Science Bulletins: Ozone's Slow Recovery

Every September and October, a "hole" of varying size emerges in Earth's ozone layer over Antarctica, an effect of a buildup of ozone-depleting human-made chemicals high in the atmosphere. Now that levels of these chemicals are declining as a result of international agreements put in place decades ago, scientists predict that the annual ozone hole is poised to begin a shrinking trend. For background information, educational resources, and more, visit Ozone's Slow Recovery on the Science Bulletins website: www.amnh.org/amnh2/explore/science-bulletins/earth… RELATED LINKS 2013 ozone hole information NOAA: Encouraging information from this year's observations of the Antarctic ozone hole www.esrl.noaa.gov/csd/assessments/ozone/2010/twent… General ozone information NOAA Earth Systems Research Laboratory: Twenty Questions and Answers About the Ozone Layer www.esrl.noaa.gov/csd/assessments/ozone/2010/twent… UNEP Ozone Secretariat ozone.unep.org/new_site/en/index.php Estimating When the Antarctic Ozone Hole will Recover (Paul A. Newman and colleagues) lasp.colorado.edu/sorce/news/2008ScienceMeeting/do… NASA Ozone Hole Watch ozonewatch.gsfc.nasa.gov/ NASA Earth Observatory: Ozone earthobservatory.nasa.gov/Features/Ozone/ Data sources NOAA Total Ozone Analysis using SBUV/2 and TOVS (TOAST) www.ospo.noaa.gov/Products/atmosphere/toast/index.… NASA Total Ozone Mapping Spectrometer (Nimbus-7 satellite) ozoneaq.gsfc.nasa.gov/n7sat.md Collaborators NOAA Environmental Visualization Laboratory www.nnvl.noaa.gov/

• #science_technology
• #ozone
• #ozone_hole
• #ozone_layer