THE HUDSON BAY AIR MASS TYPE–SOME CLIMATOLOGICAL IMPLICATIONS

摘要

ABSTRACTA substantial percentage of days with below normal temperatures in central Illinois during May and June (1956‐1965) appear to be associated with polar air masses which traverse the Hudson Bay area before entering the Midwest. January departures, in contrast, are related to polar air masses that enter the United States near the Mackenzie River in western Canada. The general influences of the Hudson Bay area on climate are discusse