Seasonal changes in gaseous elemental mercury in relation to monsoon cycling over the northern South China Sea


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dc.contributor.author Tseng, Chun-Mao
dc.contributor.author Liu, Char-Shine
dc.contributor.author Lamborg, Carl H.
dc.date.accessioned 2012-10-12T20:04:34Z
dc.date.available 2012-10-12T20:04:34Z
dc.date.issued 2012-08-16
dc.identifier.citation Atmospheric Chemistry and Physics 12 (2012): 7341-7350 en_US
dc.identifier.uri http://hdl.handle.net/1912/5449
dc.description © The Author(s), 2012. This article is distributed under the terms of the Creative Commons Attribution License. The definitive version was published in Atmospheric Chemistry and Physics 12 (2012): 7341-7350, doi:10.5194/acp-12-7341-2012. en_US
dc.description.abstract The distribution of gaseous elemental mercury (GEM) was determined in the surface atmosphere of the northern South China Sea (SCS) during 12 SEATS cruises between May 2003 and December 2005. The sampling and analysis of GEM were performed on board ship by using an on-line mercury analyzer (GEMA). Distinct annual patterns were observed for the GEM with a winter maximum of 5.7 ± 0.2 ng m−3 (n = 3) and minimum in summer (2.8 ± 0.2; n = 3), with concentrations elevated 2–3 times global background values. Source tracking through backward air trajectory analysis demonstrated that during the northeast monsoon (winter), air masses came from Eurasia, bringing continental- and industrial-derived GEM to the SCS. In contrast, during summer southwest monsoon and inter-monsoon, air masses were from the Indochina Peninsula and Indian Ocean and west Pacific Ocean. This demonstrates the impact that long-range transport, as controlled by seasonal monsoons, has on the Hg atmospheric distribution and cycling in the SCS. en_US
dc.description.sponsorship Support was provided by the National Science Council (Taiwan, Republic of China) through grant number NSC 97-2745-M-002-001-;98- 2611-M-002-013- and through a thematic research grant titled “Atmospheric Forcing on Ocean Biogeochemistry (AFOBi)” and from the College of Science (COS#1010023540), National Taiwan University (NTU#101R3252) through a grant of the NTU “Aim for Top University Project” under research platform of the “Drunken-Moon Lake” scientific integration. en_US
dc.format.mimetype application/pdf
dc.language.iso en_US en_US
dc.publisher Copernicus Publications on behalf of the European Geosciences Union en_US
dc.relation.uri http://dx.doi.org/10.5194/acp-12-7341-2012
dc.rights.uri http://creativecommons.org/licenses/by/3.0/ *
dc.title Seasonal changes in gaseous elemental mercury in relation to monsoon cycling over the northern South China Sea en_US
dc.type Article en_US
dc.identifier.doi 10.5194/acp-12-7341-2012

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