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Originally posted by MaskedAvatar
Sometimes I get the feeling dragonrider lays ozone holes as traps for the unwitting, who may venture forth and profess on global warming and CFCs and the damage being done... only to be shot down in flames by experts who say for the Bush administration that "Pollution is good! We are for smog!"
Therefore I venture carefully into such topics, and suggest a good dose of
"global warming CFCs" googling.
Very interesting results.
[Edited on 12-9-2003 by MaskedAvatar]
Recent satellite images reveal that the ozone hole had shrunk considerably compared with the previous two years. Scientists caution that the data are insufficient to conclude that the fragile ozone layer is on the mend.
One of the ozone layer’s most destructive attackers—bromine—is decreasing in the lower atmosphere, according to NOAA researchers. They attribute the decline of total bromine primarily to international restrictions on industrial production of methyl bromide.
Global industrial production of methyl bromide has declined in recent years in response to restrictions outlined in the amended Montreal Protocol, say the researchers. The Montreal Protocol, which limits production of ozone-damaging compounds, was originally signed by the United States and 22 other nations in 1987, and has been strengthened through revisions and amendments since then.
The NOAA scientists were able to discern this reversal in the long-term upward trend for bromine based on their ground-based measurements of methyl bromide and halons over the past eight years at 10 stations across the globe, including Cape Grim, Tasmania; the South Pole; Mauna Loa, Hawaii; and Barrow, Alaska. Methyl bromide and halons together account for nearly all of the human-released bromine that reaches the stratosphere. These results are an example of the unique benefits a comprehensive coordinated global observing system provide, as envisioned at the recent U.S. sponsored Earth Observation Summit held in Washington, D.C.