-
CFCs invented "wonder gas."
CFCs invented "wonder gas" in 1928
for commercial applications. -
Rowland and Molina discovers CFC molecules split off chlorine atoms.
In late 1973, Rowland and Molina, who had recently joined Rowland’s lab, used data from a variety of published sources to calculate that CFC molecules released near the surface of Earth would, over decades, wind up in the stratosphere where UV radiation would split off chlorine atoms. Each chlorine atom would react immediately with an ozone molecule, setting off a chain reaction that would destroy thousands of ozone molecules. -
People begin studying the ozone layer.
In 1977, the United Nations Environment Programme (UNEP)
sets up a co-ordinating committee to study the ozone layer. -
The ban of use of CFCs in aerosols.
In 1978, the United States of America, Canada,
Sweden and Norway ban the use of CFCs in aerosols. -
Countries unite to protect the ozone layer.
In 1981, UNEP starts inter-governmental negotiations to protect the ozone layer. -
The consumption of CFCs increases again.
After 1982, in the absence of other moves, the consumption of CFCs increases again. Industry demands proof of ozone depletion due to CFCs. -
Governments agree to work together to protect the ozone layer.
Governments agree to study, exchange information and
protect the ozone layer - through the Vienna Convention for the Protection of the Ozone Layer (1985). Scientists continue to find proof of ozone depletion. -
The ozone layer goes through severe thinning.
The British Antarctic Team discovers severe thinning in the ozone layer over Antarctica - the ozone hole. -
Forty-six governments agree to cut in the production and consumption of CFCs by 50%.
In 1987, 46 governments agree to a fifty percent cut in the
production and consumption of CFCs by the year 2000; a freeze
in production and consumption of halons by 1992; further
controls linked to assessments by experts. -
Report on ozone trends links CFCs to ozone depletion.
In 1988, the UNEP - WMO report on ozone trends links CFCs to ozone depletion. -
The need for tougher controls are reported.
In 1989, the UNEP Assessment Panel of experts reports the need for tougher controls. -
Parties agree to phase out CFCs and help developing countries.
Parties agree to completely phase out CFCs by the year 2000, and to establish a Multilateral Fund to assist developing countries. US$ 240 million was allocated for 1991 - 1993. -
UNEP Assessment Panels suggests more substances are to be controlled and the phase out of CFCs is advanced.
UNEP Assessment Panels recommend that more substances (HCFCs, methyl bromide) are controlled and that the phase out of CFCs is advanced. -
The Copenhagen amendment was established, causing developing countries to phase out HCFCs by 2030 and etc.
In 1992, it was decided that the developed countries phase out
HCFCs by 2030, freeze methyl bromide by 1995 and that the
phase out of CFCs be brought forward to 1996. -
The Meeting of the Parties agree to a replenishment of the Multilateral Fund.
In 1993, the Meeting of the Parties, held in Bangkok, agrees to a
replenishment of the Multilateral Fund - US$455 million for 1994 - 1996. -
UNEP Assessment Panels suggests tougher controls on methyl bromide.
Halons are phased out by industrialized countries. UNEP Assessment Panels recommend tougher controls on methyl bromide. -
Some countries report an inability to phase out CFCs due to their internal problems.
Some countries, the Russian Federation and others, report an
inability to phase out CFCs by 1996 due to their internal problems.
The Global Environment Facility (GEF) offers to help them.
Developing countries agree to phase out methyl bromide by 2010. -
The Meeting of the Parties approves the replenishment of the Multilateral Fund.
The Meeting of the Parties held in Costa Rica, approves the
replenishment of the Multilateral Fund and gives US$ 466 million for 1997-1999. -
Licensing for the import and export of CFCs came to be.
Licensing for the import and export of CFCs was introduced. GEF assists countries with economies in transition to phase out CFCs. -
The Ozone meetings approved a replenishment of the Multilateral Fund for 2000-2002.
The Ozone meetings in Beijing in December 1999 approved a
replenishment of the Multilateral Fund of US$ 440 million for the years 2000-2002 for continuing the phase-out of CFCs, in addition to the carry-over of US$ 35.7 million from the previous period.
