A hugh body of wait that has actually the very same temperature, humidity, and air pressure at any given height; A single air mass may spread over millions of square km and also be approximately to 10 kilometres deep.

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f1) form north that 50 degrees N latitude and also south 50 degrees S latitude, and2) have have high air pressure
1. Naval air masses: form over oceans/ water evaoporates from oceans, so the air deserve to become really humid2)Continental wait masses: type over land; have less exposure to huge amounts of humidity from body of H2O.; ergo, are more drier than naval air masses
1. Warmth humid waiting masses kind over tropical oceans.2. Naval tropical wait masses that form over the Gulf of Mexico and the Atlantic s move first toward SE US.3. They then relocate N and also NE, wherein they influence weather in the central and east US.4. In the west, maritme tropical waiting masses kind over the Pacific Ocean and also mainly affect weather top top the West Coast; together they cross the coastal mountain ranges, the Pacific wait masses lose moisture.5. In summer, naval tropical aire masses usually bring hot, humid weather.6. Numerous summer showers and also thunderstorms in the eastern US build in waiting masses the have developed over the Gulf the Mexico;7. In winter, humid waiting mass can bring heavy rain or snow.
1. Cool, humid waiting masses from end icy cold N. Pacific and also N. Atlantic oceans2. Naval polar wait massesd influence the west coastline mor then the east Coast3. Even in summer, these masses the cool, humid air often bring fog, rain,a nd cool temperatures to the West Coast




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