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dc.contributor.advisorKnopf, Daniel Aen_US
dc.contributor.authorRigg, Yannicken_US
dc.contributor.otherDepartment of Marine and Atmospheric Scienceen_US
dc.date.accessioned2013-05-22T17:35:28Z
dc.date.available2013-05-22T17:35:28Z
dc.date.issued1-Dec-11en_US
dc.date.submitted11-Decen_US
dc.identifierRigg_grad.sunysb_0771M_10817en_US
dc.identifier.urihttp://hdl.handle.net/1951/59839
dc.description62 pg.en_US
dc.description.abstractBiomass burning is a major source of water soluble and water insoluble organic compounds in the atmosphere. These compounds have the potential to form ice via homogeneous and heterogeneous mechanisms, both of which are involved in the formation of cirrus clouds with subsequent effects on the global radiative budget. Aqueous levoglucosan/(NH4)2SO4 droplets of mass ratio 10:1, 1:1, 1:5, and 1:10 and aqueous multi component organic droplets with and without (NH4)2SO4 serve as surrogates of water soluble organic biomass compounds to be examined for homogeneous ice nucleation. Pahokee Peat and Leonardite serve as sur- rogates of aerosols composed of HULIS, employed for immersion mode heterogeneous ice nucleation. Homogeneous and heterogeneous freezing and melting temperatures were experi- mentally obtained for all particle systems over a water activity range of 1.0 - 0.8. Subsequent homogeneous and heterogeneous ice nucleation rates were derived and analyzed based on water activity based theory. Contact angles were derived for the two ice nuclei at atmospher- ically relevant conditions. Cumulative and differential freezing spectra are calculated from freezing data for the two ice nuclei. Atmospheric implications are also discussed.en_US
dc.description.sponsorshipStony Brook University Libraries. SBU Graduate School in Department of Marine and Atmospheric Science. Charles Taber (Dean of Graduate School).en_US
dc.formatElectronic Resourceen_US
dc.language.isoen_USen_US
dc.publisherThe Graduate School, Stony Brook University: Stony Brook, NY.en_US
dc.subject.lcshEnvironmental scienceen_US
dc.titleHomogenous and Heterogeneous Ice Nucleation from Biomass Burning Aerosol: Freezing Temperatures and Nucleation Ratesen_US
dc.typeThesisen_US
dc.description.advisorAdvisor(s): Knopf, Daniel A. Committee Member(s): Mak, John E; Aller, Josephine Yen_US
dc.mimetypeApplication/PDFen_US


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