Dobson unit

Dobson unit
(DU)
   a unit used in geophysics to measure the ozone in the atmosphere. One Dobson unit represents the amount of atmospheric ozone that would form a uniform layer 0.01 millimeter (10 micrometers) thick at standard temperature (0 °C) and pressure (1 atmosphere or 1013.25 millibars). The Dobson unit equals 10-5 atmo-meter. Under normal conditions, the atmosphere contains about 300 Dobson units of ozone, but this falls to 100 Dobson units or less in the "ozone holes" over the Earth's poles. The unit is named for the British physicist G.M.B. Dobson; in 1920 he invented a spectrometer to measure ozone concentrations from the ground.

Dictionary of units of measurement. 2015.

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  • Dobson unit — The Dobson unit (DU) is a unit of measurement of atmospheric ozone columnar density, which is dominated by ozone in the stratospheric ozone layer. One Dobson unit refers to a layer of ozone that would be 10 µm thick under standard… …   Wikipedia

  • dobson unit — noun Usage: usually capitalized D Etymology: after Gordon M.B. Dobson died 1976 British physicist : a unit of atmospheric ozone content above a given spot on earth s surface …   Useful english dictionary

  • Dobson — may refer to: People For a listing of people with the surname Dobson, see Dobson (surname). Places Dobson High School in Arizona, USA Dobson, North Carolina, USA Mount Dobson, New Zealand Dobson, New Zealand Things Dobson (Litigation Guardian of) …   Wikipedia

  • Dobson spectrometer — The Dobson spectrometer, also known as the Dobson Ozone Spectrometer or the Dobson ozone spectrophotometer, is an instrument used to measure the amount of ozone in the atmosphere. Ozone are O3 molecules that absorb the specific wavelength of… …   Wikipedia

  • Dobson-Spectrophotometer — Mit einem Dobson Spektrophotometer ist es möglich, den Gesamt Ozongehalt der Atmosphäre über einem Beobachtungsort zu bestimmen. Dobson Spektrophotometer D071 des Meteorologischen Observatoriums Lindenberg Inhaltsverzeichnis 1 Geschichte 2 …   Deutsch Wikipedia

  • Dobson-Einheit — Einheit Norm Einheitenname Dobson Einheit Einheitenzeichen DU Beschriebene Größe(n) Gesamt Ozon (total ozone), Stoffmenge pro Flächeneinheit in einer vertikalen Luftsäule Dimensionssymbol …   Deutsch Wikipedia

  • Dobson-Einheit — Dob|son Ein|heit [ dɔbsn ; nach dem brit. Physiker G. M. B. Dobson (1889–1976)]; Einheitenzeichen: D. U. (Abk. für gleichbed. engl. Dobson unit): ein Maß für das in einer (gedachten) Luftsäule über dem Erdboden im Normzustand enthaltene ↑ Ozon 1… …   Universal-Lexikon

  • Unité Dobson — Pour les articles homonymes, voir DU et Dobson. L unité Dobson (DU pour Dobson unit) est une unité de mesure de la masse surfacique de l ozone atmosphérique, spécifiquement dans la couche d ozone de la stratosphère. Une unité Dobson correspond à… …   Wikipédia en Français

  • G. M. B. Dobson — Gordon Miller Bourne Dobson FRS (25 February 1889 11 March 1976) was a British physicist and meteorologist who did important work on ozone. Gordon Dobson, 1930s? He was educated at Sedbergh School and Caius College, Cambridge where he graduated… …   Wikipedia

  • Brewer-Dobson circulation — is a model of atmospheric circulation, proposed by Alan Brewer in 1949 and Gordon Dobson in 1956, that attempts to explain why tropical air has less ozone than polar air, even though the tropical stratosphere is where most atmospheric ozone is… …   Wikipedia

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