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Read Full Article (file size: 192981 bytes) Cited by
GEOPHYSICAL RESEARCH LETTERS,
VOL. 34,
L06811,
doi:10.1029/2006GL028607,
2007
Evolution of convection during tropical cyclogenesis
David J. Raymond
Physics Department and Geophysical Research Center, New Mexico Institute of Mining and Technology, Socorro, New Mexico, USA
Sharon L. Sessions
Physics Department and Geophysical Research Center, New Mexico Institute of Mining and Technology, Socorro, New Mexico, USA
Abstract
Central to tropical cyclogenesis is the changing behavior of moist convection as the cyclone evolves. Based on a cumulus ensemble
model run in weak temperature gradient mode, we suggest that the mid-level vortex created by early-stage convection stabilizes
the environment in way that favors further development. In particular, modeled convection occurring in the more stable environment
produces heavy rainfall and concentrated inflow at low levels. Such inflow is needed for the development of the low-level
vortex characteristic of warm-core tropical cyclones. The increase in humidity which is typical of developing cyclones also
increases convective rainfall, but it does not act to concentrate the inflow at low levels.
Received 27
October
2006;
accepted 2
March
2007;
published 31
March
2007.
Keywords: tropical cyclogenesis;
deep convection;
cloud modeling.
Index Terms: 3374 Atmospheric Processes: Tropical meteorology; 3314 Atmospheric Processes: Convective processes; 3349 Atmospheric Processes: Polar meteorology; 3329 Atmospheric Processes: Mesoscale meteorology.
Read Full Article (file size: 192981 bytes) Cited by
Citation: Raymond, D. J., and S. L. Sessions
(2007),
Evolution of convection during tropical cyclogenesis,
Geophys. Res. Lett.,
34,
L06811,
doi:10.1029/2006GL028607.
Copyright 2007 by the American Geophysical Union.
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