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REFINE
Browse All : National Atlas and Thematic Atlas and Data Visualization from 1950
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Author
[Canada. Department of Mines and Technical Surveys, Nicholson, N. L. (Norman Leon), Comtois, Paul]
Note
4 maps showing seasonal precipitation in Canada. Each map 23 x 32 cm. Each includes a legend. Scale 1:20,000,000 or one inch to 315.6 miles. Lambert Conformal Conic Projection Standard Parallels 49˚N and 77˚N. Descriptive text on verso: The total precipitation for any season is the sum of the rainfall and one tenth of the snowfall for that particular three-month period. The mean seasonal precipitation is the mean of the seasonal totals during the period 1921 to 1950 inclusive.
Author
[Canada. Department of Mines and Technical Surveys, Nicholson, N. L. (Norman Leon), Comtois, Paul]
Note
4 maps showing seasonal temperatures in Canada. Each map 23 x 32 cm. Each includes a legend. Scale 1:20,000,000 or one inch to 315.6 miles. Lambert Conformal Conic Projection Standard Parallels 49˚N and 77˚N. Descriptive text on verso: Temperatures are observed two or more times each day at most observing stations using thermometers mounted in a thermometer shelter which protects them from the weather and direction solar radiation ... This plate shows the mean daily temperatures for January, April, July and October averaged over the 30 year period from 1921 to 1950.
Author
[Canada. Department of Mines and Technical Surveys, Nicholson, N. L. (Norman Leon), Comtois, Paul]
Note
Descriptive text on verso of (28) Snow cover: Snow cover data refer primarily to the presence and total depth of a snow cover on the surface of the earth ... Snow cover data are mainly based on the ten-year period from 1941 to 1950 inclusive.
Author
[Canada. Department of Mines and Technical Surveys, Nicholson, N. L. (Norman Leon), Comtois, Paul]
Note
2 maps showing annual precipitation in Canada. 1 map 50 x 64 cm (scale 1:10,000,000), 1 map 24 x 27 (1:20,000,000). Each includes a scale statement and a legend. Lambert Conformal Conic Projection Standard Parallels 49˚N and 77˚N. Descriptive text on verso: The official Canadian rain gauge is a small cylinder with a cross sectional area of ten square inches, mounted with the gauge rim one foot above level ground ... The man annual total precipitation and snowfall maps are primarily based on thirty-year data during the period 1921 to 1950 inclusive.
Author
[Canada. Department of Mines and Technical Surveys, Nicholson, N. L. (Norman Leon), Comtois, Paul]
Note
Descriptive text on verso of (22) Temperature ranges: The mean annual maximum temperature is the mean of the highest temperature recorded each year from 1921 to 1950 inclusive ...
Author
[Canada. Department of Mines and Technical Surveys, Nicholson, N. L. (Norman Leon), Comtois, Paul]
Note
4 maps showing growing seasons in Canada. Each map 23 x 32 cm. Each includes a legend. Scale 1:20,000,000 or one inch to 315.6 miles. Lambert Conformal Conic Projection Standard Parallels 49˚N and 77˚N. Descriptive text on verso: This plate illustrates certain aspects of the climate of the growing seasons ... The map was constructed from data for the period 1921 to 1950 inclusive ...
Author
[Canada. Department of Mines and Technical Surveys, Nicholson, N. L. (Norman Leon), Comtois, Paul]
Note
6 maps showing temperatures in Canada. 4 maps 23 x 32 cm, 2 maps 10 x 12 cm. Each includes a legend. Scale 1:20,000,000 or one inch to 315.6 miles. Lambert Conformal Conic Projection Standard Parallels 49˚N and 77˚N. Descriptive text on verso: The mean annual maximum temperature is the mean of the highest temperature recorded each year from 1921 to 1950 inclusive ...
Author
[Canada. Department of Mines and Technical Surveys, Nicholson, N. L. (Norman Leon), Comtois, Paul]
Note
Descriptive text on verso of (27) Seasonal precipitation: The total precipitation for any season is the sum of the rainfall and one tenth of the snowfall for that particular three-month period. The mean seasonal precipitation is the mean of the seasonal totals during the period 1921 to 1950 inclusive.
Author
[Canada. Department of Mines and Technical Surveys, Nicholson, N. L. (Norman Leon), Comtois, Paul]
Note
Descriptive text on verso of (25) Annual precipitation: The official Canadian rain gauge is a small cylinder with a cross sectional area of ten square inches, mounted with the gauge rim one foot above level ground ... The man annual total precipitation and snowfall maps are primarily based on thirty-year data during the period 1921 to 1950 inclusive.
Author
[Canada. Department of Mines and Technical Surveys, Nicholson, N. L. (Norman Leon), Comtois, Paul]
Note
Map shows climatic regions in Canada. Includes a legend. Features 2 diagrams: Percentage areas of climatic regions -- Areas of climatic regions and their distribution by provinces and territories. Scale 1:10,000,000 or one inch to 157.8 miles. Lambert Conformal Conic Projection Standard Parallels 49˚N and 77˚N. Descriptive text on verso: The map on this plate shows the division of Canada into climatic regions according to the classification of climates of the world developed by W. Koppen ... For this map, the temperature and precipitation criteria established by Koppen have been applied to Canadian data for the standard thirty year period, 1921 to 1950 inclusive.
Author
[Canada. Department of Mines and Technical Surveys, Nicholson, N. L. (Norman Leon), Comtois, Paul]
Note
Descriptive text on verso of (21) Seasonal temperatures: Temperatures are observed two or more times each day at most observing stations using thermometers mounted in a thermometer shelter which protects them from the weather and direction solar radiation ... This plate shows the mean daily temperatures for January, April, July and October averaged over the 30 year period from 1921 to 1950.
Author
[Canada. Department of Mines and Technical Surveys, Nicholson, N. L. (Norman Leon), Comtois, Paul]
Note
Descriptive text on verso of (30) Climatic regions: The map on this plate shows the division of Canada into climatic regions according to the classification of climates of the world developed by W. Koppen ... For this map, the temperature and precipitation criteria established by Koppen have been applied to Canadian data for the standard thirty year period, 1921 to 1950 inclusive.
Author
[Canada. Department of Mines and Technical Surveys, Nicholson, N. L. (Norman Leon), Comtois, Paul]
Note
Descriptive text on verso of (24) Growing seasons: This plate illustrates certain aspects of the climate of the growing seasons ... The map was constructed from data for the period 1921 to 1950 inclusive ...
Author
[Canada. Department of Mines and Technical Surveys, Nicholson, N. L. (Norman Leon), Comtois, Paul]
Note
6 maps showing humidity and fog in Canada during different seasons. Each map 15 x 32 cm. Each includes a legend. Scale 1:20,000,000 or one inch to 315.6 miles. Lambert Conformal Conic Projection Standard Parallels 49˚N and 77˚N. Descriptive text on verso: Humidity data are obtained from the regular reading of artificially ventilated dry and wet bulb thermometers housed in standard thermometer shelters ... The two mixing ratio maps on this plate are based on observations taken at midnight, 6 a.m., noon, and 6 p.m. Greenwich Mean Time over the ten-year period from 1941 to 1950 inclusive ...
Author
[Canada. Department of Mines and Technical Surveys, Nicholson, N. L. (Norman Leon), Comtois, Paul]
Note
Descriptive text on verso of (29) Humidity and fog: Humidity data are obtained from the regular reading of artificially ventilated dry and wet bulb thermometers housed in standard thermometer shelters ... The two mixing ratio maps on this plate are based on observations taken at midnight, 6 a.m., noon, and 6 p.m. Greenwich Mean Time over the ten-year period from 1941 to 1950 inclusive ...
Author
[Canada. Department of Mines and Technical Surveys, Nicholson, N. L. (Norman Leon), Comtois, Paul]
Note
4 maps showing snow cover in Canada. Each map 23 x 32 cm. 2 of the maps include a legend. Scale 1:20,000,000 or one inch to 315.6 miles. Lambert Conformal Conic Projection Standard Parallels 49˚N and 77˚N. Descriptive text on verso: Snow cover data refer primarily to the presence and total depth of a snow cover on the surface of the earth ... Snow cover data are mainly based on the ten-year period from 1941 to 1950 inclusive.
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