Alfred H. Thiessen Photo

Alfred H. Thiessen

Born: Apr 8, 1872

Death: Jan 1, 1956

Birthplace: Troy

Nationality: United States

Alfred H. Thiessen

Date of Birth : Apr 8, 1872
Date of Death : Jan 1, 1956
Birth Place : Troy

Alfred H. Thiessen was an American meteorologist after whom Thiessen polygons are named. Alfred H. Thiessen was born in Troy, New York. He earned a BS from Cornell University in 1898. His service in the Weather Bureau began at Pittsburgh as observer on July 1, 1898. He subsequently was assigned to Helena, Washington, Point Reyes and Manteo as assistant, and to Mount Weather, Raleigh, Indianapolis, Salt Lake City, Portland, Baltimore, and Denver as official in charge. He resigned from the Weather Bureau on December 11, 1920 to accept a commission as Captain in the Regular Army. He left active service, as a Major, and was reappointed at the Central Office of the Weather Bureau on March 17, 1941. He retired on April 30, 1942. His best known work dealt with the description of weather prediction with a geometric method for dividing land areas, that although known from Dirichlet Tessellation and the Voronoi Diagram, apparently had never been used in meteorology for interpolation of measurements. The synonyms Thiessen polygons or Thiessen method have become established for this application.

Also known as


  • Alfred Thiessen
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