Physics
Scientific paper
Feb 2008
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008georl..3503818d&link_type=abstract
Geophysical Research Letters, Volume 35, Issue 3, CiteID L03818
Physics
56
Atmospheric Processes: Clouds And Aerosols, Atmospheric Composition And Structure: Cloud Physics And Chemistry, Atmospheric Composition And Structure: Aerosols And Particles (0345, 4801, 4906)
Scientific paper
Cloud droplets form by nucleation on atmospheric aerosol particles. Populations of such particles invariably contain organic material, a major source of which is thought to be condensation of photo-oxidation products of biogenic volatile organic compounds (VOCs). We demonstrate that smog chamber studies of the formation of such biogenic secondary organic aerosol (SOA) formed during photo-oxidation must be conducted at near atmospheric concentrations to yield atmospherically representative particle composition, hygroscopicity and cloud-forming potential. Under these conditions, the hygroscopicity measured at 95% relative humidity can be used reliably to predict the CCN activity of the SOA particles by assuming droplet surface tension of pure water. We also show that the supersaturation required to activate a given size of particle decreases with age.
Alfarra Rami M.
Baltensperger Urs
Dommen Josef
Duplissy J.
Good N.
No associations
LandOfFree
Cloud forming potential of secondary organic aerosol under near atmospheric conditions does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Cloud forming potential of secondary organic aerosol under near atmospheric conditions, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Cloud forming potential of secondary organic aerosol under near atmospheric conditions will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1321253