A model mechanism to describe oxidation of monoterpenes leading to secondary organic aerosol -: 1.: α-pinene and β-pinene

被引:34
作者
Barthelmie, RJ [1 ]
Pryor, SC
机构
[1] Indiana Univ, Dept Geog, Atmospher Sci Program, Bloomington, IN 47405 USA
[2] Riso Natl Lab, Dept Wind Energy & Atmospher Phys, DK-4000 Roskilde, Denmark
关键词
D O I
10.1029/1999JD900382
中图分类号
P4 [大气科学(气象学)];
学科分类号
0706 ; 070601 ;
摘要
A model mechanism to describe the oxidation of alpha-pinene and beta-pinene has been developed based on the chemistry of lower alkenes and smog chamber studies of gas and aerosol phase products of monoterpene oxidation described in the literature. The mechanism is designed to replace single-step aerosol yield or fractional aerosol coefficient approaches currently used in numerical atmospheric chemistry transport models. The mechanism predicts the concentrations of condensable products which are partitioned between gas and aerosol phases based on the absorption approach of Odum et al. [1996] and Hoffmann et al. [1997] but uses a six-product rather than a two-product model. Model-predicted aerosol concentrations and yields are similar to those observed in the smog chamber, and the timing of aerosol formation is in reasonable accord with that observed, The monoterpene mechanism is also used to develop aerosol "isopleths" based on NOx and alpha-pinene concentrations and temperatures representative of those found in the atmosphere.
引用
收藏
页码:23657 / 23669
页数:13
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