IPCC report warns of ‘irreversible’ impacts of #GlobalWarming – BBC – Coyote Gulch

Click the link to read the article on the BBC website (Matt McGrath). Here is an exerpt :

According to the latest UN assessment, many of the impacts of global warming are now simply “irreversible”. But the authors of a new report say there is still a short window of time to avoid the worst. The Intergovernmental Panel on Climate Change says humans and nature are being pushed beyond their adaptive capacities. More than 40% of the world’s population is “highly vulnerable” to climate, according to the grim study.

But it is hoped that if the rise in temperatures is kept below 1.5°C, it will reduce the expected losses. Just four months after COP26, where world leaders pledged to act quickly against climate change, this new UN study shows the scale of their task.

“Our report makes it clear that the places where people live and work may cease to exist, that the ecosystems and species that we all grew up with and that are central to our cultures and inform our languages ​​may disappear, said Professor Debra Roberts, co-chair of the IPCC.

“So this really is a key moment. Our report makes it very clear that this is the decade for action, if we want to turn things around.”

[…]

Global warming threats to species

  • About half of the living organisms assessed in the report are already moving, either upwards or towards the poles.
  • While up to 14% of assessed species are likely to face a very high risk of extinction if the world warms by 1.5°C, this risk will rise to 29% of species at 3°C ​​of warming.
  • For creatures living in areas classified as vulnerable biodiversity hotspots, their already very high risk of extinction is set to double as warming approaches 2C, and increase tenfold if the world moves to 3C.
  • Click the link to read “‘Delay is death,’ says UN chief António Guterres of new IPCC report showing climate impacts outpace adaptation efforts” on the Inside Climate News website ( Bob Berwyn). Here is an exerpt :

    The findings show the urgency for immediate climate action, but some scientists fear the conflict in Ukraine is distracting from the gravity of its message.

    It can be difficult to focus on the new scientific assessment as war breaks out in Europe, but it’s important to focus on both topics at the same time because they are deeply connected, says climate security expert Rod Schoonover. within the Council on Strategic Risks. ‘ Center for Climate and Security, and a former US intelligence officer.

    Oil and gas development on the Roan via Airphotona

    “You shouldn’t close either. Humanity’s relationship to fossil fuels underpins this invasion,” he said. “Putin thought he could get away with Europe’s reliance on Russian gas.”

    In the longer term, ending dependency might even reduce the need for military spending, since much of that is spent on securing sources and transporting oil and gas. “Reducing reliance on fossil fuels improves the national security of the United States and other countries, and we should make that argument,” Schoonover said.

    In the report, hundreds of scientists representing nearly every country described spiraling climate impacts, with deadly and destructive effects like floods, famines and wildfires exceeding even some of the most ambitious adaptation efforts. Scientists have warned that some of the changes are so extreme and rapid that they will push communities beyond their ability to cope in places like the Arctic and along some coasts, and pose a serious threat to people. food systems in many regions within decades.

    “There are more extremes than the IPCC predicted just a few years ago,” said Rebecca Carter, acting director of climate resilience practice at the World Resources Institute, a think tank on environment and policy based in Washington, DC. “It’s not just about the future anymore. It is now. We have not prevented climate change. Carter was not involved in the production of the report.

    Karley Robinson with her newborn son Quill on their reverse in Windsor, CO. A multi-well oil and gas site sits less than 100 feet from their back door, complete with holding tanks and combustion towers that burn excess gas. Quill was born 4 weeks early. Pictured here at 6 weeks old. Photo credit: The High Country News

    The body of scientific research on the impacts of global warming on health, including mental health, has grown since the IPCC’s last climate assessment cycle in 2014. It shows that scientists have until recently under -estimated the threat of the rapid spread of new infectious diseases, such as tropical pathogens. carried by insects that are expanding their range into areas that were once too cold for them, for example. And the looming climate threat is raising concerns about severe psychological trauma for many people suffering from existential fear, especially young people.

    “Delay is death,” said UN Secretary-General António Guterres, summarizing the findings of the latest in a 30-year series of reports that form the scientific basis for the Paris agreement to limit global warming to nearly 1.5 degrees Celsius (3.6 degrees Fahrenheit). ), which was concluded under the United Nations Framework Convention on Climate Change in 2015.

    Guterres said the report presents “an atlas of human suffering and a damning condemnation of failed climate leadership”, which ignored the fact that almost half of humanity currently lives in the climate danger zone, and that many ecosystems are already on the verge of extinction. no comeback…

    Exceeding the 1.5 Celsius target poses a huge risk

    Ecologist Camille Parmesan, one of the report’s lead authors, said it shows climate impacts will happen faster and be “much more widespread than we thought”. The science assessed for her by the IPCC has opened up “a whole new field of emerging infectious diseases in new regions”, and documents species extinctions and mammalian mass mortalities caused directly by climate change. Local losses of key species are already affecting the stability and integrity of ecosystems, she added.

    Even for the authors, the intensity of some impacts from the current level of warming was surprising and worrisome, she said. Insect-ravaged forests, parched peatlands and “even undisturbed, undisturbed Amazon rainforest” are losing their ability to remove carbon dioxide from the air, she said. “Maybe not every year,” she continued, but at a rate that could still accelerate warming.

    atmospheric CO2 at Mauna Loa Observatory on August 7, 2021.

    Meanwhile, global emissions continue to rise, and the panel’s report warned how risky it would be to exceed the Paris agreement target and rely on carbon dioxide removal technologies. unproven carbon carbon to quickly reduce the temperature…

    In the United States and North America, the report says several million people across all sectors and in all regions are feeling the effects of climate change “much faster and more severely than we previously thought”, said co-author Sherilee Harper, a public health and climate researcher at the University of Alberta.


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