Articles | Volume 18, issue 19
Atmos. Chem. Phys., 18, 14393–14416, 2018
Atmos. Chem. Phys., 18, 14393–14416, 2018

Research article 09 Oct 2018

Research article | 09 Oct 2018

A numerical modelling investigation of the role of diabatic heating and cooling in the development of a mid-level vortex prior to tropical cyclogenesis – Part 1: The response to stratiform components of diabatic forcing

Melville E. Nicholls et al.

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Cited articles

Adams-Selin, R. D. and Johnson, R. H.: Examination of gravity waves associated with the 13 March 2003 bow echo, Mon. Weather Rev., 141, 3735–3756, 2013. 
Bister, M. and Emanuel, K. A.: The genesis of hurricane Guillermo: TEXMEX analyses and a modeling study, Mon. Weather Rev., 125, 2662–2682, 1997. 
Braun, S. A. and Houze Jr., R. A.: The evolution of the 10–11 June 1985 PRE-STORM squall line: Initiation, development of rear inflow, and dissipation, Mon. Weather Rev., 125, 478–504, 1997. 
Chen, S. S. and Frank, W. M.: A numerical study of the genesis of extratropical convective mesovortices. Part I: Evolution and dynamics, J. Atmos. Sci., 50, 2401–2426, 1993. 
Conzemius, R. J. and Montgomery, M. T.: Clarification on the generation of absolute and potential vorticity in mesoscale convective vortices, Atmos. Chem. Phys., 9, 7591–7605,, 2009. 
Short summary
Mid-level vortices are often observed to develop prior to the formation of a tropical cyclone. A numerical modelling simulation of tropical cyclogenesis is carried out which shows the development of a mid-level vortex, and an analysis indicates that sublimation at the base of the stratiform ice layer plays a major role in its formation. Understanding how mid-level vortices form and their role in tropical cyclogenesis may eventually lead to improved forecasts of these major weather events.
Final-revised paper