Alfred H. Thiessen

Alfred Henry Thiessen ( born April 8, 1872 in Troy, NY, † 1956) was an American meteorologist.

He began his career as a weather observer in Pittsburgh on July 1, 1898 as Assistant to the Weather Bureau (now NOAA - National Oceanic and Atmospheric Administration ). , He was in Helena, Washington, Point Reyes and Manteo worked, then as a clerk in Mount Weather, Raleigh, Indianapolis, Salt Lake City, Portland, Baltimore and Denver. He left the weather office on December 11, 1920 to serve as a Captain in the U.S. Army. From active duty, he returned as Major back on March 17, 1941 and retired on 30 April 1942.

Thiessen's best-known work of 1911 deals with the description of weather forecasts with a geometric method for sharing the earth's surface as a Dirichlet tessellation (1850 ) and Voronoi diagrams (1908 ) already known, but obviously not in meteorology for interpolation of measured values ​​in use had. The synonym " Thiessen polygons " has been established for this method.