Search for dissertations about: "Svalbard"
Showing result 16 - 20 of 35 swedish dissertations containing the word Svalbard.
-
16. Aerosol–cloud interactions in a warming Arctic
Abstract : Atmospheric aerosol particles are small liquid or solid particles suspended in the air. They are present in the atmosphere all around us and affect the planetary energy balance by scattering and absorbing radiation and by interacting with clouds. In model projections of future climate, aerosol–cloud interactions contribute a lot of uncertainty. READ MORE
-
17. Population Genetic Analyses of Natal Dispersal and Substructure in Three Bird Species
Abstract : Genetic variation within and among populations is a result of past and ongoing processes. Among the most important of such processes are dispersal, habitat fragmentation and selection. This thesis use neutral genetic variation as a tool to investigate these processes in three bird species. READ MORE
-
18. Isotope-based source apportionment of black carbon aerosols in the Eurasian Arctic
Abstract : Aerosols change the Earth's energy balance. Black carbon (BC) aerosols are a product of incomplete combustion of fossil fuels and biomass burning and cause a net warming through aerosol radiation interactions (ari) and aerosol cloud interactions (aci). READ MORE
-
19. Tundra meets atmosphere : Seasonal dynamics of trace gas exchange in the High Arctic
Abstract : Arctic environments have experienced strong warming in recent decades, which is affecting the carbon cycle of tundra ecosystems.Degrading permafrost, diminishing snow cover, and changing hydrology are examples of ongoing processes that affect the land-atmosphere interactions and seasonal ecosystem dynamics. READ MORE
-
20. Surface energy exchange and land-atmosphere interactions of Arctic and subarctic tundra ecosystems under climate change
Abstract : The surface energy balance determines the functioning of any ecosystem on the Earth but is still poorly understood in Arctic and subarctic biomes. In a dynamic system, such as the Earth’s climate, any change in its characteristics modifies the exchange of energy, water, and greenhouse gases between the surface and the atmosphere. READ MORE