News & Events

Noon seminar - Measuring and modelling the response of polythermal glaciers to climate

Monday, November 05, 2012, 12:00PM - 1:00PM

Noon seminar - Measuring and modelling the response of polythermal glaciers to climate

Speaker

Gwenn Flowers

Department of Earth Sciences, Simon Fraser University

Location:

ARC room 620

Some of the most climatically sensitive regions of the world are populated by "polythermal" glaciers, or glaciers comprised of ice both at and below the melting point. Many efforts to project the influence of atmospheric warming on glaciers has emphasized the short-term effects of warming on glacier mass balance and on ice dynamics through changes in meltwater production. Less attention has been given to the longer-term interaction of climate and ice temperature. In this talk we will explore the effect of climate on polythermal glaciers from surface to bed, using several glaciers in the St. Elias Mountains of southwest Yukon as case studies. We will touch on the fidelity and transferability of surface mass balance models, as well as highlight the environmental controls on glacier thermal structure and its evolution. Come find out why some glaciers are getting colder in this warming world.