High-resolution global raster climate data related to evapo-transpiration processes and rainfall deficit for potential vegetative growth. The Global-PET and Global-Aridity are both modeled using the data available from WorldClim Global Climate Data (http://WorldClim.org). 


Citation and attribution: 

  1. Zomer RJ, Trabucco A, Bossio DA, van Straaten O, Verchot LV, 2008. Climate Change Mitigation: A Spatial Analysis of Global Land Suitability for Clean Development Mechanism Afforestation and Reforestation. Agric. Ecosystems and Envir. 126: 67-80.
  2. Zomer RJ, Bossio DA, Trabucco A, Yuanjie L, Gupta DC & Singh VP, 2007. Trees and Water: Smallholder Agroforestry on Irrigated Lands in Northern India. Colombo, Sri Lanka: International Water Management Institute. pp 45. (IWMI Research Report 122).


Full description: See http://www.cgiar-csi.org/data/global-aridity-and-pet-database

Includes: 2 variables at 1 resolution

  • Global annual aridity
  • Global annual potential evapo-transpiration (PET)

  • 30 arcmin