联合国警告：气候危机进入“极度危险”阶段

Core Insights - The World Meteorological Organization (WMO) reports that carbon dioxide levels have reached their highest in at least 800,000 years, with growth rates tripling since the 1960s [2][3] - The report highlights a "vicious cycle" of climate change exacerbated by emissions from fossil fuels and increasing wildfires, while the Earth's ability to absorb these gases is diminishing [3] Summary by Sections Carbon Dioxide Levels - The average global carbon dioxide concentration is projected to increase at the highest annual rate since monitoring began in 1957, rising from 2.4 ppm (parts per million) during 2011-2020 to 3.5 ppm for 2023-2024 [3] Climate Change Impacts - The WMO emphasizes that the heat trapped by greenhouse gases is intensifying climate warming, leading to more extreme weather events, which poses risks to economic security and social welfare [3] - Climate Analytics CEO Bill Hare describes the new data as "shocking and concerning," indicating a feedback loop driven by record high temperatures, forest fires, and warming oceans [3] Global Response and Commitments - Despite some governments continuing to promote fossil fuel use, certain companies and local governments are taking proactive measures against global warming [3] - However, few countries have made new climate commitments that adequately address the severity of the climate crisis [3] Future Projections - The WMO warns that the increase in greenhouse gas concentrations in 2024 indicates a long-term warming trajectory, with methane and nitrous oxide levels also reaching historical highs [3] - The report raises doubts about the world's ability to meet the goals of the Paris Climate Agreement, which aims to limit global temperature rise to 1.5 degrees Celsius above pre-industrial levels [3]