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  • Pajala, GustavLinköpings universitet,Tema Miljöförändring,Filosofiska fakulteten (author)

Higher apparent gas transfer velocities for CO2 compared to CH4 in small lakes

  • Article/chapterEnglish2023

Publisher, publication year, extent ...

  • American Chemical Society (ACS),2023
  • electronicrdacarrier

Numbers

  • LIBRIS-ID:oai:DiVA.org:umu-212016
  • https://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-212016URI
  • https://doi.org/10.1021/acs.est.2c09230DOI
  • https://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-196095URI

Supplementary language notes

  • Language:English
  • Summary in:English

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  • Subject category:ref swepub-contenttype
  • Subject category:art swepub-publicationtype

Notes

  • Funding Agencies|European Research Council (ERC); European Union [725546]; Knut and Alice Wallenberg Foundation [2016.0083]; Swedish Research Council [2016-04829]; Swedish Research Council for Sustainable Development (FORMAS) [2018-01794]; US National Science Foundation (Division of Environmental Biology) [1753856]
  • Large greenhouse gas emissions occur via the release of carbon dioxide (CO2) and methane (CH4) from the surface layer of lakes. Such emissions are modeled from the air-water gas concentration gradient and the gas transfer velocity (k). The links between k and the physical properties of the gas and water have led to the development of methods to convert k between gases through Schmidt number normalization. However, recent observations have found that such normalization of apparent k estimates from field measurements can yield different results for CH4 and CO2. We estimated k for CO2 and CH4 from measurements of concentration gradients and fluxes in four contrasting lakes and found consistently higher (on an average 1.7 times) normalized apparent k values for CO2 than CH4. From these results, we infer that several gas-specific factors, including chemical and biological processes within the water surface microlayer, can influence apparent k estimates. We highlight the importance of accurately measuring relevant air-water gas concentration gradients and considering gas-specific processes when estimating k.

Subject headings and genre

Added entries (persons, corporate bodies, meetings, titles ...)

  • Rudberg, DavidLinköpings universitet,Tema Miljöförändring,Filosofiska fakulteten(Swepub:liu)davru94 (author)
  • Gålfalk, MagnusLinköpings universitet,Tema Miljöförändring,Filosofiska fakulteten(Swepub:liu)magga04 (author)
  • Melack, John MichaelDepartment of Ecology, Evolution and Marine Biology, University of California, UCEN Rd, Santa Barbara, California, United States; Earth Research Institute, University of California, Lagoon Rd, Santa Barbara, California, United States,Univ Calif Santa Barbara, CA 93117 USA; Univ Calif Santa Barbara, CA 93106 USA (author)
  • Macintyre, SallyDepartment of Ecology, Evolution and Marine Biology, University of California, UCEN Rd, Santa Barbara, California, United States; Earth Research Institute, University of California, Lagoon Rd, Santa Barbara, California, United States; Marine Science Institute, University of California, Isla Vista, Santa Barbara, California, United States,Univ Calif Santa Barbara, CA 93117 USA; Univ Calif Santa Barbara, CA 93106 USA; Univ Calif Santa Barbara, CA 93117 USA (author)
  • Karlsson, Jan,1974-Umeå universitet,Institutionen för ekologi, miljö och geovetenskap,Umea Univ, Sweden(Swepub:umu)jaka0003 (author)
  • Sawakuchi, HenriqueLinköpings universitet,Tema Miljöförändring,Filosofiska fakulteten(Swepub:liu)henol98 (author)
  • Schenk, JonathanLinköpings universitet,Tema Miljöförändring,Filosofiska fakulteten(Swepub:liu)jonsc68 (author)
  • Sieczko, AnnaLinköpings universitet,Tema Miljöförändring,Filosofiska fakulteten(Swepub:liu)annsi08 (author)
  • Sundgren, IngridLinköpings universitet,Tema Miljöförändring,Filosofiska fakulteten(Swepub:liu)ingsu87 (author)
  • Nguyen, Thanh DucLinköpings universitet,Tema Miljöförändring,Filosofiska fakulteten(Swepub:liu)thang92 (author)
  • Bastviken, DavidLinköpings universitet,Tema Miljöförändring,Filosofiska fakulteten(Swepub:liu)davba48 (author)
  • Linköpings universitetTema Miljöförändring (creator_code:org_t)

Related titles

  • In:Environmental Science and Technology: American Chemical Society (ACS)57:23, s. 8578-85870013-936X1520-5851

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