Climate Letter #1337

Posted on January 10, 2019 by Carl Campbell
Today, a change of pace.  There just isn’t much fresh material these days of the kind I like to pick stories from, which are preferably short and to the point with possibly wide interest.  Following are some longer things I have hung onto for awhile that may be of special interest for willing readers:

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“When the ice melts: the catastrophe of vanishing glaciers” (The Guardian).   This is an edited extract from a new book entitled The End of Ice by Dahr Jamail. 
https://www.theguardian.com/news/2019/jan/08/when-the-ice-melts-the-catastrophe-of-vanishing-glaciers
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“When Whales and Humans Talk,” by Krista Langlois.  This article published by Hakai Magazine is also available as a podcast.
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An explanation of the “Green New Deal,” by David Roberts (VOX).  What the term means has not yet been completely figured out, but we are sure to hear much more about it.
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A preview of the risks we are taking from emerging feedbacks and tipping points in a warming world.  This link is to the full study of a report published last August, reviewed at that time in Climate Letters on August 7 and 8.  It was written in non-technical language for general readership by a group of distinguished Earth System scientists.  From their Conclusions:  “Our analysis suggests that the Earth System may be approaching a planetary threshold that could lock in a continuing rapid pathway toward much hotter conditions—Hothouse Earth. This pathway would be propelled by strong, intrinsic, biogeophysical feedbacks difficult to influence by human actions, a pathway that could not be reversed, steered, or substantially slowed.  Where such a threshold might be is uncertain, but it could be only decades ahead at a temperature rise of ∼2.0 °C above preindustrial, and thus, it could be within the range of the Paris Accord temperature targets.  The impacts of a Hothouse Earth pathway on human societies would likely be massive, sometimes abrupt, and undoubtedly disruptive.”  This is the clearest and most rational statement you will ever see about why there is such an urgent need to lower the risk by taking actions that may seem extreme.
–A separate but closely related study, published in December, has taken a look at six climate states from the past that we can choose from for possible reentry, starting with the mid-Pliocene era that is almost locked in already.  (Previously reported in CL #1319).
Carl

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