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C2-c10 Hydrocarbon Emissions from a Boreal Wetland and Forest Floor : Volume 2, Issue 6 (23/11/2005)

By Hellén, H.

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Book Id: WPLBN0003984534
Format Type: PDF Article :
File Size: Pages 20
Reproduction Date: 2015

Title: C2-c10 Hydrocarbon Emissions from a Boreal Wetland and Forest Floor : Volume 2, Issue 6 (23/11/2005)  
Author: Hellén, H.
Volume: Vol. 2, Issue 6
Language: English
Subject: Science, Biogeosciences, Discussions
Collections: Periodicals: Journal and Magazine Collection, Copernicus GmbH
Historic
Publication Date:
2005
Publisher: Copernicus Gmbh, Göttingen, Germany
Member Page: Copernicus Publications

Citation

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Hellén, H., Hakola, H., Rinne, J., Pystynen, K., & Haapanala, S. (2005). C2-c10 Hydrocarbon Emissions from a Boreal Wetland and Forest Floor : Volume 2, Issue 6 (23/11/2005). Retrieved from http://worldebooklibrary.com/


Description
Description: Finnish Meteorological Institute, PL 503, 00 101 Helsinki, Finland. Emissions of various C2-C10 hydrocarbons and halogenated hydrocarbons from a boreal wetland and Scots pine forest floor were measured by static chamber technique in south-western Finland. Isoprene was the main non-methane hydrocarbon emitted by the wetland but also small emissions of ethene, propane, propene, 1-butene, 2-methylpropene, butane, pentane and hexane were detected. The isoprene emission from the wetland was observed to follow the commonly used isoprene emission algorithm. The mean emission potential of isoprene was 224 Μg m−2 h−1 for the whole season. This is lower than the emission potentials published earlier and probably least partly due to the cold and cloudy weather during the measurements. No emissions of monoterpenes or halogenated hydrocarbons from the wetland were detected. Highest hydrocarbon emissions from the Scots pine forest floor were measured in spring and autumn. Main emitted compounds were monoterpenes. Isoprene emissions were negligible. Highest monoterpene emissions were measured in spring after the snow had melted. Emissions dropped in the summer and increased again in autumn. The total monoterpene emission rates varied from zero to 373 Μg m−2 h−1. Probable source for these emissions is decaying plant litter. Also small emissions of chloroform (100–800 ng m−2 h−1), ethene, propane, propene, 2-methylpropene, cis-2-butene, pentane, hexane and heptane were detected.

Summary
C2-C10 hydrocarbon emissions from a boreal wetland and forest floor

 

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