what are the 4 main types of air masses?
231786
There are four categories for air masses: arctic, tropical, polar and equatorial. Arctic air masses form in the Arctic region and are very cold. Tropical air masses form in low-latitude areas and are moderately warm. Polar air masses take shape in high-latitude regions and are cold.
810308
The Earth's atmosphere has four primary layers: the troposphere, stratosphere, mesosphere, and thermosphere. These layers protect our planet by absorbing harmful radiation.
46412
['Stratus/strato = flat/layered and smooth.', 'Cumulus/cumulo = heaped up/puffy, like cauliflower.', 'Cirrus/cirro = high up/wispy.', 'Alto = medium level.', 'Nimbus/Nimbo = rain-bearing cloud.']
1371324
What are the four types of particles found in the atmosphere? Nitrogen 78.084% Oxygen 20.946% Argon 0.9342% Carbon dioxide 0.0381%.
831154
['Four global pressure zones: high, low, high, low from poles to equator.', 'Three global wind belts: polar easterlies, westerlies, trade winds.', 'Pressure zones and wind belts shift north and south with the seasons.', 'Land and sea breezes, winter and summer monsoon.']
596510
Atmosphere layers. Earth's atmosphere is divided into five main layers: the exosphere, the thermosphere, the mesosphere, the stratosphere and the troposphere. The atmosphere thins out in each higher layer until the gases dissipate in space. ... Air is warmer near the ground and gets colder higher up.
415820
['Exosphere: 700 to 10,000 km (440 to 6,200 miles)', 'Thermosphere: 80 to 700 km (50 to 440 miles)', 'Mesosphere: 50 to 80 km (31 to 50 miles)', 'Stratosphere: 12 to 50 km (7 to 31 miles)', 'Troposphere: 0 to 12 km (0 to 7 miles)']
1329312
['Particulate matter (PM10 and PM2. ... ', 'Ozone (O3)', 'Nitrogen dioxide (NO2)', 'Carbon monoxide (CO)', 'Sulphur dioxide (SO2)']
1225980
Maritime air masses form over water and are humid. Continental air masses form over land and are dry. Therefore, an air mass that develops over northern Canada is called a continental polar air mass and is cold and dry. One that forms over the Indian Ocean is called a maritime tropical air mass and is warm and humid.
1101772
Maritime Tropical Air Masses: warm temperatures and rich in moisture. Maritime tropical air masses originate over the warm waters of the tropics and Gulf of Mexico, where heat and moisture are transferred to the overlying air from the waters below.
1005428
["Troposphere. The troposphere starts at the Earth's surface and extends 8 to 14.5 kilometers high (5 to 9 miles). ... ", 'Stratosphere. ... ', 'Mesosphere. ... ', 'Thermosphere. ... ', 'Ionosphere. ... ', 'Exosphere. ... ', 'Credit: NASA/Goddard.']
880569
['accumulation. advisory. air. air mass. air pollution. ... ', 'balmy. barometer. barometric pressure. Beaufort wind scale. biosphere. ... ', 'calm. cell. chinook wind. cirriform. ... ', 'degree. depression. dew. dew point. ... ', 'earthlight. easterlies. eddy. EF-scale. ... ', 'fair. fall. feeder bands. fire whirl. ... ', 'gale. global warming. graupel. greenhouse effect. ... ', 'haboob. hail. halo. haze.']
1467048
Atmosphere layers. Earth's atmosphere is divided into five main layers: the exosphere, the thermosphere, the mesosphere, the stratosphere and the troposphere.
454699
Maritime tropical (mT) air masses are warm, moist, and usually unstable. Some maritime tropical air masses originate in the subtropical Pacific Ocean, where it is warm and air must travel a long distance over water. These rarely extend north or east of southern California.
799941
Four major types of air masses influence the weather in North America: maritime tropical, continental tropical, maritime polar, and continental polar. The characteristics of an air mass depend on the temperatures and moisture content of the region over which the air mass forms.
759264
['The Troposphere. This is the lowest part of the atmosphere - the part we live in. ... ', 'The Stratosphere. This extends upwards from the tropopause to about 50 km. ... ', 'The Mesosphere. The region above the stratosphere is called the mesosphere. ... ', 'The Thermosphere and Ionosphere. ... ', 'The Exosphere. ... ', 'The Magnetosphere.']
489232
['The Troposphere. This is the lowest part of the atmosphere - the part we live in. ... ', 'The Stratosphere. This extends upwards from the tropopause to about 50 km. ... ', 'The Mesosphere. ... ', 'The Thermosphere and Ionosphere. ... ', 'The Exosphere. ... ', 'The Magnetosphere.']