Gaseous elemental mercury (Hg(0)) in the surface air over the Sea of Japan, the Sea of Okhotsk and the Kuril-Kamchatka sector of the Pacific Ocean in August–September 2017

Калинчук, В. В.; Аксентов, К. И.; Karnaukh, V. N.

doi:10.1016/j.chemosphere.2019.02.185

Cited by 9 publications

(3 citation statements)

References 79 publications

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“…The wind streamlines for near-surface-level conditions were assessed from https://earth.nullschool.net/ (last access: February 2020) and long-range transport of air pollutants was calculated using the HYSPLIT model (Draxler and Rolph, 2003) from NOAA (National Oceanic and Atmospheric Administration).…”

Section: Sampling Site and Analytical Methodsmentioning

confidence: 99%

Source apportionment of atmospheric mercury in the remote marine atmosphere: Mace Head GAW station, Irish western coast

2020

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Abstract. We examined recent atmospheric mercury concentrations measured with a high temporal resolution of 15 min at Mace Head, a GAW station on the western coast of Ireland. We attributed a direct contribution of 34 % (0.44 ng m−3) to primary sources. Additionally, a steep decline (0.05 ng yr−1) in mercury concentrations was observed between 2013 and 2018. Using a stereo algorithm we reconstructed 99.9 % of the atmospheric mercury. A conservative analysis demonstrated no decrease in total gaseous mercury (TGM) associated with atmospheric species typically used as tracers for oceanic emissions. The results show that the atmospheric mercury mass is mainly loaded in a baseline factor with an ongoing decline. Moreover, we exploit temporal variation and wind pattern effects in the measured atmospheric species; the results show that the diurnal variation and seasonality in TGM observed in Mace Head are closely related to other species linked to primary sources and can be explained by transport from continental areas.

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Section: Sampling Site and Analytical Methodsmentioning

confidence: 99%

Source apportionment of atmospheric mercury in the remote marine atmosphere: Mace Head GAW station, Irish western coast

2020

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“…Atmospheric transport of Hg(0) from northeast China was repeatedly observed in the Sea of Japan and was likely associated with anthropogenic emissions (Kalinchuk et al, 2021). Elevated concentrations of Hg(0) were previously recorded over the Kuril sector of the Pacific Ocean, which were presumably caused either by volcanic emissions (Kalinchuk et al, 2019) or an increased flux of Hg( 0) emissions from sea water in this region (Kalinchuk et al, 2021).…”

Section: Resultsmentioning

confidence: 99%

Atmospheric gaseous elemental mercury and its sea-air evasion fluxes from the Sea of Okhotsk to the South China Sea: results of cruise studies in 2019

Калинчук

Lopatnikov²,

Ivanov³

2022

LFWB

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Abstract. At present, the behavior of mercury in the sea-atmosphere system in the north western Pacific Ocean is poorly understood. From September to December 2019, continuous measurements of atmospheric gaseous elemental mercury (Hg(0)) and point measurements of Hg(0) evasion fluxes from the sea to the atmosphere were carried out during two adjacent cruises from the South China Sea to the Sea of Okhotsk. The median concentration of Hg(0) (1.1 ng/m3) was below both the background of the Northern Hemisphere and the average values previously recorded in these areas. There was a trend of increasing Hg(0) concentration with decreasing latitude. The Yellow Sea with adjacent territories and northeast China were the Hg(0) source area for the Sea of Japan and the Sea of Okhotsk. The Kuril sector of the Pacific Ocean was identified as a source of Hg(0) for the Sea of Okhotsk. East China, Southeast China and Indochina were sources of Hg(0) for the East China and South China seas. A winter increase in Hg(0) concentrations was observed in the Sea of Japan and the East China Sea. Our data showed significant relationships between Hg(0) fluxes, latitude, and water temperature.

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“…The diurnal cycle of elemental mercury (Hg 0 ) has been discussed extensively (Laurier et al, 2003;Weiss-Penzias et al, 2003;Laurier and Mason, 2007;Xia et al, 2010;Obrist et al, 2011;Moore et al, 2013;Wang et al, 2014;Ci et al, 2015;Wang et al, 2017;Castagna et al, 2018, Jiskra et al, 2018. Kalinchuk et al (2019) reported solar radiation-driven increase and decrease of mercury concentrations in the Sea of Japan and in the Sea of Okhotsk, respectively. They assumed that the decrease in Hg 0 concentrations in the marine boundary layer during daytime is mainly caused by its oxidation, catalyzed by active halogen species (mainly by atomic bromine radicals), which are released from sea salt aerosols as Br2 and could be transformed into reactive forms as a result of photolysis (Holmes et al, 2009;Sprovieri et al, 2010;Mao and Talbot, 2012;Moore et al, 2013;Si and Ariya, 2018).…”

Section: Temporal and Wind Pattern Effects In Mercury Concentrationsmentioning

confidence: 99%

Source apportionment of atmospheric mercury in the remote marine atmosphere: Mace Head GAW station, Irish west coast

Custódio¹,

Ebinghaus²,

Spain³

2020

Preprint

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Abstract. We examined recent atmospheric mercury concentrations measured with a high temporal resolution of 15 min. at Mace Head, a GAW station on the west coast of Ireland. We attributed a direct contribution of 34 % (0.44 ng m−3) to primary sources. Additionally, a steep decline (0.05 ng year−1) in mercury concentrations was observed between 2013 and 2018. Using a stereo algorithm we reconstructed 99.9 % of the atmospheric mercury. A conservative analysis demonstrated no decreasing of TGM associated with atmospheric species typically used as tracers for oceanic emissions. The results show that the atmospheric mercury mass is mainly loaded in a baseline factor with an on-going decline. Moreover, we exploit temporal variation and wind pattern effects in the measured atmospheric species, the results show that the diurnal variation and seasonality in TGM observed in Mace Head is closely related to other species linked to primary sources and can be explained by transport from continental areas.

show abstract

Gaseous elemental mercury (Hg(0)) in the surface air over the Sea of Japan, the Sea of Okhotsk and the Kuril-Kamchatka sector of the Pacific Ocean in August–September 2017

Cited by 9 publications

References 79 publications

Source apportionment of atmospheric mercury in the remote marine atmosphere: Mace Head GAW station, Irish western coast

Source apportionment of atmospheric mercury in the remote marine atmosphere: Mace Head GAW station, Irish western coast

Atmospheric gaseous elemental mercury and its sea-air evasion fluxes from the Sea of Okhotsk to the South China Sea: results of cruise studies in 2019

Source apportionment of atmospheric mercury in the remote marine atmosphere: Mace Head GAW station, Irish west coast

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