Harald Sverdrup
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Harald Ulrik Sverdrup (November 15, 1888 – August 21, 1957) was a Norwegian oceanographer and meteorologist who made a number of important theoretical discoveries in these fields. Having first worked in Bergen and Leipzig he was involved in the North Polar expedition of Roald Amundsen between 1917 and 1925, before taking the chair in meteorology at Bergen, where his primary interest slowly became oceanography.
He was made director of California's Scripps Institute of Oceanography (SIO) in 1936, initially for 3 years but the intervention of World War II meant he held the post until 1948. During 33 expeditions with the research vessel E. W. Scripps in the years 1938-1941 he produced a detailed oceanographic dataset off the coast of California. He also developed the theory of ocean circulation known as Sverdrup balance, the first truly accurate description of the phenomenon. After leaving SIO, he returned home to become director of the Norwegian Polar Institute and continued to contribute to oceanography, ocean biology and polar research.
He was a member of the American and Norwegian Academies of Science and the Swedish Order of the North Star. The sverdrup, a unit of volume flux, bears his name.
