The ozone layer is a layer in the Earth's atmosphere which contains relatively high concentrations of ozone (O3). This layer absorbs 93-99% of the sun's high frequency ultraviolet light, which is potentially damaging to life on Earth. It is mainly located in the lower portion of the stratosphere from approximately 10 km to 50 km above Earth's surface.
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CFCs (Chlorofluorocarbons) and Ozone Depletion
CIESIN thematic guide.
CIESIN Thematic Guide on Ozone Depletion
Overview of key concepts related to stratospheric ozone depletion, including the role of chlorofluorocarbons, health effects from increased exposure to UV-B radiation, environmental effects, and policies and responses.
Climate Prediction Center's Stratosphere Home Page
NOAA organization's UV Index forecasts and maps of stratospheric ozone depletion, daily hemispheric ozone, and stratospheric temperature time series.
EFCTC : Fluorocarbons (HCFC, HFC, PFC) and Sulphur hexafluoride (SF6)
Presents information about fluorocarbons (HCFC, HFC, PFC) and sulphur hexafluoride (SF6), including applications, physical and chemical properties, environmental impact and regulatory aspects.
International Ozone Services Inc.
Offers worldwide ozone and UV calibration services to customers with Brewer Ozone Spectrophotometer instruments.
NSF Polar UV Monitoring Network
Monitors UV radiation at six sites in Antarctica, Argentina, California, and Alaska.
The Origin of the Ozone Hole: Natural or Anthropological
Article by James A. Marusek discussing the two theories that explain ozone depletion. One theory postulates that the cause is man made, and the other, that the cause is a weakening of the Earth’s magnetic field. [PDF]
The Ozone Hole Tour
An overview of the ozone layer and the development of the ozone hole over the Antarctic hosted by the Centre of Atmospheric Science, University of Cambridge.
Information from Wikipedia on this layer in the lower portion of the stratosphere, from approximately 10 km to 50 km above Earth's surface, which contains a relatively high proportion of ozone.
Ozone UK, Europe and Global.
Ozone TOVS TOMS and GOME data. Unique NW Euro Maps and graphics. Calculated global and UK averages using GRIB data. Links to Ozone, Weather and Climate.
SAGE III Ozone Loss and Validation Experiment (SOLVE)
a measurement campaign sponsored by NASA's Ames Research Center designed to examine the processes controlling ozone levels at mid- to high latitudes.
The Science of Stratospheric Ozone Depletion
Union of Concerned Scientists primer on the ozone layer, its importance, the effects of human-produced chemicals, and prospects for the future.
This Environment Canada site deals with issues, programs and other aspects having to do with stratospheric ozone.
Stratospheric Ozone Depletion
NASA resource file for students and teachers
Stratospheric Ozone Monitoring and Research in NOAA
Provides a comprehensive technical primer on the ozone layer and its depletion, as well as access to real-time and historical monitoring data, descriptions of instruments used to detect ozone, and related information and links.
UNEP OzonAction Programme
A global clearinghouse service and Regional Networks of NOUs that promote the exchange of information, experience and know-how required to meet commitments under the Montreal Protocol.
USDA UV-B Monitoring and Research Program
Collects information on geographical distribution and trends of UVB radiation in the US, in order to assess potential impacts of increasing ultraviolet radiation levels on agricultural crops and forests.
Worrest, Robert C.
About the Director of the US Global Change Research Information Office (GCRIO) and Associate Director for CIESIN Washington Operations, and his publications on the effects of stratospheric ozone depletion on the biosphere.
Analyses of material flows of chemicals in the environment, including chemicals damaging the ozone layer. [Site in English and German. Flags are language selectors.]