Climate Letter #486

The Sierra Nevada mountains had their lowest snowpack in 500 years (or more).  Such a statement, if it can be confirmed, makes the current and ongoing event a truly extraordinary extreme, with major implications.  The authors of this study provide a good explanation for why they believe it is true.

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A new study connects fossil fuel reserves to the full Antarctic ice sheet.  This is more of a long-term approach to the subject than that of Hansen and others, but is very comprehensive in detail and the end result is about the same.  The coming conference in Paris will have to give this work close attention.
Comment:  The real issue is not what will happen if we burn all of the reserves, which will never happen, but how much sea level rise will we get, and how soon, from burning just 10% of them, or even 5%?
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How do we know that humans are causing atmospheric CO2 levels to rise, mainly by burning fossil fuels?  There are at least ten good reasons, all clearly explained in this post I found from three years back.  If you know anyone who has doubts, or just to confirm your own beliefs, this will be useful.
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A separate report on the fate of Antarctica, based on a very recent expedition, will be delivered via lecture this week.  Some of the main details are included in this post.  The information is being released on a fast track to make it available for the meeting in Paris.
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Ruling party in Australia replaces Abbott as Prime Minister.  The main issues had little or nothing to do with climate policies, but the new PM is much less submissive to the coal industry and likely more friendly toward cooperation at the global level.

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The “flow battery” solution to energy storage has a young competitor that is doing the right things and making real headway.  It should be worth watching.
Here is the full press release:
Carl

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