Seasonal Variation of the Westerly Jet over Asia in the Last Glacial Maximum: Role of the Tibetan Plateau Heating
文献类型：期刊论文
| 作者 | Lei, Jing1; Shi, Zhengguo1,2,3,4 ; Xie, Xiaoning1; Sha, Yingying1; Li, Xinzhou1; Liu, Xiaodong1; An, Zhisheng1
|
| 刊名 | JOURNAL OF CLIMATE
 |
| 出版日期 | 2021-04-01 |
| 卷号 | 34期号:7页码:2723-2740 |
| 关键词 | Atmospheric circulation Orographic effects Ice age General circulation models |
| ISSN号 | 0894-8755 |
| DOI | 10.1175/JCLI-D-20-0438.1 |
| 通讯作者 | Shi, Zhengguo(shizg@ieecas.cn) |
| 英文摘要 | The westerly jet (WJ) is an important component of atmospheric circulation, which is characterized by prominent seasonal variations in intensity and position. However, the response of the WJ over Asia during the Last Glacial Maximum (LGM) is still not clear. Using general circulation model experiments, the seasonal behaviors of the WJ over central Asia and Japan are analyzed in this paper. The results show that, compared to the present day (PD), the WJ presents a complicated response during the LGM, both in intensity and position. Over central Asia, it becomes weaker in both summer and winter. But over Japan, it is enhanced in summer but becomes diminished in winter. In terms of position, the WJ over central Asia shifts southward in both summer and winter, whereas the WJ over Japan moves southward in summer but does not change obviously relative to PD in winter. Such WJ changes are well explained by meridional temperature gradients in high troposphere, which is closely linked to seasonal thermal anomalies over the Tibetan Plateau (TP). Despite cooler LGM conditions, the anomalous warming center over the TP becomes stronger in summer. Derived from the heat budget equation, the stronger heating center is mainly caused by the weaker adiabatic cooling generated from ascending motion over the area south of the TP. In winter, the cooling over the TP is also strengthened, mostly owing to the subsidence-induced weaker adiabatic heating. Due to the importance of the WJ, the potential role of TP thermal effects should be a focus when explaining the East Asian climate change during the LGM. |
| WOS关键词 | ATMOSPHERIC CIRCULATION ; NUMERICAL-SIMULATION ; RADIATIVE FEEDBACKS ; SUBTROPICAL JET ; MONSOON ONSET ; EAST-ASIA ; ICE-AGE ; CLIMATE ; EVOLUTION ; RAINFALL |
| 资助项目 | Strategic Priority Research Program of the Chinese Academy of Sciences[XDB40030000] ; National Natural Science Foundation of China[41888101] ; National Natural Science Foundation of China[41977382] ; Youth Innovation Promotion Association CAS |
| WOS研究方向 | Meteorology & Atmospheric Sciences |
| 语种 | 英语 |
| WOS记录号 | WOS:000644142700019 |
| 出版者 | AMER METEOROLOGICAL SOC |
| 资助机构 | Strategic Priority Research Program of the Chinese Academy of Sciences ; National Natural Science Foundation of China ; Youth Innovation Promotion Association CAS |
| 源URL | [http://ir.ieecas.cn/handle/361006/16409]  |
| 专题 | 地球环境研究所_古环境研究室 第四纪科学与全球变化卓越创新中心 |
| 通讯作者 | Shi, Zhengguo |
| 作者单位 | 1.Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess & Quaternary Geol, Xian, Peoples R China 2.Chinese Acad Sci, Ctr Excellence Quaternary Sci & Global Change, Xian, Peoples R China 3.Xi An Jiao Tong Univ, Inst Global Environm Change, Xian, Peoples R China 4.Pilot Natl Lab Marine Sci & Technol, Open Studio Ocean Continental Climate & Environm, Qingdao, Peoples R China |
| 推荐引用方式 GB/T 7714 | Lei, Jing,Shi, Zhengguo,Xie, Xiaoning,et al. Seasonal Variation of the Westerly Jet over Asia in the Last Glacial Maximum: Role of the Tibetan Plateau Heating[J]. JOURNAL OF CLIMATE,2021,34(7):2723-2740. |
| APA | Lei, Jing.,Shi, Zhengguo.,Xie, Xiaoning.,Sha, Yingying.,Li, Xinzhou.,...&An, Zhisheng.(2021).Seasonal Variation of the Westerly Jet over Asia in the Last Glacial Maximum: Role of the Tibetan Plateau Heating.JOURNAL OF CLIMATE,34(7),2723-2740. |
| MLA | Lei, Jing,et al."Seasonal Variation of the Westerly Jet over Asia in the Last Glacial Maximum: Role of the Tibetan Plateau Heating".JOURNAL OF CLIMATE 34.7(2021):2723-2740. |
入库方式： OAI收割
来源：地球环境研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。