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Updated: Feb 13, 2026

Control of Eating Behavior Using a Novel Feedback System

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Acceleration of tropical cyclogenesis by self-aggregation feedbacks.

Caroline J Muller¹, David M Romps^2,3

¹Laboratoire de Météorologie Dynamique (LMD)/Institut Pierre Simon Laplace (IPSL), École Normale Supérieure, Paris Sciences & Lettres (PSL) Research University, Sorbonne Université, École Polytechnique, CNRS, F-75005 Paris, France; carolinemuller123@gmail.com.

Proceedings of the National Academy of Sciences of the United States of America

|March 7, 2018

Summary

Tropical clouds can self-aggregate, forming dry and moist regions. This study shows self-aggregation feedbacks accelerate tropical cyclone formation by 50%, offering new insights into cyclogenesis.

Keywords:

convective aggregation deep convection tropical cyclogenesis tropical cyclone intensification tropical cyclones

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Area of Science:

Atmospheric science
Climate modeling
Tropical meteorology

Background:

Tropical moist convection can spontaneously self-aggregate, forming distinct dry and cloudy regions.
The real-world relevance of self-aggregation remains debated due to idealized simulation conditions.

Purpose of the Study:

To investigate the role of self-aggregation feedbacks in the spontaneous genesis of tropical cyclones.
To quantify the impact of self-aggregation on cyclogenesis acceleration and cyclone maintenance.

Main Methods:

Utilizing cloud-resolving simulations to model tropical cyclone formation.
Analyzing self-aggregation feedbacks during cyclogenesis and their comparison to established processes.
Examining the contribution of self-aggregation to mature cyclone maintenance.

Main Results:

Self-aggregation feedbacks significantly accelerate tropical cyclone genesis by a factor of two.
The identified feedbacks during cyclone formation align with self-aggregation processes.
Self-aggregation contributes non-negligibly to mature cyclone maintenance, alongside wind-induced surface heat exchange (WISHE).

Conclusions:

Self-aggregation plays a critical role in the rapid formation of tropical cyclones.
The study of self-aggregation provides a valuable framework for understanding cyclogenesis and intensification.
Longwave radiative cooling outside the cyclone is highlighted as a key factor in self-aggregation's influence.