It provides new estimates of the chances of crossing the global warming level of 1.5☌ in the next decades, and finds that unless there are immediate, rapid and large-scale reductions in greenhouse gas emissions, limiting warming to close to 1.5☌ or even 2☌ will be beyond reach. The new report builds on data presented in 2018 where scientists established how the world would be affected by global warming averaging 1.5 ☌ above the temperatures in 1890 - when the industrial revolution started burning fossil fuels on a major scale and pumping greenhouse gases into the atmosphere.
Hundreds of top scientists have been involved in writing and reviewing the report, including Imperial College London's Dr Joeri Rogelj, Director of Research at the Grantham Institute - Climate Change and the Environment, and Professor Joanna Haigh CBE, Distinguished Research Fellow in Atmospheric Physics.Īlthough IPCC reports strictly avoids making recommendations for policymakers, representatives from the 195 governments were involved in approving a set of summary messages that will guide future policies and discussions at the upcoming United Nations Climate Change Conference (COP26) taking place in Glasgow later this year. However, rapid and sustained cuts in the production of carbon dioxide (CO2) and other greenhouse gases would limit climate change, and new findings agreed that net-zero targets to balance out CO2 emissions by the middle of the century would likely be effective in halting further warming.Īlthough it could take 20-30 years for global temperatures to stabilise because the warming emissions from human activities including transportation, industry, agriculture and energy generation cannot be cut to zero overnight, benefits for air quality would come quickly, according to the latest Intergovernmental Panel on Climate Change (IPCC) Report, released today.Ĭlimate Change 2021: The Physical Science Basis, the 6th Assessment Report by IPCC Working Group I was approved on Friday by all 195 member governments of the IPCC. Dr Joeri Rogelj Report author and Director of Research at the Grantham Institute The greater weight of evidence has confirmed the trend, as expected, and it's not really good news. Some of the changes already set in motion – such as continued sea level rise – will be irreversible over the coming hundreds to thousands of years. More than 14,000 studies, recently acquired data on extreme weather events, improved computer models and new evidence on the impact of greenhouse gases on global warming have confirmed scientists' previous findings about climate change.Ĭhanges in the Earth’s climate have been observed in every region and across the whole climate system, many of them unprecedented in thousands or hundreds of thousands of years.
Rapid and sustained cuts to greenhouse gas emissions are the only way to limit sea level rise, heatwaves, droughts and fires, say its authors. We pay our respects to Elders past, present and future, of all Aboriginal and Torres Strait Islander nations.Heavier than usual rainfalls are a consequence of climate change seen around the world
The Bureau of Meteorology acknowledges the traditional custodians of Australia.
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