Výsledky vyhledávání - "D.H. Søgaard"

Gypsum crystals observed in experimental and natural sea ice

Autor: Nicolas-Xavier Geilfus, D.H. Søgaard, Søren Rysgaard, Norman M. Halden, M. Cooper, Feiyue Wang, A.A. Hare, Ryan J. Galley

Publikováno v: Geophysical Research Letters. 40:6362-6367

[1] Although gypsum has been predicted to precipitate in sea ice, it has never been observed. Here we provide the first report on gypsum precipitation in both experimental and natural sea ice. Crystals were identified by X-ray diffraction analysis. B

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::8ed8e226e3abc7541ec30cee880c76b3
https://doi.org/10.1002/2013gl058479

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Short-term variability in bacterial abundance, cell properties, and incorporation of leucine and thymidine in subarctic sea ice

Autor: L. Norman, David N. Thomas, Bruno Delille, D.H. Søgaard, Hermanni Kaartokallio, Jean-Louis Tison, Søren Rysgaard

Publikováno v: Kaartokallio, H, Sogaard, D H, Norman, L, Rysgaard, S, Tison, J L, Delille, B & Thomas, D N 2013, ' Short-term variability in bacterial abundance, cell properties, and incorporation of leucine and thymidine in subarctic sea ice ', Aquatic Microbial Ecology, vol. 71, pp. 57-73 . https://doi.org/10.3354/ame01667
Kaartokallio, H, Søgaard, D H, Norman, L, Rysgaard, S, Tison, J-L, Delille, B & Thomas, D 2013, ' Short-term variability in bacterial abundance, cell properties, and incorporation of leucine and thymidine in subarctic sea ice ', Aquatic Microbial Ecology, vol. 71, no. 1, pp. 57-73 . https://doi.org/10.3354/ame01667

Sea ice is a biome of immense size and provides a range of habitats for diverse microbial communities, many of which are adapted to living at low temperatures and high salinities in brines. We measured simultaneous incorporation of thymidine (TdR) an

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::73ba562e24dd77708262d702e512ef8d
https://doi.org/10.3354/ame01667

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Ikaite crystal distribution in winter sea ice and implications for CO2 system dynamics

Autor: Daniel Frank Mcginnis, Jens K. Ehn, David G. Barber, Monika Pućko, M. Cooper, Jakob Sievers, Nicolas-Xavier Geilfus, Ronnie N. Glud, Feiyue Wang, D.H. Søgaard, Søren Rysgaard, Karl M. Attard, Jody W. Deming, Tim Papakyriakou, Kunuk Lennert

Publikováno v: The Cryosphere. 7:707-718

The precipitation of ikaite (CaCO3 ⋅ 6H2O) in polar sea ice is critical to the efficiency of the sea ice-driven carbon pump and potentially important to the global carbon cycle, yet the spatial and temporal occurrence of ikaite within the ice is po

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::ede852774d81369428f2b7d86272fbe2
https://doi.org/10.5194/tc-7-707-2013

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Parameterization of atmosphere-surface exchange of CO2 over sea ice

Autor: Lise Lotte Sørensen, Søren Rysgaard, Jakob Sievers, Bjarne Bruun Jensen, Ronnie N. Glud, D.H. Søgaard, Mikael Christian Sejr, Jean-Louis Tison, Daniel Frank Mcginnis

Publikováno v: Sørensen, L L, Jensen, B, Glud, R N, McGinnis, D F, Sejr, M K, Sievers, J, Søgaard, D H, Tison, J-L & Rysgaaard, S 2014, ' Parameterization of atmosphere-surface exchange of CO 2 over sea ice ', Cryosphere, vol. 8, no. 3, pp. 853-866 . https://doi.org/10.5194/tc-8-853-2014

We suggest the application of a flux parameterization commonly used over terrestrial areas for calculation of CO2 fluxes over sea ice surfaces. The parameterization is based on resistance analogy. We present a concept for parameterization of the CO2

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7785ba188a8182e62ffcaff8ddd6651c
https://portal.findresearcher.sdu.dk/da/publications/6211805f-cdd3-47e7-8811-0a9d53113a40

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High air-sea CO 2 uptake rates in nearshore and shelf areas of Southern Greenland: Temporal and spatial variability

Autor: Lise Lotte Sørensen, Martin E. Blicher, Søren Rysgaard, Jørgen Bendtsen, Mikael K. Sejr, John Mortensen, D.H. Søgaard, Thomas Juul-Pedersen, Kristine Engel Arendt, Kunuk Lennert

Publikováno v: Rysgaard, S, Mortensen, J, Juul-Pedersen, T, Sørensen, L L, Lennert, K, Søgaard, D H, Arendt, K E, Blicher, M E, Sejr, M K & Bendtsen, J 2012, ' High air-sea CO 2 uptake rates in nearshore and shelf areas of Southern Greenland: Temporal and spatial variability ' Marine Chemistry, vol. 128-129, pp. 26-33 . https://doi.org/10.1016/j.marchem.2011.11.002
Rysgaard, S, Mortensen, J, Juul-Pedersen, T, Sorensen, L L, Lennert, K, Sogaard, D H, Arendt, K E, Blicher, M E, Sejr, M K & Bendtsen, J 2012, ' High air-sea CO2 uptake rates in nearshore and shelf areas of Southern Greenland: Temporal and spatial variability ', Marine Chemistry, vol. 128, pp. 26-33 . https://doi.org/10.1016/j.marchem.2011.11.002
Rysgaard, S, Mortensen, J, Juul-Pedersen, T, Sørensen, L L, Lennert, K, Schrøder, D S, Arendt, K E, Blicher, M E, Sejr, M K & Bendtsen, J 2012, ' High air-sea CO2 uptake rates in nearshore and shelf areas of Southern Greenland: Temporal and spatial variability ', Marine Chemistry, vol. 128-129, pp. 26-33 . https://doi.org/10.1016/j.marchem.2011.11.002

The present study is based on hourly samplings of wind speed, monthly sampling sessions of temperature, salinity, dissolved inorganic carbon, alkalinity, nutrients, primary productivity and vertical export in the outer sill region (station GF3) of a

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2fa43835e5324acd45d23b48379ec737
https://pure.au.dk/portal/da/publications/high-airsea-co-2-uptake-rates-in-nearshore-and-shelf-areas-of-southern-greenland-temporal-and-spatial-variability(03adec59-e8e4-4250-a926-bb85b174e8a0).html

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