This is an announcement to invite you to the CSEAS Colloquium for September 2014.

Date & Time: 25 September (Thu) 2014, 16:00~

Place: Middle-sized Meeting Room (No. 332), 3rd Floor, Inamori Foundation Building, Kyoto University

Speaker: Dr. Ke-Sheng Cheng, Professor, Department of Bioenvironmental Systems Engineering, National Taiwan University

Title: Impacts of climate change on rainfall extremes in Thailand and Taiwan

Abstract:
Global warming has had profound impacts on climate and weather of all scales. In coping with such changes, proactive adaptation measures have been suggested. However, planning for adaptation measures requires improved knowledge and quantitative analysis of the uncertainties in climate change. Due to the nature of water resources planning and design, it is imperative to consider the impact of climate change on various hydrological regimes at local and storm-event scales. In this study we focus on assessing the impacts of climate change on storm rainfall characteristics in Taiwan and Thailand using outputs from GCMs. Quantitative analysis on changes in storm characteristics of various storm types was also conducted. A stochastic storm rainfall simulation model (SSRSM) which takes into account the physical storm characteristic was developed. The SSRSM is composed of three major components – (1) storm occurrence simulation, (2) (duration, event-total depth) joint simulation, and (3) hyetograph simulation. By setting storm characteristics representative of the projective period, the SSRSM can generate outputs of huge number of simulation runs. Each run yields one annual sequence of hourly rainfalls. From the SSRSM outputs, annual maximum rainfall series of various design durations were extracted and design storm depths of various return periods and durations were obtained through frequency analysis. Details of the SSRSM and its application will be demonstrated in the talk.

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