Market Access Density


Citation Information

Title: Market Access Density

Source: Verburg et al. (2011)

Date: 2011

Citation: Verburg, P. H., E. C. Ellis, and A. Letourneau. 2011. A global assessment of market accessibility and market influence for global environmental change studies. Environmental Research Letters, 6. [online] URL:


Global grid of a market access density ($/km) based on travel time to cities of 50,000 or larger and purchasing power parity. Native resolution is 30 arc second projected in Geographic Coordinate System WGS 1984.

Processing Procedure

1. In ArcMap 10.0, use zonal statistics to calculate mean values within each GLU.

Data Coverage

Data is coded by the number of cells covered by the native data (1), data extrapolation (2), and not covered by either (3).

DGG Cell Coverage Report
Coverage Codes Frequency Percent Valid Percent Cumulative Percent
Valid 1 1335413 92.4 92.4 92.4
3 109551 7.6 7.6 100.0
Total 1444964 100.0 100.0
© Copyright 2012 GLOBE. All Rights Reserved.
goin up