[Gasification] THORNTHWAITE CLIMATE CLASSIFICATION SYSTEM
Benjamin Domingo Bof
benjaminbof at yahoo.com.ar
Sun Jun 28 16:15:23 CDT 2009
C. W. Thornthwaite
>From Wikipedia, the free encyclopedia
Jump to: navigation, search
Charles Warren Thornthwaite (March 7, 1899 - June 11, 1963) was an American geographer and climatologist. He is best known for devising a climate classification system, published in 1948, that is still in use around the world, and also for his detailed water budget computations of potential evapotranspiration. He was Professor of Climatology at Johns Hopkins University, adjunct professor at Drexel University, President of the Commission for Climatology of the World Meteorological Organization, a recipient of the Outstanding Achievement Award of the Association of American Geographers, and the Cullum Medal from the American Geographical Society.
2 Personal life
4 Further reading
5 External links
Thornthwaite was born in Bay City, Michigan. He attended Central Michigan Normal School, graduating in 1922. He taught high school for the next two years in Owosso, Michigan, then for the next four years he was employed as a geographer for the Kentucky Geological Survey. While thus employed, he also became an assistant professor in the University of Oklahoma Department of Geography, serving there from 1927 to 1934. Meanwhile, he studied geography through the auspices of the University of California, Berkeley, a student of Carl Sauer. He obtained his of Ph.D. in geography in 1930, successfully defending a thesis on the subject, ‘Louisville, Kentucky: a study in urban geography’, a research project which used aerial photographs, field observation, data analysis and detailed mapping to describe the urban geography of Louisville. He quickly moved away from geography to climatology, but recent scholarship suggests he was nonetheless ahead of his time
in his thesis project and that many of the techniques he used would later be standard procedures.
At Central Michigan Normal School he became friends with John Leighly and later, they both studied at Berkeley, with Leighly becoming his mentor. Leighly, a professor at UC Berkeley for 62 years, would write his obituary.
In 1931 he published “The Climates of North America: According to a New Classification” and his true vocation as a climatologist was launched, a vocation that married the science of climatology with that of geography. In 1934, he left the University of Oklahoma to study internal migration within the United States (at the University of Pennsylvania). In 1935, he was appointed chief of the climatic and physiographic research division of the US Soil Conservation Service. The division ceased to function in 1942, but he remained on staff of the USDA until 1946. Included in his output from this period was the USDA technical bulletin, written with Benjamin Holzman, Measurement of Evaporation from Land and Water Surfaces.
Leaving government in 1946, he opened the Laboratory of Climatology in Seabrook, New Jersey, which he operated until his passing in 1963. The facility continued to operate under the management of John R. Mather. One of his first papers would also be his most cited: "An Approach Toward a Rational Classification of Climate" (1948). This paper would be used by scientists across North America and around the world. It incorporates evapotranspiration, temperature and precipitation information and is widely used in studying animal species diversity and potential impacts of climate change.
Mather shared authorship with Thornthwaite in their 1955 monograph "The water balance", The Water Balance was Thornthwaite’s second major contribution to climatology, after Rational Classification. The water budget was a simple and easily used methodology for estimating water surpluses and runoff, and the difference between surpluses and runoff, to estimate the amount of water would recharge an aquifer.
He was a professor of climatology at Johns Hopkins University from 1947 to 1955.
¡Viví la mejor experiencia en la web!
Descargá gratis el nuevo Internet Explorer 8
More information about the Gasification