Climatic Regions Thornthwaite Classification Moisture Regions

Contained within the 5th Edition (1978 to 1995) of the National Atlas of Canada is a map that shows the distribution for the two moisture aspects of Thornthwaite's climate classification system. The moisture regions are shown as coloured areas representing six moist and three dry climates; and seasonal variation of effective moisture shown as linework indicating dry periods in moist climates and moist periods in dry climates.

Data and Resources

Additional Info

Field	Value
Last Updated	April 17, 2026, 17:40 (UTC)
Created	April 17, 2026, 17:40 (UTC)
contact_email	geoinfo@nrcan.gc.ca
contact_person	{}
criticality_level	[]
data_dictionary	["climatology_meterology_atmosphere"]
geographic_scope	[]
open_canada_collection	geogratis
open_canada_date_published	1990-03-10 00:00:00
open_canada_keywords	{"fr": ["climat", "données météorologiques", "météorologie", "précipitation"], "en": ["climate", "meteorological data", "meteorology", "precipitation"]}
open_canada_subject	["nature_and_environment", "science_and_technology"]
sensitivity_level	unrestricted
title_fr	Régions climatiques - Classification de Thornthwaite – Régions hydriques
update_frequency	as_needed