In a low pressure system, the high temperature causes the air to rise creating a partial vacuum. Air from surrounding regions rushes in to fill the vacuum. If the incoming air passes over large water bodies, it brings moisture with it and causes precipitation.
Generally, a drop in air pressure causes precipitation - rain, snow, sleet, hail, and so forth.
This is a precipitation reaction.
movement of weather fronts
Another way winds influence precipitation patterns is by going over mountains. When air masses go over over mountains, they cool as they rise over the mountains. As they cool cool they can no longer hold as much moisture as when they were warmer, this causes cloud development and precipitation.
Because the pressure increases The real answer is: Charles's Law. He found that if you increase the temperature of a constant pressure the volume increases also.
Low and high pressure systems. Obviously if you have a Low pressure system the barometric pressure will get low. High pressure causes the barometric pressure to rise.
Unequal heating of the Earth - this causes Winds; because the air pressure has to where it can [is allowed to] go and that is why their are differences in air pressure. Low pressure systems are the active features of the Atmosphere - because High pressure systems occur wherever Lows do not.
hot air causes a low pressure system, cold air then rushes towards this low pressure system to equalise the earths atmosphere. the unequal heating causes unequal pressure systems and air moves to and from those pressure systems.
The movement of wheather fronts from high pressure (cyclone) to low pressure systems(anticyclone).
hot air causes a low pressure system, cold air then rushes towards this low pressure system to equalise the earths atmosphere. the unequal heating causes unequal pressure systems and air moves to and from those pressure systems.
the uneven heating
Generally, a drop in air pressure causes precipitation - rain, snow, sleet, hail, and so forth.
This is a precipitation reaction.
the shifting of pressure belts causes some places to be in different wind belts during the year thus affecting their climates... the belts of precipitation associated with them also change their positions when pressure belts shift with the seasons.
Tornadoes are produced by thunderstorms, which are generally associated with low pressure systems.
movement of weather fronts
If the precipitation is increasing, causes to have more flood and affects all living organism and causes some destroy too.