Thin ozone year

One example that comes up again and again in the environmental literature is ozone depletion. It emerged as the unexpected effect of the use of a new class of chemicals. It required global regulation to check. And we seem to have succeeded in dealing with the problem, through the development of substitutes and the operation of the Montreal Protocol.

One flaw in this perspective: after a period of remission, the ozone hole seems to be back at its largest previous size: 29.5 million square kilometers in diameter, around the south pole. This was reported in a statement issued last Friday by the UN weather agency. All told, we still have about 39.8 million tons less stratospheric ozone than before Thomas Midgley invented chlorofluorocarbons (CFCs).

The point is not that the Montreal Protocol has failed (Kofi Annan called the latter “perhaps the single most successful international agreement to date”), but that the ozone layer has not yet recovered sufficiently to be able to deal with other adverse effects – such as an unusually cold and wet stratospheric winter. The general point is simply that, even when technical substitutes and international legal instruments are created, environmental issues can rarely be shelved on a permanent basis.

More on this from the International Herald Tribune.

Author: Milan

In the spring of 2005, I graduated from the University of British Columbia with a degree in International Relations and a general focus in the area of environmental politics. In the fall of 2005, I began reading for an M.Phil in IR at Wadham College, Oxford. Outside school, I am very interested in photography, writing, and the outdoors. I am writing this blog to keep in touch with friends and family around the world, provide a more personal view of graduate student life in Oxford, and pass on some lessons I've learned here. View all posts by Milan