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DOI | 10.1175/JCLI-D-16-0069.1 |
An Explanation for the Sensitivity of the Mean State of the Community Atmosphere Model to Horizontal Resolution on Aquaplanets | |
Herrington, Adam R.; Reed, Kevin A. | |
2017-07-01 | |
发表期刊 | JOURNAL OF CLIMATE
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ISSN | 0894-8755 |
EISSN | 1520-0442 |
出版年 | 2017 |
卷号 | 30期号:13 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | The sensitivity of the mean state of the Community Atmosphere Model to horizontal resolutions typical of present-day general circulation models is investigated in an aquaplanet configuration. Nonconvergence of the mean state is characterized by a progressive drying of the atmosphere and large reductions in cloud coverage with increasing resolution. Analyses of energy and moisture budgets indicate that these trends are balanced by variations in moisture transport by the resolved circulation, and a reduction in activity of the convection scheme. In contrast, the large-scale precipitation rate increases with resolution, which is approximately balanced by greater advection of dry static energy associated with more active resolved vertical motion in the ascent region of the Hadley cell. An explanation for the sensitivity of the mean state to horizontal resolution is proposed, based on linear Boussinesq theory. The authors hypothesize that an increase in horizontal resolution in the model leads to a reduction in horizontal scale of the diabatic forcing arising from the column physics, facilitating finescale flow and faster resolved convective updrafts within the dynamical core, and steering the coupled system toward a new mean state. This hypothesis attempts to explain the underlying mechanism driving the variations in moisture transport observed in the simulations. |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000402380900001 |
WOS关键词 | AQUA-PLANET SIMULATIONS ; CLIMATE MODEL ; DYNAMICAL CORE ; PRECIPITATION EXTREMES ; NATIONAL-CENTER ; VERSION 3 ; DEPENDENCE ; CIRCULATION ; PARAMETERIZATION ; CONVERGENCE |
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/19802 |
专题 | 气候变化 |
作者单位 | SUNY Stony Brook, Sch Marine & Atmospher Sci, Stony Brook, NY 11794 USA |
推荐引用方式 GB/T 7714 | Herrington, Adam R.,Reed, Kevin A.. An Explanation for the Sensitivity of the Mean State of the Community Atmosphere Model to Horizontal Resolution on Aquaplanets[J]. JOURNAL OF CLIMATE,2017,30(13). |
APA | Herrington, Adam R.,&Reed, Kevin A..(2017).An Explanation for the Sensitivity of the Mean State of the Community Atmosphere Model to Horizontal Resolution on Aquaplanets.JOURNAL OF CLIMATE,30(13). |
MLA | Herrington, Adam R.,et al."An Explanation for the Sensitivity of the Mean State of the Community Atmosphere Model to Horizontal Resolution on Aquaplanets".JOURNAL OF CLIMATE 30.13(2017). |
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