星期六 2026年 2月 21日
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研究:南极冰层海冰面积跌至新低 恐影响生态

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研究显示,南极洲海冰面积急剧缩减。

美国太空总署(NASA)周一发表研究指出,南极洲海冰面积自2014年以来急剧缩减,过去4年已追上北冰洋过去34年内失去的海冰面积。

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研究显示,南极洲海冰面积在过去40年一直持续增长,更在2014年达最高纪录的1280万平方公里,但之后急剧下降至前年达到最低值,失去近200万平方公里海冰,使科学家们感到困惑。

负责研究的女科学家帕金森表示,海冰对地球气候极其重要,其表面能将50%至70%太阳光反射回太空。一旦融化,海水表层将吸收90%太阳光,导致全球暖化将会愈趋严重,而且会影响极地的生态系统,包括企鹅、鲸鱼等海洋动物和植物。

英国利兹大学极地观察和模型中心负责人舒柏特指出,过去数十年南极洲海冰持续增长令人欣慰,因其平衡北冰洋海冰缩减的情况,但现时两个极地的海冰都在缩减,即更少的太阳光被反射回太空中,呼吁人们需要更加关注全球暖化的问题。

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