J 2012

Long-term trends of continental scale PCB patterns studied using a global atmosphere-ocean general circulation model

STEMMLER, I. a Gerhard LAMMEL

Základní údaje

Originální název

Long-term trends of continental scale PCB patterns studied using a global atmosphere-ocean general circulation model

Autoři

STEMMLER, I. (276 Německo) a Gerhard LAMMEL (276 Německo, garant, domácí)

Vydání

Environmental Science and Pollution Research, Heidelberg, Springer, 2012, 0944-1344

Další údaje

Jazyk

angličtina

Typ výsledku

Článek v odborném periodiku

Obor

10511 Environmental sciences

Stát vydavatele

Německo

Utajení

není předmětem státního či obchodního tajemství

Impakt faktor

Impact factor: 2.618

Kód RIV

RIV/00216224:14310/12:00060997

Organizační jednotka

Přírodovědecká fakulta

UT WoS

000306123000012

Klíčová slova anglicky

Polychlorinated biphenyls; Trans-Pacific transport; Long-range transport; Inter-continental transport; Persistent organic pollutants; Modelling

Štítky

Změněno: 10. 4. 2013 20:01, Ing. Andrea Mikešková

Anotace

V originále

Continental-scale distribution and inter-continental transport of four polychlorinated biphenyl (PCB) congeners (28, 101, 153, 180) from 1950 to 2010 were studied using the global multicompartment chemistry transport model MPI-MCTM. Following identical primary emissions for all PCB congeners into air, most of the burden is stored in terrestrial (soil and vegetation) compartments. Thereby, PCB-28, PCB-101 and PCB-153 show a shift of the soil burden maxima from source to remote regions. This shift is downwind with regard to the westerlies for Eurasia and upwind for North America and more prominent for the lighter PCBs than for PCB-153 or PCB-180. In meridional direction, all congeners' distributions underwent a northward migration in Eurasia and North America since the 1950s. Inter-continental transport from Eurasian sources accounts largely for contamination of Alaska and British Columbia and determines the migration of the PCB distribution in soil in North America. Trans-Pacific transport occurs mainly in the gas phase in boreal winter (December-January-February) at 3-4 km altitude and is on a multi-year time scale strongly linked to the atmospheric pressure systems over the Pacific. Inter-continental transport of the lighter, more volatile PCBs is more efficient than for the heavier PCBs.

Návaznosti

ED0001/01/01, projekt VaV
Název: CETOCOEN