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| DOI | 10.1175/BAMS-D-19-0180.1 |
| The interaction between moist convection and the atmospheric circulation in the tropics | |
| Tomassini L. | |
| 发表日期 | 2021 |
| ISSN | 00030007 |
| 起始页码 | E1378 |
| 结束页码 | E1396 |
| 卷号 | 101期号:8 |
| 英文摘要 | Theories of the interaction between moist convection and the atmospheric circulation in the tropics are reviewed. Two main schools of thought are highlighted: (i) one that emphasizes the lower-level control of convection through moisture convergence and variations in convective inhibition, and (ii) one that sees convection as an adjustment process in reaction to larger-scale instabilities, referred to as convective quasi-equilibrium theory. Conceptually the two views consider moist convection to have fundamentally different roles in the tropical circulation. In one case the presence of low-level inhibition and the conditional nature of the atmospheric instability allows for convective vertical motion and latent heating to drive and reinforce synoptic-scale disturbances and overturning circulations; in the other case, because low-level inhibition is not acknowledged to be a widespread controlling barrier, convection is believed to balance and dampen vertical instabilities at the rate they are created by larger-scale processes over the vertical extent of the atmosphere. More recently, investigations of the moisture dynamics surrounding organized convective structures have led to an emerging consensus on the theory of convection-circulation coupling in the tropics that acknowledges the important role of lower- to midtropospheric moisture variations, and the significance of moist convection and convective clouds for initiating and establishing circulations. However, the implementation of these new insights in numerical models lags behind. This is exemplified by the apparent inadequacy of climate models to correctly represent decadal variability in the tropical Pacific, a fact that potentially has implications for the confidence in climate change projections based on such models. © 2020 American Meteorological Society. All rights reserved. |
| 语种 | 英语 |
| scopus关键词 | Climate change; Moisture; Tropics; Atmospheric circulation; Climate change projections; Convective inhibition; Decadal variability; Moisture convergence; Moisture variation; Overturning circulation; Quasi equilibrium; Climate models |
| 来源期刊 | Bulletin of the American Meteorological Society
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| 文献类型 | 期刊论文 |
| 条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/177745 |
| 作者单位 | Met Office, Exeter, United Kingdom |
| 推荐引用方式 GB/T 7714 | Tomassini L.. The interaction between moist convection and the atmospheric circulation in the tropics[J],2021,101(8). |
| APA | Tomassini L..(2021).The interaction between moist convection and the atmospheric circulation in the tropics.Bulletin of the American Meteorological Society,101(8). |
| MLA | Tomassini L.."The interaction between moist convection and the atmospheric circulation in the tropics".Bulletin of the American Meteorological Society 101.8(2021). |
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