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Diel Variability of...
Diel Variability of CO2 Emissions From Northern Lakes
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- Rudberg, David (author)
- Linköpings universitet,Tema Miljöförändring,Filosofiska fakulteten
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- Duc, N. T. (author)
- Linköpings universitet,Tema Miljöförändring,Filosofiska fakulteten
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- Schenk, Jonathan, 1992- (author)
- Linköpings universitet,Tema Miljöförändring,Filosofiska fakulteten
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- Sieczko, Anna Katarzyna, 1978- (author)
- Linköpings universitet,Tema Miljöförändring,Filosofiska fakulteten
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- Pajala, Gustav, 1991- (author)
- Linköpings universitet,Tema Miljöförändring,Filosofiska fakulteten
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- Sawakuchi, Henrique Oliveira (author)
- Linköpings universitet,Umeå universitet,Institutionen för ekologi, miljö och geovetenskap,Department of Thematic Studies-Environmental Change, Linköping University, Linköping, Sweden,Tema Miljöförändring,Filosofiska fakulteten,Department of Ecology and Environmental Sciences, Umeå Universitet, Umeå, Sweden
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- Verheijen, Hendricus (author)
- Umeå universitet,Institutionen för ekologi, miljö och geovetenskap,Department of Ecology and Environmental Sciences, Umeå Universitet, Umeå, Sweden
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- Melack, J.M. (author)
- Department of Ecology, Evolution, and Marine Biology, University of California Santa Barbara, CA, Santa Barbara, United States; University of California Santa Barbara, Earth Research Institute, CA, Santa Barbara, United States
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- MacIntyre, S. (author)
- Department of Ecology, Evolution, and Marine Biology, University of California Santa Barbara, CA, Santa Barbara, United States; University of California Santa Barbara, Earth Research Institute, CA, Santa Barbara, United States; University of California Santa Barbara, Marine Science Institute, CA, Santa Barbara, United States
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- Karlsson, Jon, 1984- (author)
- Umeå universitet,Institutionen för ekologi, miljö och geovetenskap,Department of Ecology and Environmental Sciences, Umeå Universitet, Umeå, Sweden
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- Bastviken, David, 1971- (author)
- Linköpings universitet,Tema Miljöförändring,Filosofiska fakulteten
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(creator_code:org_t)
- Hoboken, United States : John Wiley & Sons, 2021
- 2021
- English.
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In: Journal of Geophysical Research - Biogeosciences. - Hoboken, United States : John Wiley & Sons. - 2169-8953 .- 2169-8961. ; 126:10
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
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- Lakes are generally supersaturated in carbon dioxide (CO2) and emitters of CO2 to the atmosphere. However, estimates of CO2 flux ((Formula presented.)) from lakes are seldom based on direct flux measurements and usually do not account for nighttime emissions, yielding risk of biased assessments. Here, we present direct (Formula presented.) measurements from automated floating chambers collected every 2–3 hr and spanning 115 24 hr periods in three boreal lakes during summer stratification and before and after autumn mixing in the most eutrophic lake of these. We observed 40%–67% higher mean (Formula presented.) in daytime during periods of surface water CO2 supersaturation in all lakes. Day-night differences in wind speed were correlated with the day-night (Formula presented.) differences in the two larger lakes, but in the smallest and most wind-sheltered lake peaks of (Formula presented.) coincided with low-winds at night. During stratification in the eutrophic lake, CO2 was near equilibrium and diel variability of (Formula presented.) insignificant, but after autumn mixing (Formula presented.) was high with distinct diel variability making this lake a net CO2 source on an annual basis. We found that extrapolating daytime measurements to 24 hr periods overestimated (Formula presented.) by up to 30%, whereas extrapolating measurements from the stratified period to annual rates in the eutrophic lake underestimated (Formula presented.) by 86%. This shows the importance of accounting for diel and seasonal variability in lake CO2 emission estimates.
Subject headings
- NATURVETENSKAP -- Biologi -- Ekologi (hsv//swe)
- NATURAL SCIENCES -- Biological Sciences -- Ecology (hsv//eng)
- NATURVETENSKAP -- Geovetenskap och miljövetenskap -- Naturgeografi (hsv//swe)
- NATURAL SCIENCES -- Earth and Related Environmental Sciences -- Physical Geography (hsv//eng)
Keyword
- automated flux chambers
- autumn mixing
- carbon dioxide fluxes
- diel variability
- lake greenhouse gas emissions
Publication and Content Type
- ref (subject category)
- art (subject category)
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- By the author/editor
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Rudberg, David
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Duc, N. T.
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Schenk, Jonathan ...
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Sieczko, Anna Ka ...
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Pajala, Gustav, ...
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Sawakuchi, Henri ...
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Verheijen, Hendr ...
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Melack, J.M.
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MacIntyre, S.
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Karlsson, Jon, 1 ...
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Bastviken, David ...
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- About the subject
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Biological Scien ...
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and Ecology
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Earth and Relate ...
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and Physical Geograp ...
- Articles in the publication
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Journal of Geoph ...
- By the university
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Umeå University
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Linköping University