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DOI | 10.1175/JCLI-D-17-0868.1 |
Interdecadal Weakening of the East Asian Winter Monsoon in the Mid-1980s: The Roles of External Forcings | |
Miao, Jiapeng1,2; Wang, Tao1,3; Wang, Huijun1,3,4,5; Zhu, Yali1,3; Sun, Jianqi1,2,6 | |
2018-11-01 | |
发表期刊 | JOURNAL OF CLIMATE
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ISSN | 0894-8755 |
EISSN | 1520-0442 |
出版年 | 2018 |
卷号 | 31期号:21页码:8985-9000 |
文章类型 | Article |
语种 | 英语 |
国家 | Peoples R China |
英文摘要 | Observations show that the East Asian winter monsoon (EAWM) experienced an interdecadal weakening in the mid-1980s. This is evident for all members of the EAWM system (i.e., East Asian trough, upper-tropospheric jet stream, and lower-tropospheric monsoon circulation). Here, we investigate the relative contributions of natural (volcanic aerosols and solar variability) and anthropogenic [greenhouse gases (GHGs) and anthropogenic aerosols] forcings to this interdecadal weakening using multiple coupled models within phase 5 of the Coupled Model Intercomparison Project (CMIP5). The results indicate that in the midtroposphere, the increased GHG concentrations play an important role in weakening the East Asian trough (EAT) by increasing the sea surface temperatures (SSTs) over the North Pacific. In the upper troposphere, natural external forcings contribute to the observed weakening of the meridional shear of the East Asian jet stream (EAJS) by regulating the meridional temperature gradient (MTG) over the East Asian region. In the lower troposphere, both anthropogenic and natural forcings can weaken the Siberian high during this period. Overall, based on the present analysis of the CMIP5 output, GHGs and natural forcings play key roles in shaping the observed interdecadal weakening of the EAWM during the mid-1980s. Additionally, contributions from internal variability cannot be neglected and require further investigation. |
英文关键词 | Forcing Monsoons Winter cool season Coupled models Interdecadal variability |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000448509700002 |
WOS关键词 | CMIP5 MODELS ; TEMPERATURE TRENDS ; ARCTIC OSCILLATION ; AIR-TEMPERATURE ; SUMMER MONSOON ; CLIMATE-CHANGE ; VARIABILITY ; CHINA ; ENSO ; PERFORMANCE |
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/19395 |
专题 | 气候变化 |
作者单位 | 1.Chinese Acad Sci, Inst Atmospher Phys, Nansen Zhu Int Res Ctr, Beijing, Peoples R China; 2.Univ Chinese Acad Sci, Beijing, Peoples R China; 3.Nanjing Univ Informat Sci & Technol, Collaborat Innovat Ctr Forecast & Evaluat Meteoro, Nanjing, Jiangsu, Peoples R China; 4.Nanjing Univ Informat Sci & Technol, Key Lab Meteorol Disaster, Nanjing, Jiangsu, Peoples R China; 5.Chinese Acad Sci, Climate Change Res Ctr, Beijing, Peoples R China; 6.Chengdu Univ Informat Technol, Joint Lab Climate & Environm Change, Chengdu, Sichuan, Peoples R China |
推荐引用方式 GB/T 7714 | Miao, Jiapeng,Wang, Tao,Wang, Huijun,et al. Interdecadal Weakening of the East Asian Winter Monsoon in the Mid-1980s: The Roles of External Forcings[J]. JOURNAL OF CLIMATE,2018,31(21):8985-9000. |
APA | Miao, Jiapeng,Wang, Tao,Wang, Huijun,Zhu, Yali,&Sun, Jianqi.(2018).Interdecadal Weakening of the East Asian Winter Monsoon in the Mid-1980s: The Roles of External Forcings.JOURNAL OF CLIMATE,31(21),8985-9000. |
MLA | Miao, Jiapeng,et al."Interdecadal Weakening of the East Asian Winter Monsoon in the Mid-1980s: The Roles of External Forcings".JOURNAL OF CLIMATE 31.21(2018):8985-9000. |
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