Wind influence on snow depth distribution and accumulation over glaciers
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In this article, a nonhydrostatic and compressible atmospheric prediction model was applied to steep alpine topography and compared the results to a fully distributed data set of snow depth estimations.Abstract:
[1] In mountain regions wind is known to cause snow redistribution. While physically based models of snow redistribution have been developed for flat to gently rolling terrain, extension of these findings to steep terrain has been limited by the complexity of wind fields in such areas. In this study, we applied a nonhydrostatic and compressible atmospheric prediction model to steep alpine topography and compared the results to a fully distributed data set of snow depth estimations. The results show reduced horizontal wind velocity as well as an increasing downward vertical wind velocity over areas with the largest winter accumulation, which are mostly glacierized. We show that the wind velocity normal to the local surface, which should be zero in a nondivergent flow field and is a direct measure of increased or decreased local deposition, is a function of small-scale features of local topography. The correlation between wind fields, snow accumulation, and glacierization suggests that accurate modeling of wind fields over glacierized areas in complex terrain is a key factor for understanding the mass balance distribution of glaciers.read more
Citations
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References
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Journal ArticleDOI
New, improved version of generic mapping tools released
Paul Wessel,Walter H. F. Smith +1 more
TL;DR: GMT allows users to manipulate (x,y,z) data, and generate PostScript illustrations, including simple x-y diagrams, contour maps, color images, and artificially illuminated, perspective, and/or shaded-relief plots using a variety of map projections.
Journal ArticleDOI
The Advanced Regional Prediction System (ARPS) – A multi-scale nonhydrostatic atmospheric simulation and prediction model. Part I: Model dynamics and verification
TL;DR: The Advanced Regional Prediction System (ARPS) as mentioned in this paper is a non-hydrostatic model developed at the Center for Analysis and Prediction of Storms (CAPS) at the University of Oklahoma.
Journal ArticleDOI
A snow-transport model for complex terrain
Glen E. Liston,Matthew Sturm +1 more
TL;DR: In this article, a physically based numerical snow-transport model (SnowTran-3D) is developed and used to simulate this three-dimensional snow-depth evolution over topographically variable terrain.
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Spatial Snow Modeling of Wind-Redistributed Snow Using Terrain-Based Parameters
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The Prairie Blowing Snow Model: characteristics, validation, operation
TL;DR: In this paper, the Prairie Blowing Snow Model (PBSM) was used to describe snow transport on fields in a Canadian Prairie environment, and the results showed that the annual proportion of snow transported above any specific height increases notably with mean seasonal wind speed.