Citeable URL: https://ir.library.oregonstate.edu/concern/articles/5999n504c

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Attribute Name	Values
Creator	Cziczo, Daniel J. Froyd, Karl D. Hoose, Corinna Jensen, Eric J. Diao, Minghui Zondlo, Mark A. Smith, Jessica B. Twohy, Cynthia H. Murphy, Daniel M.
Abstract	Formation of cirrus clouds depends on the availability of ice nuclei to begin condensation of atmospheric water vapor. Although it is known that only a small fraction of atmospheric aerosols are efficient ice nuclei, the critical ingredients that make those aerosols so effective have not been established. We have determined in situ the composition of the residual particles within cirrus crystals after the ice was sublimated. Our results demonstrate that mineral dust and metallic particles are the dominant source of residual particles, whereas sulfate and organic particles are underrepresented, and elemental carbon and biological materials are essentially absent. Further, composition analysis combined with relative humidity measurements suggests that heterogeneous freezing was the dominant formation mechanism of these clouds.
Resource Type	Article
DOI	https://doi.org/10.1126/science.1234145
Date Available	2013-07-15T15:47:18+00:00
Date Issued	2013-05-09
Citation	Cziczo, D. J., Froyd, K. D., Hoose, C., Jensen, E. J., Diao, M., Zondlo, M. A., . . . Murphy, D. M. (2013). Clarifying the dominant sources and mechanisms of cirrus cloud formation. Science (New York, N.Y.), 340(6138), 1320-1324. doi:10.1126/science.1234145
Journal Title	Science
Journal Volume	340
Journal Issue/Number	6138
Keyword	Ice nucleation Nuclei Biological particles Mixed phase aerosols Lead Dust
Rights Statement	Copyright Not Evaluated
Funding Statement (additional comments about funding)	M.A.Z. acknowledges support from NSF AGS-0840732 and AGS-1036275, M.D. acknowledges a NASA Earth and Space Science Graduate Fellowship, and C.H.T. acknowledges support from the NASA Radiation Sciences Program award numbers NNX07AL11G and NNX08AH57G. This research was supported by the NASA Earth Science Division Atmospheric Composition program award number NNH11AQ58UI.
Publisher	American Association for the Adnvancement of Science
Peer Reviewed	Yes
Language	English [eng]
Replaces	http://hdl.handle.net/1957/40368
Additional Information	description.provenance : Submitted by Deborah Campbell (deborah.campbell@oregonstate.edu) on 2013-07-15T15:47:18Z No. of bitstreams: 2 TwohyCynthiaHCEOASClarifyingDominantSources.pdf: 1288094 bytes, checksum: 4b3603e5943d9d860e5b000c5dbf51cd (MD5) TwohyCynthiaHCEOASClarifyingDominantSourcesSupp.pdf: 887981 bytes, checksum: ee563f4e487c6a7292d90d63cec73be6 (MD5) description.provenance : Made available in DSpace on 2013-07-15T15:47:18Z (GMT). No. of bitstreams: 2 TwohyCynthiaHCEOASClarifyingDominantSources.pdf: 1288094 bytes, checksum: 4b3603e5943d9d860e5b000c5dbf51cd (MD5) TwohyCynthiaHCEOASClarifyingDominantSourcesSupp.pdf: 887981 bytes, checksum: ee563f4e487c6a7292d90d63cec73be6 (MD5) Previous issue date: 2013-05-09

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