Informace o publikaci

Evidence of the return of past pollution in the ocean: A model study

Logo poskytovatele
Logo poskytovatele
Autoři

STEMMLER Irene LAMMEL Gerhard

Rok publikování 2013
Druh Článek v odborném periodiku
Časopis / Zdroj Geophysical Research Letters
Fakulta / Pracoviště MU

Přírodovědecká fakulta

Citace
Doi http://dx.doi.org/10.1002/grl.50248
Obor Vědy o atmosféře, meteorologie
Klíčová slova PERSISTENT ORGANIC POLLUTANTS; GENERAL-CIRCULATION MODEL; DEEP-SEA FISH; CLIMATE MODEL; TIME TRENDS; PART I; ORGANOCHLORINES; ATLANTIC; CONTAMINATION; DISTRIBUTIONS
Popis Chemical contamination by persistent organic pollutants (POPs) is one of the anthropogenic stressors for the deep sea. Here we use a coupled multi-compartment chemistry-transport model to simulate long-term transports and fate of polychlorinated biphenyls (PCBs) and dichlorodiphenyltrichloroethane (DDT). We show that the pollution signal received by the surface waters through atmospheric deposition is propagating downward and that ocean currents can act as a secondary source of POPs. Besides considerable time lags with respect to the year of peak emission, we find in some areas, e.g., in the western and eastern North Atlantic temporal bimodal exposure toward the pollutants of mid-level and deep waters (200-1500 m). This is caused by vertical and horizontal transport through advection diffusion and particle sinking. We suggest that the combination of the same processes will lead to a re-rise of exposure in other sea regions in the future, including where deep-sea fisheries take place.
Související projekty:

Používáte starou verzi internetového prohlížeče. Doporučujeme aktualizovat Váš prohlížeč na nejnovější verzi.

Další info