A dual behavior of primary marine organics

Jurgita Ovadnevaite, Darius Ceburnis, Giovanni Martucci, Jakub Bialek, Ciaran Monahan, Matteo Rinaldi, Maria Cristina Facchini, Colin O'Dowd

Research output: Chapter in Book or Conference Publication/ProceedingConference Publicationpeer-review

Abstract

High-time resolution measurements of primary marine organic sea-spray physico-chemical properties reveal submicron organic marine aerosol plume concentrations peaking at 3.8 μg m-3, moreover, it shows an apparent dichotomous behavior of marine organics in terms of water uptake: specifically sea-spray aerosol enriched in organic matter possesses a low Hydroscopic Growth Factor (HGF∼1.25) while simultaneously having a cloud condensation nucleus/condensation nuclei (CCN/CN) activation efficiency of between 83% at 0.25% supersaturation and 100% at 0.75%. Simultaneous retrieval of Cloud Droplet Number Concentration (CDNC) during primary organic aerosol plumes reveals CDNC concentrations of 350 cm-3 for organic mass concentrations 3-4 μg m-3. It is demonstrated that the retrieved high CDNCs under clean marine conditions can only be explained by organic sea-spray and corroborates the high CCN activation efficiency associated with primary organics. It is postulated that marine hydrogels are responsible for this dichotomous behavior.

Original languageEnglish
Title of host publicationNucleation and Atmospheric Aerosols - 19th International Conference
PublisherAMER INST PHYSICS
Pages714-717
Number of pages4
Volume1527
ISBN (Electronic)0094-243X
ISBN (Print)9780735411524, 0094-243X
DOIs
Publication statusPublished - 1 Jan 2013
Event19th International Conference on Nucleation and Atmospheric Aerosols, ICNAA 2013 - Fort Collins, CO, United States
Duration: 23 Jun 201328 Jun 2013

Publication series

NameAIP Conference Proceedings
Volume1527
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Conference

Conference19th International Conference on Nucleation and Atmospheric Aerosols, ICNAA 2013
Country/TerritoryUnited States
CityFort Collins, CO
Period23/06/1328/06/13

Keywords

  • CCN
  • Hydroscopic Growth Factor
  • Primary marine organics
  • sea-spray physico-chemical properties

Authors (Note for portal: view the doc link for the full list of authors)

  • Authors
  • Ovadnevaite, J;Ceburnis, D;Martucci, G;Bialek, J;Monahan, C;Rinaldi, M;Facchini, MC;O'Dowd, C

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