Monday, May 10, 2010

Bracing For Impact

clipped from

Another eruption of the Eyjafjallajökull Volcano in Iceland, another round of air traffic closures.

Eruption of Eyjafjallajökull Volcano, Iceland

As Joe D’Aleo at ICECAP notes, a major eruption in Iceland, especially from Eyjafjallajokull’s larger neighbor, Katla, could impact the climate in the Northern Hemisphere.

“ICECAP NOTE: It is true that tropical volcanism has more global impact as the ash and aerosols travel north and south and affect most of the globe while high latitude volcanoes find ash and gases limited more to the higher latitudes and tend to have effects that don’t last as long. But research by Oman (2005) showed northern hemispheric high latitude volcanoes influence the Arctic and North Atlantic Oscillations which can have a profound effect on the climate

In the polar regions a 30,000-40,000 foot ash and aerosol cloud can have impact. Some of the biggest eruptions in April and again May 6th reached above 30,000 feet.