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DOI | 10.1175/JAS-D-18-0090.1 |
Inferences from Simple Models of Slow, Convectively Coupled Processes | |
Emanuel, Kerry | |
2019 | |
发表期刊 | JOURNAL OF THE ATMOSPHERIC SCIENCES
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ISSN | 0022-4928 |
EISSN | 1520-0469 |
出版年 | 2019 |
卷号 | 76期号:1页码:195-208 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | A framework for conceptual understanding of slow, convectively coupled disturbances is developed and applied to several canonical tropical problems, including the water vapor content of an atmosphere in radiative-convective equilibrium, the relationship between convective precipitation and column water vapor, Walker-like circulations, self-aggregation of convection, and the Madden-Julian oscillation. The framework is a synthesis of previous work that developed four key approximations: boundary layer energy quasi equilibrium, conservation of free-tropospheric moist and dry static energies, and the weak temperature gradient approximation. It is demonstrated that essential features of slow, convectively coupled processes can be understood without reference to complex turbulent and microphysical processes, even though accounting for such complexity is essential to quantitatively accurate modeling. In particular, we demonstrate that the robust relationship between column water vapor and precipitation observed over tropical oceans does not necessarily imply direct sensitivity of convection to free-tropospheric moisture. We also show that to destabilize the radiative-convective equilibrium state, feedbacks between radiation and clouds and water vapor must be sufficiently strong relative to the gross moist stability. |
英文关键词 | Convection Deep convection Hadley circulation Madden-Julian oscillation Walker circulation |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000454684900002 |
WOS关键词 | SELF-AGGREGATION ; PRECIPITATION ; CIRCULATIONS ; INSTABILITY ; TRANSITION ; SCHEME |
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/29251 |
专题 | 地球科学 |
作者单位 | MIT, Lorenz Ctr, 77 Massachusetts Ave, Cambridge, MA 02139 USA |
推荐引用方式 GB/T 7714 | Emanuel, Kerry. Inferences from Simple Models of Slow, Convectively Coupled Processes[J]. JOURNAL OF THE ATMOSPHERIC SCIENCES,2019,76(1):195-208. |
APA | Emanuel, Kerry.(2019).Inferences from Simple Models of Slow, Convectively Coupled Processes.JOURNAL OF THE ATMOSPHERIC SCIENCES,76(1),195-208. |
MLA | Emanuel, Kerry."Inferences from Simple Models of Slow, Convectively Coupled Processes".JOURNAL OF THE ATMOSPHERIC SCIENCES 76.1(2019):195-208. |
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