Essays about: "Arktis"

Showing result 11 - 15 of 40 essays containing the word Arktis.

  1. 11. Local pollution and the risks of OPFR, PBDE and PFAS to the marine ecosystem outside Longyearbyen and Barentsburg in Svalbard

    University essay from Lunds universitet/Miljövetenskaplig utbildning

    Author : Anna Olsson; [2016]
    Keywords : Local pollution; Organophosphorus flame retardants; Polybrominated diphenyl ethers; Perfluorinated alkylated substances; Sediment; Arctic; Svalbard; Adventfjorden; Grønfjorden; Risk analysis; Earth and Environmental Sciences;

    Abstract : Most of the ecotoxicological research conducted in the Arctic until today has focused on long range transport of pollutants, while fewer studies on local pollution have been published. The aim of this study was hence to investigate if local pollution of organophosphorus flame retardants (OPFRs), polybrominated diphenyl ethers (PBDEs) and perfluorinated alkylated substances (PFAS) occurs outside two settlements in Svalbard; Longyearbyen and Grønfjorden. READ MORE

  2. 12. Diversity and Evolution of Silurian Radiolarians

    University essay from Uppsala universitet/Institutionen för geovetenskaper

    Author : Martin Tetard; [2016]
    Keywords : Radiolaria; Silurian; Canadian Arctic; Paleobiodiversity; Diversity trends; CT-Scan; Radiolaria; silur; diversitetsmönster; kanadensiska Arktis;

    Abstract : The three approaches followed herein aim to improve our understanding of the paleobiodiversity andevolution of Silurian radiolarians. The first approach provides an exhaustive taxonomic description ofan entirely new radiolarian fauna recovered from two sections of the Cape Phillips Formation in theCanadian Arctic which accumulated in two different paleoenvironmental settings. READ MORE

  3. 13. 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

  4. 14. 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

  5. 15. 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