Chemical fluxes in North-east Atlantic air

An alternative method for the estimation of chemical aerosol fluxes, based on a vertical concentration gradient measurement, has been developed and executed at the coastal research station in Mace Head, Ireland. Total gravimetric PM1.0 mass, sea salt and water insoluble organic carbon (WINSOC) conce...

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Bibliographic Details
Main Authors: Čeburnis, Darius, O'Dowd, Colin D., Facchini, Maria Cristina, Emblico, Lorenza, Decesari, Stefano, Šakalys, Jonas, Jennings, S.G.
Format: Article in Journal/Newspaper
Language:English
Published: 2007
Subjects:
Aerosol
North Atlantic
Concentration gradient
Flux
Sulphate
Sea salt
Water soluble organic carbon
Water insoluble organic carbon
Mace
North East Atlantic
Online Access:http://ftmc.lvb.lt/FTMC:ELABAPDB6055608&prefLang=en_US
Description
Summary:An alternative method for the estimation of chemical aerosol fluxes, based on a vertical concentration gradient measurement, has been developed and executed at the coastal research station in Mace Head, Ireland. Total gravimetric PM1.0 mass, sea salt and water insoluble organic carbon (WINSOC) concentration profiles showed a net production, while nssSO4 and water soluble organic carbon (WSOC) concentration profiles showed a net removal at the surface. It was concluded that WSOC was predominantly of secondary origin, while WINSOC was predominantly of primary origin. Potential influence of the surf zone emissions was limited to 5–20% and the measured fluxes were characteristic of the coastal zone of up to 5 km. Sea salt concentration and mass flux relationships with the wind speed were established and fitted with power function (C = a*U b). A comparison with the mass flux, derived from eddy correlation measurements yielded good agreement.

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