Climate Letter #898

A report prepared in Germany on the connection between climate change and terrorism.  “Terrorist groups will exploit the natural disasters and water and food shortages expected to result from climate change and allow them to recruit more easily, operate more freely and control civilian populations, argues the report by Berlin thinktank Adelphi.”  Four case studies are provided.  The views are representative of those used as a guide for planning by the US military.

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Horrific effects of the current drought in southern India.  The current state is the result of failure of the 2016 monsoon rains.  India today is baking hot as it hopes and prays for rains to return this summer.  In terms of scale, nothing elsewhere compares with the level of disaster that could befall this densely populated country as it contends with a combination of record temperatures and the growing uncertainties of wind movement patterns in the upper atmosphere that the monsoon season depends on.
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Global temperatures so far this year do not respond to either El Nino or La Nina.  The chart included in this post is worthy of a long look, because it tells so much about the cause of annual variations (with the exception of major volcanic eruption effects).  Periods of years or months identified as “neutral,” taken in isolation, now appear to be adding warmth at a rate not seen before.  Overall, in order for the long-term trend to decelerate it seems that we need to have a period of several years that are dominated by La Nina conditions, as last seen in 2010-11.
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A simple chart puts the global warming trend in perspective all the way back to 1880, month by month:
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An Australian scientist talks about the need to remove CO2 from the atmosphere, and the cost.   Professor Rohling participated in the writing of a major report headed by James Hansen issued late last year.  He notes that current costs of extraction start at around $150 per tonne, which can be reduced with improving technology but still add up to a lot of money.  (By comparison the carbon taxes that nobody wants to pay are typically proposed at below $50 per tonne of emissions.)
–The Hansen report mentioned above is available in its entirety as a pdf at the following address.  It is an outstanding source of up-to-date information, based on collective thinking and evidence provided by around 100 previous studies published by other groups.
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Interview with a professor of environmental law, climate change law and energy regulation at Columbia University.  The post begins with a short summary of his personal opinion on a number of interesting topics, their status and likely outcome.
Carl

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