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TOPOGRAPHIC CONTROLS ON SPATIAL AND TEMPORAL VARIATION IN SNOW TEMPERATURES IN A MOUNTAIN SNOWPACK
Submitted by Armida on Mon, 02/11/2013 - 10:06
|TOPOGRAPHIC CONTROLS ON SPATIAL AND TEMPORAL VARIATION IN SNOW TEMPERATURES IN A MOUNTAIN SNOWPACK
|Year of Conference
|Deems, J. S.
|69th Annual Western Snow Conference
|Proceedings of the 69th Annual Western Snow Conference
|Western Snow Conference
|Sun Valley, Idaho
|Modeling, Snow temperatures, Topographic control
The objective of this project is to analyze and model the geographic patterns of snow temperature profile characteristics as functions of topographic variables. The results of a pilot study are presented here. Snow temperature is a dominant variable in many physical processes in the seasonal snowpack. This spatial, or geographic, analysis of the relationship of snow temperature patterns to topography, utilizing landscape-scale modeling, attempts to identify temperature responses to effects of complex terrain. Data from the pilot study is used to create regression models predicting temperature profile characteristics throughout a basin, based on a combination of slope and slope aspect parameters at similar elevation. Prediction maps demonstrate the potential of this modeling technique. Future plans include collection and use of a larger dataset, inclusion of more topographic variables, and incorporation of a change-over-time component. Knowledge of the patterns of snow temperature profile characteristics over space and time could aid in avalanche prediction and snowmelt modeling.