for 15 February - 10 March 2007:
The science of ozone depletion
Coordinator for this session: Rajendra
to your questions, please scroll down.
How can we protect our ozone layer, ourself?
Indeed, individuals can contribute to protect the ozone layer.
All the great efforts of the world community have already contributed
to setting the ozone layer on the path of recovery. But full recovery
is expected by 2050 - 2060. Hence every action by individuals as
listed below will count.
For more information visit this webpage - http://www.unep.fr/ozonaction/events/ozoneday/1999.htm
under the OzonAction website and click on the first item, 'What
you can do to protect the ozone layer'.
What is the CFC (CFCs listed in the Annex A to the Montreal
Protocol) phase out schedule applied for A5 parties?
CFCs as listed in Annex A of the Montreal Protocol have the following
phase out schedule for Article 5 countries:
From 1 July 1999, freeze in production and consumption at 1995-1997
From 1 January 2005, 50% reduction in production and consumption
at 1995-1997 levels.
From 1 January 2007, 85% reduction in production and consumption
at 1995-1997 levels.
From 1 January 2010, 100% reduction in production and consumption
at 1995-1997 levels.
The sun is?
Your question is incomplete. You may like to complete it so that
I could respond.
What is the HCFC phase out schedule applied for A5 countries?
HCFC phase out schedule as applied for Article 5 countries is:
1 January 2016 freeze of consumption at baseline of 2015 average
1 January 2040, 100% phase out at base line of 2015 average level
Who is Ozzy ozone? Who are the Nobel Prize winners for research
on the ozone layer? Who discovered the Antarctic Ozone hole? How
is the CFC consumption calculated?
Ozzy Ozone is a character created to provide messages about the
ozone layer protection and also how to protect ourselves from UV
rays. For more information please visit the children's web-page
The Nobel Prize winners for research on ozone layer are Prof Paul
Crutzen, Prof Mario Molina and Prof F. Sherwood Rowland.
The Antarctic ozone hole was discovered by Joe Farman from the
British Antarctic Survey.
CFC consumption is calculated as import plus production minus exports.
What can an every day kid do to protect the ozone layer?
You can be an Ozone-friendly child: Tell your family and friends
how important it is to protect the ozone layer.
Here are some simple actions you can do yourself with the support
of your parents to reduce ozone layer depletion:
Plant a tree once a year: Trees absorb much carbon dioxide
as they grow, therefore by your action you will be helping the earth.
Recycle at home: Design a recycling system at home so you
can classify the wastes and recycle materials such as paper and
Avoid the use of ODS: Avoid the use of sprays containing
chlorofluorocarbons (CFCs) which cause ozone depletion. Check with
your parents the labels of products you buy to make sure they are
Replace the light bulbs in your home with energy saving light
bulbs: This simple action will save a lot of energy and emission
of carbon dioxide.
And to help children understand ozone layer protection, we have
produced two cartoon
booklets a website
and an Ozzy
Ozone video. We hope you enjoy these.
What is the concept of the ozone hole?
Due to man-made emissions of certain ozone depleting chemicals
(like chlorofluorocarbons - CFCs), the stratospheric ozone layer
gets depleted. Such gases, being chemically stable, travel high
up in the atmosphere and reach up to the stratosphere (15 to 45
kms above the earth's surface) and get decomposed there. The chlorine
or bromine radicals disassociated from such substances subsequently
decompose the ozone layer.
Severe depletion of the ozone layer is termed as the 'ozone hole.'
Such severe depletion occurs over the Antarctic region.
What are the properties of ozone depleting substances?
The ozone depleting substances are certain saturated halogenated
(chlorinated and brominated) carbon-chemicals. Examples are carbon
tetrachloride, chlorofluorocarbons and halons. These chemicals are
chemically stable, odourless and colourless. They are gases or liquids
at room temperature.
Who is Ozzy Ozone?
Ozzy Ozone is a ozone molecule O3 who is protecting us from the
stratosphere (15 km high). He forms with his friends the earth's
protective shield, the ozone layer. If you want to see this unique
character, please visit the following website http://www.unep.fr/ozonaction/topics/children.htm
or Ozzy's own website
www.ozzyozone.org. You will find Ozzy Ozone cartoon booklets,
an Ozzy Ozone video, TV spots, radio spots and education pack. If
you want to discuss with him, send a message to firstname.lastname@example.org.
Ozzy has been used in many countries to help raise awareness particularly
to children. Ozzy Ozone cartoon character is a registered trademark
of the Government of Barbados.
Can you tell me who's who in the field of ozone layer protection?
1. Protecting the Ozone Layer: The United Nations History
available from Earthscan at www.earthscan.co.uk, www.amazon.com.
2. Ozone Connections Expert Networks in Global Environmental
Governance, by Penelope Canan and Nancy Reichman available from
3. The Technology and Economic Assessment Panel (TEAP):
provides the names, affiliations and countries of all current officials
of the TEAP, the Technical Options Committees and 2004 Task Forces
as contained in the TEAP Progress Report (May 2006) and updated
as of 17 January 2007.
4. The United Nations Environment Programme Awards http://ozone.unep.org/Events/awards2005_profiles.shtml
Ozone Awards have been introduced in 1995 on the occasion of
the Tenth Anniversary of the Vienna Convention for the Protection
of the Ozone Layer; in 1997 on the occasion of the Tenth Anniversary
celebrations of the signing of the Montreal Protocol; and in 2005
on the occasion of the 20th Anniversary of the Vienna Convention
for the Protection of the Ozone Layer and on the occasion of the
Joint 7th Meeting of the Conference of the Parties to the Vienna
Convention and the 17th Meeting of the Parties to the Montreal Protocol.
Ozone Awards recognize the outstanding achievements of individuals
in areas related to protecting the Earth's ozone layer. The awards
acknowledge the value of scientific contributions in advancing the
understanding of the causes of ozone depletion and for providing
a sound basis for international action; they acknowledge efforts
to use technology as a possible source of viable alternatives to
ozone-depleting substances; they recognize contributions in areas
of policy and implementation and in areas related to NGO efforts
in raising awareness, engaging the public, and catalyzing solutions.
5. The US EPA Stratospheric Ozone Protection Awards: http://earth1.epa.gov/ozone/awards/index.html
In 1990, EPA established the Stratospheric Ozone Protection Awards
to recognize exceptional leadership, personal dedication, and technical
achievements in protecting the Earths stratospheric ozone
layer. In the first eighteen years, The Stratospheric Ozone Protection
Award has been presented to 509 individuals, organizations and teams
from 42 countries. In 2007, 14 individuals, organizations, associations
and teams earned the award through originality and public purpose,
moral and persuasive leadership, and elimination of emissions of