dc.contributor.author | Gantt, B. | |
dc.contributor.author | Meskhidze, N. | |
dc.contributor.author | Facchini, M. C. | |
dc.contributor.author | Rinaldi, M. | |
dc.contributor.author | Ceburnis, D. | |
dc.contributor.author | O'Dowd, C. D. | |
dc.date.accessioned | 2018-09-20T16:08:49Z | |
dc.date.available | 2018-09-20T16:08:49Z | |
dc.date.issued | 2011-08-30 | |
dc.identifier.citation | Gantt, B. Meskhidze, N.; Facchini, M. C.; Rinaldi, M.; Ceburnis, D.; O'Dowd, C. D. (2011). Wind speed dependent size-resolved parameterization for the organic mass fraction of sea spray aerosol. Atmospheric Chemistry and Physics 11 (16), 8777-8790 | |
dc.identifier.issn | 1680-7324 | |
dc.identifier.uri | http://hdl.handle.net/10379/11583 | |
dc.description.abstract | For oceans to be a significant source of primary organic aerosol (POA), sea spray aerosol (SSA) must be highly enriched with organics relative to the bulk seawater. We propose that organic enrichment at the air-sea interface, chemical composition of seawater, and the aerosol size are three main parameters controlling the organic mass fraction of sea spray aerosol (OMSSA). To test this hypothesis, we developed a new marine POA emission function based on a conceptual relationship between the organic enrichment at the air-sea interface and surface wind speed. The resulting parameterization is explored using aerosol chemical composition and surface wind speed from Atlantic and Pacific coastal stations, and satellite-derived ocean concentrations of chlorophyll-a, dissolved organic carbon, and particulate organic carbon. Of all the parameters examined, a multi-variable logistic regression revealed that the combination of 10 m wind speed and surface chlorophyll-a concentration ([Chl-a]) are the most consistent predictors of OMSSA. This relationship, combined with the published aerosol size dependence of OMSSA, resulted in a new parameterization for the organic mass fraction of SSA. Global emissions of marine POA are investigated here by applying this newly-developed relationship to existing sea spray emission functions, satellite-derived [Chl-a], and modeled 10m winds. Analysis of model simulations shows that global annual sub-micron marine organic emission associated with sea spray is estimated to be from 2.8 to 5.6 TgC yr(-1). This study provides additional evidence that marine primary organic aerosols are a globally significant source of organics in the atmosphere. | |
dc.publisher | Copernicus GmbH | |
dc.relation.ispartof | Atmospheric Chemistry and Physics | |
dc.rights | Attribution-NonCommercial-NoDerivs 3.0 Ireland | |
dc.rights.uri | https://creativecommons.org/licenses/by-nc-nd/3.0/ie/ | |
dc.subject | primary marine aerosol | |
dc.subject | cloud-climate interactions | |
dc.subject | experiment ace 1 | |
dc.subject | surface microlayer | |
dc.subject | global distribution | |
dc.subject | coastal aerosol | |
dc.subject | boundary-layer | |
dc.subject | carbon content | |
dc.subject | ocean | |
dc.subject | matter | |
dc.title | Wind speed dependent size-resolved parameterization for the organic mass fraction of sea spray aerosol | |
dc.type | Article | |
dc.identifier.doi | 10.5194/acp-11-8777-2011 | |
dc.local.publishedsource | http://doi.org/10.5194/acp-11-8777-2011 | |
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