![]() Global Warming Thus Far For the past 2,000 years, global surface temperatures stayed relatively constant until an unprecedented rate of warming began in the mid-20th century. Get the most fascinating science news stories of the week in your inbox every Friday. And extreme heat waves could become more intense and frequent. Sea level could rise by a meter by 2100, inundating cities. The IPCC report spells out what could happen if we don’t meet these targets: The Arctic could be ice free by mid- to late century. Each of the world’s top three emitters- China, the United States, and the European Union-have goals to slow the rate of emissions this decade. How much further the temperatures rise will depend on emissions. The report predicts that warming will reach 1.5☌ by the early 2030s, exceeding the lower goal of the Paris Agreement. Climate Change Conference of the Parties ( COP26) in Glasgow, Scotland, where the latest report will inform negotiations. The document includes more than 14,000 cited references. More than 200 authors from 66 countries in the organization’s Working Group I wrote the latest report. The IPCC does not conduct its own research: It summarizes the work by global experts and notes where disagreements lie. Environment Programme and the World Meteorological Organization, the IPCC supplies policymakers with policy-neutral information about climate change. It is with this backdrop that the Intergovernmental Panel on Climate Change (IPCC) unveiled its new assessment of global climate science. ![]() During that time, 191 parties signed the Paris Agreement the United States (the world’s second-largest emitter) left and reentered the agreement renewable energy outpaced coal in the United States and all fossil fuels in Europe for the first time and greenhouse gas emissions crashed worldwide during stay-at-home orders before springing back. ![]() It has been 8 years, one pandemic, and a slew of wildfires, storms, and heat waves since the last United Nations climate assessment report was released in 2013.
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