The ambient concentrations of biogenic hydrocarbons at a northern European, boreal site

被引:60
作者
Hakola, H [1 ]
Laurila, T [1 ]
Rinne, J [1 ]
Puhto, K [1 ]
机构
[1] Finnish Meteorol Inst, FIN-00810 Helsinki, Finland
关键词
isoprene; monoterpenes; 1,8-cineol; biogenic VOC; effective temperature sum (ETS); ambient concentrations;
D O I
10.1016/S1352-2310(00)00192-8
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
Concentrations of monoterpenes, 1,8-cineol and light hydrocarbons were measured in Potsonvaara, Ilomantsi, Eastern Finland during two growing seasons in 1997 and 1998. The measuring site was located on the top of a hill, outside a mixed forest. The monthly average summer concentrations of isoprene were 0.3-1.7 ppbC and monoterpenes and 1,8-cineol together 1.6-3.2 ppbC. Isoprene and alpha -pinene were the most abundant compounds throughout the growing season, but beta -pinene, Delta (3)-carene, camphene, 1,8-cineol, sabinene and limonene were Found as well. Isoprene and sabinene concentrations started to increase later than the concentrations of other compounds, and were better correlated with each other than with other compounds. Diurnal variations of monoterpenes show a minimum in the daytime and a maximum at night, except sabinene at midsummer, that has maximum concentrations during the day. The field data support the idea that the effective temperature sum can be used to predict the initiation of emissions of isoprene and also terpene emissions from Betula pendula. (C) 2000 Elsevier Science Ltd. All rights reserved.
引用
收藏
页码:4971 / 4982
页数:12
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