1. NOAA Stratospheric Ozone Webpage Provides a comprehensive technical primer on the ozone layer and its depletion, as well as access Category Science Environment Global Change ozone layer......In the stratosphere, the region of the Earth's atmosphere from 6 to 30 miles (10to 50 kilometers) above the surface, the chemical compound ozone plays a vital http://www.ozonelayer.noaa.gov/

In the stratosphere, the region of the Earth's atmosphere from 6 to 30 miles (10 to 50 kilometers) above the surface, the chemical compound ozone plays a vital role in absorbing harmful ultraviolet radiation from the sun. During the past 20 years, concentrations of this important compound have been threatened by human-made gases released into the atmosphere, including those known as CFCs. These chemical compounds as well as meteorological conditions in the stratosphere affect the concentration of stratospheric ozone. These pages have been created through a collaborative effort involving the following NOAA organizations: http://www.ozonelayer.noaa.gov/index.htm Last modified on 24 April 2001 by Karin.L.Gleason@noaa.gov

2. U.S. EPA: Ozone Depletion Home Information about the science of ozone depletion, regulations in the US designed to protect the ozone Category Regional North America Office of Air and Radiation...... information about the science of ozone depletion, information about the regulatoryapproach to protecting the ozone layer, and information on alternatives to http://www.epa.gov/ozone/

Ozone Depletion Recent Additions Contact Us Print Version Search: EPA Home Ozone Depletion Glossary About Us Chemicals Resource Center ... Fun Stuff Methyl Bromide Critical Use Exemption: New Information Methyl Bromide Critical Use Exemption Letter to Stakeholders (PDF, 14K) Methyl Bromide Critical Use Exemption Press Release (PDF, 137K) 2003 U.S. Nomination for the Methyl Bromide Critical Use Exemption Executive Summary (PDF, 200K) HCFC Allowance Allocation Final Rule (January 21, 2003; 68 FR 2819) HTML Format Adobe Acrobat (PDF) Format (285K) Welcome to EPA's ozone depletion web area! Within this area you'll find information about the science of ozone depletion, information about the regulatory approach to protecting the ozone layer, and information on alternatives to ozone-depleting substances , as well as information on a number of other topics.

3. U.S. EPA: Ozone Depletion Science Indicators Ozone Depletion Describes the data that characterize the ozone layerand demonstrate that CFCs and other chemicals are causing ozone depletion. http://www.epa.gov/ozone/science/science.html

Ozone Depletion Recent Additions Contact Us Print Version Search: EPA Home Ozone Depletion Glossary About Us ... Fun Stuff The Science of Ozone Depletion Ozone depletion is the result of a complex set of circumstances and chemistry. This page has links to articles that give overviews or broad information , shorter pieces that focus on specific aspects of ozone depletion international organizations that issue regular updates, and images and animations of ozone levels and ozone depletion. Please note that this site is intended only to provide general information about the science of ozone depletion. Therefore, it is written without detailed citations of original research. If you need such references, please see either the answers to frequently asked questions , by Robert Parson, or NASA's Ozone Resource File , both of which provide detailed information and full citations to original papers. You can also find many original papers at the

4. Ozone Layer THE CHEMISTRY OF THE ozone layer. WHAT IS OZONE AND HOW IS IT IMPORTANT IN THE ATMOSPHERE http://www.chem.wm.edu/chemWWW/courses/chem105/projects/group2/page1.html

THE CHEMISTRY OF THE OZONE LAYER WHAT IS OZONE AND HOW IS IT IMPORTANT IN THE ATMOSPHERE HOW OZONE DEPLETION OCCURS WITHIN THE ATMOSPHERE THE TWO VIEWS OF THE OZONE ISSUE THE REALITY OF OZONE DEPLETION AND THE HARMFUL EFFECTS OF IT THERE IS NO OZONE PROBLEM TO WORRY ABOUT WHAT SOCIETY AND INDIVIDUALS CAN DO TO STOP DESTRUCTION OF THE OZONE LAYER Anna Gasiorski, Michelle Pecori, Elcenora Martinez Timothy Csontos, Terrence Moran Next Page

5. The Ozone Layer Biweekly bulletins report on the state of the ozone layer in the Antarctic region. Presented by the World Meteorological Organization. the Antarctic ozone layer over the last twenty years http://www.soton.ac.uk/~engenvir/environment/air/oz_intro.htm

The Ozone Layer The ozone layer is part of the atmosphere of the Earth. Like most natural things it depends on a healthy balance of chemicals so that it can maintain the protection from the sun which it has always given before. Unfortunately the balance of the ozone layer has been upset by man-made chemicals called CFCs that are robbing the atmosphere of ozone gas which makes up the ozone. This page was produced by Maxwell Taylor for the Database for Use in Schools project. All views expressed in this page and all others for this project are the views of the author and not necessarily that of Southampton University. Last update 21/1/97

6. Handbook For The International Treaties For The Protection Of The Ozone Layer (5 Includes the Montreal Protocol, which sets the elimination of ozonedepleting substances as its final objective, and follow-on agreements. http://www.unep.org/ozone/Handbook2000.shtml

Français Español English Nairobi, Sunday March 23 2003 About The Secretariat Ozone Treaties Status of Ratification Reports and Documents ... Contact Addresses Handbook for the International Treaties for the Protection of the Ozone Layer (5th Edition) Zipped Version of the Handbook A C E ... PDF Format of the Handbook A C E F R S Word Version of the Handbook E F ... Contact Webmaster - OzoneInfo@unep.org

7. Research Into Stratospheric Ozone - THESEO LINKS THESEO is taking place during 1998 and 1999. The main aim is to improve our understanding of the causes of ozone depletion over Europe and other midlatitude regions, where the ozone layer has been progressively depleted for the last 20-30 years. http://europa.eu.int/comm/research/envsc/theseo.html

IMPORTANT LEGAL NOTICE - The information on this site is subject to a and a Research into stratospheric Ozone - THESEO LINKS This page intends to be a pointer between ongoing projects on atmospheric research of the of the European Union and related general information THESEO , the T hird E uropean S tratospheric E xperiment on O zone, is the European response to understand ozone depletion over Europe. H igh quality data and appropriate project management are not only important in the project life cycle but ultimately facilitate dissemination and project results. S ee the atmospheric database supported by the CASSIS/THESEO project: NADIR Data Centre General information on the Commission The EUROPA home page of the European Commission gives you general information on the European Union. The RESEARCH HOME PAGE gives you more specific infomation on Research and the Research Directorate General of the European Commission. The CORDIS Home Page THESEO - Projects THESEO Summary Executive Research Plan THESEO poster (PDF-file): theseo.pdf

8. The Ozone Hole Tour : Home Page An overview of the ozone layer and the development of the ozone hole over the Antarctic hosted by Category Science Environment Global Change ozone layer......Notes for teachers Visited over 3500 times a week! Awards andcitations for the Ozone Hole Tour fr français de deutsch. http://www.atm.ch.cam.ac.uk/tour/

Centre for Atmospheric Science Notes for teachers Visited over 3500 times a week! Awards and citations for the Ozone Hole Tour deutsch Before You Start! I: The Discovery of the Ozone Hole II: Recent Ozone Loss over Antarctica III: The Science of the Ozone Hole IV: Latest Ozone Hole Research at Cambridge Glossary Credits More Info ... Centre for Atmospheric Science , Cambridge University, UK. No text or graphics can be used or reproduced without explicit written permission. This version designed and maintained by Dr. Glenn Carver . Original concept and design Owen Garrett. French translation by , German translation by Dr. Olaf Morgenstern

9. STOCKHOLM ENVIRONMENT INSTITUTE (SEI) - Homepage Independent, international research institute specialising in sustainable development and environment issues at local, national, regional and global policy levels. Aims to clarify the requirements, strategies and policies for a transition to sustainability. These goals are linked to the principles advocated in Agenda 21 and the Conventions such as Climate Change, ozone layer Protection and Biological Diversity. http://www.sei.se/

LATEST New publication: World Transport Policy and Practice Call for Tenders: Ozone Depletion Substances in the Philippines Vacancy: Director Asia Office Course: Event: SEI at Kyoto - Ecosan Sessions (pdf) SEI-Oxford: SEI-HQ Address Lilla Nygatan, 1 Box 2142, S-103 14 Stockholm, Sweden Tel Fax E-Mail: postmaster@sei.se Executive Director: Roger Kasperson On the SEI Website: About SEI News Milestones Board Factsheets Courses SEI Centres - Boston - Stockholm - Tallinn - York SEI Oxford Office Staff PROGRAMMES Atmos.Environment Sus. Development Water Resources Publications - List - Search - Downloads - RED Newsletter SEI Library SEI Jobs - Job Sites Sitemap Contact SEARCH ABOUT SEI BOARD STAFF CENTRES ... PUBLICATIONS SEI bridges science and policy in the field of environment and development at local, national, regional and global scales. SEI Research Areas Atmospheric Pollution Strategies Ozone Layer Protection Sustainable Energy Water Assessment and Planning ... Contact Us THE EARTHSCAN READER ON WORLD TRANSPORT POLICY AND PRACTICE editors John Whitelegg and Gary Haq further information/order a copy "This Reader contains 16 important contributions on how to improve transport globally. They are based on sound science, sound people-centred analysis, and a strong awareness of equity and human rights. And they have been selected for their originality, the importance of the issues they focus on, the quality of their insight and their practical relevance. A further 7 commissioned chapters provide informative overviews of the transport problems specific to each region of the world, while the editors’ Introduction and Conclusion frames the discussion and lays out the scale of the challenges we face."

10. The Ozone Hole Tour : Part I. The History Of The Ozone Hole. It was anticipated that these limitations would lead to a recovery of the ozone layerwithin 50 years of 2000; the World Meteorological Organisation estimated http://www.atm.ch.cam.ac.uk/tour/part1.html

Centre for Atmospheric Science Tour Home Page Part I ... Part IV Part I: The History behind the Ozone Hole The Beginning ... Dramatic loss of ozone in the lower stratosphere over Antarctica was first noticed in the 1970s by a research group from the British Antarctic Survey (BAS) who were monitoring the atmosphere above Antarctica from a research station much like the picture to the right. The Halley Research Station - Information BAS research stations in the Antarctic Folklore has it that when the first measurements were taken in 1985, the drop in ozone levels in the stratosphere was so dramatic that at first the scientists thought their instruments were faulty. Replacement instruments were built and flown out, and it wasn't until they confirmed the earlier measurements, several months later, that the ozone depletion observed was accepted as genuine. Another story goes that the TOMS satellite data didn't show the dramatic loss of ozone because the software processing the raw ozone data from the satellite was programmed to treat very low values of ozone as bad readings! Later analysis of the raw data when the results from the British Antarctic Survey team were published, confirmed their results and showed that the loss was rapid and large-scale; over most of the Antarctica continent. What Is Ozone And How Is It Formed?

11. Miljøstatus Norge 1995 Climate change, ozone layer depletion, and acidification. http://www.grida.no/soeno95/

Velkommen til Miljøstatus Norge Sist oppdatert 27. mai 1996 I want to read in English Nominert til: UNEP/GRID-Arendal Klimaendringer Utslipp Klima ... Flere lenker Vennligst send kommentarer og forslag til webmaster For mere informasjon: GRID-Arendal, Longum Park, PO Box 1602, Myrene, 4801, Arendal. Telefon: 37 03 56 50 Telefaks: 37 03 50 50

12. Environmental Problems And Sustainability Provides directory of environmental site concerning sustainability, greenhouse effect, ozone layer depletion, chemical and nuclear pollution. http://it.geocities.com/allfonsit/

Per i visitatori italiani : E nvironmental problems and sustainability M.J.Heade, Cattelya Orchid and Three Brasilian Hummingbirds, 1871, National Gallery of Art, Washington, D.C. Sustainability Nuclear Greenhouse effect Ozone depletion ... High altitude pollution POPs condense on snowcaps UNEP : new guidelines will reduce hazards posed by plastics wastes Selected Web Sites : Environmental organizations : Greenpeace , probably the most active organization WWF Friends of the Earth UN, national or governmental organizations: UNEP, United National Environmental Program US Environment Protection Agency National Oceanic and Atmospheric Administration, USA E-mail : allfonsit@yahoo.it Edited by : Alfonso Iacono, Italy February 2002 Note : The image (painting by M. J. Heade ) has been downloaded from the web site CGFA , by Carol Gerten-Jackson

13. Ozone Depletion-Key Text Earth's sunscreen the ozone layer The ozone layer screens out the suns harmful ultraviolet radiation. Can we reverse its destruction? http://www.science.org.au/nova/004/004key.htm

Key text Published by Australian Academy of Science Sponsored by The ozone layer screens out the sun’s harmful ultraviolet radiation. Can we reverse its destruction? You will get more from this topic if you have mastered the basics of electromagnetic radiation Printer-friendly version of complete topic A natural balance keeps us well supplied with ozone Up in the stratosphere , small amounts of ozone are constantly being made by the action of sunlight on oxygen. At the same time, ozone is being broken down by natural processes. The total amount of ozone usually stays constant because its formation and destruction occur at about the same rate. Human activity has recently changed that natural balance. Certain manufactured substances (such as chlorofluorocarbons and hydrochlorofluorocarbons ) can destroy stratospheric ozone much faster than it is formed. Ozone is a natural sunblock Go outside on a fine day and feel the sun warm your face. What happens when a cloud passes over? You’ll notice that the cloud takes away some of the heat and light coming from the sun. In much the same way that a cloud blocks the heat on a hot day, the ozone layer in the stratosphere blocks out the sun’s deadly ultraviolet rays. It acts as our planet’s natural sunblock.

14. Science - Ozone Basics The ozone in this region is commonly known as the ozone layer. What human activitiesaffect upperatmospheric ozone (the stratospheric ozone layer)? http://www.ozonelayer.noaa.gov/science/basics.htm

Science: Ozone Basics Ozone is very rare in our atmosphere, averaging about three molecules of ozone for every 10 million air molecules. In spite of this small amount, ozone plays a vital role in the atmosphere. In the information below, we present "the basics" about this important component of the Earth's atmosphere. Click here for larger image Where is ozone found in the atmosphere? Ozone is mainly found in two regions of the Earth's atmosphere. Most ozone (about 90%) resides in a layer that begins between 6 and 10 miles (10 and 17 kilometers) above the Earth's surface and extends up to about 30 miles (50 kilometers). This region of the atmosphere is called the stratosphere. The ozone in this region is commonly known as the ozone layer. The remaining ozone is in the lower region of the atmosphere, which is commonly called the troposphere. The figure (above) shows an example of how ozone is distributed in the atmosphere. What roles does ozone play in the atmosphere and how are humans affected?

15. Stratospheric Ozone: We Have Reorganized Our Information. This Environment Canada site deals with issues, programs and other aspects having to do with stratospheri Category Science Environment Global Change ozone layer...... http://www.ec.gc.ca/ozone/indexe.htm

We have reorganized our information. Please refer to our new site: " Stratospheric Ozone " ( www.ec.gc.ca/ozone and update your bookmarks.

16. The NOAA Aeronomy Laboratory Conducting research on the chemical and dynamic processes of the Earth's atmosphere, the Aeronomy Laboratory seeks to provide a sound scientific basis for decisions made in industry and government related to ozone layer protection, air quality improvement, and climate change. http://www.al.noaa.gov

The NOAA Aeronomy Laboratory Advancing Our Understanding of the Earth's Atmosphere Who We Are The Aeronomy Laboratory (AL) is one of the twelve Laboratories in the Office of Oceanic and Atmospheric Research (OAR) of the National Oceanic and Atmospheric Administration (NOAA). The Laboratories of OAR are located in several states, from the East Coast to the West Coast. The research areas of the individual Laboratories focus on particular aspects of the Earth system and on different research approaches, with the common broad aim of improving the understanding and prediction of geophysical phenomena that relate to the well-being of humankind. Our Mission The ultimate aim of the Aeronomy Lab's research is: to improve the capability to observe, understand, predict, and protect the quality of the atmosphere. The Aeronomy Laboratory conducts fundamental research on the chemical and physical processes of the Earth's atmosphere. This research concentrates on the lower two layers of the atmosphere, known as the troposphere and stratosphere (see figure below). Both the stratosphere and the troposphere have important direct and indirect effects on the well-being of humankind. In this century, it has become increasingly clear that humans are influencing the chemical composition of the troposphere and stratosphere in ways that can impact conditions at the Earth's surface. Some of the most challenging environmental issues of our time have arisen. At the Aeronomy Lab, over 120 scientists, engineers, students, and supporting staff are engaged in studies of these issues, working with colleagues from other institutions across the United States and around the world.

17. National Institute For Environmental Studies (Independent Administrative Institu Research includes global warming, ozone layer depletion, pollution, treatment and recycling of waste, and the conservation of biodiversity. http://www.nies.go.jp/

HELP Enter words or phrases, separated by spaces. "NIES Annual Report 2002" new "GIO adds GHG emissions data of Annex I countries on Emissions Data" new "Polar Vortex Forecasts" new "Greenhouse Gas Inventory Office of Japan (GIO)" new ... Ministry of the Environment Special Priority Research Projects Research Divisions Research Centers, etc. Climate Change Ozone Layer Endocrine Disruptors and Dioxin Biodiversity Conservation ... Laboratory of Intellectual Fundamentals for Environmental Studies For further inquiry, please send an e-mail to : www@nies.go.jp National Institute for Environmental Studies 16-2 Onogawa, Tsukuba-Shi, Ibaraki, 305-8506 Japan www@nies.go.jp

18. The Science Of Ozone Depletion Union of Concerned Scientists primer on the ozone layer, its importance, the effects of humanproduced chemicals, and prospects for the future. http://www.ucsusa.org/global_environment/connections/page.cfm?pageID=551

19. Press Releases - October 2001 - Threats To Ozone Layer Persist As Governments Se Threats to ozone layer persist as governments seek tighter controls Recognizing theneed to eliminate any remaining weaknesses in the international regime for http://www.unep.org/Documents/Default.asp?DocumentID=219&ArticleID=2939

20. Climate Monitoring And Diagnostics Laboratory Conducts research related to atmospheric constituents that are capable of forcing change in the climate of the earth or that may deplete the ozone layer. CMDL monitors greenhouse gases, aerosols, ozone, ozonedepleting gases and solar and terrestrial radiation at global sites including four Baseline Observatories. http://www.cmdl.noaa.gov

Home About CMDL Data Publications ... Contact Us Baseline Observatories South Pole, Antarctica American Samoa Mauna Loa, Hawaii Trinidad Head, California Barrow, Alaska Search CMDL: What forces determine the Earth's climate ? What destroys the ozone layer? What will happen to air quality five research groups have been conducting sustained measurements for research related to climate, the ozone layer, and air quality at global Baseline Observatories and other locations for over 40 years in search of the answers which are needed to project the environmental future of this planet. [What does this figure represent? Invitation to the 2003 CMDL Annual Meeting CMDL FY2002 4th Quarter Milestones CMDL Biennial Report #26: 2000-2001 ... CMDL Operating Plan: 2002-2006 CMDL Research Groups Aerosols Radiation AERA Carbon Cycle Greenhouse Gases (CCGG) ... Contact Us 325 Broadway R/CMDL Boulder, CO 80305

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