SailNet Community - View Single Post - Low-Pressure Systems View
Single Post post #1 of Old 12-08-2000 Thread Starter Michael
Carr Contributing Authors Join Date: Jan 2000 Posts: 57 Thanks:
0 Thanked 1 Time in 1 Post Rep Power: 16 Low-Pressure Systems
Low-pressure systems redistribute hot and cold air, which often
results in strong winds and seas. What is a low-pressure system?
And why should we be interested in "lows"? A low is a weather
system that draws air inward along the earth's surface and then
pushes that air upward until it reaches the jet stream. There,
it is siphoned off downstream, which permits a continued inward
flow of air on the surface.  Why does this occur? Because nature
needs methods of redistributing hot and cold throughout the
atmosphere and lows are a very efficient means of accomplishing
this mission. Nature takes cold, dry air and warm, moist air on
the earth's surface, brings these two quantities together and
starts mixing them.  Cold, dry air sinks and hugs the earth's
surface whil