The oceanic biological pump modulates the atmospheric transport of persistent organic pollutants to the Arctic

Cristóbal Galbán-Malagón, Naiara Berrojalbiz, María José Ojeda, Jordi Dachs

Resultado de la investigación: Contribución a una revistaArtículo

79 Citas (Scopus)

Resumen

Semivolatile persistent organic pollutants have the potential to reach remote environments, such as the Arctic Ocean, through atmospheric transport and deposition. Here we show that this transport of polychlorinated biphenyls to the Arctic Ocean is strongly retarded by the oceanic biological pump. A simultaneous sampling of atmospheric, seawater and plankton samples was performed in July 2007 in the Greenland Current and Atlantic sector of the Arctic Ocean. The atmospheric concentrations declined during atmospheric transport over the Greenland Current with estimated half-lives of 1-4 days. These short half-lives can be explained by the high air-to-water net diffusive flux, which is similar in magnitude to the estimated settling fluxes in the water column. Therefore, the decrease of atmospheric concentrations is due to sequestration of atmospheric polychlorinated biphenyls by enhanced air-water diffusive fluxes driven by phytoplankton uptake and organic carbon settling fluxes (biological pump).

Idioma originalInglés
Número de artículo862
PublicaciónNature Communications
Volumen3
DOI
EstadoPublicada - 2012

Áreas temáticas de ASJC Scopus

  • Química (todo)
  • Bioquímica, genética y biología molecular (todo)
  • Física y astronomía (todo)

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