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Abstract
Dasymetric Population Mapping: Redistributing Census Data Using Fine Scale Land Characteristics
Track: Census and Geo-Demographics
Author(s): Andrew Weiss, Tim Wade
Population and other socioeconomic datasets are generally reported within polygon enumeration units of various sizes. Dasymetric mapping creates a finer-scale population grid by assigning varying densities based on land cover, topography, and ownership. These grids can be used as continuous data or resummarized into new reporting units such as watersheds or political divisions. This is an improvement over standard area-weighted apportionment, particularly in rural areas. This paper will describe the dasymetric method, programs, methods for parameterizing the model, error assessment, and applications to the U.S. EPA's EMAP Western Landscape Assessment.
Andrew Weiss
INDUS Corporation
EPA R10 MS:CON-078
1200 Sixth Ave
Seattle , WA 98101
USA
Phone: (206) 553-0255
Fax: (206) 553-0714
E-mail: aweiss@induscorp.com
Tim Wade
U.S. EPA Office of Research and Development
79 TW Alexander Dr.
MD-56
Research Triange Park 27711
USA
Phone: (919)541-4119
E-mail: wade.timothy@EPA.gov