Tropical air masses are generally restricted to the southern states during much of the winter. However, southerly winds ahead of migrating cyclones occasionally transport a tropical air mass northward during the winter season.
TROPICAL AIR MASS An air mass that forms in the tropics or subtropics over the low latitudes. Maritime tropical air is produced over oceans and is warm and humid, while continental tropical air is formed over arid regions and is very hot and dry.
Tropical air mass A warm-to-hot air mass that forms in the subtropics.
Tropical depression A mass of thunderstorms and clouds generally with a cyclonic wind circulation of between 20 and 34 knots ...
Maritime Tropical Air Mass - an air mass characterized by warm, moist air
Maximum Thermometer - a thermometer designed to register the maximum temperature during a given interval of time (generally a day) ...
Continental tropical air mass - hot dry air found in places like the Sahara desert.
Maritime polar air mass - cool wet air. Think England.
Continental polar air mass - cold dry air which sometimes produces snow.
Polar FrontA semipermanent, semicontinuous front that separates tropical air masses from polar air masses.
Maritime Tropical Air Mass:Maritime Tropical Air Mass: "MT": A warm & humid air mass wich forms over the North Pacific & Atlantic Oceans.
Maximum Temperature: The highest temperature during a specific period.
MB: Millibar.
a maritime tropical air mass would be warm and moist. The terms refer to the fact that air masses acquire the properties of the terrain over which they move.
POLAR FRONT A semi-continuous, semi-permanent boundary between polar air masses and tropical air masses. An integral part of an early meteorological theory known as the Polar Front Theory.
Polar Front: Front that separates the Polar Air Mass from the Subtropical Air Mass.
Precipitation: Any form of water, liquid or solid, derived from the atmosphere that falls to the earth's surface. It can be rain, snow, hail etc.
A dry air mass originating over a large land area. Contrast with tropical air mass.
Continuum Storm (CTM)
In solar-terrestrial terms, general term for solar noise lasting for hours and sometimes days.
A body of air that extends hundreds or thousands of kilometers horizontally and is relatively uniform in temperature and moisture content (see continental arctic, continental polar, continental tropical, maritime polar, and maritime tropical air ...
For example, it is lower in winter, and in cold/polar air masses (typically 8 to 10 km/25000 to 30000 ft), than in high summer, and in warm/sub tropical air masses (typically 12 to 14 km/35000 to 45000 ft) ...
The scattered thunderstorms that develop in the summer are called air-mass thunderstorms because they form in warm, maritime tropical air masses away from other weather fronts.
Contrast with tropical air mass.Continental ShelfThe zone bordering a continent and extending to a depth, usually around 100 FM, from which there is a steep descent toward greater depth.
 See also: Tropical air, Air mass, Air, Temperature, Surface
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