Essays about: "Carbon dioxide fluxes"

Showing result 1 - 5 of 35 essays containing the words Carbon dioxide fluxes.

  1. 1. Influence of permafrost disintegration on wetland carbon fluxes in Abisko, Sweden

    University essay from Lunds universitet/Institutionen för naturgeografi och ekosystemvetenskap

    Author : Aida Esmailzadeh Davani; [2021]
    Keywords : Physical Geography; Ecosystem Analysis; Permafrost; CH4 flux; CO2 flux; Abisko; Wetlands; Earth and Environmental Sciences;

    Abstract : The northern permafrost regions are experiencing a rapid warming as surface temperatures are rising, causing a disintegration of permafrost and a deepening of the active layer (AL). This releases previously frozen carbon, making it available for decomposition by microbes. READ MORE

  2. 2. Spatial variation in GHG emissions from drained organic forest soils : implications for Swedish UNFCCC reporting

    University essay from SLU/Dept. of Soil and Environment

    Author : Anna Oskar; [2021]
    Keywords : greenhouse gas; carbon dioxide; methane; nitrous oxide; peat; drainage; ditch; GHG inventory;

    Abstract : Drainage of organic soils for forestry generally increases soil CO2 and N2O emissions but decreases CH4 emissions. Under the United Nations Framework Convention on Climate Change (UNFCCC) countries provide annual national inventories of anthropogenic greenhouse gas (GHG) emissions and removals, which includes emissions of GHGs from drained organic forest soil. READ MORE

  3. 3. Greenhouse gas emissions from compacted peat soil

    University essay from SLU/Dept. of Soil and Environment

    Author : Antonia Hartmann; [2021]
    Keywords : carbon dioxide; compression index; Peatland agriculture; recompression index; sand addition; soil compaction;

    Abstract : Cultivated peat soils are a main driver for CO2 and N2O emissions, while the gas fluxes are dependent on intrinsic soil properties and land use. Sand addition into peat soils might reduce greenhouse gas (GHG) emissions and enhance soil strength, and thus the ability to tolerate soil compaction. READ MORE

  4. 4. ICOS Atmospheric Stations: Spatial Characterization of CO2 Footprint Areas and Evaluating the Uncertainties of Modelled CO2 Concentrations

    University essay from Lunds universitet/Institutionen för naturgeografi och ekosystemvetenskap

    Author : Ida Storm; [2020]
    Keywords : Geography; GIS; ICOS; Carbon dioxide; Modelling; Earth and Environmental Sciences;

    Abstract : The main purpose of this thesis is to present and analyze spatial characteristics of 31 different European atmospheric measurement stations in the ICOS (Integrated Carbon Observation System) station network. The characterization includes quantification of where air arriving at the stations can be expected to have come from, as well as a breakdown of what these areas cover with regards to land cover, point source emissions and population. READ MORE

  5. 5. Methane flux in the Doñana wetlands : Waterbird guano addition and benthicinvertebrate effects

    University essay from

    Author : Noa Ratia; [2019]
    Keywords : aquatic invertebrates; bottom-up effects; CH4; Doñana; greenhouse gases; mesocosm; methane; sediment cores; akvatiska evertebrater; bottom-up effekter; CH4; Doñana; mesokosm; metan; sedimentkärnor; växthusgaser;

    Abstract : Wetlands are globally important biogeochemical hotspots, and their roles as either significant sources of greenhouse gas or carbon sinks are strongly controlled by environmental drivers such as carbon, nitrogen, and phosphorus availability, which can stimulate emission of three greenhouse gases: nitrous oxide (N2O), carbon dioxide (CO2) and methane (CH4). Mounting evidence suggests that aquatic invertebrate activity can enhance wetland greenhouse gas flux, through bioturbation and bioirrigation of surrounding sediments. READ MORE