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キーワード:
Hurricanes; Precipitation (meteorology); Tropical cyclone; Tropics, Climate sensitivity; Convective organization; Convective storms; Deep convection; Madden-Julian oscillation; Precipitation extremes; Radiative-convective equilibrium; Self aggregation; Spontaneous aggregation; Tropical atmospheres, Climatology, convection; convective system; global warming; hydrological cycle; simulation; storm; tropical environment
要旨:
Idealized simulations of the tropical atmosphere have predicted that clouds can spontaneously clump together in space, despite perfectly homogeneous settings. This phenomenon has been called self-aggregation, and it results in a state where a moist cloudy region with intense deep convectivestorms is surrounded by extremely dry subsiding air devoid of deep clouds. We review here the main findings from theoretical work and idealized models of this phenomenon, highlighting the physical processes believed to play a key role in convective self-aggregation. We also review the growing literature on the importance and implications of this phenomenon for the tropical atmosphere, notably, for the hydrological cycle and for precipitation extremes, in our current and in a warming climate. © 2021 Annual Reviews Inc.. All rights reserved.
