Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1175/JAS-D-16-0219.1 |
Local Energetic Constraints on Walker Circulation Strength | |
Wills, Robert C.1,2; Levine, Xavier J.3; Schneider, Tapio1,2 | |
2017-06-01 | |
发表期刊 | JOURNAL OF THE ATMOSPHERIC SCIENCES |
ISSN | 0022-4928 |
EISSN | 1520-0469 |
出版年 | 2017 |
卷号 | 74期号:6 |
文章类型 | Article |
语种 | 英语 |
国家 | Switzerland; USA |
英文摘要 | The weakening of tropical overturning circulations is a robust response to global warming in climate models and observations. However, there remain open questions on the causes of this change and the extent to which this weakening affects individual circulation features such as the Walker circulation. The study presents idealized GCM simulations of a Walker circulation forced by prescribed ocean heat flux convergence in a slab ocean, where the longwave opacity of the atmosphere is varied to simulate a wide range of climates. The weakening of the Walker circulation with warming results from an increase in gross moist stability (GMS), a measure of the tropospheric moist static energy (MSE) stratification, which provides an effective static stability for tropical circulations. Baroclinic mode theory is used to determine changes in GMS in terms of the tropical-mean profiles of temperature and MSE. The GMS increases with warming, owing primarily to the rise in tropopause height, decreasing the sensitivity of the Walker circulation to zonally anomalous net energy input. In the absence of large changes in net energy input, this results in a rapid weakening of the Walker circulation with global warming. |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000403101200013 |
WOS关键词 | RADIATION BUDGET EXPERIMENT ; HYDROLOGICAL CYCLE ; TROPICAL CIRCULATION ; IDEALIZED GCM ; PRECIPITATION CHANGE ; WIDE-RANGE ; CLOUD TYPE ; CONVECTION ; SCALE ; ATMOSPHERE |
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/29689 |
专题 | 地球科学 |
作者单位 | 1.Swiss Fed Inst Technol, Zurich, Switzerland; 2.CALTECH, Pasadena, CA 91125 USA; 3.Yale Univ, New Haven, CT USA |
推荐引用方式 GB/T 7714 | Wills, Robert C.,Levine, Xavier J.,Schneider, Tapio. Local Energetic Constraints on Walker Circulation Strength[J]. JOURNAL OF THE ATMOSPHERIC SCIENCES,2017,74(6). |
APA | Wills, Robert C.,Levine, Xavier J.,&Schneider, Tapio.(2017).Local Energetic Constraints on Walker Circulation Strength.JOURNAL OF THE ATMOSPHERIC SCIENCES,74(6). |
MLA | Wills, Robert C.,et al."Local Energetic Constraints on Walker Circulation Strength".JOURNAL OF THE ATMOSPHERIC SCIENCES 74.6(2017). |
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