文章基本信息

标题：High variability of atmospheric mercury in the summertime boundary layer through the central Arctic Ocean
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作者：Juan Yu ; Zhouqing Xie ; Hui Kang 等
期刊名称：Scientific Reports
电子版ISSN：2045-2322
出版年度：2015
卷号：4
期号：1
DOI：10.1038/srep06091
语种：English
出版社：Springer Nature
摘要：The biogeochemical cycles of mercury in the Arctic springtime have been intensively investigated due to mercury being rapidly removed from the atmosphere. However, the behavior of mercury in the Arctic summertime is still poorly understood. Here we report the characteristics of total gaseous mercury (TGM) concentrations through the central Arctic Ocean from July to September, 2012. The TGM concentrations varied considerably (from 0.15 ng/m³ to 4.58 ng/m³), and displayed a normal distribution with an average of 1.23 ± 0.61 ng/m³. The highest frequency range was 1.0–1.5 ng/m³, lower than previously reported background values in the Northern Hemisphere. Inhomogeneous distributions were observed over the Arctic Ocean due to the effect of sea ice melt and/or runoff. A lower level of TGM was found in July than in September, potentially because ocean emission was outweighed by chemical loss.