Climate Letter #1328

A new impact analysis tied to the Amazon Forest Dieback hypothesis.  The hypothesis states that there is a tipping point for deforestation, beyond which there is no way to control the full conversion of the tropical jungle to an open savanna.  Currently, deforestation stands at 17-19%, while the tipping point, as recently amended, has been reduced to a range of just 20-25%.  The new study is based only on economic costs, which show that prevention is far more attractive for the Brazilian nation, which recently elected a new president who uses a totally different set of standards for guidance.  The rest of the world, plus innumerable species other than humans, also have an interest in the future of this enormous rainforest.

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‘Climate change impact on Iran doubles world average’ (Tehran Times).  “The effects of climate change on Iran has more than doubled on average compared to other parts of the world, while southern provinces of the country are more likely to bear the consequences…”  Other sources show much of the entire country rising at about 2.4C over the global pre-industrial average.

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The city of Hong Kong has a unique set of challenges with respect to the impact of heat waves.  That has made it useful as a case study for planning agencies.  The heat island effect is unusually strong because of the compact nature of its structures and lack of greenery.  Many people lack air-conditioning, leaving them especially vulnerable, and they may also be advised not to linger outdoors in the strong tropical sun.  The high and growing number of elderly persons have extra difficulties in coping.
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An excellent overview of all the things that are going wrong because of climate change.  Bob Berwyn, a veteran climate reporter for Inside Climate News, has a complete set of up-to-date notes, many of them uncommonly seen, mostly with charts.  The short video at the end, featuring the managing editor of ICN, is a frank type of statement that captures the true sense of urgency that is required if the worst risks are to be avoided.
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A pair of photographers who bring us images of some of the worst damage being done right now give us their own unique perspectives on the climate change story.
Carl

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