The C.H.D. Buys Ballot reference article from the English Wikipedia on 24-Apr-2004
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C.H.D. Buys Ballot

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Christophorus Henricus Diedericus Buys Ballot (1817-1890) was the third professor (after Haring and Mulder) to be appointed at Utrecht University.

He's most known for his accomplishments in the field of meteorology, specifically the explanation of the direction of air flow in large weather systems. Furthermore he founded the Royal Dutch Meteorological Institute (KNMI) in 1854. He was one of the first to see the need for international cooperation, and in 1873 became the first chairman of the International Meteorological Committee, a precursor of the World Meteorological Organization (WMO).

Also well known is Buys Ballot's law, which states that if a person stands with his back to the wind, the high atmospheric pressure is found to his right in the Northern Hemisphere.