The Jevons Paradox and Christmas Lights

I noticed yesterday evening a significant number of homes with outdoor Christmas lights still up and shining, far more than I remember in past years by mid-January. (No data here, just a hunch.) They looked like the new high-efficiency LED lights, which seems to be the Jevons paradox in action. The core of the paradox …

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River Beat: What a Difference a Month Makes

What a difference a wet, wet month in the Colorado Basin makes. In December, the long range forecasts for the big reservoirs at Lake Powell (upstream) and Lake Mead were flirting with trouble. Lake Mead’s levels for the end of the 2010-11 water year were forecast to drop to 1076.68 feet above sea level, close …

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Climate Change on the Colorado: The Devil In the Details

udpate: full column here (sub/ad req) When I first began seriously trying to sort out New Mexico’s place in the scheme of Colorado River water management, I kept banging unsuccessfully up against what seemed like a simple question: If long term drought or permanent climate change reduces the river’s flow, how would the shortage be …

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Tree Rings’ Tale – Teacher Feedback

I was delighted by the National Science Teachers association recommendation of The Tree Rings’ Tale, especially this bit from science teacher Teri Cosentino: I was so inspired by the book that when a tree was felled on campus, we counted and measured the tree rings to see what happened during the tree’s life during the …

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River Beat: Good Snow Pack News

At the Dry Lake snotel station near Steamboat Springs in northern Colorado, there’s more than 4 feet of snow on the ground. By snow water content, that’s 32 percent above average for Jan. 7. Snow that melts there flows down into the Yampa River, which flows into the Green, which flows into the Colorado, which …

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Stuff I Wrote Elsewhere: The New START Bargain

From the newspaper this week, a look at the bargain that was struck to win support for the New START nuke deal with the Russians (sub/ad req), which includes money for a new plutonium lab at Los Alamos to replace its aging CMR building – despite dramatic cost increases and schedule delays since the project …

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Moving Water, Virgin River Edition

I’ve been watching Lake Mead rise remarkably as a result of last week’s storm that blew through Nevada before drenching the Virgin River watershed on the Arizona-Nevada-Utah border area. It looks like Mead will finish December at a surface elevation of about 1086.25 feet above sea level, 2 feet above the level forecast a month …

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