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| | On Mauna Loa, An Eye to the Sky Records Global Pollution, Climate Change (Site not responding. Last check: 2007-10-17) |
 | | Mauna Loa Observatory, operated by the National Oceanic and Atmospheric Administration, records the daily path of the plume and obtains particulate samples. |
 | | Says Barnes, "You need measurement records that are at least a few times longer than natural cycles in order to see man-made effects and know that they aren't just natural variations. |
 | | Altogether, the amount of stratospheric ozone has dropped about 6 percent globally since pre-industrial levels, Barnes says, adding: "We expect it to decrease another 2 percent total in the next 15 to 10 years, and then start to recover." Over time, complete recovery of stratospheric ozone levels is possible, he says. |
| www.environment-hawaii.org /404on.htm (981 words) |
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