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Advances in Meteorology
Volume 2017, Article ID 1762137, 14 pages
https://doi.org/10.1155/2017/1762137
Research Article

Effects of the Representation of Convection on the Modelling of Hurricane Tomas (2010)

CIMA Research Foundation, Savona, Italy

Correspondence should be addressed to Antonio Parodi; gro.noitadnuofamic@idorap.oinotna

Received 11 February 2017; Revised 4 May 2017; Accepted 15 May 2017; Published 26 July 2017

Academic Editor: Olivier P. Prat

Copyright © 2017 Irene Marras et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

The cumulus parameterization is widely recognised as a crucial factor in tropical meteorology: this paper intends to shed further light on the effects of convection parameterization on tropical cyclones’ numerical predictions in the “grey zone” (10–1 km grid spacing). Ten experiments are devised by combining five different convection treatments over the innermost, 5 km grid spacing, domain, and two different global circulation model datasets (IFS and ERA-Interim). All ten experiments are finally analysed and compared to observations provided by the National Hurricane Center’s best track record and multisatellite rainfall measurements. Results manifestly point to the superiority of employing no convective parameterization at the scale of 5 km versus the usage of any of those provided by WRF to reproduce the case study of Hurricane Tomas, which hit the Lesser Antilles and Greater Antilles in late October and early November 2010.