Wednesday, February 02, 2005

Get ready for global cooling

AP is reporting that two volcanos is Alaska seem to be getting ready to blow. This is code yellow folks.

ANCHORAGE (AP) - Scientists continue to monitor two volcanoes that the Alaska Volcano Observatory says could send dangerous ash into the air at any time.

Mount Spurr, 80 miles west of Anchorage across Cook Inlet, shook itself from a 12-year sleep in early July and has been in Code Yellow status ever since, with daily small earthquakes.

Code Yellow indicates an eruption is possible and could occur with no warning, according to the Alaska Volcano Observatory.
I wonder if volcanic action is included in the climate models that are predicting global warming. Vocanos spew a LOT of CO2. They also put a lot of ash in the atmosphere. Krakatoa blew in 1883. Global temperatures dropped 1.2 deg. C a year after the eruption and did not return to normal until 1888.

The AP report continues with this:
Mount Veniaminof, about 500 miles southwest of Anchorage on the Alaska Peninsula, changed from Code Green, or ``dormant,'' to Code Yellow about Jan. 1. On Jan. 10, the observatory upgraded its activity to Code Orange, indicating the volcano is ``in eruption.''

Ash plumes from Veniaminof can be seen on sunny days and have been photographed from planes. Even when clouds obscure the summit, seismic records indicate the eruption is continuing, said John Power, a geophysicist at the observatory.
The eruption may not have a lot of effect on the climate. But it could. I think what this shows is that we know a lot less about what actually drives the cilmate than we are lead to believe.

Certainly not enough to cripple the world's economy based on what amounts to speculation.

1 comment:

Harald Korneliussen said...

Hi, realclimate covers the theory you're talking about. I'd like to point out also, that volcanoes pour out a lot less CO2 than some people lead us to believe. It's largely insignificant, say the climate scientists. (The ash is another matter, but that is fortunately short-lived compared to greenhouse-driven climate change)