Modern and historic atmospheric mercury fluxes in both hemispheres: Global and regional mercury cycling implications

2002 ◽  
Vol 16 (4) ◽  
pp. 51-1-51-11 ◽  
Author(s):  
C. H. Lamborg ◽  
W. F. Fitzgerald ◽  
A. W. H. Damman ◽  
J. M. Benoit ◽  
P. H. Balcom ◽  
...  
Keyword(s):  
Atmospheric Mercury ◽  
Mercury Cycling ◽  
Mercury Fluxes

scholarly journals Mercury cycling in the Arctic - does enhanced deposition flux mean net-input?

2008 ◽  
Vol 5 (2) ◽  
pp. 87 ◽  
Author(s):  
Ralf Ebinghaus
Keyword(s):  
Atmospheric Transport ◽  
Atmospheric Mercury ◽  
The Arctic ◽  
Sensitive Period ◽  
Deposition Flux ◽  
Polar Regions ◽  
Mercury Deposition ◽  
Mercury Cycling ◽  
Research Activities ◽  
Physico Chemical

Environmental context. Mercury has unique physico-chemical characteristics that include long-range atmospheric transport, transformation into highly toxic methylmercury species, and the bioaccumulation of these compounds, especially in the marine environment. This has motivated intense international research on mercury as a pollutant of global concern. With respect to Polar regions, scientific interest and research activities were even accelerated after the discovery of the so-called atmospheric mercury depletion events (AMDEs), which are supposed to lead to enhanced mercury deposition flux into these pristine environments in the ecologically very sensitive period in polar spring.

scholarly journals The Role of Climate: 71 ka of Atmospheric Mercury Deposition in the Southern Hemisphere Recorded by Rano Aroi Mire, Easter Island (Chile)

Geosciences ◽  
2018 ◽  
Vol 8 (10) ◽  
pp. 374 ◽  
Author(s):  
Marta Pérez-Rodríguez ◽  
Olga Margalef ◽  
Juan Corella ◽  
Alfonso Saiz-Lopez ◽  
Sergi Pla-Rabes ◽  
...  
Keyword(s):  
Atmospheric Mercury ◽  
Easter Island ◽  
Anthropogenic Sources ◽  
Atmospheric Oxidation ◽  
Main Process ◽  
Mercury Deposition ◽  
Mercury Cycling ◽  
Surface Deposition ◽  
Depositional Processes

The study of mercury accumulation in peat cores provides an excellent opportunity to improve the knowledge on mercury cycling and depositional processes at remote locations far from pollution sources. We analyzed mercury concentrations in 150 peat samples from two cores from Rano Aroi (Easter Island, 27° S) and in selected vegetation samples of present-day flora of the island, in order to characterize the mercury cycling for the last ~71 ka BP. The mercury concentrations showed values ranging between 35 and 200 ng g−1, except for a large maxima (~1000 ng g−1) which occurred at the end of the Last Glacial Maximum (LGM, ~20 ka cal BP) in both peat cores. Low temperatures during the LGM would accelerate the atmospheric oxidation of Hg(0) to divalent mercury that, coupled with higher rainfall during this period, most likely resulted in a very efficient surface deposition of atmospheric mercury. Two exceptional short-lived Hg peaks occurred during the Holocene at 8.5 (350 ng g−1) and 4.7 (1000 ng g−1) ka cal BP. These values are higher than those recorded in most peat records belonging to the industrial period, highlighting that natural factors played a significant role in Hg accumulation—sometimes even more so than anthropogenic sources. Our results suggest that wet deposition, linked to atmospheric oxidation, was the main process controlling the short-lived Hg events, both in the mire and in the catchment soils.

Modern and Historic Atmospheric Mercury Fluxes in Northern Alaska:  Global Sources and Arctic Depletion

2005 ◽  
Vol 39 (2) ◽  
pp. 557-568 ◽  
Author(s):  
William F. Fitzgerald ◽  
Daniel R. Engstrom ◽  
Carl H. Lamborg ◽  
Chun-Mao Tseng ◽  
Prentiss H. Balcom ◽  
...  
Keyword(s):  
Atmospheric Mercury ◽  
Mercury Fluxes ◽  
Northern Alaska

An update of the mercury inventory and atmospheric mercury fluxes to and from Finland

1995 ◽  
Vol 80 (1-4) ◽  
pp. 255-264 ◽  
Author(s):  
Arun B. Mukherjee ◽  
Sally Innanen ◽  
Matti Verta
Keyword(s):  
Atmospheric Mercury ◽  
Mercury Fluxes

Atmospheric Mercury Fluxes in a Southern Boreal Forest and Wetland

2011 ◽  
Vol 223 (3) ◽  
pp. 1171-1182 ◽  
Author(s):  
Katriina Kyllönen ◽  
Hannele Hakola ◽  
Heidi Hellén ◽  
Markku Korhonen ◽  
Matti Verta
Keyword(s):  
Boreal Forest ◽  
Atmospheric Mercury ◽  
Mercury Fluxes
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