![]() The report also indicates that further warming will amplify permafrost thawing, and the loss of seasonal snow cover, melting of glaciers and ice sheets, and loss of summer Arctic sea ice.Ĭhanges to the ocean, including warming, more frequent marine heatwaves, ocean acidification, and reduced oxygen levels, affect both ocean ecosystems and the people that rely on them, and they will continue throughout at least the rest of this century. Moreover, coastal areas will see continued sea level rise throughout the 21st century, contributing to more frequent and severe coastal flooding in low-lying areas and coastal erosion.Įxtreme sea level events that previously occurred once in 100 years could happen every year by the end of this century. Changes to monsoon rain patterns are expected, which will vary by region, the report warns. In high latitudes, precipitation is likely to increase, while it is projected to decrease over large parts of the subtropics. This brings more intense rainfall and associated flooding, as well as more intense drought in many regions. For example, climate change is intensifying the natural production of water – the water cycle. Watch the video, □ ⬇️ /hZOSU1xWQR- IPCC August 9, 2021Īt 2☌ of global warming, heat extremes are more likely to reach critical tolerance thresholds for agriculture and health.īut it won’t be just about temperature. “The role of human influence on the climate system is undisputed.” – Working Group I Co-Chair ➡️ The #IPCC released its latest #ClimateReport today, #ClimateChange 2021: the Physical Science Basis. The document shows that emissions of greenhouse gases from human activities are responsible for approximately 1.1☌ of warming between 1850-1900, and finds that averaged over the next 20 years, global temperature is expected to reach or exceed 1.5☌ of heating. Meanwhile, global mean sea level has risen faster since 1900, than over any preceding century in at least the last 3,000 years. ![]() For example, temperatures during the most recent decade (2011–2020) exceed those of the most recent multi-century warm period, around 6,500 years ago, the report indicates. Global surface temperature has increased faster since 1970 than in any other 50-year period over a least the last 2,000 years. In 2019, atmospheric CO2 concentrations were higher than at any time in at least 2 million years, and concentrations of methane and nitrous oxide were higher than at any time in the last 800,000 years. The report, prepared by 234 scientists from 66 countries, highlights that human influence has warmed the climate at a rate that is unprecedented in at least the last 2,000 years. He added that ahead of the crucial COP26 climate conference in Glasgow in November, all nations - especiall the advanced G20 economies - needed to join the net zero emissions coaltion, and reinforce their promises on slowing down and reversing global heating, "with credible, concrete, and enhanced Nationally Determined Contributions (NDCs)" that lay out detailed steps. " Inclusive and green economies, prosperity, cleaner air and better health are possible for all, if we respond to this crisis with solidarity and courage", he said. The UN chief in a detailed reaction to the report, said that solutions were clear. " We must act decisively now, to keep 1.5 alive." The only way to prevent exceeding this threshold, is by urgently stepping up our efforts, and persuing the most ambitious path. We are at imminent risk of hitting 1.5 degrees in the near term. He noted that the internationally-agreed threshold of 1.5 degrees above pre-industrial levels of global heating was "perilously close. The alarm bells are deafening, and the evidence is irrefutable". The UN Secretary-General António Guterres said the Working Group's report was nothing less than " a code red for humanity. Strong and sustained reductions in emissions of carbon dioxide (CO2) and other greenhouse gases, could quickly make air quality better, and in 20 to 30 years global temperatures could stabilize. Many of these changes are unprecedented, and some of the shifts are in motion now, while some - such as continued sea level rise – are already ‘irreversible’ for centuries to millennia, ahead, the report warns.īut there is still time to limit climate change, IPCC experts say. We must act decisively now to avert a climate catastrophe. Global heating is affecting every region on Earth, with many of the changes becoming irreversible. ![]() The evidence is irrefutable: greenhouse gas emissions are choking our planet & placing billions of people in danger.
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