Investigation of Intense Precipitation from Tropical Cyclones during the 21st Century by Dynamical Downscaling of CCSM4 RCP 4.5

Mathieu Mure-Ravaud, M. Levent Kavvas and Alain Dib
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Mathieu Mure-Ravaud: Department of Civil and Environmental Engineering, University of California, Davis. 1 Shields Ave, Davis, CA 95616, USA
M. Levent Kavvas: Department of Civil and Environmental Engineering, University of California, Davis. 1 Shields Ave, Davis, CA 95616, USA
Alain Dib: Department of Civil and Environmental Engineering, University of California, Davis. 1 Shields Ave, Davis, CA 95616, USA

IJERPH, 2019, vol. 16, issue 5, 1-27

Abstract: In this article, a dynamical downscaling (DD) procedure is proposed to downscale tropical cyclones (TCs) from a general circulation model, with the goal of investigating inland intense precipitation from these storms in the future. This DD procedure is sequential as it is performed from the large scale to the small scale within a one-way nesting modeling framework with the Weather Research and Forecasting (WRF) model. Furthermore, it involves a two-step validation process to ensure that the model produces realistic TCs, both in terms of their general properties and in terms of their intense precipitation statistics. In addition, this procedure makes use of several algorithms such as for the detection and tracking of TCs, with the objective of automatizing the DD process as much as possible so that this approach could be used to downscale massively many climate projections with several sets of model options. The DD approach was applied to the Community Climate System Model (CCSM) version 4 using Representative Concentration Pathway (RCP) 4.5 during the period 2005–2100, and the resulting TCs and their intense precipitation were examined.

Keywords: dynamical downscaling; tropical cyclone; intense precipitation; general circulation model; climate change (search for similar items in EconPapers)
JEL-codes: I I1 I3 Q Q5 (search for similar items in EconPapers)
Date: 2019
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