An update on the dire situation in Africa’s Sahel region. The region is described as “as one of the world’s most vulnerable victims of climate change, with 300 million people affected. Drought, desertification and scarcity of resources have led to heightened conflicts between crop farmers and cattle herders and weak governance to social breakdowns…..temperature increases are projected to be 1.5 times higher than the rest of the world.”
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–The Sahel today ranks among the very hottest places on Earth, as can be seen on this map (scroll down). Other sources show that increases throughout the region have been in a range of 1.5 to 1.7 degrees C since the late 19th century.
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Two scientists who specialize in the study of ancient climate history express concern over the relevance of losing oceanic oxygen content. These losses have played a major role in past extinction events, both the major ones and many of lesser magnitude, and early signs of a repeat are in evidence today. “The world’s oceans have lost more than 2 percent of their dissolved oxygen reservoir over the past five decades.” The recently released IPCC report “notes that if temperatures increase by 2°C instead of 1.5°C, substantially more oxygen loss will occur in the oceans…..A global warming threshold?” This story describes the kind of harm that can be done.
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George Monbiot states his overall appraisal of what is going on today with respect to climate change and the human response (The Guardian). George is a veteran British journalist who is very well known in the UK, one who is not afraid to display his passion for saving the whole natural world, including humans, from disaster. There are a number of links in this post that have additional high quality information.
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A recent scientific study that received widespread publicity is admitted to have contained errors. This is interesting in large part because it demonstrates how scientists are quick to check up on each other, and in this case how the originating scientists have shown themselves ready to accept criticism and make necessary adjustments. It should help build public confidence in how the whole system operates. Here the questions are not so much about the nature of the main conclusion as about the way the degrees of uncertainty were calculated, leading to their underestimate. The whole approach used in making the study is of a type that was bound to require future intensive vetting and refining by others. https://www.washingtonpost.com/energy-environment/2018/11/14/scientists-acknowledge-key-errors-study-how-fast-oceans-are-warming/?
The rapidly rising demand for air conditioning is causing two serious problems. “The problem with air-conditioning comes from two sources: the amount of energy used, much of which is still powered by carbon-emitting coal, oil and gas generation, and the leaking of hydrofluorocarbon (HFC) coolants, which are short-lived climate pollutants many times more potent than carbon dioxide.” According to a new report from the Rocky Mountain Institute, this “could increase the planet’s temperatures an additional half a degree Celsius by the end of the century.”
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The growing need for adaptation to climate change is generating a host of new products (The Atlantic). This post is by an author who has noticed the trend and even has some delightful new ideas of his own.
Carl