▲智利夏季热浪酿森林大火。
英国媒体《卫报》最新调查显示,全球数百名顶尖气候科学家预估,本世纪全球气温将比工业化前上升2.5℃,超出2015年《巴黎气候协定》的目标1.5℃,而这将导致人类社会在未来5年内面临严重混乱。
《卫报》报导,联合国「政府间气候变化专门委员会」(IPCC)近8成气候专家认为,本世纪全球气温将较工业化前上升至少2.5℃,而近半数受访者预估全球至少会升温3℃,仅有6%认为可满足《巴黎气候协定》订定的1.5℃。过去4年全球平均升温为1.2℃,已经对世界各地生命和生计造成严重损害,若各国政府再不采取行动,后果将不堪设想。
科学家已预见一个「半反乌托邦」(semi-dystopian)的未来,热浪、野火、洪水和风暴的强度和频率都远超过往,还有随之而来的饥荒、冲突和大规模移民。塔斯马尼亚大学海洋生态学家佩尔(Gretta
Pecl)认为,「未来5年内我们将面临严重的社会混乱。(政府)将被一个接一个极端天气事件弄得焦头烂额,粮食生产也将受到影响。」
报导指出,近75%专家认为,缺乏政治意愿是世界未能应对气候危机的主因,也有6成受访者指责企业,如化石燃料产业等既得利益者。然而不论全球气温升高多少,气候斗争都必须持续下去,每避免一度上升都能减轻人类的痛苦,提前做好大规模预防措施,才能保护人们免受气候灾难影响。
联合国哥本哈根气候中心的纽菲尔德(Henry
Neufeldt)指出,「我相信我们拥有将升温控制在1.5℃的解决方案,且将在未来20年内执行,但我担心太晚采取行动,会错过一个或数个气候临界点(tipping
points)。」
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