Peer-Reviewed Journal Details
Mandatory Fields
Ovadnevaite, J,Manders, A,de Leeuw, G,Ceburnis, D,Monahan, C,Partanen, AI,Korhonen, H,O'Dowd, CD
2014
January
Atmospheric Chemistry And Physics
A sea spray aerosol flux parameterization encapsulating wave state
Published
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Optional Fields
PRIMARY MARINE AEROSOL CLOUD CONDENSATION NUCLEI OCEANIC WHITECAP COVERAGE MASS-SPECTROMETER SALT AEROSOL ERROR ESTIMATION BOUNDARY-LAYER WIND-SPEED MACE HEAD IN-SITU
14
1837
1852
A new sea spray source function (SSSF), termed Oceanflux Sea Spray Aerosol or OSSA, was derived based on in-situ sea spray aerosol measurements along with meteorological/physical parameters. Submicron sea spray aerosol fluxes derived from particle number concentration measurements at the Mace Head coastal station, on the west coast of Ireland, were used together with open-ocean eddy correlation flux measurements from the Eastern Atlantic Sea Spray, Gas Flux, and Whitecap (SEASAW) project cruise. In the overlapping size range, the data for Mace Head and SEASAW were found to be in a good agreement, which allowed deriving the new SSSF from the combined dataset spanning the dry diameter range from 15 nm to 6 mu m. The OSSA source function has been parameterized in terms of five lognormal modes and the Reynolds number instead of the more commonly used wind speed, thereby encapsulating important influences of wave height, wind history, friction velocity, and viscosity. This formulation accounts for the different flux relationships associated with rising and waning wind speeds since these are included in the Reynolds number. Furthermore, the Reynolds number incorporates the kinematic viscosity of water, thus the SSSF inherently includes dependences on sea surface temperature and salinity. The temperature dependence of the resulting SSSF is similar to that of other in-situ derived source functions and results in lower production fluxes for cold waters and enhanced fluxes from warm waters as compared with SSSF formulations that do not include temperature effects.
10.5194/acp-14-1837-2014
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