GEOG 1112 Lecture Notes - Lecture 7: Canadian Pacific Air Lines, Air Mass (Solar Energy), Northern Hemisphere
Document Summary
Chapter 7: the short-term , day-to-day condition of the atmosphere, a snapshot of atmospheric conditions. Climate: the long-term average of weather conditions and extremes in a region. Seasonal factors such as insolation and sun angle. A body of air with uniform temperature, humidity and stability characteristics. They initially reflect the characteristics of their source region. As they migrate, they take n the characteristic of the new location. Air masses form only in the northern hemisphere, and are most developed in winter and cold-weather conditions. The cold, dense cp air displaces moist and warm air in its path, producing lifting, cooling, and condensation. An area covered by cp air in winter experiences cold, stable air, clear skies, high pressure, and anticyclonic wind flow. Two mt air masses the mt gulf/atlantic and the mt pacific influences north america. The mt gulf/atlantic air mass is unstable and active from late spring to early fall.
