Item: Nxd2000: an improved avalanche forecasting program based on the nearest neighbor method
Title: Nxd2000: an improved avalanche forecasting program based on the nearest neighbor method
Proceedings: Proceedings of the 2000 International Snow Science Workshop, October 1-6, Big Sky, Montana
Authors: Martin Gassner *, Swiss Federal Institute for Snow and Avalanche Research, Davos, Switzerland Hans-JOrg Etter, Swiss Federal Institute for Snow and Avalanche Research, Davos, Switzerland Karl Birkeland, U.S. Forest Service National Avalanche Center
Abstract: To assist local avalanche forecasters, Buser (1983) developed an avalanche prediction system based on the nearest neighbor method. NXD2000 is an improved and further developed version of the program, and has been installed at several places in Switzerland, Austria, Kazakhstan, and the USA. Improvements include the introduction of explanatory variables such as settlement and a mass of wind-transported snow and functions giving certain values of a variable more load, e.g. snow surface temperature which is important in the range right below O°C, but not far below at -20°C. We explored the influence of the functions and attempted to optimize the variable loadings at Parsenn Ski Area in Davos, Switzerland and Snowbasin Ski Area in Utah, USA.
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Keywords: avalanches, avalanche forecasting, avalanche forecasting models, nearest neighbors
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