Sökning: "Precipitation"

Visar resultat 16 - 20 av 1189 uppsatser innehållade ordet Precipitation.

  1. 16. The impact of CO2 fertilisation on foliage in West and East Africa

    Master-uppsats, Lunds universitet/Institutionen för naturgeografi och ekosystemvetenskap

    Författare :Gaetane Demyttenaere; [2023]
    Nyckelord :Physical geography and ecosystem analysis; CO2 fertilisation; semi-arid ecosystems; remote sensing; Normalised Difference Vegetation Index; Earth and Environmental Sciences;

    Sammanfattning : Anthropogenic impact on terrestrial ecosystems continues to grow as we further enhance atmospheric Carbon Dioxide (CO₂) concentrations. The changing climatic conditions and direct influence of CO₂ on vegetation has a big impact on ecosystem functions. LÄS MER

  3. 17. Effect of Trace Elements on the Particle Size of Magnesium Silicide in Aluminium Extrusion : The Use of Thermo-Calc and DICTRA in order to Produce Aluminium more Efficiently

    Kandidat-uppsats, KTH/Materialvetenskap

    Författare :Gustav Boustedt; Johan Alexander Valentin Nygren; Gustav Strandgård; [2023]
    Nyckelord :Thermo-Calc; DICTRA; simulations; EN AW 6082; extrusion; particle precipitation; Mg2Si; sustainable; trace elements; aluminium;

    Sammanfattning : This project is a feasibility study for Hydro Extrusion Sweden AB, a company that produces extruded aluminium profiles. The main purpose of this project was to analyse the difference of Mg2Si particle sizes in aluminium alloys when varying parameters, such as cooling rate and composition, in aluminium extrusion, particularly the EN AW 6082 alloy. LÄS MER

  4. 18. The effect of autocorrelation when performing theapproximated permutation test

    Kandidat-uppsats, Uppsala universitet/Statistiska institutionen

    Författare :Amerik Schouten; Linus Thor; [2023]
    Nyckelord :exchangeability assumption; Monte Carlo; temporal autocorrelation; type I error; simulation; re-sampling methods;

    Sammanfattning : In meteorology, permutation tests are a commonly recommended tool because standard paramet-ric methods of inference often is insufficient when analysing weather. Therefore other methodswith less stringent assumptions like permutation testing is used. LÄS MER

  5. 19. Att förebygga översvämningar med hjälp av konceptet Sponge city : En fallstudie av Hemlingby i Gävle

    Kandidat-uppsats, Högskolan i Gävle/Samhällsbyggnad

    Författare :Johan Kjell; Filip Nilsen; [2023]
    Nyckelord :climate change; flooding; cloudburst; GIS; city planning; Sponge city; klimatförändring; översvämning; skyfall; GIS; stadsplanering; Sponge city;

    Sammanfattning : Climate change is predicted to cause an increase in cloudbursts and heavy precipitation, which makes urban flooding an issue that needs to be dealt with. The term Sponge city is a theory that intends to deal with urban flooding and worsening water quality in urban areas with absorption. LÄS MER

  7. 20. Improving the thermal climate of schools in semi-desert climate : A case study of solutions in La Guajira, Colombia

    Master-uppsats, Högskolan i Gävle/Energisystem och byggnadsteknik

    Författare :Michael Johansson; [2023]
    Nyckelord :Solar chimney; Thermal comfort; Classrooms; School; La Guajira; Colombia;

    Sammanfattning : As the climate changes, hot regions like La Guajira's semi-desert will become even hotter. It is projected that the average temperature in this region will increase by 2.4 ℃ over the course of this century, with a 20 % reduction in precipitation. LÄS MER