On May 2 Mount Chaiten in Chile blew up. The initial eruption lifted debris to around 10 miles, which is enough to induce some cooling in the Southern Hemisphere.
The latest blast sent pulverized rock and probably a lot of sulfer 20 km up. If a blast drives stuff 20 miles up, it will provide cooling as far North as the tropics.
It isn't over yet, and those with curiosity may want to read about H. H. Lamb, whose original work on the Volcanic Dust Veil in 1966 has been sound.
The benchmark number on global cooling is an eruption big enough to send a cubic mile of aerosols about 20 + miles up.
Curiosity on this one may be rewarded by reading about Mount Tambora in Indonesia in 1815.
In the summer of 1816 farmers in New York state had their drops frosted --even in July. History has referred it as the "Year without a summer".
It will be interesting to see how the propaganda mongers of contrived theories about anthropogenic warming handle this one.
Avatar is the 68 Super, bought new.
Last edited by Subtle; 05-06-2008 at 08:58 AM.