A new Current State of the Climate report from Carbon Brief. This covers global temperature anomalies, El Nino developments and sea ice measurements, well-charted, from all major sources of data. It is worth noting the difference between northern and southern hemisphere temperatures as shown on two separate maps.
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Update on the European heatwave (Reuters). More all-time records smashed.
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New evidence suggests faster sea level rise as oceans get warmer (Inside Climate News). A new method has been developed for measuring the undersea melt rate of tidewater glaciers, with surprising results. “Beneath the ocean’s surface, glaciers may be melting 10 to 100 times faster than previously believed, new research shows…..Their findings suggest that the theories currently used to gauge glacier change are underestimating glaciers’ ice loss.” (Whether this melt rate would be accelerated by yet warmer water in the future was suggested but not established.) https://insideclimatenews.org/news/25072019/glacier-melting-warming-oceans-climate-change-arctic-antarctica-study
A separate study has measuring the actual changes in mass balance of Antarctic glaciers since 1972. East Antarctic glaciers have actually gained mass because of a high rate of added snowfall, but greater total losses have been observed in the West, principally due to the accelerating rate of declines from the massive Thwaites and Pine Island glaciers in the Amundsen Sea area. “Ice losses from the Amundsen Sea sector of WAIS have increased progressively over the course of our survey and were 5 times greater in the final decade of our survey than during the initial decade.” (That alone raises concerns over a near-term potential for ten feet of future sea level rise.)
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More commentary on the unprecedented wildfires inside the Arctic Circle, as reported in CL#1473 (EcoWatch). This story has more clarity about the nature of these fires, the lack of access by firefighters, and the extreme dangers posed by the nonstop burning of peat beds that are emitting vast amounts of carbon to the atmosphere.
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The latest report on the rate of deforestation in the Brazilian Amazon basin (The Guardian). A real nightmare, set by deliberate policies of the new Bolsonaro government. “The steady erosion of tree cover weakens the role of the rainforest in stabilising the global climate. Scientists warn that the forest is in growing danger of degrading into a savannah, after which its capacity to absorb carbon will be severely diminished, with consequences for the rest of the planet.” We all need to be frightened by this.
Carl