Design of Multiple Moving Nests in Hurricane Weather Research and Forecasting Modeling System

Hurricane is an intense atmospheric circulation characterized by strong multi-scale interactions between convective clouds, on the order of a few kilometers, and the large scale environment, on the order of several hundreds to thousands of kilometers. Hurricane Weather Research and Forecasting Modeling system (HWRF), with a Non-hydrostatic Mesoscale Model (NMM) dynamic core under the WRF model software framework, supports moving, one- or two-way interactive nests. This study presents the design of the multiple moving nests in HWRF and the nest moving algorithm. Some retrospective and real-time forecast results based on the multiple moving nests HWRF are discussed in this study.