ozone hole — noun A region of the stratosphere over Antarctica (and a smaller one over the Arctic) that is depleted of ozone in the local spring. Callis says that the ozone hole now developing over the Antarctic is as deep as last years hole, but seems to… … Wiktionary
Ozone depletion — Image of the largest Antarctic ozone hole ever recorded (September 2006) Ozone depletion describes two distinct but related phenomena observed since the late 1970s: a steady decline of about 4% per decade in the total volume of ozone in Earth s… … Wikipedia
Ozone layer — The ozone layer is a layer in Earth s atmosphere which contains relatively high concentrations of ozone (O3). This layer absorbs 97–99% of the Sun s high frequency ultraviolet light, which is potentially damaging to the life forms on Earth.[1] It … Wikipedia
ozone — 01. The earth will receive more ultraviolet rays as the [ozone] is destroyed. 02. The destruction of the [ozone] has resulted in serious eye injury to sheep in the south of Argentina. 03. There is now a noticeable hole in the [ozone] over the… … Grammatical examples in English
ozone depletion — /oʊzoʊn dəˈpliʃən/ (say ohzohn duh pleeshuhn) noun a decline in the amount of ozone in the earth s stratosphere. Ozone depletion occurs in the stratosphere in response to the breakdown of compounds such as chlorofluorocarbons containing chlorine… …
Scientific Assessment of Ozone Depletion — The Scientific Assessment of Ozone Depletion is a sequence of reports sponsored by WMO/UNEP. The most recent is the [http://www.wmo.int/pages/prog/arep/gaw/ozone 2006/ozone asst report.html 2006 report] .The reports were set up to inform the… … Wikipedia
Dobson ozone spectrophotometer — Original Dobson Spectrometer, using photographic plates The Dobson spectrophotometer, also known as Dobsonmeter or Dobson spectrometer, is the earliest instrument used to measure atmospheric ozone. It was invented in 1926 by Gordon Dobson.[1] A… … Wikipedia
Antarctica — /ant ahrk ti keuh, ahr ti /, n. the continent surrounding the South Pole: almost entirely covered by an ice sheet. ab. 5,000,000 sq. mi. (12,950,000 sq. km). Also called Antarctic Continent. * * * Antarctica Introduction Antarctica Background:… … Universalium
Antarctica — AntarcticaThe Argentine, British and Chilean claims all overlap, and have caused friction. Australia claims the largest area.Countries interested in participating in a possible territorial division of AntarcticaThis group of countries… … Wikipedia
environment — environmental, adj. environmentally, adv. /en vuy reuhn meuhnt, vuy euhrn /, n. 1. the aggregate of surrounding things, conditions, or influences; surroundings; milieu. 2. Ecol. the air, water, minerals, organisms, and all other external factors… … Universalium
Earth Sciences — ▪ 2009 Introduction Geology and Geochemistry The theme of the 33rd International Geological Congress, which was held in Norway in August 2008, was “Earth System Science: Foundation for Sustainable Development.” It was attended by nearly… … Universalium