Climate Letter #1166

Why you should care about the circulation patterns in the Atlantic and other oceans?  Inside Climate News has a fine report that covers all the basics of both cause and effect, and how little there is that can be done about reversing changes once a tipping point has been reached.  The AMOC is not the only concern.
https://insideclimatenews.org/news/07052018/atlantic-ocean-circulation-slowing-climate-change-heat-temperature-rainfall-fish-why-you-should-care

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A decline in dust from the Sahara that feeds nutrients to the Amazon basin.  A new study shows how certain effects of climate change are causing this to happen, and will continue growing.  The dust also boosts the growth of phytoplankton in the Atlantic by adding iron to the water.  It even has an albedo effect that helps cool the Earth.  This article is quite informative.  https://cosmosmagazine.com/climate/dwindling-desert-dust-spells-danger-for-the-amazon

Sediment in freshwater lakes is currently a significant source of methane emissions (Yale e360).  A new study sees potential for those emissions doubling over the next fifty years because of expected changes in the kind of plant matter added to those sediments.  The changes involve the dying off of forests surrounding those lakes and the spread of aquatic plants that have a different kind of chemistry, both due to climate change.  This previously unknown feedback is of a type large enough to have an impact on climate models.
https://e360.yale.edu/digest/scientists-find-new-climate-feedback-loop-in-lakes
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A prominent climate scientist has frank opinions about the problem of climate change and its solution.  This brief video featuring Eric Rignot stresses the point that big lifestyle changes are required, without delay.  He believes we are now dependent on the younger generation to initiate those changes.
https://climatecrocks.com/2018/05/06/climate-change-elevator-pitch-eric-rignot/
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An interview with Paul Ehrlich, fifty years after the publication of his book about the population bomb.  He doesn’t seem particularly hopeful about the current direction of all the problems we’re facing.  There was a light moment when he was asked about how well he gets along with other people who are afraid to hear his views:  “I don’t talk about these things at cocktail parties.  I just drink.”
https://climateone.org/audio/population-bomb-50-years-later-conversation-paul-ehrlich
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How rapidly can new technologies be adopted?  Tony Seba is a popular lecturer who illustrates how it is typical for forecasts to vastly underestimate the adoption rate of exciting new products.  Watch his recent presentation, which is quite fascinating, or just read the shorter summary.
https://cleantechnica.com/2018/05/06/tony-seba-charts-out-the-disruptive-path-forward-to-evs-and-out-of-the-i-c-e-age/
Carl

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