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Comparison of Floating Chamber and Eddy Covariance Measurements of Lake Greenhouse Gas Fluxes : Volume 10, Issue 11 (25/11/2013)

By Podgrajsek, E.

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Book Id: WPLBN0003992982
Format Type: PDF Article :
File Size: Pages 27
Reproduction Date: 2015

Title: Comparison of Floating Chamber and Eddy Covariance Measurements of Lake Greenhouse Gas Fluxes : Volume 10, Issue 11 (25/11/2013)  
Author: Podgrajsek, E.
Volume: Vol. 10, Issue 11
Language: English
Subject: Science, Biogeosciences, Discussions
Collections: Periodicals: Journal and Magazine Collection, Copernicus GmbH
Historic
Publication Date:
2013
Publisher: Copernicus Gmbh, Göttingen, Germany
Member Page: Copernicus Publications

Citation

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Bastviken, D., Holst, J., Sahlée, E., Tranvik, L., Podgrajsek, E., Rutgersson, A., & Lindroth, A. (2013). Comparison of Floating Chamber and Eddy Covariance Measurements of Lake Greenhouse Gas Fluxes : Volume 10, Issue 11 (25/11/2013). Retrieved from http://www.ebooklibrary.org/


Description
Description: Uppsala University, Dept. of Earth Sciences, Air, Water and Landscape Sciences, Uppsala, Sweden. Fluxes of carbon dioxide (CO2) and methane (CH4) from lakes may have a large impact on the magnitude of the terrestrial carbon sink. Traditionally lake fluxes have been measured using the floating chambers (FC) technique, however, several recent studies use the eddy covariance (EC) method. We present simultaneous flux measurements using both methods at the lake Tämnaren in Sweden during field campaigns in 2011 and 2012. Only very few similar studies exist. For CO2 flux, the two methods agree relatively well during some periods, but deviate substantially at other times. The large discrepancies might be caused by heterogeneity of partial pressure of CO2 (pCO2w) in the EC flux footprint. The methods agree better for CH4 fluxes, it is, however, clear that short-term discontinuous FC measurements are likely to miss important high flux events.

Summary
Comparison of floating chamber and eddy covariance measurements of lake greenhouse gas fluxes

Excerpt
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