¥Air Masses
¥ Large
(>1000 miles) regions with ÒuniformÓ temperature and moisture
characteristics
¥Classified by Source Region
¥ Continental (c) or Maritime (m)
¥ Polar (P) or Tropical (T)
¥Source Regions
¥ Big
in area (>>1600 km by 1600 km)
¥ Dominated
by light winds (long resident times)