title: Evolution of organic aerosols in the atmosphere.
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.
authors.affiliation: Cooperative Institute for Research in the Environmental Sciences and Department of Chemistry and Biochemistry, University of Colorado, Boulder, CO, USA. jose.jimenez@colorado.edu
authors.forename: J L
authors.initials: JL
authors.lastname: Jimenez
authors.forename: M R
authors.initials: MR
authors.lastname: Canagaratna
authors.forename: N M
authors.initials: NM
authors.lastname: Donahue
authors.forename: A S H
authors.initials: AS
authors.lastname: Prevot
authors.forename: Q
authors.initials: Q
authors.lastname: Zhang
authors.forename: J H
authors.initials: JH
authors.lastname: Kroll
authors.forename: P F
authors.initials: PF
authors.lastname: DeCarlo
authors.forename: J D
authors.initials: JD
authors.lastname: Allan
authors.forename: H
authors.initials: H
authors.lastname: Coe
authors.forename: N L
authors.initials: NL
authors.lastname: Ng
authors.forename: A C
authors.initials: AC
authors.lastname: Aiken
authors.forename: K S
authors.initials: KS
authors.lastname: Docherty
authors.forename: I M
authors.initials: IM
authors.lastname: Ulbrich
authors.forename: A P
authors.initials: AP
authors.lastname: Grieshop
authors.forename: A L
authors.initials: AL
authors.lastname: Robinson
authors.forename: J
authors.initials: J
authors.lastname: Duplissy
authors.forename: J D
authors.initials: JD
authors.lastname: Smith
authors.forename: K R
authors.initials: KR
authors.lastname: Wilson
authors.forename: V A
authors.initials: VA
authors.lastname: Lanz
authors.forename: C
authors.initials: C
authors.lastname: Hueglin
authors.forename: Y L
authors.initials: YL
authors.lastname: Sun
authors.forename: J
authors.initials: J
authors.lastname: Tian
authors.forename: A
authors.initials: A
authors.lastname: Laaksonen
authors.forename: T
authors.initials: T
authors.lastname: Raatikainen
authors.forename: J
authors.initials: J
authors.lastname: Rautiainen
authors.forename: P
authors.initials: P
authors.lastname: Vaattovaara
authors.forename: M
authors.initials: M
authors.lastname: Ehn
authors.forename: M
authors.initials: M
authors.lastname: Kulmala
authors.forename: J M
authors.initials: JM
authors.lastname: Tomlinson
authors.forename: D R
authors.initials: DR
authors.lastname: Collins
authors.forename: M J
authors.initials: MJ
authors.lastname: Cubison
authors.forename: E J
authors.initials: EJ
authors.lastname: Dunlea
authors.forename: J A
authors.initials: JA
authors.lastname: Huffman
authors.forename: T B
authors.initials: TB
authors.lastname: Onasch
authors.forename: M R
authors.initials: MR
authors.lastname: Alfarra
authors.forename: P I
authors.initials: PI
authors.lastname: Williams
authors.forename: K
authors.initials: K
authors.lastname: Bower
authors.forename: Y
authors.initials: Y
authors.lastname: Kondo
authors.forename: J
authors.initials: J
authors.lastname: Schneider
authors.forename: F
authors.initials: F
authors.lastname: Drewnick
authors.forename: S
authors.initials: S
authors.lastname: Borrmann
authors.forename: S
authors.initials: S
authors.lastname: Weimer
authors.forename: K
authors.initials: K
authors.lastname: Demerjian
authors.forename: D
authors.initials: D
authors.lastname: Salcedo
authors.forename: L
authors.initials: L
authors.lastname: Cottrell
authors.forename: R
authors.initials: R
authors.lastname: Griffin
authors.forename: A
authors.initials: A
authors.lastname: Takami
authors.forename: T
authors.initials: T
authors.lastname: Miyoshi
authors.forename: S
authors.initials: S
authors.lastname: Hatakeyama
authors.forename: A
authors.initials: A
authors.lastname: Shimono
authors.forename: J Y
authors.initials: JY
authors.lastname: Sun
authors.forename: Y M
authors.initials: YM
authors.lastname: Zhang
authors.forename: K
authors.initials: K
authors.lastname: Dzepina
authors.forename: J R
authors.initials: JR
authors.lastname: Kimmel
authors.forename: D
authors.initials: D
authors.lastname: Sueper
authors.forename: J T
authors.initials: JT
authors.lastname: Jayne
authors.forename: S C
authors.initials: SC
authors.lastname: Herndon
authors.forename: A M
authors.initials: AM
authors.lastname: Trimborn
authors.forename: L R
authors.initials: LR
authors.lastname: Williams
authors.forename: E C
authors.initials: EC
authors.lastname: Wood
authors.forename: A M
authors.initials: AM
authors.lastname: Middlebrook
authors.forename: C E
authors.initials: CE
authors.lastname: Kolb
authors.forename: U
authors.initials: U
authors.lastname: Baltensperger
authors.forename: D R
authors.initials: DR
authors.lastname: Worsnop