UV radiation levels are directly affected by ozone concentrations. These web sites offer information on ozone related studies, available data and current international efforts to protect the ozone layer.

Ozone Pages
General Information
	The United Nation's Environmental Program's Ozone Secretariat page contains in depth information ozone treaties, ratification status and meeting reports.
	The United Nation's Environmental Program Ozone Action pages contain information on upcoming events related to ozone depleting substances and UNEP activities such as International Ozone Day.
	The British Atmospheric Data Centre offers datasets on a number of different parameters including total ozone and stratospheric ozone from past experiments and extensive links to other web pages containing information on a wide range of topics.
	WMO/UNEP Scientific Assessment of Ozone Depletion 1998 provided by NOAA's Aeronomy Laboratory.
	WMO/UNEP Scientific Assessment of Ozone Depletion 1994 provided by NOAA's Aeronomy Laboratory.
Ground Based
	Supplied by the Canadian Government, this site supplies information on past monthly ozone levels as well as the most recent week's ozone levels.
	Ozone measurements from Belgium's Royal Meteorological Institute. Total column as well as vertical profiles from sonde measurements from Uccle are updated approximately weekly
	Denmark: Ozone information for the general public including recent ozone measurements and forecasts. This site is updated daily. The site is currently in Danish only.
	Ozone and UV Index and information for the general public including recent ozone and UV measurements as well as UV Index forecasts. This site is updated daily. Some of the accompanying text is in Finnish.
	The WMO Ozone and UV Data Center operated by the Canadian government has ozone data from over 300 stations and UV data from over 20 stations.
	The WMO Ozone Mapping Center offers maps of Northern Hemisphere total column ozone from November 1 through March 31 every year based on 90 surface monitoring stations.
	Most recent weekly plot of Canada showing total column ozone relative to expected levels.
	The Laboratory for Atmospheric Physics' Network for Ozone and Solar Ultraviolet Radiation
	Meteorological Observations made by AWI including Near Real-time ozone soundings from Antarctica.
	Ozone data from Antarctica including Halley, Rothera and Vernadsky/Faraday
Satellite
	The Global Ozone Monitoring Experiment has been monitoring ozone since April 21, 1995 with high spatial resolution.
	NASA offers data and images from Earth Probe TOMS (July 25, 1996 to the present).
	NASA offers data and images from ADEOS TOMS (September 11, 1996 -June 29, 1997).
	Summary and information on data access for the European Arctic Stratospheric Ozone Experiment held in 1991-1992.
	NOAA's Climate Prediction Center has a number of stratospheric data products including TOVS and SBUV-2 images and temperature data.
	NASA offers data and plots from each of their TOMS instruments. Data include ozone, UV estimates and reflectivity.
	Information and data from NOAA's Advanced TIROS Operational Vertical Sounder (ATOVS) allows one to request plots of ozone at different pressure levels.
	Revised TIROS Operational Vertical Sounder (RTOVS) offers access to a variety of temperature and cloud data.

External pages are subject to their own privacy and security policies. The WMO, CIRES and/or the University of Colorado has no control over the contents of external web pages. Inclusion of web sites is not an endorsement of any particular product, company, information provider, or the content of the referenced sites. If you know of additional web sites which should be included on this page, please email the appropriate information to either: E. C. Weatherhead or Gregory Noonan.
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