The importance of organic aerosol to CCN concentrations and characteristics at a forested site in Colorado

E. J.T. Levin, A. J. Prenni, B. Palm, D. Day, P. Campuzano-Jost, M. D. Petters, S. M. Kreidenweis, P. J. Demott, J. Jimenez, J. N. Smith

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

We measured size-resolved CCN concentrations over an annual cycle and during a summer intensive study at a remote, forested location in Colorado. From these data we derived aerosol hygroscopicity and size-resolved two-component composition. During the summer intensive, aerosol composition was also measured with an aerosol mass spectrometer, and we use these data to confirm hygroscopicity-derived composition. Throughout the study and at all measured sizes, aerosol composition was predominately organic with resulting low hygroscopicity, κave = 0.16 ± 0.08. New particle formation appeared to be an important source of aerosol number and the newly nucleated particles were inferred to be predominately organic.

Original languageEnglish
Title of host publicationNucleation and Atmospheric Aerosols - 19th International Conference
Pages836-838
Number of pages3
DOIs
StatePublished - 2013
Event19th International Conference on Nucleation and Atmospheric Aerosols, ICNAA 2013 - Fort Collins, CO, United States
Duration: Jun 23 2013Jun 28 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
Period06/23/1306/28/13

Keywords

  • Aerosol
  • CCN
  • Kappa
  • New particle formation

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