原标题：科学家警告：南极臭氧空洞又大又深，达到“年度最大范围”
【环球网报道记者侯佳欣】据《今日印度》10月6日报道，监测臭氧层的科学家警告称，南极上空的臭氧空洞已经达到“年度最大范围”，是近年来最大、最深的空洞之一。
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（南极洲某观测站附近的南极光。图源：美联社）
报道称，根据英国《独立报》的一份报告，哥白尼大气监测局（CAMS）的科学家发现，在南极洲上空、距离地面约20到25公里的高度，臭氧的浓度下降到“接近零值”的水平。
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