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2016年是有记录以来最热的一年,地球平均温蒂比二十世纪平均水平高出0.9º C 。巴黎协定的主要目标是在2100年前阻止世界平均温度较前工业化时代上升2℃以上。值得注意的是,发展中国,如分别是世界最大和第三大温室气体排放国的中国和印度,都承诺要达到这一目标。

巴黎协定为这些承诺制定了革命性新框架:“国家自定贡献”(Nationally Determined Contributions,NDC)。每个签署国都列出自己的NDC,即其自愿为减轻人为气候变化的影响这一全球共同目标做出的贡献。

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