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Current State of the Ozone Layer

This page provides sources of information on subjects that include the impact of human activities on ozone depletion and measurement of these impacts. Scientists are constantly measuring ozone depletion around the world to assess human impacts and our progress in phasing out the use of ozone-depleting chemicals to restore the ozone layer. This page provides sources of information on subjects that include the impact of human activities on ozone depletion, the rate of the ozone layer’s recovery, and the Antarctic Ozone Hole:

Scientific Assessment of Ozone Depletion: 2010
This is the most recent World Meteorological Organization and United Nations Environmental Programme assessment. It contains the most up-to-date understanding of ozone depletion and reflects the thinking of over 312 international scientific experts who contributed to its preparation and review.
Environmental Effects of Ozone Depletion and its Interactions with Climate Change: 2010 Assessment (PDF, 328 pp, 10 MB) Exit EPA Disclaimer.
Available from the United Nations Environmental Programme, this report by the Environmental Effects Assessment Panel highlights the latest data and research into environmental effects of ozone depletion and its interactions with climate change. Related to this report is the document, Questions and Answers about the Environmental Effects of the Ozone Layer Depletion and Climate Change: 2010 Update (PDF, 50 pp, 2.5 MB) Exit EPA Disclaimer.
Environmental Indicators: Ozone Depletion
Describes the data that characterize the ozone layer and demonstrate that CFCs and other chemicals are causing ozone depletion. Many internal links allow more in-depth reading.
Current Progress of the Antarctic Ozone Hole
View a page from NOAA Climate Prediction Center's web site, which shows weekly updates of the hole.
EPA's Ultraviolet Monitoring Program
EPA operates and maintains a network of Brewer spectrophotometers throughout the United States, measuring full-sky spectrally-resolved solar radiation in the UV-B and UV-A bands. Visitors can create graphs of daily UV and ozone levels and download the data.
NASA Ozone Hole Watch
Satellite instruments monitor the ozone layer. Images, data and information updated daily.
NOAA Climate Prediction Center Products: Stratosphere
Current satellite ozone maps; UV index bulletin; TOVS data, images
NOAA Stratospheric Ozone Monitoring and Research
Includes data, measurements, and frequently asked questions from NOAA.
NOAA Satellite and Information Service
Contains live data from satellites that monitor stratospheric ozone and UV radiation.
World Meteorological Organization (WMO) Global Atmosphere Watch Exit EPA Disclaimer
Includes information about WMO's atmospheric monitoring and research.

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