当前位置： 首页»科学研究» 科研动态 【学术讲座】Using an ultra-high resolution regional climate model to predict local climatology 发布时间：Mon Jun 11 12:18:00 CST 2012

Topic: Using an ultra-high resolution regional climate model to predict local climatology

Speaker: Changgui Wang

Career background：

Changgui joined the Met Office in 2007 to work on the infrastructure development for mesoscale climatological system and the application of very high resolution NWP for predicting radar ducting. Changgui was a lead research scientist for the ABCANZ collaboration in applying high-resolution NWP models for radar propagation. She has developed the local high resolution climate modelling (MESOTOOL) system to enable rapid and cost effective configuration of the UM, a tool for which she provided guidance and support to users who develop and run very high resolution (towards 500m) NWP and climate simulations. As the code owner of the MESOTOOL, she continues maintaining and providing support to users to enable the Met Office to provide consultancy service in the aspect of very high resolution climatological impact studies. Changgui also developed the modelling infrastructure for convective-scale ensemble forecasting to explore the benefits of using high-resolution NWP models for hazardous weather prediction while she worked for the Mesoscale Research Group at the Met Office.

Before joining the Met Office, Changgui spent seven years as a senior computational scientist at the National Centre for Atmospheric Science for providing advice, support and training for UM software systems. Prior to that, Changgui completed her PhD in environmental modelling at the Department of Civil Engineering in the University of Newcastle. During her PhD studies, she spent two years as a catchment environmental modeller at the Centre for Ecology and Hydrology. Changgui worked for the Institute of Water Resource Protection, Yangtze River Basin Commission, China before she came to the UK where she was awarded the first prize of advance technology in 1995 for leading the project of the impact of Three-Gorges Reservoir on the Downstream River Water Quality.

Areas of expertise：

Hydrological and environmental modelling

Catchment modelling

Mesoscale and very high resolution NWP modelling

Development of high resolution systems for climatological studies

Development of convective-scale ensemble forecasting

Abstract:

Many applications of risk assessment and Environment Impact Assessments (EIA) require information about the local mesoscale climate at a very fine spatial scale. Current regional climate models (RCMs) whose grid resolution normally range between 10 and 50km can not resolve the local physiographic features which influence the small-scale features of local climate. This paper presents a local climate model (LCM) with an ultra-high resolution and demonstrates its application to study the local climatology in a coastal zone where details of topography and coastal line are important influences on the climate. The LCM has been developed from the Met Office Unified Model (MetUM) based on the concept of very high resolution numerical weather prediction. It is intended to operate multiple nesting from a spatial resolution of 12km down to ~500m. The pilot study of the LCM was carried out at 12-, 4-, 1- and 0.5-km grid resolutions in simulating the mesoscale climate of Weymouth Bay and Portland Harbour along the south coast of the UK. The period simulated was July-August of the years 1993 to 2002 with model results validated against meteorological station time series. Simulations over the 500m resolution inner domain well captured local mesoscale climate patterns of sea breeze, diurnal variations of temperature such as southwesterly flows and the effect of wind channelling between the Isle of Portland and the mainland.

Time: 10:00-12:30 AM, ,June 15, 2012

15:00-17:30 PM, ,June 14, 2012

Venue: GCESS Simulation Hall,1st floor,Sci&Tech building of BNU

北京师范大学科技楼一楼会议室

 

 

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