Canopy level fluxes of 2-methyl-3-buten-2-ol, acetone, and methanol by a portable relaxed eddy accumulation system

被引：45

作者：

Baker, B

Guenther, A

Greenberg, J

Fall, R

机构：

[1] Natl Ctr Atmospher Res, Boulder, CO 80303 USA

[2] Univ Colorado, Dept Chem & Biochem, Boulder, CO 80309 USA

来源：

ENVIRONMENTAL SCIENCE & TECHNOLOGY | 2001年 / 35卷 / 09期

关键词：

D O I：

10.1021/es001007j

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Canopy level flux measurements of 2-methyl-3-buten-2-ol (MBO), acetone, and methanol were made over a subalpine forest in the Rocky Mountains in Colorado in the summer of 1999. The measurements were carried out using a portable relaxed eddy accumulation system that collected samples on adsorbent cartridges. Midday fluxes of acetone were highest at similar to2.5 mg of C m(-2) h(-1). Methanol and MBO fluxes were similar to1.0 mg of C m(-2) h(-1) each. These fluxes occurred with average daytime high temperatures of only 18 degreesC. Diurnal fluxes of MBO were strongly correlated with light and temperature. Acetone and methanol did not have simple diurnal patterns. These results indicate that oxygenated volatile organic compounds may make a significant contribution to the flux of reactive carbon to the atmosphere in western U.S. pine forests.

引用

页码：1701 / 1708

页数：8

共 39 条

[1] Canopy fluxes of 2-methyl-3-buten-2-ol over a ponderosa pine forest by relaxed eddy accumulation: Field data and model comparison [J].