Hmm: Unusually clean atmosphere may have been key driver of ‘global warming’

Hmm: Unusually clean atmosphere may have been key driver of ‘global warming’
Mt Pinatubo erupts in 1991 in the Philippines. (Image: Screen grab of YouTube video)

[Ed. – Not sure I entirely buy this one, since I think 1998 is still our recent “peak heat” benchmark, and ’98 was much closer to Pinatubo in 1991 than we are now.  But the point serves as a reminder of the many bigger-than-man phenomena that affect climate and temperatures.  The post’s comments section also serves as a reminder that climate-blog comments sections usually reach Peak “97%” Sarc within the first five comment threads.  We need a new “law” to go with Godwin’s.  Punctuation in original.]

Observations during lunar eclipses show how Earth’s atmosphere has cleared, letting in more sunlight

Strange but true: You can learn a lot about Earth’s climate by watching a lunar eclipse. This week at the 46th Global Monitoring Annual Conference (GMAC) in Boulder, CO, climate scientist Richard Keen of the University of Colorado announced new results from decades of lunar eclipse monitoring.

“Based on the color and brightness of recent eclipses, we can say that Earth’s stratosphere is as clear as it has been in decades. There are very few volcanic aerosols up there,” he explains.

This is important, climatologically, because a clear stratosphere “lets the sunshine in” to warm the Earth below.

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