地学新视野|Extreme weather events

主 题：Extreme weather events

时 间：2018年10月26日（星期五），下午14：00

地 点：犀浦校区X4243

主讲人：Dr. Pavel A. Toropov  俄罗斯莫斯科国立大学

Dr. Pavel A. Toropov is Associate Professor at the Department of Meteorology and Climatology of the Faculty of Geography, PhD (2007), meteorologist, research interests: mesometeorology, mountain meteorology, glacio-climatology, dangerous weather phenomena in the mountains, numerical modeling of the atmospheric processes. He gives lectures on “atmospheric Physics” and “Satellite methods in Hydrometeorology”, published about 50 scientific papers. The main scientific result of the last 5 years is the identification of physical mechanisms of intensive melting of glaciers in the Caucasus in the last 20 years associated with anomalies of the radiation budget.

报告内容简介：

In many regions of the world climate change impact on frequency and magnitude of weather extremes and natural hazards. At the same time human societies became more vulnerable to hazards due to increasing land use activity and growing population. This is true for the Caucasus, highly glaciated mountains with altitude up to 5642 m asl., stretched in Russia, Georgia and Azerbaijan. During recent decades they registered rapid increase of June-September mean air temperature. It has resulted in predominantly negative glacier mass balance and accelerating glacier area loss, disappearing of ice apron and termini retreat overall in the Caucasus. Disappearing cryosphere impacts on downstream communities through changing runoff and various hazards including glacier related debris flows, ice-rock and snow avalanches. Overlaying of cryospheric change and weather extremes caused several situations without historical precedents in the region. We analyze major climate, cryosphere and weather-related disasters happened in the Caucasus since early 21st century, identify their triggers and assess their influence on local communities. In most of cases historical communities were less prone to local-scale hazards comparatively to modern communities, but regional cooling in 14th century was among triggers of state Alania decline.

Dr. Pavel A. Toropov

4243报告厅