A51K-0211
Improved Understanding of an Extreme Rainfall Event at the Himalayan Foothills
Friday, 18 December 2015
Poster Hall (Moscone South)
Prabhakar Shrestha, University of Bonn, Meteorological Institute, Bonn, Germany, A P Dimri, Jawaharlal Nehru University, School of Environmental Sciences, Delhi, India, Annika Schomburg, DWD, Offenbach, Germany and Clemens Simmer, University of Bonn, Bonn, Germany
Abstract:
In recent years, an increased occurrence of loss and damage of property and human casualties over the southern rim area of the Himalayas, caused by landslides following intense rainfall events, has been reported. An analysis of Tropical Rainfall Measuring Mission (TRMM)-gridded rainfall data shows that events with an exceedance probability of 1.6% for 200 mm/d rainfall are common over this region during the monsoon season. An improved understanding of the mechanisms, which lead to such events, is therefore important for their prediction and to estimate the impact of climate change on their recurrence. In this study, we analyse such an extreme precipitation event, which hit the Uttarakhand state in India on 13 September 2012. We use a regional weather forecast model at a convection-permitting resolution of 2.8 km to simulate this event and report on the mecahnism leading to such an event.
