Can someone please provide a climate zone shape file for Canada? Preferably based on aridity index. I have searched a lot but have not found any sources for it. Thank you!
check the images and navigate back to the sources.... you might get a hit or a close-enough
https://www.google.ca/search?q=environment+canada+climate+zones&tbm=isch&tbo=u&source=univ&sa=X&ved=...
for a start http://www.parc.ca/pdf/research_publications/summary_docs/SD2003-01.pdf Prairies report
... or have a look at the Living Atlas of the World: Living Atlas of the World | ArcGIS
