Essays about: "Arktis"
Showing result 31 - 35 of 49 essays containing the word Arktis.
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31. Snow and sea ice temperature profiles from satellite data and ice mass balance buoys
University essay from Lunds universitet/Institutionen för naturgeografi och ekosystemvetenskapAbstract : The sea ice covers approximately 5% of the Earth’s surface at any given time and it plays an important role in the polar climate system affecting the heat, mass and momentum exchange between the atmosphere and the ocean. The snow cover on top of the sea ice affects its insulating and reflective properties and thus key figures in the climate system feedback loop. READ MORE
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32. Applying GIS to Investigate the Spatial Variability of Sub-Glacial Hydrology under Land Terminating Ice Sheets in Western Greenland Ice Sheet.
University essay from Uppsala universitet/Institutionen för geovetenskaperAbstract : With continued warming regional surface air temperatures around the Artic in recent decades, there is growing importance in understanding how ice sheet dynamics interact with a shifting global climate system. This research investigates the spatial variability of sub-glacial hydrology under land terminating ice sheets in Western GrIS, when applying varying overburden ice pressures within Shreve’s (1972) hydraulic potential equation. READ MORE
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33. Land- atmosphere exchange of carbon dioxide in a high Arctic fen : importance of wintertime fluxes
University essay from Lunds universitet/Institutionen för naturgeografi och ekosystemvetenskapAbstract : Global warming is predicted to have a major impact on the ecosystems over the polar latitudes including the Arctic region which is thought to be especially sensitive to changes in climate. So far, the research studying greenhouse gases in the Arctic has primarily been focused on the short and intense growing season when carbon flux is mostly driven by plants and soil microorganisms. READ MORE
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34. Light, temperature and competition : understanding the causes for climate-driven regime shifts in arctic marine benthos
University essay from Uppsala universitet/Luft-, vatten- och landskapsläraAbstract : In the Arctic, shallow sea-floor communities have been documented to shift abruptly from an invertebrate-dominated state to a state with high macroalgal abundance. Climate warming, resulting in increased water temperatures and decreased sea ice cover, could trigger such regime shifts in benthic ecosystems, but the underlying mechanisms are not clear. READ MORE
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35. Miljökemikaliers påverkan på isbjörnars (Ursus maritimus) reproduktion och hur dessa kemikalier når djuren
University essay from SLU/Dept. of Anatomy, Physiology and BiochemistryAbstract : Environmental chemicals are transported to the Arctic through the air and oceans, once within the Arctic they spread through rivers, lakes and other watercourses. Polar bears and sledge dogs in-gest high concentrations of environmental chemicals since many of the chemicals are fat-soluble and their diet mainly consists of marine mammals. READ MORE