zhang, Liang.,Xing, Pei.,Wu, Maowei.,...&Du, Wupeng.(2023).Potential causes of megapluvials in the Yangtze-Huaihe River valley over the last millennium.GLOBAL AND PLANETARY CHANGE,231,104292. |
| MLA | Bai, Mengxin,et al."Potential causes of megapluvials in the Yangtze-Huaihe River valley over the last millennium".GLOBAL AND PLANETARY CHANGE 231(2023):104292. |
入库方式： OAI收割
来源：地理科学与资源研究所
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