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Quel est l’état de la couche d’ozone?: Le point sur l’évaluation la plus récente eff ectuée par l’OMM/PNUE
Bulletin, Vol. 64(1). OMM, 2016L’évaluation de l’état de la couche d’ozone réalisée en 2014, la plus récente en date, établit des prévisions concernant le retour aux valeurs d’avant 1980. Sous les latitudes moyennes de l’hémisphère Nord (35-60°N), la concentration d’ozone total est aujourd’hui inférieure d’environ 3,5 % à ce qu’elle était pendant la période 1964-1980. Sous les latitudes moyennes de l’hémisphère Sud (35-60°S), elle est inférieure de 6 % environ. La déperdition plus importante observée dans l’hémisphère Sud est liée au trou qui se forme dans la couche d’ozone au-dessus de l’Antarctique. Après la baisse du tau ...
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Is the Ozone Layer on the Mend? Highlights from the most recent WMO/UNEP Ozone Assessment
Bulletin, Vol. 64(1). WMO, 2015The 2014 Ozone Assessment provides the latest update of the current state of the ozone layer and makes predictions on when the ozone layer will return to 1980 values. In the northern middle latitudes (35-60°N), total ozone is now about 3.5% less than it was in the period from 1964-1980. At southern middle latitudes (35-60°S), it is about 6% less. The larger depletion in the Southern Hemisphere is linked to the Antarctic ozone hole. Following the decline in total ozone during the 1980s and 1990s, the situation has stabilized since 2000. Hidden under the inter-annual variability, there are indic ...
GORMP, 54. Report of the Ninth Meeting of the Ozone Research Managers of the Parties to the Vienna Convention for the Protection of the Ozone Layer
WMO, 2014
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Evidence for the effectiveness of the Montreal Protocol to protect the ozone layer
Atmospheric Chemistry and Physics (ACP), Vol. 10. N° 24. Mäder J.A.; Staehelin Johannes; Peter T.; et al. - Copernicus GmbH, 2011The release of man-made ozone depleting substances (ODS, including chlorofluorocarbons and halons) into the atmosphere has led to a near-linear increase in stratospheric halogen loading since the early 1970s, which levelled off after the mid-1990s and then started to decline, in response to the ban of many ODS by the Montreal Protocol (1987). We developed a multiple linear regression model to test whether this already had a measurable effect on total ozone values observed by the global network of ground-based instruments. The model includes explanatory variables describing the influence of var ...
GORMP, 53. Report of the Eighth Meeting of the Ozone Research Managers of the Parties to the Vienna Convention for the Protection of the Ozone Layer
WMO, 2011
GORMP, 51. Report of the Seventh Meeting of the Ozone Research Managers of the Parties to the Vienna Convention for the Protection of the Ozone Layer
WMO, 2008
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La science de l'ozone 2007 : une contribution canadienne au vingtième anniversaire du Protocole de Montréal
Environnement Canada, 2007Ozone Science 2007: A Canadian contribution to the twentieth anniversary of the Montreal Protocol provides an overview of the Montreal Protocol as a shining example of the power that science and international efforts can have in protecting the environment and changing our behaviour. It provides hope that our response to other serious challenges, such as global warming, will be equally successful. It also provides the lesson that sound science is absolutely necessary to guide the changes needed in societ to safeguard our future. The Protocol demonstrates that the economy, as well as individual ...
Ozone Science 2007 : a canadian contribution to the the twentieth anniversary of the Montreal Protocol
Environment Canada, 2007Ozone Science 2007: A Canadian contribution to the twentieth anniversary of the Montreal Protocol provides an overview of the Montreal Protocol as a shining example of the power that science and international efforts can have in protecting the environment and changing our behaviour. It provides hope that our response to other serious challenges, such as global warming, will be equally successful. It also provides the lesson that sound science is absolutely necessary to guide the changes needed in societ to safeguard our future. The Protocol demonstrates that the economy, as well as individual ...
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Handbook for the Montreal Protocol on substances that deplete the Ozone Layer - seventh edition
UNEP, 2006Since 1991 the publication of the Handbook for the Montreal Protocol on Substances that Deplete the Ozone Layer (1987) has proved to be an invaluable reference source for the decisions the Parties have made in the process of developing the ozone regime. The Handbook itself is published in response to the Parties’ decision (made in 1990) requesting the Secretariat to publish and update regularly a Handbook, setting out the Protocol, as adjusted and amended, together with the decisions of the Parties and other relevant material. Since then, the Protocol has been adjusted on six occasions and ame ...
Capacity building for ozone monitoring in developing countries
WMO, 2006Capacity building for ozone monitoring and research in developing countries and in countries with economies in transition comes from the general commitments anchored in the Vienna Convention. The Parties under the Vienna Convention established the Trust Fund for Research and Systematic Observations for funding activities consistent with the objectives of the Vienna Convention and the recommendations of the Ozone Research Managers’ Meetings. Those aims are also consistent with the Strategy for the Implementation of the Global Atmosphere Watch Programme (GAW) of the World Meteorological Organiza ...
IPCC/TEAP special report on safeguarding the ozone layer and the global climate system, issues related to hydrofluorocarbons and perfluorocarbons: summary for policymakers and technical summary
World Meteorological Organization (WMO) ; United Nations Environment Programme (UNEP); Intergovernmental Panel on Climate Change (IPCC) - IPCC, 2005
IPCC/TEAP special report on safeguarding the ozone layer and the global climate system : issues related to hydrofluorocarbons and perfluorocarbons
World Meteorological Organization (WMO) ; Intergovernmental Panel on Climate Change (IPCC); United Nations Environment Programme (UNEP) - IPCC, 2005'Prepared by Working Groups I and III of the Intergovernmental Panel on Climate Change, and the Technical and Economic Assessment Panel." "The volume includes a Summary for policymakers approved by governments represented in the IPCC, and a Technical summary"--Half-title.
Rapport spécial du GIEC et du GETE Préservation de la couche d’ozone et du système climatique planétaire, questions relatives aux hydrofluorocarbures et aux hydrocarbures perfluorés: résumé à l’intention des décideurs et résumé technique
Organisation météorologique mondiale (OMM); Programme des Nations Unies pour l'environnement (PNUE); Groupe d'Experts Intergouvernemental sur l'Evolution du Climat (GIEC) - GIEC, 2005
التقرير الخاص لفريق التقييم التكنولوجي الاقتصادي TEAP التابع للهيئة الحكومية الدولية المعنية بتغير المناخ (IPCC) والخاص بحماية طبقة الأوزون والنظام المناخي العالمي، القضايا المتعلقة بمركبات الهيدروكربون الفلورية والمواد الكربونية الفلورية المشبعة: ملخص لصانعي السياسات والملخص الفني
المنظمة العالمية للأرصاد ; برنامج الأمم المتحدة للبيئة ; الهيئة الحكومية الدولية المعنية بتغير المناخ - الهيئة الحكومية الدولية المعنية بتغير المناخ, 2005
Специальный доклад МГЭИК/ТЕАП Охрана озонового слоя и глобальной климатической системы, вопросы, связанные с гидрофторуглеродами и перфторуглеродами: резюме для лиц, определяющих политику, и техническое резюме
IPCC, 2005
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Montreal Protocol on substances that deplete the Ozone Layer. 2002 Report of the Halons Technical Options Committee (HTOC) : 2002 Assessment
UNEP, 2003This Report reveals efforts of the Halons Technical Options Committee (HTOC) to identify, develop and test alternatives that can used in place of the halons. Under the Montreal Protocol on Substances that Deplete The Ozone Layer, the use of halons is being phased out in industries such as: merchant shipping, oil and gas production, and in civil aviation, as well as in the military, for explosion suppression, and in countries with economies in transition. The report reveals the progress that has been made towards the objective of reducing the need for halons, and discusses some of the problems ...
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Montreal Protocol on Substances that deplete the Ozone Layer. 2002 Report of the Aerosols, Sterilants, Miscellaneous Uses and Carbon Tetrachloride Technical Options Committee (ATOC) : 2002 Assessment
UNEP, 2003In response to the scientific consensus that chlorofluorocarbons and halons deplete the ozone layer, the United Nations Environment Programme (UNEP) enacted the Montreal Protocol as the principal legal document to authorize the fight to reduce the production of substances that deplete the ozone layer. This document presents an assessment report compiled by the Sterilants, Miscellaneous Uses and Carbon Tetrachloride Technical Options Committee, and reveals the progress made in efforts to phase out the consumption of chlorofluorocarbons commonly used in aerosol sprays. It also puts forward recom ...
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Assessing the Impacts of Short-Lived Compounds on Stratospheric Ozone : Report to the United Nations Environment Programme from the Cochairs of the Montreal Protocol. Scientific Assessment Panel
UNEP, 2000
Action on ozone
UNEP, 2000It is one of UNEP’s proudest achievements to have led the international effort to protect the Earth’s ozone layer. The Montreal Protocol, which was negotiated under our aegis, has, rightly, been regarded as a model for other international environmental agreements.
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