| Literature DB >> 20007897 |
J L Jimenez1, M R Canagaratna, N M Donahue, A S H Prevot, Q Zhang, J H Kroll, P F DeCarlo, J D Allan, H Coe, N L Ng, A C Aiken, K S Docherty, I M Ulbrich, A P Grieshop, A L Robinson, J Duplissy, J D Smith, K R Wilson, V A Lanz, C Hueglin, Y L Sun, J Tian, A Laaksonen, T Raatikainen, J Rautiainen, P Vaattovaara, M Ehn, M Kulmala, J M Tomlinson, D R Collins, M J Cubison, E J Dunlea, J A Huffman, T B Onasch, M R Alfarra, P I Williams, K Bower, Y Kondo, J Schneider, F Drewnick, S Borrmann, S Weimer, K Demerjian, D Salcedo, L Cottrell, R Griffin, A Takami, T Miyoshi, S Hatakeyama, A Shimono, J Y Sun, Y M Zhang, K Dzepina, J R Kimmel, D Sueper, J T Jayne, S C Herndon, A M Trimborn, L R Williams, E C Wood, A M Middlebrook, C E Kolb, U Baltensperger, D R Worsnop.
Abstract
Organic aerosol (OA) particles affect climate forcing and human health, but their sources and evolution remain poorly characterized. We present a unifying model framework describing the atmospheric evolution of OA that is constrained by high-time-resolution measurements of its composition, volatility, and oxidation state. OA and OA precursor gases evolve by becoming increasingly oxidized, less volatile, and more hygroscopic, leading to the formation of oxygenated organic aerosol (OOA), with concentrations comparable to those of sulfate aerosol throughout the Northern Hemisphere. Our model framework captures the dynamic aging behavior observed in both the atmosphere and laboratory: It can serve as a basis for improving parameterizations in regional and global models.Entities:
Year: 2009 PMID： 20007897 DOI： 10.1126/science.1180353
Source DB: PubMed Journal: Science ISSN： 0036-8075 Impact factor: 47.728