Spontaneous Aggregation of Convective Storms

Author:

Muller Caroline12,Yang Da34,Craig George5,Cronin Timothy6,Fildier Benjamin1,Haerter Jan O.789,Hohenegger Cathy10,Mapes Brian11,Randall David12,Shamekh Sara13,Sherwood Steven C.14

Affiliation:

1. Laboratoire de Météorologie Dynamique, CNRS UMR 8539, Institut Pierre Simon Laplace, Ecole Normale Supérieure, Université Paris Sciences et Lettres, Paris, France;

2. Current affiliation: Institute of Science and Technology Austria, Klosterneuburg, Austria

3. Department of Land, Air and Water Resources, University of California, Davis, California, USA

4. Lawrence Berkeley National Laboratory, Berkeley, California, USA

5. Deutsches Zentrum für Luft und Raumfahrt, Munich, Germany

6. Massachusetts Institute of Technology, Cambridge, Massachusetts, USA

7. Niels Bohr Institute, Copenhagen University, Copenhagen, Denmark

8. Complexity and Climate Research Group, Leibniz Center for Tropical Marine Research, Bremen, Germany

9. Department of Computer Science and Electrical Engineering, Jacobs University, Bremen, Germany

10. Max Planck Institute for Meteorology, Hamburg, Germany

11. Department of Atmospheric Sciences, University of Miami, Miami, Florida, USA

12. Department of Atmospheric Science, Colorado State University, Fort Collins, Colorado, USA

13. Department of Earth and Environmental Engineering, Columbia University, New York, NY, USA

14. ARC Centre of Excellence for Climate Extremes, University of New South Wales, Sydney, Australia

Abstract

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.

Publisher

Annual Reviews

Subject

Condensed Matter Physics

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