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Akademický článek

Ice algae contributions to the benthos during a time of sea ice change: a review of supply, coupling, and fate

Autor: Andrea Niemi, Bodil A. Bluhm, Thomas Juul-Pedersen, Doreen Kohlbach, Marit Reigstad, Dorte H. Søgaard, Rémi Amiraux

Publikováno v: Frontiers in Environmental Science, Vol 12 (2024)

The polymer-facilitated flux of ice algae on Arctic shelves can initiate benthic activity and growth after the nutritionally constrained winter period. Lipid-rich ice algae are readily consumed by benthos and those entering the sediment can benefit d

Externí odkaz: https://doaj.org/article/c7a6be0baa60487285a8823e28638495

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Akademický článek

An under-ice bloom of mixotrophic haptophytes in low nutrient and freshwater-influenced Arctic waters

Autor: Dorte H. Søgaard, Brian K. Sorrell, Mikael K. Sejr, Per Andersen, Søren Rysgaard, Per Juel Hansen, Annaliina Skyttä, Signe Lemcke, Lars Chresten Lund-Hansen

Publikováno v: Scientific Reports, Vol 11, Iss 1, Pp 1-8 (2021)

Abstract The pelagic spring bloom is essential for Arctic marine food webs, and a crucial driver of carbon transport to the ocean depths. A critical challenge is understanding its timing and magnitude, to predict its changes in coming decades. Spring

Externí odkaz: https://doaj.org/article/fd8b89093dc2476a9b8286ded3e65ac1

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Akademický článek

Glacial meltwater and primary production are drivers of strong CO2 uptake in fjord and coastal waters adjacent to the Greenland Ice Sheet

Autor: L. Meire, D. H. Søgaard, J. Mortensen, F. J. R. Meysman, K. Soetaert, K. E. Arendt, T. Juul-Pedersen, M. E. Blicher, S. Rysgaard

Publikováno v: Biogeosciences, Vol 12, Iss 8, Pp 2347-2363 (2015)

The Greenland Ice Sheet releases large amounts of freshwater, which strongly influences the physical and chemical properties of the adjacent fjord systems and continental shelves. Glacial meltwater input is predicted to strongly increase in the fu

Externí odkaz: https://doaj.org/article/97adc8f91ecf4007966b4b5f96b57c78

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Akademický článek

Parameterization of atmosphere–surface exchange of CO2 over sea ice

Autor: L. L. Sørensen, B. Jensen, R. N. Glud, D. F. McGinnis, M. K. Sejr, J. Sievers, D. H. Søgaard, J.-L. Tison, S. Rysgaard

Publikováno v: The Cryosphere, Vol 8, Iss 3, Pp 853-866 (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://doaj.org/article/1265643aece842bc8139b1a8d8ae0e5a

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Akademický článek

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

Autor: S. Rysgaard, D. H. Søgaard, M. Cooper, M. Pućko, K. Lennert, T. N. Papakyriakou, F. Wang, N. X. Geilfus, R. N. Glud, J. Ehn, D. F. McGinnis, K. Attard, J. Sievers, J. W. Deming, D. Barber

Publikováno v: The Cryosphere, Vol 7, Iss 2, Pp 707-718 (2013)

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://doaj.org/article/5efec790b3dc467db098132e09857b65

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Akademický článek

Oxygen exchange and ice melt measured at the ice-water interface by eddy correlation

Autor: M. H. Long, D. Koopmans, P. Berg, S. Rysgaard, R. N. Glud, D. H. Søgaard

Publikováno v: Biogeosciences, Vol 9, Iss 6, Pp 1957-1967 (2012)

This study examined fluxes across the ice-water interface utilizing the eddy correlation technique. Temperature eddy correlation systems were used to determine rates of ice melting and freezing, and O2 eddy correlation systems were used to examine O2

Externí odkaz: https://doaj.org/article/48dd2fbdcad642a390a7844d71fce476

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Akademický článek

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Local coastal water masses control heat levels in a west Greenland tidewater outlet glacier fjord

Autor: D. H. Søgaard, Kristine Engel Arendt, Lorenz Meire, Jørgen Bendtsen, John Mortensen, Thomas Juul-Pedersen, Søren Rysgaard

Publikováno v: Mortensen, J, Rysgaard, S, Arendt, K E, Juul-Pedersen, T, Søgaard, D H, Bendtsen, J & Meire, L 2018, ' Local Coastal Water Masses Control Heat Levels in a West Greenland Tidewater Outlet Glacier Fjord ', Journal of Geophysical Research: Oceans, vol. 123, no. 11, pp. 8068-8083 . https://doi.org/10.1029/2018JC014549

Fjords form the gateway between the open ocean and the Greenland Ice Sheet (GIS) and consequently play a crucial role for the stability of the Ice Sheet. Hydrographic observations, especially with seasonal resolution, from these fjords are limited ma

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f7bcff5f6f9eb3f9aa269089c5921b44
https://www.vliz.be/imisdocs/publications/84/322284.pdf

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