“…Numerous sensitivity studies for one or more physics options of WRF model have been undertaken in different parts of the world such as Spain [1], Japan and Korea [2], Alaska [3], South America [4], western United States [5], southern United States [6], West Africa [7], and others. In India, some sensitivity studies for WRF have been undertaken which mainly focus on extreme events like thunderstorm [8], tropical cyclone [9], and heavy precipitation [10][11][12]. The present work is a case study in which an attempt is made to apply several physics options of the Weather Research and Forecasting model (WRF v 3.1.1) to a subtropical region, namely, Delhi in India, for examining model sensitivity and evaluating the model's performance as suited to this region.…”