scholarly journals Springtime accumulation of atmospheric mercury in polar ecosystems

2004 ◽  
Vol 121 ◽  
pp. 195-208 ◽  
Author(s):  
R. Ebinghaus ◽  
C. Temme ◽  
S. E. Lindberg ◽  
K. J. Scott
Keyword(s):  
Atmospheric Mercury ◽  
Polar Ecosystems

scholarly journals Overview of mercury measurements in the Antarctic troposphere

2009 ◽  
Vol 9 (6) ◽  
pp. 26673-26695 ◽  
Author(s):  
A. Dommergue ◽  
F. Sprovieri ◽  
N. Pirrone ◽  
R. Ebinghaus ◽  
S. Brooks ◽  
...  
Keyword(s):  
Reaction Rate Constant ◽  
Atmospheric Mercury ◽  
Water Soluble ◽  
The Arctic ◽  
Polar Regions ◽  
Priority List ◽  
Polar Ecosystems ◽  
Complex Processes ◽  
Modelling Studies ◽  
The Antarctic

Abstract. Polar ecosystems are considered to be the last pristine environments of the Earth relatively uninfluenced by human activities. Antarctica in particular, compared to the Arctic is considered to be even less affected by any kind of anthropogenic influences. Once contaminants reach the polar regions, their lifetime in the troposphere depends on local removal processes. Atmospheric mercury, in particular, has unique characteristics that include long-range transport to polar regions and the transformation to more toxic and water-soluble compounds that may potentially become bioavailable. These chemical-physical properties have given mercury on the priority list of an increasing number of international, European and national conventions and agreements aimed at the protection of the ecosystems including human health (i.e., GEO, UNEP, AMAP, UN-ECE, HELCOM, OSPAR) thus stimulating a significant amount of research including measurements of Hg0 reaction rate constant with atmospheric oxidants, experimental and modelling studies in order to understand the cycling of Hg in polar regions and its impact to these ecosystems. Special attention in terms of contamination of polar regions, is paid to the consequences of the springtime phenomena, referred to as ''atmospheric mercury depletion event'' (AMDE), during which elemental gaseous mercury (GEM or Hg0) through a series of photochemically-initiated reactions involving halogens, may be converted to a reactive form that may accumulate in polar ecosystems. The discovery of the AMDE, first noted in the Arctic, has also been observed at both poles and was initially considered to result in an important net input of atmospheric Hg into the polar surfaces. However, recent studies point out that complex processes take place after deposition that may result in less significant net-inputs from the atmosphere since a fraction, sometimes significant of deposited Hg may be recycled. Therefore, the contribution of this unique reactivity occurring in polar atmospheres to the global budget of atmospheric Hg and the role played by snow and ice surfaces of these regions are important issues. This paper presents a review of atmospheric mercury studies conducted in the Antarctic troposphere, both at coastal locations and on the Antarctic Plateau since 1985. Our current understanding of atmospheric reactivity in this region is also presented.

Rapidly changing coal-related city-level atmospheric mercury emissions and their driving forces

2021 ◽  
pp. 125060
Author(s):  
Yaqin Guo ◽  
Lin Xiao ◽  
Bin Chen ◽  
Zhujuan Wu ◽  
Huanxin Chen ◽  
...  
Keyword(s):  
Driving Forces ◽  
Atmospheric Mercury ◽  
Mercury Emissions

Impact of biological crusts on soil formation in polar ecosystems

Geoderma ◽  
2021 ◽  
Vol 401 ◽  
pp. 115340
Author(s):  
Alberto Agnelli ◽  
Giuseppe Corti ◽  
Luisa Massaccesi ◽  
Stefano Ventura ◽  
Luigi P. D'Acqui
Keyword(s):  
Soil Formation ◽  
Polar Ecosystems

Lichen and soil as indicators of an atmospheric mercury contamination in the vicinity of a chlor-alkali plant (Grenoble, France)

2012 ◽  
Vol 13 (1) ◽  
pp. 178-183 ◽  
Author(s):  
Sylvain Grangeon ◽  
Stéphane Guédron ◽  
Juliette Asta ◽  
Géraldine Sarret ◽  
Laurent Charlet
Keyword(s):  
Atmospheric Mercury ◽  
Mercury Contamination

scholarly journals Lidar measurements of atmospheric mercury

1990 ◽  
Author(s):  
Hans Edner ◽  
Gregory W. Faris ◽  
Paer Ragnarsson ◽  
Anna L. Sunesson ◽  
Sune Svanberg
Keyword(s):  
Atmospheric Mercury ◽  
Lidar Measurements

Source apportionment of atmospheric mercury pollution in China using the GEOS-Chem model

2014 ◽  
Vol 190 ◽  
pp. 166-175 ◽  
Author(s):  
Long Wang ◽  
Shuxiao Wang ◽  
Lei Zhang ◽  
Yuxuan Wang ◽  
Yanxu Zhang ◽  
...  
Keyword(s):  
Source Apportionment ◽  
Atmospheric Mercury ◽  
Mercury Pollution

400-Year Record of Atmospheric Mercury from Tree-Rings in Northwestern Canada

2018 ◽  
Vol 52 (17) ◽  
pp. 9625-9633 ◽  
Author(s):  
Sydney P. Clackett ◽  
Trevor J. Porter ◽  
Igor Lehnherr
Keyword(s):  
Tree Rings ◽  
Atmospheric Mercury
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