Summer Westerly Jet in Northern Hemisphere during the Mid-Holocene: A Multi-Model Study
文献类型：期刊论文
| 作者 | Xu, Chuchu1; Yan, Mi1,2,3; Ning, Liang1,2,3,4; Liu, Jian1,2,5 |
| 刊名 | ATMOSPHERE
 |
| 出版日期 | 2020-11-01 |
| 卷号 | 11期号:11页码:19 |
| 关键词 | mid-latitude westerly jet stream mid-Holocene multi-model simulation mechanisms |
| DOI | 10.3390/atmos11111193 |
| 通讯作者 | Yan, Mi(myan@njnu.edu.cn) |
| 英文摘要 | The upper-level jet stream, a narrow band of maximum wind speed in the mid-latitude westerlies, exerts a considerable influence on the global climate by modulating the transport and distribution of momentum, heat and moisture. In this study by using four high-resolution models in the Paleoclimate Modelling Intercomparison Project phase 3, the changes of position and intensity of the northern hemisphere westerly jet at 200 hPa in summer during the mid-Holocene (MH), as well as the related mechanisms, are investigated. The four models show similar performance on the westerly jet. At the hemispheric scale, the simulated westerly jet has a poleward shift during the MH compared to the preindustrial period. The warming in arctic and cooling in the tropics during the MH are caused by the orbital changes of the earth and the precipitation changes, and it could lead to the weakened meridional temperature gradient and pressure gradient, which might account for the poleward shift of the westerly jet from the thermodynamic perspective. From the dynamic perspective, two maximum centers of eddy kinetic energy are simulated over the North Pacific and North Atlantic with the north deviation, which could cause the northward movement of the westerly jet. The weakening of the jet stream is associated with the change of the Hadley cell and the meridional temperature gradient. The largest weakening is over the Pacific Ocean where both the dynamic and the thermodynamic processes have weakening effects. The smallest weakening is over the Atlantic Ocean, and it is induced by the offset effects of dynamic processes and thermodynamic processes. The weakening over the Eurasia is mainly caused by the dynamic processes. |
| WOS关键词 | LAST GLACIAL MAXIMUM ; INTERANNUAL VARIABILITY ; POLEWARD SHIFT ; CLIMATE-CHANGE ; STORM TRACKS ; WINTER ; ASSOCIATIONS ; CIRCULATION ; SENSITIVITY ; SIMULATION |
| 资助项目 | Strategic Priority Research Program of Chinese Academy of Sciences[XDB40000000] ; National Key Research and Development Program of China[2016YFA0600401] ; National Natural Science Foundation of China[41671197] ; National Natural Science Foundation of China[42075049] ; National Natural Science Foundation of China[41971021] ; National Natural Science Foundation of China[41971108] ; Open Funds of State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, CAS[SKLLQG1930] ; Open Funds of State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, CAS[SKLLQG1820] ; Priority Academic Development Program of Jiangsu Higher Education Institutions (PAPD)[164320H116] |
| WOS研究方向 | Meteorology & Atmospheric Sciences |
| 语种 | 英语 |
| WOS记录号 | WOS:000592842900001 |
| 出版者 | MDPI |
| 资助机构 | Strategic Priority Research Program of Chinese Academy of Sciences ; National Key Research and Development Program of China ; National Natural Science Foundation of China ; Open Funds of State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, CAS ; Priority Academic Development Program of Jiangsu Higher Education Institutions (PAPD) |
| 源URL | [http://ir.ieecas.cn/handle/361006/15608]  |
| 专题 | 地球环境研究所_黄土与第四纪地质国家重点实验室（2010~） |
| 通讯作者 | Yan, Mi |
| 作者单位 | 1.Nanjing Normal Univ, Key Lab Virtual Geog Environm,Sch Geog, Minist Educ,Jiangsu Ctr Collaborat Innovat Geog, State Key Lab Cultivat Base Geog Environm Evolut, Nanjing 210023, Peoples R China 2.Qingdao Natl Lab Marine Sci & Technol, Open Studio Simulat Ocean Climate Isotope, Qingdao 266237, Peoples R China 3.Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess & Quaternary Geol, Xian 710061, Peoples R China 4.Univ Massachusetts, Dept Geosci, Climate Syst Res Ctr, Amherst, MA 01003 USA 5.Nanjing Normal Univ, Sch Math Sci, Jiangsu Prov Key Lab Numer Simulat Large Scale Co, Nanjing 210023, Peoples R China |
| 推荐引用方式 GB/T 7714 | Xu, Chuchu,Yan, Mi,Ning, Liang,et al. Summer Westerly Jet in Northern Hemisphere during the Mid-Holocene: A Multi-Model Study[J]. ATMOSPHERE,2020,11(11):19. |
| APA | Xu, Chuchu,Yan, Mi,Ning, Liang,&Liu, Jian.(2020).Summer Westerly Jet in Northern Hemisphere during the Mid-Holocene: A Multi-Model Study.ATMOSPHERE,11(11),19. |
| MLA | Xu, Chuchu,et al."Summer Westerly Jet in Northern Hemisphere during the Mid-Holocene: A Multi-Model Study".ATMOSPHERE 11.11(2020):19. |
入库方式： OAI收割
来源：地球环境研究所
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