Research Article

Impact of Continuous Cropping on the Diurnal Range of Dew Point Temperature during the Foliar Expansion Period of Annual Crops on the Canadian Prairies

Table 1

Location of selected climate stations, daily mean air temperatures, and land use areas of corresponding ecodistricts for census years 1961 and 2006 in the Canadian Prairies.

Climatic zoneStation nameProvince Latitude
(°N)
Longitude
(°W)
Altitude
(m)

(°C)
Ecodistrict Total land area
(k ha)
Total annual crop areaSummerfallow area
(k ha)(k ha)
1961200619612006

SubhumidCalgaryAlberta51.1114.01,084.115.0798697.9284.2407.8107.214.6
EdmontonAlberta53.3113.6723.315.0727716.4327.5421.967.911.9
Grande Prairie Alberta55.2118.9669.015.0599142.254.969.722.96.2
Prince AlbertSaskatchewan53.2105.7428.216.5702296.5151.7197.749.59.4
Red Deer Alberta52.2113.9904.614.8737335.8166.3174.415.53.5
The Pas Manitoba54.0101.1270.416.7667311.51.51.31.00.1
WinnipegManitoba50.097.2238.718.4849913.4505.4690.489.58.2

SemiaridEstevanSaskatchewan49.2103.0580.618.2794637.0271.5371.0218.763.6
LethbridgeAlberta49.6112.8928.716.8793763.7276.8378.3129.228.6
Medicine HatAlberta50.0110.7716.918.2815405.748.264.058.435.2
Moose JawSaskatchewan50.3105.6576.718.1822321.878.4132.678.820.8
ReginaSaskatchewan50.4104.7577.617.6792896.4403.9648.9318.050.0
SaskatoonSaskatchewan52.2106.7504.117.2774101.140.058.930.57.2

Daily mean temperature from 1961 to 2006 during the foliar expansion period (DOY 165 to 195) of annual crops.