Essays about: "Arktis"

Showing result 16 - 20 of 43 essays containing the word Arktis.

  1. 16. Methane flux measurements with low-cost solid state sensors in Kobbefjord, West Greenland

    University essay from Lunds universitet/Institutionen för naturgeografi och ekosystemvetenskap

    Author : Hanna Axén; [2016]
    Keywords : Geography; Physical Geography; Arctic; Greenland; methane flux; wetlands; instrument; Earth and Environmental Sciences;

    Abstract : Methane is one of the most important greenhouse gases, and the Arctic region plays an important role in its dynamics. Due to limited observations in this remote and often harsh environments, large uncertainties surround the role of the Arctic region in a warming climate. READ MORE

  2. 17. Wind impact on sea ice motion in the Arctic

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

    Author : Klara Matsson; [2016]
    Keywords : Physics and Astronomy;

    Abstract : In order to examine how the wind at 10 m above the surface influences the sea ice motion in the Arctic Ocean, a correlation coefficient between wind and ice drift, an angle between wind direction and ice velocity and a reduction factor of the ice speed relative to the wind speed were calculated, using statistical methods. This was done on a 10 km by 10 km grid, for both winter, January to March, and summer, July to September, with data from 2014 and 2015. READ MORE

  3. 18. Black Carbons Effects on Climate : Can We Even Say Something about Them?

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

    Author : Nygren Anton; [2016]
    Keywords : Black carbon; climate; China; Arctic; Sot; klimat; Kina; Arktis;

    Abstract : Black carbon affects the atmosphere, clouds, and the albedo of snow. These effects of black carbon are a fact but exactly what they entail is not well known. READ MORE

  4. 19. Analysis of Arctic peak-season carbon flux estimations based on four MODIS vegetation products

    University essay from Lunds universitet/Institutionen för naturgeografi och ekosystemvetenskap

    Author : Antonin Kusbach; [2016]
    Keywords : satellite-derived data; vegetation indices; Arctic; net ecosystem exchange; big data analysis; Physical Geography and Ecosystem Science; Earth and Environmental Sciences;

    Abstract : Increased temperatures in high latitudes may alter the carbon dynamics throughout the Arctic. Modelled CO2 simulations show that current climate conditions constitute the Arctic a net carbon sink, though the large extent and fine landscape heterogeneity raise an uncertainty about the carbon sink/source status of the region. READ MORE

  5. 20. Analysis of the Temporal Variability of Positive Degree Day Factors

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

    Author : Hanna Rönnberg; [2016]
    Keywords : Positive Degree Day Surface Mass Balance; Physics and Astronomy;

    Abstract : The surface mass balance determines the growth or decay of an ice sheet, by taking the difference between accumulation and ablation. In this thesis snow and ice ablation is related to 2m-temperature through the positive degree day method. READ MORE