Essays about: "Zackenberg"

Showing result 6 - 9 of 9 essays containing the word Zackenberg.

  1. 6. Analysis of NDVI variation and snowmelt around Zackenberg station, Greenland with comparison of ground data and remote sensing

    University essay from Lunds universitet/Institutionen för naturgeografi och ekosystemvetenskap

    Author : Georgios Konstantinos Lagkas; [2015]
    Keywords : active layer; snow; growing period; NDVI; Zackenberg; Greenland; geography; physical geography; statistical analysis; regression analysis; geomatics; Earth and Environmental Sciences;

    Abstract : Snow and permafrost are significant climatic factors affecting the climate in high latitudes and especially in arctic regions. Moreover, results of conducted scientific studies have shown that snow is crucial for photosynthetic activity and therefore vegetation vigor and growing season in arctic environments. READ MORE

  3. 7. 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

  4. 8. Modelling vegetation dynamics and carbon fluxes in a high Arctic mire

    University essay from Lunds universitet/Institutionen för naturgeografi och ekosystemvetenskap

    Author : Laura Reinelt; [2015]
    Keywords : methane dynamics; biogeochemical cycling; vegetation dynamics; ecosystem modelling; LPJ-GUESS; geography; physical geography; high Arctic wetland; Zackenberg; Earth and Environmental Sciences;

    Abstract : High Arctic wetlands are an important component of the global climate system. Nevertheless estimations of their expected response to climate change and associated climate-feedbacks have large uncertainties. Improving models for vegetation and carbon dynamics of ecosystems is an important step towards making predictions more accurate. READ MORE

  5. 9. Grazing in the Arctic : can it mitigate the impacts of climate change? : case study: Zackenberg, northeast Greenland

    University essay from Lunds universitet/Institutionen för naturgeografi och ekosystemvetenskap

    Author : Caroline Jonsson; [2012]
    Keywords : Arctic; climate change; warming; grazing; ecosystem responses; muskox; herbivores; grazing optimization hypothesis; CO₂-fluxes; Greenland; Zackenberg; Earth and Environmental Sciences;

    Abstract : Climate change has affected ecosystem structure and composition in the Arctic during the last few decades. Researchers have observed a greening trend as the active layer depth is increasing due to rising air- and soil temperatures. READ MORE