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Large scale snow cover extent variations

PI: Allan Frei
Institution: Hunter College
Additional Investigators: Dave Robinson (Rutgers), Gavin Gong (Columbia), Judah Cohen (AER, Inc.)
Abstract:
We would like to evaluate model simulations of large scale snow cover extent variations. The objectives would be to determine if models are capturing the mean and interannual variability of snow extent across the Northern Hemisphere since ~1970; and to determine if models are capturing the decadal scale variability (since ~1900) over regions and seasons for which sufficient information for evaluations are available. We will like to perform first order diagnostics on model errors by evaluating relationships between snow extent, precipitation, temperature. We would require, at a minimum, the following fields at the monthly time scale:

Sea level pressure (psl)
Near surface air temperature (tas)
Surface snow thickness (snd)
Surface air pressure (ps)
Snowfall flux (prsn)
Surface snow amount where land (snw)
Surface snow area fraction where land (snc)
Surface snow melt flux where land (snm)
All land surface data (orog, sftlf, sftgif, mrsofc)
Publications:
  • Frei, Allan, and Gavin Gong, 2005: Decadal to century scale trends in North American snow extent in coupled Atmosphere-Ocean General Circulation Models. Geophysical Research Letters, 32, L18502. Abstract. Full Article. Edit.

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