Essays about: "Arktis"

Showing result 21 - 25 of 40 essays containing the word Arktis.

  1. 21. Arctic sea ice drift - A comparison of modeled and remote sensing data

    University essay from Lunds universitet/Fysiska institutionen; Lunds universitet/Förbränningsfysik

    Author : Stina Karlsson; [2016]
    Keywords : Physics and Astronomy;

    Abstract : The Arctic climate and the sea ice drift are important to study both for the improvement in short-term forecasts and to get a better understanding of the climate change. Short-term forecasts are needed to improve the shipping and offshore industries in the Arctic Ocean. READ MORE

  2. 22. Snow and sea ice temperature profiles from satellite data and ice mass balance buoys

    University essay from Lunds universitet/Institutionen för naturgeografi och ekosystemvetenskap

    Author : Isabella Grönfeldt; [2016]
    Keywords : IMB; ice mass balance buoys; snow-ice interface; air-snow interface; temperature profile; snow; sea ice; Fram Strait; Greenland; Arctic Ocean; climate change; climate; physical geography and ecosystem analysis; remote sensing; satellite; sensor; SMOS; AMSR-2; TIR; numerical weather prediction; multiple regression analysis; Earth and Environmental Sciences;

    Abstract : 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

  3. 23. 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 geovetenskaper

    Author : Welsh Samuel; [2016]
    Keywords : Hydraulic potential; Greenland; GIS; sub-glacial hydrological network; ice sheet dynamics; Hydraulisk potential; Grönländ; GIS; sub-glacial hydrologi; istäckesdynamik;

    Abstract : 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

  4. 24. Land- atmosphere exchange of carbon dioxide in a high Arctic fen : importance of wintertime fluxes

    University essay from Lunds universitet/Institutionen för naturgeografi och ekosystemvetenskap

    Author : Anna Lindstein; [2015]
    Keywords : geography; physical geography; ecosystem analysis; NEE; eddy covariance; Arctic; CO2; wintertime flux; Zackenberg; Earth and Environmental Sciences;

    Abstract : 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

  5. 25. Light, temperature and competition : understanding the causes for climate-driven regime shifts in arctic marine benthos

    University essay from Uppsala universitet/Luft-, vatten och landskapslära

    Author : Kim Scherrer; [2015]
    Keywords : macroalgae; light; invertebrate; coralline algae; Arctic; benthic; regime shift; climate change; marin ekologi; tång; kalkalg; Arktis; regimskifte; klimatförändring; ljus;

    Abstract : 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