Collaborative Research: The Influence of Snow Cover on Northern Hemisphere Climate Variability

Atmospheric And Environmental Research Inc, Lexington MA

Investigators

Abstract

Under their previous grant, the PIs have shown that diabatic heat anomalies at the surface due to snow have large and extensive impacts on atmospheric dynamics, especially in mid- to high-latitudes of the Northern Hemisphere (NH). Work under this award will examine the role of snow cover in forcing or triggering the dominant mode of variability of NH winter climate. Two parallel paths of research will be followed: (i) to focus on the relationship between Eurasian snow cover and winter climate through observational analysis; and (ii) to study cause and effect mechanisms using general circulation modeling. The work is important because it will enhance understanding of NH winter climate variability, and consequently, the potential of improved seasonal forecasting. This has great societal benefits.