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Hugo Hildebrand Hildebrandsson
Born	19 August 1838  Kungsholm parish
Died	29 July 1925  (aged 86) Uppsala Cathedral Assembly
Resting place	Uppsala Old Cemetery
Alma mater	Uppsala University
Occupation	Meteorologist geographer
Employer	Uppsala University
Parent(s)	Hildebrand Hildebrandsson

Hugo Hildebrand Hildebrandsson (19 August 1838 – 29 July 1925) was a Swedish meteorologist and professor at Uppsala university between 1878 and 1907.

Hildebrandsson was born in Stockholm, and educated at the Stockholm gymnasium and the university of Upsala, where he took his doctor's degree in 1858, becoming doctor of physics in 1866. In 1878, he was appointed first professor of meteorology at Upsala and director of the meteorological observatory there. He retained these posts until 1906. He was a prominent member of the International Meteorological Committee, and for some years served as its secretary. In 1880, he was elected an honorary fellow of the Royal Meteorological Society of London, which in 1920 awarded him the Symons Gold Medal. He was also a member of many other foreign scientific societies. As a meteorologist, Hildebrandsson is notable for his researches into the subject of clouds. He denominated a new sort of cloud—Cumulus Cloud. In 1880, he was requested by the International Meteorological Committee to prepare the International Cloud Atlas, a work carried out in conjunction with Leon Teisserenc de Bort. Many further observations were subsequently incorporated in Les bases de la météorologie dynamique (1907), in which Teisserenc de Bort again collaborated. His papers on centers of action of the atmosphere marked a great advance in seasonal forecasts.

In 1888, he was elected a member of the Royal Swedish Academy of Sciences, and he was also a member of the Nobel Committee for Physics. In 1897, Hildebrandsson was the first to scientifically postulate the connection between Asian weather anomalies and the tropical Pacific El Nino. (NOAA, 2011)

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Hugo Hildebrand Hildebrandsson

• Chisholm, Hugh, ed. (1922). "Hildebrandsson, Hugo Hildebrand" . Encyclopædia Britannica (12th ed.). London & New York: The Encyclopædia Britannica Company.
• NOAA (2011). El Niño. ed. C. Michael Hogan. Encyclopedia of Earth. National Council for Science and Environment. Washington DC. Retrieved from http://editors.eol.org/eoearth/wiki/El_Niño

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