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Urban background aerosols: negative correlations of particle modes and fragmentation mechanism

Gramotnev, Galina, Madl, Pierre, Gramotnev, Dmitri, & Burchill, Michael J. (2007) Urban background aerosols: negative correlations of particle modes and fragmentation mechanism. Geophysical Research Letters, 34(L11811).

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Abstract

We demonstrate new powerful methods of statistical analysis of atmospheric aerosols on the example of urban background aerosol in the Brisbane area, Australia. It is shown that even in the absence of notable features on the size distribution, it is still possible to identify distinct particles modes and analyze their mutual interactions and transformations. The obtained unique anti-symmetric correlation patterns between particle modes may serve as fingerprints of particular evolutionary processes in the background aerosols. The obtained results suggest that thermal fragmentation of nano-particles may be one of the major physical mechanisms shaping urban background aerosols. In particular, based on the fragmentation theorem, we demonstrate possible existence of substantially different time scales for fragmentation of atmospheric aerosols. The proposed approaches and obtained results may also be important for the analysis of different types of atmospheric aerosols on local, regional and global scales.

Impact and interest:

1 citations in Scopus
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1 citations in Web of Science®

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Full-text downloads:

114 since deposited on 19 Mar 2007
8 in the past twelve months

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ID Code: 6584
Item Type: Journal Article
Keywords: Urban aerosols, Statistical analysis, Multi, channel correlations, Sources of particles, Fragmentation of nanoparticles
DOI: 10.1029/2006GL029109
ISSN: 0094-8276
Subjects: Australian and New Zealand Standard Research Classification > MATHEMATICAL SCIENCES (010000) > STATISTICS (010400) > Stochastic Analysis and Modelling (010406)
Australian and New Zealand Standard Research Classification > PHYSICAL SCIENCES (020000) > OTHER PHYSICAL SCIENCES (029900) > Physical Sciences not elsewhere classified (029999)
Australian and New Zealand Standard Research Classification > EARTH SCIENCES (040000) > ATMOSPHERIC SCIENCES (040100) > Atmospheric Sciences not elsewhere classified (040199)
Australian and New Zealand Standard Research Classification > MATHEMATICAL SCIENCES (010000) > STATISTICS (010400) > Applied Statistics (010401)
Divisions: Past > QUT Faculties & Divisions > Faculty of Science and Technology
Copyright Owner: Copyright 2007 American Geophysical Union
Copyright Statement: Reproduced in accordance with the copyright policy of the publisher.
Deposited On: 19 Mar 2007
Last Modified: 29 Feb 2012 23:38

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