Essays about: "dry deposition"

Showing result 6 - 10 of 29 essays containing the words dry deposition.

  1. 6. Hg concentration in humus soils in different Arctic and Subarctic tundra vegetation types : Including a method comparison for analyzing metals in humus soils

    University essay from

    Author : Alice Sandvärn; [2022]
    Keywords : Hg concentration; vegetation types; Arctic tundra; elevation gradient; XRF;

    Abstract : Heavy metals, such as mercury (Hg), have a long residence time in the atmosphere and can be transported long distances and deposited in the Arctic via wet and dry deposition. Still, there are few studies on the complex mercury cycle and how different plant groups absorb Hg. READ MORE

  3. 7. Inverse Atmospheric Dispersion Modeling in Complex Geometries

    University essay from Umeå universitet/Institutionen för fysik

    Author : Charlie Pelland; [2022]
    Keywords : atmospheric dispersion modeling; dispersion modeling; invers dispersion modeling; atmospheric dispersion; invers atmospheric dispersion; CFD; computational fluid dynamics; radioactive release; openfoam; CRBN; dry deposition; dry deposition velocity; scavenging effect; wet deposition; optimization model; Reynolds Averaged Navier-Stokes; adjoint mode; time-dependent rain simulation; time-dependent rain; time dependent rain simulation; time dependent rain;

    Abstract : In the event of a radioactive release in an urban environment the consequent response mustbe swift and precise. As soon as first responders have correct information, they can make anaccurate risk assessment. However, if the position, release rate and time of the radioactiverelease is unknown it is hard to know how the pollutant will spread. READ MORE

  4. 8. Träds påverkan av luftföroreningar i urbana miljöer

    University essay from SLU/Dept. of Landscape Architecture, Planning and Management (from 130101)

    Author : Elna Henriksson; [2022]
    Keywords : PM10; PM2; 5; luftföroreningar; torrdeposition;

    Abstract : Luftföroreningar är ett hälsoproblem i dagens urbana miljöer och har varit ett problem i många årtionden. Många insatser görs för att minska mängden föroreningar i luften och framsteg har gjorts. Trots det dör omkring 7600 personer per år i Sverige en för tidig död på grund av skadorna partiklar och gaser i luften orsakar. READ MORE

  5. 9. A Lead (Pb) Mass-Balance Budget for a Dry Periglacial Catchment in West Greenland : Discussing the fate of pollutant Pb

    University essay from Umeå universitet/Institutionen för ekologi, miljö och geovetenskap

    Author : Andreas Nylund; [2020]
    Keywords : Lead mass-balance budget; Dry periglacial landscape; Whole catchment; Pollution; Climate change;

    Abstract : Lead (Pb), occurs both naturally and as a pollutant in Arctic landscape systems. The ongoing climate change, especially pronounced in the Arctic, changes the premises for Pb transport and mobility. READ MORE

  6. 10. Long term restoration effects : Effects of restoration measures on restoration success in nature reserves in acidic fen, buffered fen, dry heather, wet heather, and wet grassland in Drenthe, Netherlands

    University essay from Uppsala universitet/Institutionen för biologisk grundutbildning

    Author : Erika Nyström; [2020]
    Keywords : Acidic fen; Acidification; Buffered fen; Dehydration; Dry heather; Eutrophication; Habitat deterioration; Habitat management; Moisture; Nitrogen; Nitrogen deposition; pH; Red listed species; Restoration ecology; Restoration method; Restoration success; Wet grassland; Wet heather; Ellenberg values; nature reserve; Mosse; kärr; hed; fukthed; fuktäng; uttorkning; försurning; näringsöverskott; eutrofiering; kväveöverskott; kväveregn; kvävedeponering; surt regn; habitatförsämring; försämring av naturområden; förvaltning av naturområden; fukt; kväve; pH; rödlistade arter; hotade arter; restaurering; restaureringsekologi; restaureringsmetod; restaureringsframgång;

    Abstract : Habitat degradation, fragmentation and loss are important factors causing loss in biodiversity and red listed species, and restoring habitats is essential in preventing this. However, there is a limited knowledge of the long term effects of restoration measures. READ MORE