Acceleration of tropical cyclogenesis by self-aggregation feedbacks
Abstract
Idealized simulations of tropical moist convection have revealed that clouds can spontaneously clump together in a process called self-aggregation. This results in a state where a moist cloudy region with intense deep convection is surrounded by extremely dry subsiding air devoid of deep convection. Because of the idealized settings of the simulations where it was discovered, the relevance of self-aggregation to the real world is still debated. Here in this study, we show that self-aggregation feedbacks play a leadingorder role in the spontaneous genesis of tropical cyclones in cloudresolving simulations. Those feedbacks accelerate the cyclogenesis process by a factor of 2, and the feedbacks contributing to the cyclone formation show qualitative and quantitative agreement with the self-aggregation process. Once the cyclone is formed, wind-induced surface heat exchange (WISHE) effects dominate, although we find that self-aggregation feedbacks have a small but nonnegligible contribution to the maintenance of the mature cyclone. In conclusion, our results suggest that self-aggregation, and the framework developed for its study, can help shed more light into the physical processes leading to cyclogenesis and cyclone intensification. In particular, our results point out the importance of the longwave radiative cooling outside the cyclone.
- Authors:
-
[1];
- Sorbonne Université, École Polytechnique, CNRS, Paris (France). Laboratoire de Météorologie Dynamique (LMD)/Institut Pierre Simon Laplace (IPSL), École Normale Supérieure, Paris Sciences & Lettres (PSL) Research University
- Univ. of California, Berkeley, CA (United States). Department of Earth and Planetary Science; Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Climate and Ecosystem Sciences Division
- Publication Date:
- Research Org.:
- Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC)
- OSTI Identifier:
- 1479393
- Grant/Contract Number:
- AC02-05CH11231
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Proceedings of the National Academy of Sciences of the United States of America
- Additional Journal Information:
- Journal Volume: 115; Journal Issue: 12; Journal ID: ISSN 0027-8424
- Publisher:
- National Academy of Sciences, Washington, DC (United States)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 54 ENVIRONMENTAL SCIENCES; tropical cyclones; convective aggregation; deep convection; tropical cyclogenesis; tropical cyclone intensification
Citation Formats
Muller, Caroline J., and Romps, David M. Acceleration of tropical cyclogenesis by self-aggregation feedbacks. United States: N. p., 2018.
Web. doi:10.1073/pnas.1719967115.
Muller, Caroline J., & Romps, David M. Acceleration of tropical cyclogenesis by self-aggregation feedbacks. United States. https://doi.org/10.1073/pnas.1719967115
Muller, Caroline J., and Romps, David M. Mon .
"Acceleration of tropical cyclogenesis by self-aggregation feedbacks". United States. https://doi.org/10.1073/pnas.1719967115. https://www.osti.gov/servlets/purl/1479393.
@article{osti_1479393,
title = {Acceleration of tropical cyclogenesis by self-aggregation feedbacks},
author = {Muller, Caroline J. and Romps, David M.},
abstractNote = {Idealized simulations of tropical moist convection have revealed that clouds can spontaneously clump together in a process called self-aggregation. This results in a state where a moist cloudy region with intense deep convection is surrounded by extremely dry subsiding air devoid of deep convection. Because of the idealized settings of the simulations where it was discovered, the relevance of self-aggregation to the real world is still debated. Here in this study, we show that self-aggregation feedbacks play a leadingorder role in the spontaneous genesis of tropical cyclones in cloudresolving simulations. Those feedbacks accelerate the cyclogenesis process by a factor of 2, and the feedbacks contributing to the cyclone formation show qualitative and quantitative agreement with the self-aggregation process. Once the cyclone is formed, wind-induced surface heat exchange (WISHE) effects dominate, although we find that self-aggregation feedbacks have a small but nonnegligible contribution to the maintenance of the mature cyclone. In conclusion, our results suggest that self-aggregation, and the framework developed for its study, can help shed more light into the physical processes leading to cyclogenesis and cyclone intensification. In particular, our results point out the importance of the longwave radiative cooling outside the cyclone.},
doi = {10.1073/pnas.1719967115},
journal = {Proceedings of the National Academy of Sciences of the United States of America},
number = 12,
volume = 115,
place = {United States},
year = {2018},
month = {3}
}
Free Publicly Available Full Text
Publisher's Version of Record
Other availability
Search WorldCat to find libraries that may hold this journal
Cited by: 45 works
Citation information provided by
Web of Science
Web of Science
Figures / Tables:
Figure 1: Cyclone evolution in CTRL and sensitivity runs. (A–D) Snapshots of $\int$MSE at day 100 of the simulations. (E-H) Time evolution of the SD of $\int$MSE and of the domain-averaged wind speed near the surface (m∙s-1 at the first atmospheric level z=37.5 m).
All figures and tables
(5 total)
Save to My Library
You must Sign In or Create an Account in order to save documents to your library.
Works referenced in this record:
Cloud Resolving Modeling of the ARM Summer 1997 IOP: Model Formulation, Results, Uncertainties, and Sensitivities
journal, February 2003
- Khairoutdinov, Marat F.; Randall, David A.
- Journal of the Atmospheric Sciences, Vol. 60, Issue 4
Convective Self-Aggregation in Numerical Simulations: A Review
journal, February 2017
- Wing, Allison A.; Emanuel, Kerry; Holloway, Christopher E.
- Surveys in Geophysics, Vol. 38, Issue 6
What favors convective aggregation and why?: WHAT FAVORS CONVECTIVE AGGREGATION
journal, July 2015
- Muller, Caroline; Bony, Sandrine
- Geophysical Research Letters, Vol. 42, Issue 13
T ROPICAL C YCLONES
journal, May 2003
- Emanuel, Kerry
- Annual Review of Earth and Planetary Sciences, Vol. 31, Issue 1
Tropical cyclogenesis in a tropical wave critical layer: easterly waves
journal, January 2009
- Dunkerton, T. J.; Montgomery, M. T.; Wang, Z.
- Atmospheric Chemistry and Physics, Vol. 9, Issue 15
Self-aggregation of convection in long channel geometry: Self-Aggregation in Channel Geometry
journal, September 2015
- Wing, Allison A.; Cronin, Timothy W.
- Quarterly Journal of the Royal Meteorological Society, Vol. 142, Issue 694
An Energy-Balance Analysis of Deep Convective Self-Aggregation above Uniform SST
journal, December 2005
- Bretherton, Christopher S.; Blossey, Peter N.; Khairoutdinov, Marat
- Journal of the Atmospheric Sciences, Vol. 62, Issue 12
An Air-Sea Interaction Theory for Tropical Cyclones. Part I: Steady-State Maintenance
journal, March 1986
- Emanuel, Kerry A.
- Journal of the Atmospheric Sciences, Vol. 43, Issue 6
Rotating radiative-convective equilibrium simulated by a cloud-resolving model: ROTATING RCE
journal, December 2013
- Khairoutdinov, Marat; Emanuel, Kerry
- Journal of Advances in Modeling Earth Systems, Vol. 5, Issue 4
The Formation of Moist Vortices and Tropical Cyclones in Idealized Simulations
journal, September 2015
- Davis, Christopher A.
- Journal of the Atmospheric Sciences, Vol. 72, Issue 9
Physical mechanisms controlling self-aggregation of convection in idealized numerical modeling simulations: SELF-AGGREGATION MECHANISMS
journal, February 2014
- Wing, Allison A.; Emanuel, Kerry A.
- Journal of Advances in Modeling Earth Systems, Vol. 6, Issue 1
Role of Radiative–Convective Feedbacks in Spontaneous Tropical Cyclogenesis in Idealized Numerical Simulations
journal, July 2016
- Wing, Allison A.; Camargo, Suzana J.; Sobel, Adam H.
- Journal of the Atmospheric Sciences, Vol. 73, Issue 7
Large-scale character of an atmosphere in rotating radiative-convective equilibrium
journal, July 2014
- Shi, Xiaoming; Bretherton, Christopher S.
- Journal of Advances in Modeling Earth Systems, Vol. 6, Issue 3
Detailed Investigation of the Self-Aggregation of Convection in Cloud-Resolving Simulations
journal, August 2012
- Muller, Caroline J.; Held, Isaac M.
- Journal of the Atmospheric Sciences, Vol. 69, Issue 8
Radiative-Convective Equilibrium with Explicit Two-Dimensional Moist Convection
journal, December 1993
- Held, Isaac M.; Hemler, Richard S.; Ramaswamy, V.
- Journal of the Atmospheric Sciences, Vol. 50, Issue 23
Isentropic Analysis of a Simulated Hurricane
journal, May 2016
- Mrowiec, Agnieszka A.; Pauluis, Olivier M.; Zhang, Fuqing
- Journal of the Atmospheric Sciences, Vol. 73, Issue 5
Is Tropical Cyclone Intensity Guidance Improving?
journal, March 2014
- DeMaria, Mark; Sampson, Charles R.; Knaff, John A.
- Bulletin of the American Meteorological Society, Vol. 95, Issue 3
Isentropic Analysis of Convective Motions
journal, November 2013
- Pauluis, Olivier M.; Mrowiec, Agnieszka A.
- Journal of the Atmospheric Sciences, Vol. 70, Issue 11
Role of Radiative–Convective Feedbacks in Spontaneous Tropical Cyclogenesis in Idealized Numerical Simulations
text, January 2016
- Wing, Allison A.; Camargo, Suzana J.; Sobel, Adam H.
- Columbia University
Works referencing / citing this record:
Understanding the vertical structure of potential vorticity in tropical depressions
journal, April 2019
- Murthy, Varun S.; Boos, William R.
- Quarterly Journal of the Royal Meteorological Society, Vol. 145, Issue 722
Self-Aggregation of Deep Convection and its Implications for Climate
journal, January 2019
- Wing, Allison A.
- Current Climate Change Reports, Vol. 5, Issue 1
Aquaplanet Simulations of Tropical Cyclones
journal, June 2019
- Merlis, Timothy M.; Held, Isaac M.
- Current Climate Change Reports, Vol. 5, Issue 3
Mechanisms of Future Predicted Changes in the Zonal Mean Mid-Latitude Circulation
journal, November 2019
- Shaw, Tiffany A.
- Current Climate Change Reports
Dry and Moist Atmospheric Circulation with Uniform Sea-Surface Temperature
text, January 2021
- Suhas, D. L.; Sukhatme, Jai; Harnik, Nili
- arXiv
Figures / Tables found in this record:
Figures/Tables have been extracted from DOE-funded journal article accepted manuscripts.