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Istituto sull'inquinamento atmosferico

Torna all'elenco Contributi in rivista anno 2017

Contributo in rivista

Tipo: Articolo in rivista

Titolo: Estimating Uncertainty in Global Mercury Emission Source and Deposition Receptor Relationships

Anno di pubblicazione: 2017

Formato: Elettronico

Autori: De Simone, Francesco and Hedgecock, Ian M. and Carbone, Francesco and Cinnirella, Sergio and Sprovieri, Francesca and Pirrone, Nicola

Affiliazioni autori: CNR-Institute of Atmospheric Pollution Research, Division of Rende, UNICAL Polifuzionale, 87036 Rende, Italy CNR-Institute of Atmospheric Pollution Research, Area della Ricerca Roma 1, Via Salaria, 00015 Monterotondo, Italy

Autori CNR:


Lingua: inglese

Abstract: Establishing mercury (Hg) source-receptor (SR) relationship matrices provides a tool to improve the understanding of the geographic relationship between regions of Hg release and its eventual deposition. SR relationship matrices are therefore a useful starting point for the development of policies aimed at reducing the impact of Hg emissions from anthropogenic activities (Hganthr) on sensitive ecosystems and areas potentially at risk of Hg contamination. A global Chemical Transport Model (CTM) has been used to simulate the emission, transport and fate of Hganthr from 12 source regions, considering a range of uncertainty in the modelled chemical and physical processes. This ensemble of simulations gives an estimate of the Hg deposition which derives from each source region, as well as an estimate of the uncertainty of the calculated deposition flux. The uncertainty has been calculated using the bootstrap method to estimate this uncertainty in terms of the normalised confidence interval amplitude of the mean (NCIAM). Within the calculated confidence ranges, for almost all regions the contribution to the Hg deposition flux from remote sources is greater than that from domestic sources. Europe and South Asia, where the contributions are statistically indistinguishable, are exceptions, as is East Asia, with local sources dominating the Hg deposition flux. East Asia is the single most important remote source region for most receptor regions. The results yield such high uncertainties in the deposition flux for many receptor regions that the results are unlikely to be taken into consideration by policy makers. This uncertainty is particularly relevant when considering the "domestic" contribution to regional deposition, highlighting the need for more studies to resolve remaining uncertainties in the atmospheric Hg cycle, and Hganthr emission inventories.

Lingua abstract: inglese


Atmosphere Molecular Diversity Preservation International
Paese di pubblicazione:
Lingua: inglese
ISSN: 2073-4433

Numero volume: 8

Numero fascicolo: 12

DOI: 10.3390/atmos8120236

Referee: Sė: Internazionale

Stato della pubblicazione: Published version

Parole chiave:

  • Mercury
  • Atmospheric Modelling
  • Uncertainty

URL: http://www.mdpi.com/2073-4433/8/12/236

Strutture CNR:

Allegati: Estimating Uncertainty in Global Mercury Emission Source and Deposition Receptor Relationships (application/pdf)
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