## Tuesday, September 09, 2008

### Kasatochi eruption makes sunsets nice

Kasatochi Island is one of the Aleutian islands arranged in a strip located Southwest of Alaska.

Just when the Olympic games were getting started and Georgia attacked South Ossetia - between August 7th and 8th - Kasatochi volcano erupted. The picture above is from Kansas and was taken from a FoxNews story.

Recall that these nice colors have the same reason as the fact that the sky is blue, namely Rayleigh scattering.

This eruption is also likely to cool the climate just a little bit. A much bigger explosion of Mt Pinatubo (Philippines) in 1991 contributed to more than 0.5 °C year-to-year cooling at that time.