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Gas transfer rate and CO2 flux between an unproductive lake and the atmosphere in northern Sweden

Jonsson, A.; Aberg, J.; Lindroth, Anders LU and Jansson, M. (2008) In Journal of Geophysical Research 113(G4).
Abstract
Measurements of the gas transfer rate of CO2 between lake water and the atmosphere present a critical problem for the understanding of lake ecosystem carbon balances and landscape carbon budgets. We present calculations of the gas transfer rate of CO2 from direct measurements of the CO2 flux using an eddy covariance system and concurrent measurements of the concentration of CO2 in the surface water in a lake in boreal zone of northern Sweden. The measured gas transfer rate was different, and in general larger than, rates obtained with the most commonly used models for prediction of the gas transfer rate in lakes. The normalized gas transfer rate (k(600)EC) was well predicted from the wind speed at 10 m height if data were bin classed into... (More)
Measurements of the gas transfer rate of CO2 between lake water and the atmosphere present a critical problem for the understanding of lake ecosystem carbon balances and landscape carbon budgets. We present calculations of the gas transfer rate of CO2 from direct measurements of the CO2 flux using an eddy covariance system and concurrent measurements of the concentration of CO2 in the surface water in a lake in boreal zone of northern Sweden. The measured gas transfer rate was different, and in general larger than, rates obtained with the most commonly used models for prediction of the gas transfer rate in lakes. The normalized gas transfer rate (k(600)EC) was well predicted from the wind speed at 10 m height if data were bin classed into wind classes of 1 m/s for winds above 1 m/s. Unbinned data were also correlated to wind speed but also to water temperature, water temperature/air temperature ratio and to incoming photosynthetic active radiation (PAR). These relationships could reflect effects of both physico-chemical reactions and biological activity. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Journal of Geophysical Research
volume
113
issue
G4
publisher
American Geophysical Union
external identifiers
  • wos:000259989700001
  • scopus:61749103092
ISSN
2156-2202
DOI
10.1029/2008JG000688
language
English
LU publication?
yes
id
10a058cc-1802-4540-8637-87fff361a0fd (old id 1284911)
date added to LUP
2009-02-06 11:32:25
date last changed
2017-09-03 03:41:10
@article{10a058cc-1802-4540-8637-87fff361a0fd,
  abstract     = {Measurements of the gas transfer rate of CO2 between lake water and the atmosphere present a critical problem for the understanding of lake ecosystem carbon balances and landscape carbon budgets. We present calculations of the gas transfer rate of CO2 from direct measurements of the CO2 flux using an eddy covariance system and concurrent measurements of the concentration of CO2 in the surface water in a lake in boreal zone of northern Sweden. The measured gas transfer rate was different, and in general larger than, rates obtained with the most commonly used models for prediction of the gas transfer rate in lakes. The normalized gas transfer rate (k(600)EC) was well predicted from the wind speed at 10 m height if data were bin classed into wind classes of 1 m/s for winds above 1 m/s. Unbinned data were also correlated to wind speed but also to water temperature, water temperature/air temperature ratio and to incoming photosynthetic active radiation (PAR). These relationships could reflect effects of both physico-chemical reactions and biological activity.},
  author       = {Jonsson, A. and Aberg, J. and Lindroth, Anders and Jansson, M.},
  issn         = {2156-2202},
  language     = {eng},
  number       = {G4},
  publisher    = {American Geophysical Union},
  series       = {Journal of Geophysical Research},
  title        = {Gas transfer rate and CO2 flux between an unproductive lake and the atmosphere in northern Sweden},
  url          = {http://dx.doi.org/10.1029/2008JG000688},
  volume       = {113},
  year         = {2008},
}