Tuesday, April 07, 2009

Beautiful Sunset Alert

Maybe, if the clouds permit:
A loop of sulfur dioxide gas approximately 600 miles in diameter is swirling off the coast of California. It came from Alaska where Mt. Redoubt unleashed its biggest eruption yet on April 4th.

The April 4th eruption produced a long plume of stratospheric SO2 which has since split. Half is drifting across the northern reaches of Canada; the other half is having a close encounter with the Pacific coast of North America.

Sulfur dioxide and associated aerosols have been known to produce sunsets of exceptional beauty. Examples from the 2008 eruption of Kasatochi may be found here and here. Readers in the path of Redoubt's clouds should be alert for rare colors and rays in the evening sky.

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