Description of weather patterns

Essay by el3m3ntsk8ter1High School, 10th gradeA+, January 2005

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Air masses are how weather travels through out the world and the

weather creates weather patterns.Air masses and accompanying fronts do not

remain stationary for long. Although their movements are never exactly the

same, they do exhibit some patterns that help meteorologists and others predict

the weather. The boundary between two air masses is called a front. As a result,

moving fronts indicate a change in the weather. The fronts are moved in things

called Jet Streams On a weather map fronts are drawn where there is a large

change in temperature and a shift in wind direction. A front can also be

described as the boundary between adjacent Highs with different conditions.

Meteorologists often call climate patterns "oscillations," since they

change on time scales ranging from days to decades. Interactions between the

atmosphere and the oceans are at the core of most of the patterns. The

atmosphere and ocean push and pull against one another.

When one does

something, it affects the other. Since the ocean is much slower to respond to

environmental changes than the atmosphere, the two players are unequal


Jet streams are bands of very strong winds which occur at limited

altitudes usually in the 30-40000 feet area. They can be over 150 miles wide and

1000 miles long and can travel at over 250 mph. Like most winds they occur

where there is a difference between hot and cold, and in the jet stream's case

this means around the joins of tropical and polar air The jet stream is a river of

fast flowing air at high altitudes above the earth that generally flows from west to

east over the mid-latitudes.To be called a "jet stream" the winds should be faster

than 57 mph. Usually, the jet stream separates cold polar air...