Tropical low formation and intensification over land as seen in ECMWF analyses
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Authors
Kilroy, Gerard
Smith, Roger K.
Montgomery, Michael T.
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Date of Issue
2017
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Abstract
Case studies of the formation and intensification over land of three tropical lows in northern Australia are described. The case studies are based on European Centre for Medium-Range Weather Forecasts (ECMWF) analyses. The aim is to investigate the generality of recent results concerning the dynamics and thermodynamics of tropical lows. Consistent with these results, it is found that the processes of low formation and intensification are the same over land as over the ocean. An important element of the intensification process is the need for bursts of deep convection to persist near the circulation centre, which, in turn, requires that convective instability be maintained by surface moisture fluxes. The moist monsoonal environment locally surrounding the storm provides a shield against the adverse effects of dry-air intrusion from the Australian continent.
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Article
Description
Quarterly Journal of the Royal Meteorological Society
The article of record as published may be found at http://dx.doi.org/10.1002/qj.2963
The article of record as published may be found at http://dx.doi.org/10.1002/qj.2963
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Meteorology
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Naval Postgraduate School
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Funded by Naval Postgraduate School
NSF
Office of Naval Research Global
NOAA HFIP
National Aeronautics and Space Administration
Deutsche Forschungsgemeinschaft
NSF
Office of Naval Research Global
NOAA HFIP
National Aeronautics and Space Administration
Deutsche Forschungsgemeinschaft
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This publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States.