Natural Resources Canada

Contained within the 4th Edition (1974) of the Atlas of Canada is a set of three maps relating the effects and dependency of vegetation on environmental variables. One map shows the average annual potential evapotranspiration in inches from ground and plant surfaces for areas where there is a...

Contained within the 4th Edition (1974) of the Atlas of Canada is a set of three maps showing the length of the growing season, the start of the growing season and the end of the growing season for the fertile regions. A fourth map shows the average length in days of the frost-free period for the...

Contained within the 4th Edition (1974) of the Atlas of Canada is a collection of five maps. Two maps show, for fertile regions, the average date of the last frost in spring and the average date of the first frost in autumn. The three remaining maps show the median depth of snow cover at a scale...

Contained within the 4th Edition (1974) of the Atlas of Canada is a collection of six maps. Each map shows the median depth of snow for December 31st, January 31st, February 28th, March 31st, April 30th and May 31st respectively.

Contained within the 4th Edition (1974) of the Atlas of Canada is a map that shows the average annual number of days with precipitation. The main map is accompanied by a supplementary map at a scale of 1:40 000 000, outlining precipitation regions. As well, climatic graphs for selected stations...

Contained within the 4th Edition (1974) of the Atlas of Canada is a collection of six maps. Each map shows the average monthly precipitation for April, May, June, July, August and September.

Contained within the 4th Edition (1974) of the Atlas of Canada is a set of two maps. One map shows the average precipitation for April to September. The second shows the average precipitation for October to March.

Contained within the 4th Edition (1974) of the Atlas of Canada is a set of six maps showing the average daily minimum temperature and average daily maximum temperature for December, January and February.

Contained within the 4th Edition (1974) of the Atlas of Canada is a set of six maps showing the average daily minimum temperature and average daily maximum temperature for March, April and May.

Contained within the 4th Edition (1974) of the Atlas of Canada is a set of six maps showing the average daily minimum temperature and average daily maximum temperature for June, July and August.

Contained within the 4th Edition (1974) of the Atlas of Canada is a set of six maps showing the average daily minimum temperature and average daily maximum temperature for September, October and November.

Contained within the 1st Edition (1906) of the Atlas of Canada is a plate that shows isothermal lines for each month of the year. Within the plate there are 12 maps, one for each month that varies from January to December. These lines are drawn at intervals of 5 degrees Fahrenheit connect the...

Contained within the 5th Edition (1978 to 1995) of the National Atlas of Canada is a map that shows the annual sum of heating degree days (an indicator of building heating needs). Data for period 1941 to 1970. Companion sheet to Frost-Free Period, Growing Degree-Days, Last Frost in Spring and...

Contained within the 5th Edition (1978 to 1995) of the National Atlas of Canada is a map that shows the annual sum of normal degree-days above 5 C (an indicator of total heat available for plants in the growing season). Data for period 1941 to 1970. Companion sheet to Frost-Free Period, Heating...

Contained within the 5th Edition (1978 to 1995) of the National Atlas of Canada is a map that shows average date of occurrence of the last frost in spring. Data for period 1941 to 1970. Companion sheet to Frost-Free Period, Heating Degree-Days, Growing Degree-Days and First Frost in Autumn.

Contained within the 5th Edition (1978 to 1995) of the National Atlas of Canada is a map that shows the average date of occurrence of the first frost in autumn. The Data is for the period of 1941-1970.

Contained within the 5th Edition (1978 to 1995) of the National Atlas of Canada is a map that shows the average length of the frost-free period for all parts of Canada. Data for period 1941 to 1970. Companion sheet to Heating Degree-Days, Growing Degree-Days, Last Frost in Spring and First Frost...

Contained within the 5th Edition (1978 to 1995) of the National Atlas of Canada is a sheet which contains ten maps in all, comprising sets of five maps for each of January and July. Each set consists of a large map showing mean daily temperature and its variability, and four small maps showing...

Contained within the 5th Edition (1995) of the Atlas of Canada is a sheet which contains ten maps in all, comprising sets of five maps for each of April and October. Each set consists of a large map showing mean daily temperature and its variability, and four small maps showing mean daily maximum...

Contained within the 5th Edition (1978 to 1995) of the National Atlas of Canada is a plate with two maps. The first map that shows the longest day and second map shows shortest day; each shows length of day at different latitudes. Maps also contain time zone outlines. Graph shows length of day...