Скачать или смотреть 10/12/20 Climate, People, and the Environment Program Seminar - David Kristovich

Title: In Situ Observations of Clouds and Snow in Lake-effect Snow Storms

Speaker: David Kristovich, Head & Senior Scientist, Climate and Atmospheric Sciences, Illinois State Water Survey/Prairie Research Institute, University of Illinois

Abstract:
Driven by societal impacts of extreme weather conditions produced by lake-effect snow storms (LES), and important influences of LES on the hydrologic and the environmental characteristics of the Great Lakes region, much research has been conducted on the physical processes determining LES structure and evolution. Ironically, a lack of detailed information on clouds and snow in LES systems and their interplay with boundary layer dynamics continues to hinder our ability to predict LES precipitation intensity and total snow accumulation. This presentation will outline what has been learned about the characteristics of, and impacts from, clouds and snow in the LES planetary boundary layer from field observations within these winter storms. Particular emphasis will be on new efforts to utilize in situ and remote sensing observations taken during the Ontario Winter Lake-effect Systems (OWLeS) field project to provide insights into what makes LES over Lake Ontario some of the most complex and extreme in the mid-latitudes of North America.