Climate Letter #1193

An IPCC draft looks at prospects for climate change by 2040.  The primary message is that without some radical changes in behavior the current rate of increase in global temperatures—in effect since 1975—will continue at about 0.18C degrees per decade, thus reaching the plus-1.5C landmark target in 2040.  That is not exactly a prediction, except that it is difficult to see where the radical changes will come from.  There are positive forces, like the rapid growth in renewable energy and the decline in coal burning, but those are not enough to turn the tide to the required extent.

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New research demonstrates loss of nutritional value for rice due to global warming.  The problem with this report is that it tied its results to CO2 readings rising all the way up to 1200 ppm by 2100, from 410 today.  That will not happen because humans will start making desperate changes in emissions in just one or two decades as present-day weather effects become intolerable.  This article is still useful because it presents charts and statistics about the current state of nutritional needs around the globe, which are sadly in need of repair.
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A chart comparing the annual rate of growth in GDP and growth in CO2 emissions for the entire globe so far in this century.  The message I get is that a slowing down of GDP growth is shown to be an effective way to reduce emissions growth.  A big GDP slowdown, as in 2008, might very well be the fastest of any way to bring down emissions.  Does this “solution” have any interest?
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The way we eat has a lot to do with our carbon footprint.  Climate Home has dug up some interesting information that is applicable, in some cases quite surprising.
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A special report for The Conversation bearing the latest information about what is happening on and around Antarctica’s ice shelves.  It includes an unusual map showing the exact locations of the shelves, over 300 in number.  The authors are actively engaged in researching the changes taking place and the future implications.
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Another article about Antarctic ice, written for The Atlantic, features commentaries on recently reported observations (see yesterday’s Climate Letter) about the losses of glacial ice mass, and why this news is ominous.

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