A massive glacier in East Antarctica is now in the spotlight as it rapidly retreats (Yale e360). “If the glacier were to melt completely, it holds enough water to raise global sea levels by about 5 feet…..the shape of the ground under the ice makes it very susceptible to rapid climate-driven collapse. Not only would this raise sea levels globally, the unblocked canyon could also serve as a pathway for ocean water to penetrate inland and further melt ice sheets…..new research has shown that East Antarctica, which holds much more ice than the west and therefore poses a greater threat to global sea levels, is not as stable as once thought.”
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–The press release issued by University of California, Irvine has additional details:
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Does “carbon capture and storage,” installed at coal-burning power plants, really have a future? (University of Queensland). It would greatly help to hold down carbon emissions over the remaining life of any such plant, and the state of Queensland , Australia, is one place where the concept is a truly viable option, as reported in this study. The study also looks at all the practical steps that need to be taken, and the time involved, compared with the limited lifetime of the plants needing treatment: “It’s conceivable that commercial scale, meaning of a scale which creates deep emissions cuts, capture and storage could commence around 2030, but we’d need to start the process now.” (Nothing was said about financing, leading one to suspect that difficulties might be encountered in that part of the process.)
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The Great Barrier Reef is again being bleached by warm ocean waters, this time at a pace never seen before (New York Daily News). “This is the third major bleaching event to happen in the past four years, after a 14-year gap between bleachings in 2002 and 2016. The bleaching turns the corals a pale shade of white and makes them more susceptible to disease, and at the rate it’s currently happening, they don’t have enough time to recover and grow back before the next round. The last two bleaching events, combined, killed nearly half of the reef’s corals. Experts are worried about the widespread nature of this year’s bleaching, and they’re alarmed at how much more easily these events happen than they used to, as climate change warms the planet’s oceans.”
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The warming of oceans is also resulting in losses of vast stretches of kelp forests (The Salt Lake Tribune). It’s called a “zombie apocalypse,” in the form of an explosion of purple sea urchins, and its scope is staggering. “Northern California has lost an estimated 90 percent of its kelp forests along a 200-mile stretch of coastline…..It’s a story told round the globe in one form or another, from Norway to Nova Scotia, Australia to the Aleutians. Once-lush beds of massive kelp, up to 100 feet tall and teeming with wildlife, have been replaced by stony “barrens” overrun by urchins and not much else.” Kelp forests store carbon in the same manner as do forests on land, and their loss translates into a similar effect on Earth’s climate as ocean’s reduce their take-up of CO2 from the atmosphere.
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“Coronavirus Holds Key Lessons on How to Fight Climate Change” (Yale e360). “When the COVID-19 pandemic is past, societies may adopt some important measures that would lower emissions, from more teleconferencing to shortening global supply chains. But the most lasting lesson may be what the coronavirus teaches us about the urgency of taking swift action…..If you wait until you can see the impact, it is too late to stop it…..COVID-19 is climate on warp speed…..Everything with climate is decades; here it’s days. Climate is centuries; here it’s weeks.” An excellent article that makes good points throughout.
Carl