Deriving a global river network map and its sub-grid topographic characteristics from a fine-resolution flow direction map

This paper proposes an improved method for converting a fine-resolution flow direction map into a coarse-resolution river network map for use in global river routing models. The proposed method attempts to preserve the river network structure of an original fine-resolution map in the upscaling proce...

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Bibliographic Details
Main Authors: S. Kanae, T. Oki, D. Yamazaki
Format: Article
Language:English
Published: Copernicus Publications 2009-11-01
Series:Hydrology and Earth System Sciences
Online Access:http://www.hydrol-earth-syst-sci.net/13/2241/2009/hess-13-2241-2009.pdf