Essays about: "aerosols"

Showing result 11 - 15 of 73 essays containing the word aerosols.

  1. 11. Secondary aerosol formation from dimethyl sulfide - Smog chamber experiments and detailed process modelling

    University essay from Lunds universitet/Kärnfysik; Lunds universitet/Fysiska institutionen

    Author : Dana Lüdemann; [2020]
    Keywords : aerosol modelling; atmospheric physics and chemistry; marine aerosols; ADCHAM; aerosol; dimethyl sulfide; Physics and Astronomy;

    Abstract : The aim of this thesis was to investigate the secondary aerosol formation from dimethylsulfide (DMS) using the aerosol dynamics, gas- and particle-phase chemistry kinetic multi-layer model, ADCHAM. The first simulations, concerning the butanol oxidation via hydroxyl radicals (OH), were performed to characterize the UV-light source of the AURA smog chamber (Aarhus university, Denmark), later used for the DMS experiments. READ MORE

  3. 12. Cirrus Clouds; Study of Microphyscial Properties and Their Seasonal & Temperature Dependence in the Tropics and Mid-latitudes

    University essay from Lunds universitet/Kärnfysik; Lunds universitet/Fysiska institutionen

    Author : Magdalena Sofia Maria Folestad; [2020]
    Keywords : Physics and Astronomy;

    Abstract : Cirrus clouds are high-level ice clouds covering ≈ 30% of Earth’s surface. The cirrus clouds ice crystals can be formed by heterogeneous or homogeneous nucleation, where temperatures for heterogeneous nucleation was set to -38 - -30 °C and for homogeneous nucleation below -42 °C. READ MORE

  4. 13. Interpreting and composing SAGE II-III satellite data with a cloud algorithm for stratospheric aerosols

    University essay from Lunds universitet/Institutionen för naturgeografi och ekosystemvetenskap

    Author : Carl Svenhag; [2020]
    Keywords : atmospheric science; Aerosol; cloud physics; stratosphere; satellite observations; SAGE; Climate change; Earth and Environmental Sciences;

    Abstract : Tolkning och kvantifiering av strålningseffekter pga. atmosfäriska partiklar är en signifikant del av IPCC’s modellering av hur tidigare klimat förändrats och hur förändringar i framtiden kommer se ut. READ MORE

  5. 14. Lung Deposition of Airborne Particles - Resolved in a Single Breath

    University essay from Lunds universitet/Ergonomi och aerosolteknologi

    Author : Amalia Larsson Hurtig; [2020]
    Keywords : Aerosols; Airborne particles; Inhalation; Lung deposition; Respiratory tract deposition; Technology and Engineering;

    Abstract : Exposure to airborne particulate matter has been declared to cause cardiovascular and respiratory disease as well as cancer. By understanding how the aerosol particles deposit in our respiratory tract, we can understand how the exposure to airborne particles affect our health. READ MORE

  6. 15. Indoor and Outdoor Measurements of Particulate Matter with the Low-Cost Optical Sensor OPC-N3

    University essay from Lunds universitet/Kärnfysik; Lunds universitet/Fysiska institutionen

    Author : Ellen Grace Soroka; [2020]
    Keywords : Physics and Astronomy;

    Abstract : This paper evaluates the low-cost optical sensor OPC-N3 from Alphasense as a suitable scientific instrument for measuring particulate matter levels in air, both outdoors and in- doors. The time-keeping and data-retrieval was additionally improved by connecting the OPC-N3 to an Arduino microcontroller equipped with a real-time clock (RTC) module and an external SD card. READ MORE