lereveurat

a cyclone is the rotation of a volume of air around an area of low atmospheric pressure. This rotation is clockwise in the southern hemisphere, and counter-clockwise
in the northern hemisphere. Cyclones are responsible for a wide variety of different meteorological phenomena such as tropical cyclones and tornadoes. Because of
this, most weather forecasters avoid using the term cyclone without a qualifying term.
The center of a cyclone is a low-pressure region. Near the center of the cyclone the pressure gradient force, from high- to low-pressure regions, and the Coriolis
force must be in an approximate balance. The wind flow around a large cyclone is counterclockwise in the northern hemisphere, and clockwise in the southern
hemisphere, due to the Coriolis effect. Large anticyclonic storms are extremely rare on Earth, though Jupiter's Great Red Spot storm is anticyclonic.
On satellite imagery, a polar low appears very similar to a hurricane, with an eye and convective bands wrapping around the center. Research aircraft data suggests
that these "arctic hurricanes" may be warm-core systems. Lack of weather data makes forecasting of polar lows difficult. Most predictions in this area are more
subjective than the prediction of tropical cyclones.