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Istituto sull'inquinamento atmosferico

Torna all'elenco Contributi in atti di convegno anno 2017

Contributo in atti di convegno

Tipo: Abstract in atti di convegno

Titolo: Five-Year Records of Mercury Concentrations Observed at Ground-Based Monitoring Sites in the Framework of the GMOS Global Network

Anno di pubblicazione: 2017

Formato: Elettronico

Autori: Sprovieri Francesca (1), Pirrone Nicola (2), Bencardino Mariantonia (1), D'Amore Francesco (1), Carbone Francesco (1), Cinnirella Sergio (1), Landis Matthew (3), Ebinghaus Ralf (4), Martin Lynwill (5), Munthe John (6), Wangberg Ingvar (6), Artaxo Paulo (7), Barbante Carlo (8), Cairns Warren (9), Vardè Massimiliano (10), Diéguez María (11), Garcia Patricia (11), Dommergue Aurélien (12), Angot Hélène (12), Magand Olivier (12), Skov Henrik (13), Horvat Milena (14), Kotnik Joze (14), Read Katie (15), Neves Luis (16), Sena Fabrizio (17), Mashyanov Nikolay (18), Wip Dennis (19), Feng Xin (20), Zhang Hui (20), Fu Xuewu (20), Ramachandran Ramesh (21), Knoery Joël (22), Gawlik Bernd (23), Obolkin Vladimir (24), Labuschagne Casper (25), Morais Fernando (7), Barbose Henrique (7), Brito Joel (7), Cossa Daniel (26), Weigelt Andreas (27)

Affiliazioni autori: (1) CNR-IIA, Rende, Italia; (2) CNR-IIA, Rome, Italia; (3) US-EPA, NC, USA; (4) Helmholtz-Zentrum, Geesthacht, Germany; (5) Climate and Environ. Res. & Monit., South African Weather Service, Stellenbosch, South Africa; (6) IVL, Göteborg, Sweden; (7) University of Sao Paulo, Sao Paulo, Brazil; (8) University of Venice, Venice, Italia; (9) CNR-IDPA, Venice, Italia; (10) CNR-IIA, Rende; CNR-IDPA, Venezia, Italia; (11) INIBIOMA-CONICET, Bariloche, Argentina; (12) Laboratoire de Glaciologieet Géophysique de l'Environnement, University Grenoble Alpes, Grenoble, France; (13) Department of Environmental Science, Aarhus University, Aarhus, Denmark; (14) Jo?ef Stefan Institute, Ljubljana, Slovenia; (15) NCAS, University of York, York, UK; (16) Cape Verde Observatory, INMG, São Vicente, Cabo Verde; (17) Joint Research Centre, ISPRA (VA), Italy; (18) St. Petersburg State University, St. Petersburg, Russia; (19) Department of Physics, University of Suriname, Paramaribo, Suriname; (20) State Key Lab. of Environ. Geochem., Inst. of Geochemistry, Chinese Academy of Sciences, Guiyang, China; (21) Institute for Ocean Management, Anna University, Chennai, India; (22) LBCM, Ifremer, Centre Atlantique, Nantes, France; (23) Joint Research Centre, Ispra, Italy; (24) Limnological Institute SB RAS, Irkutsk, Russia; (25) Climate and Environ. Res. & Monit., South African Weather Service, Stellenbosch, South Africa; (26) ISTerre Université Grenoble Alpes, Grenoble, France; (27) Federal Maritime and Hydrographic Agency, Hamburg, Germany.

Autori CNR:


Lingua: inglese

Abstract: Long-term monitoring data of ambient mercury (Hg) on a global scale to assess its emission, transport, atmospheric chemistry, and deposition processes is vital to understanding the impact of Hg pollution on the environment. The Global Mercury Observation System (GMOS) started in November 2010 with the overall goal to develop a coordinated global observing system to monitor Hg on a global scale, including a large network of ground-based monitoring stations, ad hoc oceanographic cruises and measurement flights in the troposphere and lower stratosphere. To date, more than 40 ground-based monitoring sites constitute the global network covering many regions where little to no observational data were available before GMOS. This work presents atmospheric Hg concentrations recorded worldwide, analyzing Hg measurement results in terms of temporal trends, seasonality and comparability within the network. Major findings highlighted a clear gradient of atmospheric Hg concentrations between the Northern and Southern Hemispheres, confirming that the gradient observed is mostly driven by local and regional sources, which can be anthropogenic, natural or a combination of both. In order to understand the atmospheric cycling and seasonal depositional characteristics of Hg, wet deposition samples were also collected at 17 selected GMOS monitoring sites providing new insight into baseline concentrations of THg concentrations in precipitation particularly in regions, such as the Southern Hemisphere and Tropical areas where wet deposition were never investigated before, opening the way for additional measurements across the GMOS network and new findings in future modeling studies highlighting the need of integrated measurements in ambient air and rainwater samples to improve our understanding of deposition processes and oxidation mechanisms. These new observations in fact, give scientists and modelers some insight into baseline concentrations of Hg concentrations in air and precipitation with the overarching benefit which clearly consists in the advancement of knowledge about Hg processes on global scale.

Pagine da: 86

Pagine a: 86

Pagine totali: 1

Curatore/i del volume: ICMG

Referee: Sì: Internazionale

Stato della pubblicazione: Published version

Parole chiave:

  • Mercury
  • Atmospheric Hg
  • Hg wet deposition
  • ground-based monitoring sites
  • GMOS

Congresso nome: ICMGP2017 - The 13th International Conference on Mercury as a Global Pollutant

Congresso luogo: Providence, Rhode Island, USA

Congresso data: 16-21/07/2017

Congresso rilevanza: Internazionale

Congresso relazione: Contributo

Altre informazioni: Oral presentation WO-004

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