Welcome to ClimateWNA

This is a mirror site for ClimateWNA at the Centre for Forest Conservation Genetics (CFCG) at the Department of Forest Sciences, University of British Columbia


ClimateWNA extracts and downscales PRISM (Daly et al. 2002) monthly data (2.5 x 2.5 arcmin) for the reference period (1961-1990), and calculates seasonal and annual climate variables for specific locations based on latitude, longitude and elevation (optional) for western North America, shown in the maps below. This program also downscales and integrates historical (1901-2009) (Mitchell and Jones 2005;Mbogga et al. 2009) and future climate datasets (2020s, 2050s and 2080s) generated by various global circulation models. The output includes both directly calculated and derived climate variables. Methodologies are described in Wang et al. (2012).

Software Applications

ClimateWNA desktop interface ClimateWNA web version interface


Wang, T., Hamann, A., Spittlehouse, D., and Murdock, T. N. 2012. ClimateWNA - High-Resolution Spatial Climate Data for Western North America. Journal of Applied Meteorology and Climatology, in press. Online version has been available.

Wang, T., Hamann, A., Spittlehouse, D., and Aitken, S. N. 2006. Development of scale-free climate data for western Canada for use in resource management. International Journal of Climatology, 26(3):383-397.

Hamann, A. and Wang, T. 2005. Models of climatic normals for genecology and climate change studies in British Columbia. Agricultural and Forest Meteorology 128: 211-221.

Daly. C., Gibson. W.P., Taylor, G.H., Johnson, G.L., Pasteris, P. 2002. A knowledge-based approach to the statistical mapping of climate. Climate Research, 22:99-113.

Mitchell, T.D. and Jones, P.D. 2005. An improved method of constructing a database of monthly climate observations and associated high-resolution grids. International Journal of Climatology, 25, 693-712.

Mbogga, M., A. Hamann, and T. Wang. 2009. Historical and projected climate data for natural resource management in western Canada. Agricultural and Forest Meteorology 149:881-890.

Climate Maps

Mean annual temperature and mean summer precipitation

High-resolution maps of mean annual temperature