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- Title
High variability of atmospheric mercury in the summertime boundary layer through the central Arctic Ocean.
- Authors
Juan Yu; Zhouqing Xie; Hui Kang; Zheng Li; Chen Sun; Lingen Bian; Pengfei Zhang
- Abstract
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.
- Subjects
ARCTIC Ocean; ATMOSPHERIC mercury; BOUNDARY layer (Aerodynamics); BIOGEOCHEMICAL cycles; RUNOFF
- Publication
Scientific Reports, 2014, p1
- ISSN
2045-2322
- Publication type
Article
- DOI
10.1038/srep06091