Growing Days

Global_growdays

Citation Information

Title: Growing Days

Source: IIASA Global Agro-Ecological Zones (GAEZ).

Date: 2001

Citation: Global Agro-Ecological Zones (GAEZ). 2011b. Agro-Climatic Constraints. [online] URL: http://www.fao.org/nr/gaez/about-data-portal/agricultural-suitability-and-potential-yields/en/. Accessed June 6, 2011.

Description

Global grid of number of growing days based on temperature and precipitation constraints, as well as potential for pest damage. Native resolution is 0.5° projected in Geographic Coordinate System WGS 1984

Processing Procedure

1. In ArcMap 10.0, convert native data to 30 arc second resolution.

2. Extrapolate existing data using a 30×30 cell rectangular neighborhood.

3. 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 1438075 99.5 99.5 99.5
2 1245 .1 .1 99.6
3 5644 .4 .4 100.0
Total 1444964 100.0 100.0
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