Accession Number : ADA245493

Title :   A One-Dimensional Temperature Model for a Snow Cover: Technical Documentation for SNTHERM.89.

Descriptive Note : Special rept.,

Corporate Author : COLD REGIONS RESEARCH AND ENGINEERING LAB HANOVER NH

Personal Author(s) : Jordan, Rachel

Report Date : OCT 1991

Pagination or Media Count : 61

Abstract : This report provides technical documentation for the computer code SNTHERM.89, which is one-dimensional mass and energy balance model of snow and frozen soil. The model is structured using a simplified mixture theory and addresses coupled mass and heat flow, phase change and snow metamorphism. The underlying theory and numerical equations are presented. Included are detailed descriptions of the computation of the energy fluxes at the air/snow interface and of optional routines for estimating short- and long-wave radiation on horizontal and sloped surfaces.

Descriptors :   AIR, BALANCE, COUPLING(INTERACTION), ENERGY, EQUATIONS, FLUX(RATE), FROZEN SOILS, HEAT TRANSFER, INTERFACES, LONG WAVELENGTHS, MASS, METAMORPHOSIS, MIXTURES, MODELS, NUMERICAL ANALYSIS, ONE DIMENSIONAL, PHASE TRANSFORMATIONS, RADIATION, SIMPLIFICATION, SNOW, SNOW COVER, THEORY.

Subject Categories : Computer Programming and Software
      Snow, Ice and Permafrost

Distribution Statement : APPROVED FOR PUBLIC RELEASE