Mean January daily temperature The map shows the mean January daily temperature based on the 30-year period 1941-1970. The lowest mean January daily temperatures are below -35 degrees Celsius and are located on Ellesmere Island and on Axel Heiberg Island and south of the Boothia Peninsula in Nunavut. The highest mean January daily temperatures are above 0 degrees Celsius and are located on the west coast of British Columbia. Generally, the mean increases from north to south, from -35 to -2.5 degrees Celsius. In Canada temperature regimes change drastically from season to season, and even within a season there are often marked changes which affect the whole nature and character of outside activities. The major factors that affect temperature are latitude and thus the length of daylight; elevation; distribution of land and water; and prevailing winds and storm tracks. Although the least direct and the least intense incoming solar radiation occurs in December, there is a lag in the cooling of the Earth’s surface. As a result, the coldest month in Canada is normally January. All temperature reporting stations in Canada are equipped with self-registering maximum and minimum thermometers, which are mounted in standard louvred instrument shelters. Ideally, the shelters are located a little more than a metre above the ground in open spaces that are considered to be representative of the area. The thermometers are read once or several times each day to obtain daily maximum and minimum temperature values. Daily values of maximum and minimum temperature are collected every month from approximately 2000 stations across Canada. From these data, various statistics, such as monthly means, are calculated. The mean daily maximum temperature for any month is the mean of all daily maximum temperatures recorded in that particular month for the period of record. The mean daily minimum temperature is calculated similarly. The mean daily temperature for the month is the average of the mean daily maximum and mean daily minimum values. For obvious socio-economic reasons, the climatological stations used in the analysis are not uniformly located across Canada. The majority are situated in populated areas along the southern fringe of the country. In the mountainous regions of western Canada, most of the stations are located in accessible valleys, and the pattern of the maps is generally indicative of valley conditions only. No attempt was made to allow for detailed topographic effects, as such a pattern would be too complicated to display on the scale used. 1978-01-01 2017-01-26 Natural Resources Canada NRCan.geogratis-geogratis.RNCan@canada.ca Form DescriptorsGovernment and PoliticsNature and EnvironmentScience and Technologyclimatehydrologytemperaturewater balance Download English JPEG through HTTPJPG http://ftp.geogratis.gc.ca/pub/nrcan_rncan/raster/atlas/eng/hydro_1978/water_quantity_temperature_winds/14_Mean_January_Daily_Temperature_1978_150.jpg Download English PDF through HTTPPDF http://ftp.geogratis.gc.ca/pub/nrcan_rncan/raster/atlas/eng/hydro_1978/water_quantity_temperature_winds/14_Mean_January_Daily_Temperature_1978_150.pdf Download French JPEG through HTTPJPG http://ftp.geogratis.gc.ca/pub/nrcan_rncan/raster/atlas/fra/hydro_1978/water_quantity_temperature_winds/14_Temperature_Quotidienne_Moyenne_Janvier_1978_150.jpg Download French PDF through HTTPPDF http://ftp.geogratis.gc.ca/pub/nrcan_rncan/raster/atlas/fra/hydro_1978/water_quantity_temperature_winds/14_Temperature_Quotidienne_Moyenne_Janvier_1978_150.pdf

Mean January daily temperature

The map shows the mean January daily temperature based on the 30-year period 1941-1970. The lowest mean January daily temperatures are below -35 degrees Celsius and are located on Ellesmere Island and on Axel Heiberg Island and south of the Boothia Peninsula in Nunavut. The highest mean January daily temperatures are above 0 degrees Celsius and are located on the west coast of British Columbia. Generally, the mean increases from north to south, from -35 to -2.5 degrees Celsius. In Canada temperature regimes change drastically from season to season, and even within a season there are often marked changes which affect the whole nature and character of outside activities. The major factors that affect temperature are latitude and thus the length of daylight; elevation; distribution of land and water; and prevailing winds and storm tracks. Although the least direct and the least intense incoming solar radiation occurs in December, there is a lag in the cooling of the Earth’s surface. As a result, the coldest month in Canada is normally January. All temperature reporting stations in Canada are equipped with self-registering maximum and minimum thermometers, which are mounted in standard louvred instrument shelters. Ideally, the shelters are located a little more than a metre above the ground in open spaces that are considered to be representative of the area. The thermometers are read once or several times each day to obtain daily maximum and minimum temperature values. Daily values of maximum and minimum temperature are collected every month from approximately 2000 stations across Canada. From these data, various statistics, such as monthly means, are calculated. The mean daily maximum temperature for any month is the mean of all daily maximum temperatures recorded in that particular month for the period of record. The mean daily minimum temperature is calculated similarly. The mean daily temperature for the month is the average of the mean daily maximum and mean daily minimum values. For obvious socio-economic reasons, the climatological stations used in the analysis are not uniformly located across Canada. The majority are situated in populated areas along the southern fringe of the country. In the mountainous regions of western Canada, most of the stations are located in accessible valleys, and the pattern of the maps is generally indicative of valley conditions only. No attempt was made to allow for detailed topographic effects, as such a pattern would be too complicated to display on the scale used.

Resources

Resource Name Resource Type Format Language Links
Download English JPEG through HTTP Dataset JPG English
French
Access
Download English PDF through HTTP Dataset PDF English
French
Access
Download French JPEG through HTTP Dataset JPG English
French
Access
Download French PDF through HTTP Dataset PDF English
French
Access

Geographic Information

Spatial Feature

Comments(0)