Journal article

The diurnal cycle of rainfall over New Guinea in convection-permitting WRF simulations

MEE Hassim, TP Lane, WW Grabowski

Atmospheric Chemistry and Physics Discussions | Published : 2015

Abstract

Abstract. In this study, we examine the diurnal cycle of rainfall over New Guinea using a series of convection-permitting numerical simulations with the Weather Research and Forecasting (WRF) model. We focus our simulations on a period of suppressed regional-scale conditions (February 2010) during which local diurnal forcings are maximised. Additionally, we focus our study on the occurrence and dynamics of offshore propagating convective systems that contribute to the observed early-morning rainfall maximum north-east of New Guinea. In general, modelled diurnal precipitation shows good agreement with satellite-observed rainfall, albeit with some timing and intensity differences. The simulat..

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University of Melbourne Researchers