Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Implications of river intrusion and convective mixing on the spatial and temporal variability of under-ice CO2
Limnology Center, EPFL-ENT-LIMNC, Lausanne, Switzerland; Physics of Aquatic Systems Laboratory, Margaretha Kamprad Chair, EPFL-ENAC-IEE-APHYS, Lausanne, Switzerland.
Environmental Physics Group, University of Konstanz - Limnological Institute, Konstanz, Germany.
Physics of Aquatic Systems Laboratory, Margaretha Kamprad Chair, EPFL-ENAC-IEE-APHYS, Lausanne, Switzerland; Eawag,Swiss Federal Institute of Aquatic Science and Technology, Department of Surface Waters-Research and Management, Kastanienbaum,Switzerland.
Eawag,Swiss Federal Institute of Aquatic Science and Technology, Department of Surface Waters-Research and Management, Kastanienbaum, Switzerland.
Show others and affiliations
2019 (English)In: INLAND WATERS, ISSN 2044-2041, E-ISSN 2044-205X, Vol. 9, no 2, p. 162-176Article in journal (Refereed) Published
Abstract [en]

Ice-covered periods might significantly contribute to lake emissions at ice-melt, yet a comprehensive understanding of under-ice carbon dioxide (CO2) dynamics is still lacking. This study investigated the processes driving spatiotemporal patterns of under-ice CO2 in large Lake Onego. In March 2015 and 2016, under-ice CO2, dissolved inorganic carbon (DIC), and dissolved organic carbon (DOC) distributions were measured along a river to an open-lake transect. CO2 decreased from 120/129 μmol L−1 in the river to 51/98 μmol L−1 in the bay, and 34/36 μmol L−1 in the open lake, while DOC decreased from 1.18/1.55 mmol L−1 in the river to 0.67/1.04 mmol L−1 in the bay in 2015 and 2016, respectively. These decreases in concentrations with increasing distance from the river mouth indicate that river discharge modulates spatial patterns of under-ice CO2. The variability between the 2 years was mainly driven by river discharge and ice transparency affecting the extent of under-ice convection. Higher discharge during winter 2016 resulted in higher CO2 concentrations in the bay. By contrast, intensive under-ice convection led to lower, more homogeneously distributed CO2 in 2015. In conclusion, the river-to-bay transition zone is characterized by strong CO2 variability and is therefore an important zone to consider when assessing the CO2 budget of large lakes.

Place, publisher, year, edition, pages
2019. Vol. 9, no 2, p. 162-176
Keywords [en]
carbon dioxide, convective mixing, humic lake, river intrusion, spatial distribution, under-ice
National Category
Environmental Sciences
Identifiers
URN: urn:nbn:se:uu:diva-384042DOI: 10.1080/20442041.2019.1568073ISI: 000482317700004OAI: oai:DiVA.org:uu-384042DiVA, id: diva2:1318722
Funder
EU, FP7, Seventh Framework Programme, 336642Available from: 2019-05-28 Created: 2019-05-28 Last updated: 2019-10-02Bibliographically approved

Open Access in DiVA

fulltext(4354 kB)46 downloads
File information
File name FULLTEXT01.pdfFile size 4354 kBChecksum SHA-512
f32bed17484e9d96d63813e6af1158f65770d4d49edd14644f74128f68220c05e06b5fcc2d1310f97a05ca6b4edc493f0bb8b8362629b02f37312be9e162175c
Type fulltextMimetype application/pdf

Other links

Publisher's full text

Search in DiVA

By author/editor
Sobek, Sebastian
By organisation
Limnology
In the same journal
INLAND WATERS
Environmental Sciences

Search outside of DiVA

GoogleGoogle Scholar
Total: 46 downloads
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

doi
urn-nbn

Altmetric score

doi
urn-nbn
Total: 49 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf