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Rapid calculation of terrain parameters for radiation modeling from digital elevation data (1990)

Frew, James ; Dozier, Jeff

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Publication Date: 2011-08-19

Description: Digital elevation models are now widely used to calculate terrain parameters to determine incoming solar and longwave radiation for use in surface climate models, interpretation of remote-sensing data, and parameters in hydrologic models. Because of the large number of points in an elevation grid, fast algorithms are useful to save computation time. A description is given of rapid methods for calculating slope and azimuth, solar illumination angle, horizons, and view factors for radiation from sky and terrain. Calculation time is reduced by fast algorithms and lookup tables.

Keywords: EARTH RESOURCES AND REMOTE SENSING

Type: IEEE Transactions on Geoscience and Remote Sensing (ISSN 0196-2892); 28; 963-969

Format: text

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