Climate Letter #894

India is experiencing an early heat wave this year.  Tomorrow’s forecast shows almost the entire country reaching highs of 100F or better.  It’s just April, but some spots have already been above 112.  It has also been very dry, with the monsoons not due to arrive until June and said to be facing potential delays.  “Heat stress is particularly a concern in India, where many people work outdoors, in farming or on construction sites, and there can be a lack of cooling centers and ready access to clean water.”

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New worries about the melting rate of Greenland’s ice sheet.  There is particular concern over recent discoveries about the underlying topography of the enormous Jacobshavn glacier, where conditions favor an ever-faster retreat that would be impossible to stop.
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Evidence has been found of powerful methane release from hydrate formations during the Cretaceous.  The timing coincided with a period when Earth’s temperature had been warming enough to cause such destabilization, leading to yet more warming.  This is a scenario that many scientists are fearing could be repeated in today’s world.
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Three gigantic canal projects are in the works (story by Fred Pearce).  The one that will slice its way across Nicaragua has just been fully approved and will soon start construction.  Strong protests from environmentalists and nearby inhabitants don’t seem to matter when big money is involved.
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Flow charts that show how energy is put to use in the US.  If you have a little time these are very interesting.  They are especially good at revealing how much of an original energy source gets wasted before any work is performed.  For example, electricity wastes two-thirds of its primary energy, but is improving, while transportation wastes three-quarters and is not.

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