Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1175/JAS-D-18-0076.1 |
Surface Superrotation | |
Caballero, Rodrigo; Carlson, Henrik | |
2018-10-01 | |
发表期刊 | JOURNAL OF THE ATMOSPHERIC SCIENCES |
ISSN | 0022-4928 |
EISSN | 1520-0469 |
出版年 | 2018 |
卷号 | 75期号:10页码:3671-3689 |
文章类型 | Article |
语种 | 英语 |
国家 | Sweden |
英文摘要 | Equatorial superrotation is commonly observed in simulations of Earth and planetary climates, but it is almost without exception found to occur only at upper levels, with zero or easterly winds at the surface. Surface superrotation-a state with climatological zonal-mean westerlies at the equatorial surface-would lead to a major reorganization of the tropical ocean circulation with important consequences for global climate. Here, we examine the mechanisms that give rise to surface superrotation. We identify four theoretical scenarios under which surface superrotation may be achieved. Using an axisymmetric model forced by prescribed zonal-mean torques, we provide concrete examples of surface superrotation under all four scenarios. We also find that we can induce surface superrotation in a full-complexity atmospheric general circulation model, albeit in an extreme parameter range (in particular, convective momentum transport is artificially increased by almost an order of magnitude). We conclude that a transition to surface superrotation is unlikely in Earthlike climates, including ancient or future warm climates, though this conclusion is subject to the currently large uncertainties in the parameterization of convective momentum transport. |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000450965000002 |
WOS关键词 | AXIAL ANGULAR-MOMENTUM ; EQUATORIAL SUPERROTATION ; GENERAL-CIRCULATION ; 3-DIMENSIONAL STRUCTURE ; ENHANCED MJO ; ZONAL WINDS ; MODEL ; VENUS ; ATMOSPHERE ; MAINTENANCE |
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/29577 |
专题 | 地球科学 |
作者单位 | Stockholm Univ, Dept Meteorol, Stockholm, Sweden |
推荐引用方式 GB/T 7714 | Caballero, Rodrigo,Carlson, Henrik. Surface Superrotation[J]. JOURNAL OF THE ATMOSPHERIC SCIENCES,2018,75(10):3671-3689. |
APA | Caballero, Rodrigo,&Carlson, Henrik.(2018).Surface Superrotation.JOURNAL OF THE ATMOSPHERIC SCIENCES,75(10),3671-3689. |
MLA | Caballero, Rodrigo,et al."Surface Superrotation".JOURNAL OF THE ATMOSPHERIC SCIENCES 75.10(2018):3671-3689. |
条目包含的文件 | 条目无相关文件。 |
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