Situation at 2003 August 27-
The ozone has grown rapidly and
now covers some 23 million square kilometres, larger than it has ever been at
this time in August. Very low ozone levels have been recorded over the
Antarctic Peninsula. Temperatures in the ozone layer are low enough that
Polar Stratospheric Clouds (PSCs) have formed widely over the continent.
Environment
Canada Southern
Hemisphere Ozone Map
http://exp-studies.tor.ec.gc.ca/cgi-bin/selectMap?lang=e
Situation at 2003
September 1--The
ozone has grown rapidly and now covers some 26 million square kilometres, larger
than it has ever been at this time in early September. Very low ozone
levels have been recorded over the Antarctic Peninsula. Temperatures in
the ozone layer are low enough that Polar Stratospheric Clouds (PSCs) have
formed widely over the continent.
Environment
Canada Southern
Hemisphere Ozone Map
http://exp-studies.tor.ec.gc.ca/cgi-bin/selectMap?lang=e
Ozone
Hole Reaches South America
7September03-The Ozone hole has
reached land and
population areas in Argentina, Chile and The Falkland Islands.
September
7,2003
Environment
Canada Southern
Hemisphere Ozone Map
http://exp-studies.tor.ec.gc.ca/cgi-bin/selectMap?lang=e
The protective level of ozone has
dropped below 200 dobson units in some areas.
Environment
Canada Southern
Hemisphere Ozone Map
http://exp-studies.tor.ec.gc.ca/cgi-bin/selectMap?lang=e
Ozone
levels are down as much as 50% in some areas.
Environment
Canada Southern
Hemisphere Ozone Map
http://exp-studies.tor.ec.gc.ca/cgi-bin/selectMap?lang=e
Central
Intelligence Agency Maps from University
of Texas Map Center
The area and population affected
including the Argentinean
city of Ushaia which has a population of 30,000 and Punta Arenas, Chile which
has a population of 120,000 are all at risk during this time period.
The
public should avoid going outside during the peak hours of 11:00 a.m. and 3:00
p.m. to avoid exposure to the UV rays. If people do go outside during these
hours they should wear protective sunscreen and if possible a hat or head
covering and sunglasses with a uv rating.
The
Ozone hole has reached land and population areas in Argentina, Chile and The
Falkland Islands since the early 1990's. Ozone levels drop down as much as 70%
in some areas. The protective level of ozone has dropped below 150 dobson units
in some areas.
It has reached further north at times affecting the towns of Rio Gallegos,
Puerto Santa Cruz, and Rio Grande affecting an additional 200,000 people.
Situation at 2003
September 9-British Antarctic Survey
Ozone Bulletin-The ozone has grown rapidly and now covers some 28
million square kilometres, larger than it has ever been at this time in early
September. Very low ozone levels have been recorded over the Antarctic
Peninsula. Temperatures in the ozone layer are low enough that Polar
Stratospheric Clouds (PSCs), the key precursors to significant ozone depletion,
have formed widely over the continent.
Environment
Canada Southern
Hemisphere Ozone Map
http://exp-studies.tor.ec.gc.ca/cgi-bin/selectMap?lang=e
Situation at 2003
September 12-British Antarctic Survey
Ozone Bulletin-The ozone has grown rapidly and now covers some 27
million square kilometres, larger than it has ever been at this time in early
September. Very low ozone levels have been recorded over the Antarctic
Peninsula. The edge of the ozone hole touched the tip of South America on
September 6 - 7. Temperatures in the ozone layer are low enough that Polar
Stratospheric Clouds (PSCs), the key precursors to significant ozone depletion,
have formed widely over the continent and ozone levels are dropping quickly.
The
British Antarctic Survey (BAS) Press release-Published:
12 Sep 2003 BA Festival of Science - The Ozone Hole 14.00 – 17.00. Lecture
Theatre B03, Peel Building, University of Salford Embargo – 09.30 hrs
12
September 2003 11 Sept 2003 PR No.9/2003 http://www.antarctica.ac.uk
Satellite
observations (NOAA) suggest that this year's ozone hole is so far one of the
biggest on record. The annual ‘hole’ has grown rapidly during August and now
covers some 27 million square kilometres, larger than it has ever been at this
time in early September. At the British Antarctic Survey’s Halley Research
Station ground-based ozone observations have commenced with the return of
sunlight. These initial values are around 40% down on those measured before the
ozone ‘hole’ and are comparable to those over the last decade. Speaking at
the British Association Annual Science Festival, Dr Alan Rodger of BAS said, “We
think we are turning the corner but we predict that it will be a decade or more
before we can say unambiguously that the ozone hole is recovering - assuming
that the decline in ozone depleting chemicals continues. Last year's smaller
ozone hole should be regarded as exceptional and was clearly a one off event in
the record so far.”
Recent
measurements at ground-based monitoring stations around the world show that the
loading of ozone destroying chemicals at the surface has been dropping since
about 1994 and is now about 6% down on that peak. The stratosphere, on the other
hand, lags behind the surface by several years and the loading of ozone
depleting chemicals in the ozone layer is at or near its peak. Satellite
measurements show that although the rate of decline in ozone amount in the upper
stratosphere is slowing, the total ozone amount is still declining.
Situation at 2003
September 16-British Antarctic Survey
Ozone Bulletin- The ozone has grown rapidly and is now near its maximum
size at around 26 million square kilometres (roughly twice the size of
Antarctica). It was larger than previously for the time of year in August and
early September, but is a little smaller than the all time record. Very low
ozone levels have been recorded over the Antarctic Peninsula. The edge of the
ozone hole touched the tip of South America on September 6 - 7. Temperatures in
the ozone layer are low enough that Polar Stratospheric Clouds (PSCs), the key
precursors to significant ozone depletion, have formed widely over the continent
and ozone levels are dropping quickly. The ozone hole is usually largest in
early September and deepest in late September to early October. September 16 is
world ozone day.
International
Day for the Preservation of the Ozone Layer September 16- On
19 December 1994, the United Nations General Assembly proclaimed 16 September
the International Day for the Preservation of the Ozone Layer, commemorating the
date, in 1987, on which the Montreal Protocol on Substances that Deplete the
Ozone Layer was signed (resolution 49/114). States are invited to devote the Day
each year to promote, at the national level, activities in accordance with the
objectives of the Montreal Protocol and its amendments. The following present
and past materials and information can be used by governments, industry and
individuals to help celebrate Ozone Day.
http://www.unep.org/ozone/ozone_day2003/index.shtml
Situation at 2003
September 22-British Antarctic Survey
Ozone Bulletin- The ozone hole has grown rapidly and peaked in size at
around 28 million square kilometres (roughly twice the size of Antarctica) in
mid September. It was larger than previously for the time of year in August and
early September, but the maximum size only equalled the all time record. Very
low ozone levels have been recorded over the Antarctic Peninsula. The edge of
the ozone hole touched the tip of South America on September 6 - 7. Temperatures
in the ozone layer are low enough that Polar Stratospheric Clouds (PSCs), the
key precursors to significant ozone depletion, have formed widely over the
continent and ozone levels are dropping quickly. The ozone hole is usually
largest in early September and deepest in late September to early October.
9/22/2003-Media
release: 22 September 2003 |
Antarctic ozone hole – near record levels | Measurements by National Institute
of Water & Atmospheric Research (NIWA) staff at Scott Base, Antarctica-
Antarctic
ozone hole - near record levels
