Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1002/2017GL073778 |
Land-sea thermal contrast determines the trend of Walker circulation simulated in atmospheric general circulation models | |
Yim, Bo Young1; Yeh, Sang-Wook2; Song, Hwan-Jin3; Dommenget, Dietmar4; Sohn, B. J.3 | |
2017-06-16 | |
发表期刊 | GEOPHYSICAL RESEARCH LETTERS |
ISSN | 0094-8276 |
EISSN | 1944-8007 |
出版年 | 2017 |
卷号 | 44期号:11 |
文章类型 | Article |
语种 | 英语 |
国家 | South Korea; Australia |
英文摘要 | Strengthening or weakening of the Walker circulation can highly influence the global weather and climate variability by altering the location and strength of tropical heating. Therefore, there is considerable interest in understanding the mechanisms that lead to the trends in the Walker circulation intensity. Conventional wisdom indicates that a strengthening or weakening of the Walker circulation is primarily controlled by inhomogeneous sea surface temperature (SST) patterns across the tropical Pacific basin. However, we show that Atmospheric Model Intercomparison Project climate model simulations with identical SST forcing have different Walker circulation trends that can be linked to differences in land surface temperatures. More prominently, stronger land-sea thermal contrast leads to increases in the precipitation in South America as well as the sea level pressure in the eastern tropical Pacific through a local circulation, resulting in a strengthening of the Walker circulation trend. This implies that correctly simulating the land temperature in atmospheric models is crucial to simulating the intensity of the Walker circulation in the present climate as well as its future change. |
英文关键词 | Walker circulation AMIP climate models land-sea thermal contrast sea surface temperature |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000404382600068 |
WOS关键词 | TROPICAL CIRCULATION ; WARMING CONTRAST ; PACIFIC ; VARIABILITY ; RAINFALL ; TEMPERATURE ; RESPONSES ; PATTERNS ; HIATUS ; CMIP5 |
WOS类目 | Geosciences, Multidisciplinary |
WOS研究方向 | Geology |
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/25886 |
专题 | 气候变化 |
作者单位 | 1.Korea Meteorol Adm, Climate Extremes Anal & Assessment Team, Seoul, South Korea; 2.Hanyang Univ, Dept Marine Sci & Convergent Technol, Ansan, South Korea; 3.Seoul Natl Univ, Sch Earth & Environm Sci, Seoul, South Korea; 4.Monash Univ, Sch Earth Atmosphere & Environm, Clayton, Vic, Australia |
推荐引用方式 GB/T 7714 | Yim, Bo Young,Yeh, Sang-Wook,Song, Hwan-Jin,et al. Land-sea thermal contrast determines the trend of Walker circulation simulated in atmospheric general circulation models[J]. GEOPHYSICAL RESEARCH LETTERS,2017,44(11). |
APA | Yim, Bo Young,Yeh, Sang-Wook,Song, Hwan-Jin,Dommenget, Dietmar,&Sohn, B. J..(2017).Land-sea thermal contrast determines the trend of Walker circulation simulated in atmospheric general circulation models.GEOPHYSICAL RESEARCH LETTERS,44(11). |
MLA | Yim, Bo Young,et al."Land-sea thermal contrast determines the trend of Walker circulation simulated in atmospheric general circulation models".GEOPHYSICAL RESEARCH LETTERS 44.11(2017). |
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