Self-Aggregation of Deep Convection and its Implications for Climate

Self-Aggregation of Deep Convection and its Implications for Climate
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深对流的自聚集及其对气候的影响

DOI:
10.1007/s40641-019-00120-3
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发表时间:
2019
影响因子:
9.5
通讯作者:
Wing, Allison A.
Wing, Allison A.
中科院分区:
地球科学1区
文献类型:
--
作者:
Wing, Allison A.

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回顾的目的本文回顾了深对流的自聚集,它对大尺度环境的影响,它对地表温度的依赖,以及它对气候的影响。最近的发现自聚集产生显着的湿度变率,干燥的平均状态,减少高云量,并增加大气冷却到空间的能力。一些研究发现,对流在较温暖的温度下更容易自聚集,但其他研究或其他测量自聚集程度的方法不同意。自聚集与地表温度之间并不存在简单的、单调的关系。自聚集通过对湿度分布和辐射收支的影响而影响气候。然而,自我聚集对气候的调节有多强还不确定,部分原因是其温度依赖性不明确。有一些迹象表明,自聚集可能会适度降低气候敏感性,即使没有显着的温度依赖性,但需要更多的研究来了解这种行为。
Purpose of ReviewThis paper reviews the self-aggregation of deep convection, its impact on the large-scale environment, its dependence on surface temperature, and its implications for climate.Recent FindingsSelf-aggregation generates significant humidity variability, dries the mean state, reduces high cloud cover, and increases the ability of the atmosphere to cool to space. Some studies find that convection is more self-aggregated at warmer temperatures but other studies, or other ways of measuring the degree of self-aggregation, disagree. There is not a simple, monotonic relationship between self-aggregation and surface temperature.SummarySelf-aggregation, through its effect on the humidity distribution and radiative budget, can affect climate. However, there is uncertainty over how strong the modulation of climate by self-aggregation is, in part because of the ambiguity over its temperature dependence. There are some indications that self-aggregation may modestly reduce climate sensitivity even without a dramatic temperature dependence, but more research is needed to understand this behavior.
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