Seasonal Variation of Legacy Organochlorine Pesticides (OCPs) From East Asia to the Arctic Ocean
Seasonal Variation of Legacy Organochlorine Pesticides (OCPs) From East Asia to the Arctic Ocean
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DOI：
10.1029/2020gl089775
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发表时间：
2020-07
影响因子：
5.2
通讯作者：
Hongyuan Zheng;Yuan Gao;Yinyue Xia;Haizhen Yang;Minghong Cai
中科院分区：
文献类型：
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作者：
Hongyuan Zheng;Yuan Gao;Yinyue Xia;Haizhen Yang;Minghong Cai
2016年和2017年完成了对东亚到北冰洋高纬度地区表层海水和大气中7种遗留有机氯农药（OCPs）的大规模实地调查。海水中OCP（107 OCPs）浓度在夏季中后期呈现出快速和显著的季节变化。海洋是北极最重要的大气OCP源区，反馈影响北方的中纬度或低纬度地区。北冰洋的传统OCP浓度随着距离白令海和阿拉斯加陆地的水团逐渐减少。这项研究是过去十年中对沿着北太平洋至北冰洋样带的OCPs的首次更新调查。它提供了关于在一个经历快速气候变化的区域中有机氯农药全球命运的最新实地数据。
Large‐scale field investigations of seven legacy organochlorine pesticides (OCPs) in the surface seawater and atmosphere from East Asia to the high Arctic Ocean were completed in 2016 and 2017. Seawater OCP (Σ7OCPs) concentrations displayed rapid and significant seasonal variations during mid‐late summer. The ocean is the most significant atmospheric‐OCP source region for the Arctic, and feedback affects the middle‐ or low‐latitude regions of the Northern Hemisphere. The legacy OCP concentrations in the Arctic Ocean were shown to gradually decrease with distance from water masses originating in the Bering Sea and the landmass of Alaska. This study is the first updated investigation of OCPs along the North Pacific Ocean to the Arctic Ocean transect in the past decade. It provides updated field data on the global fate of OCPs in a region undergoing rapid climate change.