Canopy Level Fluxes of 2-Methyl-3-buten-2-ol, Acetone, and Methanol by a Portable Relaxed Eddy Accumulation System
Open Access
- 23 March 2001
- journal article
- research article
- Published by American Chemical Society (ACS) in Environmental Science & Technology
- Vol. 35 (9) , 1701-1708
- https://doi.org/10.1021/es001007j
Abstract
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 ∼2.5 mg of C m-2 h-1. Methanol and MBO fluxes were ∼1.0 mg of C m-2 h-1 each. These fluxes occurred with average daytime high temper atures of only 18 °C. 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.Keywords
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