Article Dans Une Revue Environmental Pollution Année : 2024

Patterns and trends of atmospheric mercury in the GMOS network: Insights based on a decade of measurements

Mariantonia Bencardino
Francesco D’amore
Lorenzo Angiuli
  • Fonction : Auteur
María Diéguez
Giulio Esposito
Kateřina Komínková
  • Fonction : Auteur
Valentino Mannarino
  • Fonction : Auteur
Lynwill Martin
Luis Mendes Neves
  • Fonction : Auteur
Nikolay Mashyanov
Peter Nelson
Claus Norstrom
  • Fonction : Auteur
Katie Read
Sergey Sholupov
  • Fonction : Auteur
Gabriela Vítková
Sergio Cinnirella

Résumé

The Global Mercury Observation System (GMOS) network, initially a five-year project (2010-2015) funded by the European Commission, continued as a GEO Flagship program to support the Global Observation System for Mercury (GOS4M). GMOS was envisioned as a coordinated global observing system to monitor atmospheric mercury (Hg) on a global scale, to support and evaluate the effective implementation of the Minamata Convention on Mercury (MCM). Twenty-eight ground-based stations have participated in monitoring activities, following GMOS sampling protocols and related data quality control management. The GMOS network provides representative coverage of all latitudes, from the Northern Hemisphere to the Southern Hemisphere including the Arctic Circle, Antarctica, and the Tropical Zone. This work presents atmospheric Hg data, available as Total Gaseous Mercury (TGM) or Gaseous Elemental Mercury (GEM) concentrations, recorded within the GMOS network from 2011 to 2020. TGM/GEM concentrations were analysed in terms of their variability along latitudinal areas, considering their comparability, temporal trends and patterns. The main results confirmed a clear gradient of TGM/GEM concentrations between the northern (1.58 +/- 0.31 ng/m(3)) and southern (0.97 +/- 0.14 ng/m(3)) hemispheres. Decreasing trends in TGM/GEM levels were found to be strongly significant only for selected remote stations with at least 5 years of data coverage. Seasonality in atmospheric TGM/GEM concentrations was observed to increase with latitude and is greater at inland sites than at coastal sites.

Fichier principal
Vignette du fichier
1-s2.0-S0269749124018219-main.pdf (4.47 Mo) Télécharger le fichier
Origine Fichiers éditeurs autorisés sur une archive ouverte
Licence

Dates et versions

hal-04776658 , version 1 (12-11-2024)

Licence

Identifiants

Citer

Mariantonia Bencardino, Francesco D’amore, Hélène Angot, Lorenzo Angiuli, Yann Bertrand, et al.. Patterns and trends of atmospheric mercury in the GMOS network: Insights based on a decade of measurements. Environmental Pollution, 2024, 363, pp.125104. ⟨10.1016/j.envpol.2024.125104⟩. ⟨hal-04776658⟩
836 Consultations
595 Téléchargements

Altmetric

Partager

  • More