A study of new particle formation and growth involving biogenic and trace gas species measured during ACE 1
- Environmental Chemistry Division, Brookhaven National Laboratory, Upton, New York (United States)
- Particle Technology Laboratory, Department of Mechanical Engineering, University of (United States) Minnesota, Minneapolis
- Department of Atmospheric Science, Colorado State University, (United States) Fort Collins
- Research Aviation Facility, National Center for Atmospheric Research, Boulder, Colorado (United States)
Measurements are presented of ambient nanoparticle distributions (2.7 to 10 nm diameter) in regions of high biogenic emissions encountered during the First Aerosol Characterization Experiment (ACE 1), November 15 to December 14, 1995. Large numbers of newly formed nanoparticles were observed directly downwind of penguin colonies on Macquarie Island (54.5thinsp{degree}S, 159.0thinsp{degree}W). In these regions, nanoparticle concentrations were also correlated with sulfuric acid (H{sub 2}SO{sub 4(g)}) gas concentrations. The measurements show that biogenic species, possibly ammonia (NH{sub 3}), either by itself or with H{sub 2}SO{sub 4}, nucleated to form new particles at rates much higher than bimolecular H{sub 2}SO{sub 4}/H{sub 2}O nucleation. Nanoparticle distributions evolved as air was advected away from the island showing clear evidence of growth of the newly formed particles. Observed growth rates were in the range of 2 to 5 nmthinsph{sup {minus}1} and were about a factor of 4 to 17 times higher than the growth by condensing H{sub 2}SO{sub 4(g)} and associated water. The cause for fast growth of the newly formed particles is unknown. {copyright} 1998 American Geophysical Union
- OSTI ID:
- 678754
- Journal Information:
- Journal of Geophysical Research, Vol. 103, Issue D13; Other Information: PBD: Jul 1998
- Country of Publication:
- United States
- Language:
- English
Similar Records
Characterization of submicron particles influenced by mixed biogenic and anthropogenic emissions using high-resolution aerosol mass spectrometry: results from CARES
Nanoparticle Nucleation Is Termolecular in Metal and Involves Hydrogen: Evidence for a Kinetically Effective Nucleus of Three {Ir 3 H 2 x ·P 2 W 15 Nb 3 O 62 } 6– in Ir(0) n Nanoparticle Formation From [(1,5-COD)Ir I ·P 2 W 15 Nb 3 O 62 ] 8– Plus Dihydrogen