Articles | Volume 16, issue 13
Atmos. Chem. Phys., 16, 8511–8519, 2016
Atmos. Chem. Phys., 16, 8511–8519, 2016

Research article 13 Jul 2016

Research article | 13 Jul 2016

Why did the storm ex-Gaston (2010) fail to redevelop during the PREDICT experiment?

Thomas M. Freismuth et al.

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Subject: Dynamics | Research Activity: Field Measurements | Altitude Range: Troposphere | Science Focus: Physics (physical properties and processes)
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Cited articles

Bolton, D.: The computation of equivalent potential temperature, Mon. Weather Rev., 108, 1046–1053,<1046:TCOEPT>2.0.CO;2, 1980.
Davis, C. A. and Ahijevych, D. A.: Mesoscale structural evolution of three tropical weather systems observed during PREDICT, J. Atmos. Sci., 69, 1284–1305,, 2012.
Davis, C. A. and Ahijevych, D. A.: Thermodynamic environments of deep convection in atlantic tropical disturbances, J. Atmos. Sci., 70, 1912–1928,, 2013.
Dunkerton, T. J., Montgomery, M. T., and Wang, Z.: Tropical cyclogenesis in a tropical wave critical layer: easterly waves, Atmos. Chem. Phys., 9, 5587–5646,, 2009.
Gjorgjievska, S. and Raymond, D. J.: Interaction between dynamics and thermodynamics during tropical cyclogenesis, Atmos. Chem. Phys., 14, 3065–3082,, 2014.
Short summary
Numerical model analyses are used to investigate the role of dry, environmental air in the failed redevelopment of a tropical cyclone (ex-Gaston, 2010). As early as 12:00 UTC 2 September 2010, a dry layer at and above 600 hPa results in a decrease in the vertical mass flux and vertical, relative vorticity. The intrusion of dry air led to a reduction in vorticity and a compromised pouch at these middle levels. This study supports work looking at the role of dry air in moist convection.
Final-revised paper