Annual global emissions of carbon dioxide 1940-2023|全球碳排放数据集|环境变化数据集

Global carbon dioxide emissions from fossil fuels and industry totaled 37.15 billion metric tons (GtCO₂) in 2022. Emissions are projected to have risen 1.1 percent in 2023 to reach a record high of 37.55 GtCO₂. Since 1990, global CO₂ emissions have increased by more than 60 percent.Who are the biggest emitters?The biggest contributor to global GHG emissions is China, followed by the United States. China wasn't always the world's biggest emitter, but rapid economic growth and industrialization in recent decades have seen emissions there soar. Since 1990, CO₂ emissions in China have increased by more than 400 percent. By comparison, U.S. CO₂ emissions have fallen by 2.6 percent. Nevertheless, the North American country remains the biggest carbon polluter in history. Global events cause emissions to dropThe outbreak of COVID-19 caused global CO₂ emissions to plummet some 5.5 percent in 2020 as a result of lockdowns and other restrictions. However, this wasn't the only time in recent history when a major global event caused emissions reductions. For example, the global recession resulted in CO₂ levels to fall by almost two percent in 2009, while the recession in the early 1980s also had a notable impact on emissions. On a percentage basis, the largest annual reduction was at the end of the Second World War in 1945, when emissions decreased by 17 percent.

全球化石燃料及工业领域的二氧化碳排放总量在2022年达到371.5亿吨（GtCO₂）。预计2023年排放量将上升1.1%，创下历史新高，达到375.5 GtCO₂。自1990年以来，全球二氧化碳排放量已增长超过60%。谁是最大的排放国？全球温室气体排放的最大贡献者为中国，紧随其后的是美国。中国并非始终是世界最大的排放国，但近年来经济的快速发展和工业化导致其排放量激增。自1990年以来，中国的二氧化碳排放量增长了超过400%。相比之下，美国的二氧化碳排放量下降了2.6%。尽管如此，北美国家依然是历史上最大的碳污染者。全球事件导致排放量下降。COVID-19疫情的爆发导致2020年全球二氧化碳排放量大幅下降约5.5%，这是由于封锁和其他限制措施所致。然而，这并非近期历史上唯一一次重大全球事件导致排放量减少的情况。例如，2009年的全球金融危机导致二氧化碳水平下降了近2%，而20世纪80年代初的经济衰退也对排放量产生了显著影响。在百分比方面，最大的年度降幅出现在第二次世界大战结束后的1945年，当时排放量下降了17%。