Buys Ballot's law

The baric wind law (even Buys- Ballot Rule) by Christoph Buys- Ballot indicates that the vast winds that blow from high pressure to low pressure areas, are deflected in the northern hemisphere to the right and in the southern hemisphere to the left.

This is due to the Coriolis force. It ensures that each moving mass on the northern hemisphere is deflected to the right. The flowing into an area of ​​low pressure air masses thus rotate counter-clockwise, which flowing from a high pressure area air masses to the right. In the southern hemisphere it is the other way around.

The large-scale winds are ultimately almost parallel to the isobars and can be prepared by direction and strength of pressure differences and calculate positions to a few percent.

The Malabar wind law can be outlined as follows: " Near the Earth's surface has an observer who turns his back to the wind, on the northern hemisphere to the right and slightly behind the high, left and slightly in front of the deep pressure. "

With the help of Malabar Wind Act and with some additional knowledge of the Synoptic Meteorology ( cyclone model) the interested layman can already draw some initial conclusions meteorological own. By observing the cloud formations, the air temperature at the bottom, the air pressure and wind speed can be quite good namely the weather situation estimate. If, for example, an observer with the wind at your back and observed falling air pressure and relatively mild temperatures with increasing wind speed, it can be assumed that it is in the warm sector of a cyclone. He has also observed behind -winding Cumulus clouds, he may expect the arrival of a cold front coming soon. If he accepts, however, true illuminative sky, low temperatures and an increase in air pressure, the cold front has already pulled through.