Menu

Javascript is not activated in your browser. This website needs javascript activated to work properly.
You are here

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

Author:
  • E. Podgrajsek
  • E. Sahlee
  • D. Bastviken
  • Jutta Holst
  • Anders Lindroth
  • L. Tranvik
  • A. Rutgersson
Publishing year: 2014
Language: English
Pages: 4225-4233
Publication/Series: Biogeosciences
Volume: 11
Issue: 15
Document type: Journal article
Publisher: Copernicus Publications

Abstract english

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 chamber (FC) technique; however, several recent studies use the eddy covariance (EC) method. We present simultaneous flux measurements using both methods at lake Tamnaren 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 (pCO(2w)) 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.

Keywords

  • Physical Geography

Other

Published
  • ISSN: 1726-4189
E-mail: jutta [dot] holst [at] nateko [dot] lu [dot] se

Researcher

Dept of Physical Geography and Ecosystem Science

+46 46 222 40 39

+46 72 254 72 00

445

16

Research secretary

ICOS Sweden

16

Researcher

ICOS Sweden

+46 46 222 40 39

+46 72 254 72 00

444a

Sölvegatan 12, Lund

16

Department of Physical Geography and Ecosystem Science
Lund University
Sölvegatan 12
S-223 62 Lund
Sweden

Processing of personal data