Trends in Emissions of Ozone-Depleting Substances, Ozone Layer Recovery, and Implications for Ultraviolet Radiation Exposure

One of 31 books in the series: Synthesis and Assessment Product available on this site.

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Description

This Synthesis and Assessment Product (SAP 2.4) focuses on the Climate models. Depletion of the stratospheric ozone layer by human-produced ozone-depleting substances has been recognized as a global environmental issue for more than three decades, and the international effort to address the issue via the United Nations Montreal Protocol marked its 20-year anniversary in 2007. Scientific understanding underpinned the Protocol at its inception and ever since. As scientific knowledge advanced and evolved, the Protocol evolved through amendment and adjustment. Policy-relevant science has documented the rise, and now the beginning decline, of the atmospheric abundances of many ozone-depleting substances in response ... continued below

Physical Description

233 p. : col. ill.

Creation Information

US Climate Change Science Program and the Subcommittee on Global Change Research. November 2008.

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This book is part of the collection entitled: Environmental Policy Collection and was provided by UNT Libraries to Digital Library, a digital repository hosted by the UNT Libraries. It has been viewed 801 times , with 8 in the last month . More information about this book can be viewed below.

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  • Main Title: Trends in Emissions of Ozone-Depleting Substances, Ozone Layer Recovery, and Implications for Ultraviolet Radiation Exposure
  • Added Title: U.S. Climate Change Science Program Synthesis and Assessment Product 2.4, November 2008
  • Series Title: Synthesis and Assessment Product

Description

This Synthesis and Assessment Product (SAP 2.4) focuses on the Climate models. Depletion of the stratospheric ozone layer by human-produced ozone-depleting substances has been recognized as a global environmental issue for more than three decades, and the international effort to address the issue via the United Nations Montreal Protocol marked its 20-year anniversary in 2007. Scientific understanding underpinned the Protocol at its inception and ever since. As scientific knowledge advanced and evolved, the Protocol evolved through amendment and adjustment. Policy-relevant science has documented the rise, and now the beginning decline, of the atmospheric abundances of many ozone-depleting substances in response to actions taken by the nations of the world. Projections are for a return of ozone-depleting chemicals (compounds containing chlorine and bromine) to their "pre-ozone-depletion" (pre-1980) levels by the middle of this century for the midlatitudes; the polar regions are expected to follow suit within 20 years after that. Since the 1980s, global ozone sustained a depletion of about 5 percent in the midlatitudes of both the Northern Hemisphere and Southern Hemisphere, where most of the Earth's population resides; it is now showing signs of turning the corner towards increasing ozone. The large seasonal depletions in the polar regions are likely to continue over the next decade but are expected to subside over the next few decades.

Physical Description

233 p. : col. ill.

Notes

This Synthesis and Assessment Product, described in the U.S. Climate Change Science Program (CCSP) Strategic Plan, was prepared in accordance with Section 515 of the Treasury and General Government Appropriations Act for Fiscal Year 2001 (Public Law 106-554) and the information quality act guidelines issued by the Department of Commerce and NOAA pursuant to Section 515 <http://www.noaanews.noaa.gov/stories/iq.htm>.

[harvested: 2009-08-09]

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  • : http://downloads.climatescience.gov/sap/sap2-4/sap2-4-final-all.pdf
  • Archival Resource Key: ark:/67531/metadc12023

Collections

This book is part of the following collection of related materials.

Environmental Policy Collection

The Environmental Policy Collection contains reports, policy documents, and media selected from local, statewide, national, and international organizations; government and private agencies; and scientific and research institutions. The collection also contains theses and dissertations relevant to environmental policy.

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Creation Date

  • November 2008

Added to The UNT Digital Library

  • March 16, 2010, 3:46 p.m.

Description Last Updated

  • Oct. 6, 2010, 5:57 p.m.

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Citations, Rights, Re-Use

US Climate Change Science Program and the Subcommittee on Global Change Research. Trends in Emissions of Ozone-Depleting Substances, Ozone Layer Recovery, and Implications for Ultraviolet Radiation Exposure, book, November 2008; Washington, DC. (digital.library.unt.edu/ark:/67531/metadc12023/: accessed November 17, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; .