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. (2022). On the energy budget of a low-Arctic snowpack (Vol. 16).
Abstract: Arctic landscapes are covered in snow for at least 6 months of the year. The energy balance of the snow cover plays a key role in these environments, influencing the surface albedo, the thermal regime of the permafrost, and other factors. Our goal is to quantify all major heat fluxes above, within, and below a low-Arctic snowpack at a shrub tundra site on the east coast of Hudson Bay in eastern Canada. The study is based on observations from a flux tower that uses the eddy covariance approach and from profiles of temperature and thermal conductivity in the snow and soil. Additionally, we compared the observations with simulations produced using the Crocus snow model. We found that radiative losses due to negative longwave radiation are mostly counterbalanced by the sensible heat flux, whereas the latent heat flux is minimal. At the snow surface, the heat flux into the snow is similar in magnitude to the sensible heat flux. Because the snow cover stores very little heat, the majority of the upward heat flux in the snow is used to cool the soil. Overall, the model was able to reproduce the observed energy balance, but due to the effects of atmospheric stratification, it showed some deficiencies when simulating turbulent heat fluxes at an hourly timescale.
Programme: 1042
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. (2022). Metamorphism of snow on Arctic sea ice during the melt season: impact on spectral albedo and radiative fluxes through snow (Vol. 16).
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Georg Lackner, Florent Domine, Daniel F. Nadeau, Matthieu Lafaysse, Marie Dumont. (2022). (Vol. 16).
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Ghislain Picard, Marion Leduc-Leballeur, Alison F. Banwell, Ludovic Brucker, Giovanni Macelloni. (2022). The sensitivity of satellite microwave observations to liquid water in the Antarctic snowpack (Vol. 16).
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Sara Arioli, Ghislain Picard, Laurent Arnaud, Vincent Favier. (2023). Dynamics of the snow grain size in a windy coastal area of Antarctica from continuous in situ spectral-albedo measurements (Vol. 17).
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. (2023). (Vol. 17). Bachelor's thesis, , .
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. (2009). Relating Demographic Performance to Breeding-Site Location in the King Penguin
. The Condor, 111(1), 81–87.
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Annell H., Scoates J., Weis D. and Giret A. (2007). Petrology of flodd basalts at the tholeiitic-alkalic transition and phenocryst compositions, Mt Marion Dufresne, Kerguelen Archipelago, Southern Indian Ocean. The Canadian Mineralogist, 45.
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Grimwood Bryan S R, Doubleday Nancy C, Ljubicic Gita J, Donaldson Shawn G, Blangy Sylvie, . (2012). Engaged acclimatization: Towards responsible community-based participatory research in Nunavut
.56(2), 211–230.
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. (2023). Avian Energetics in a Warming Arctic (Vol. 104).
Abstract: The Arctic is warming nearly four times as rapidly as other regions of the planet, challenging the capacity of organisms to cope with shifting resources and maintain thermal balance. Tracking responses of free-living animals in dynamic environments can be challenging, but is increasingly enabled by advanced biologging approaches. We used data gathered from miniaturized bird-borne devices to demonstrate increases in energy expenditure with declining sea ice conditions and warming sea surface temperatures in a dove-sized seabird, the little auk (also named dovekie; Alle alle). This keystone species feeds on sea ice-associated copepods and inhabits large breeding colonies in the High Arctic.
Programme: 388
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