| A | B |
| Homogeneous | being the same throughout |
| Tornado Alley | is a term most often used in reference to the area of the United States in which tornadoes are most frequent |
| Tropical air mass | a wam to hot air mass that forms in the subtropics |
| Source region | the area where an air mass starts its characteristic properties of temperature and moisture |
| Polar air mass | an air mass that starts over an area of high latitude |
| Nor'easter | is a macro-scale storm along the East Coast of the United States |
| Maritime air mass | an air mass that starts over an ocean |
| Lake effect snow | snow showers associated with cP air mass to which moisture and heat are added from below as it transverses a large and relatiively warm body of water |
| Isohyet | a line connecting places that have similiar rain fall |
| Continental air mass | an air mass that forms over land |
| Arctic air mass | a bitterly cold air mass that forms over the frozen arctic |
| Air mass weather | the conditions experienced in an area as an air mass passes over it |
| Air mass | is a large volume of air that have characteristics of temperature and water vapor content |
| icecap | is an ice mass that covers less than 50 000 km² of land area |
| Sahara Desert | is the world's largest hot desert and the world's second largest desert after Antarctica |
| Siberian high | is a massive collection of cold or very cold dry air that accumulates on the Eurasian terrain for much of the year |
| ITZC | the zone where trade winds converge between the northern and southern hemispheres |
| Siberian Express | the arrival of an extremely cold air mass of Arctic origins |