- 暖气团 nuǎnqìtuán warm air massA moving mass of air that is warmer than the surface over which it flows; typically formed over tropical continents or oceans.
- 冷气团 lěngqìtuán cold air massA large body of air moving across the Earth's surface that is colder than the ground it travels over; often originating in polar regions, it causes local temperatures to drop.