|
. |
Cyclones play a crucial role in the earth's distribution of heat and moisture. Counterclockwise winds associated with cyclones transport large amounts of heat and moisture from lower to higher latitudes. Think of the surface winds around a center of low pressure as the swirling waters of a whirlpool, where the water spins around and towards the center. A similar circulation is associated with a midlatitude cyclone, where at the surface, wind spin counterclockwise and inward towards the center of low pressure.
Southerly winds east of the low transport warm and moist air northward and this moisture often contributes to the development of precipitation. A warm front marks the leading edge of this air mass. Behind the low, northerly winds transport colder and drier air southward, with a cold front marking the leading edge of this air mass.
|