Essays about: "aerosol modelling"

Showing result 1 - 5 of 7 essays containing the words aerosol modelling.

1. 1. Testing aerosol vertical profiling methods with portable instruments on unmanned and manned aircraft

   University essay from Lunds universitet/Institutionen för naturgeografi och ekosystemvetenskap

   Author : Ellen Grace Soroka; [2023]
   Keywords : Physical Geography; Ecosystem Analysis; Aerosols; Vertical Profile; Black Carbon; PM2.5; Nanoparticles; UAV; Drone; Master degree thesis; 30 credits in Atmospheric Science Biogeochemical Cycles; Earth and Environmental Sciences;

   Abstract : This thesis employed several portable sensors on board an unmanned aerial vehicle (UAV) and manned aircraft in order to test new methods of measuring vertical profiles of aerosol particles and contribute to knowledge of aerosol distributions in the atmosphere. More data in this area is required to improve atmospheric modelling and future climate scenarios. READ MORE

3. 2. Deposition of a Polydisperse Aerosol in the Upper Respiratory Tract

   University essay from Lunds universitet/Ergonomi och aerosolteknologi

   Author : Fanny Bergman; [2020]
   Keywords : Aerosol; particle deposition; upper airways; inhalation measurements; polydisperse aerosol generation; mouth-throat model; Technology and Engineering;

   Abstract : Inhaled pharmaceuticals are commonly used in the treatment of respiratory disease. This method of administration has many advantages but also poses a problem with particles being lost before reaching the target site. Particle deposition in airways is mainly an effect of inertial impaction, gravitational settling and diffusion. READ MORE

4. 3. 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

5. 4. Development of a multi-collector inductively coupled plasma massspectrometry method for measurement of stable sulphur isotope ratios in aerosol sulphate

   University essay from Uppsala universitet/Analytisk kemi

   Author : Katerina Rodiouchkina; [2018]
   Keywords : Sulphate aerosol; isotope ratio; sulphur isotope; δ34S and δ33S measurements; MC-ICP-MS; method development; inter-laboratory comparison;

   Abstract : Sulphur stable isotope ratios are useful tracers in geological and environmental studies. They can for example be used to trace the origin of atmospheric sulphate aerosols, because anthropogenic sulphate and natural sulphate have distinguishable δ34S-values (δ34S value of approximately +0 to +8 ‰ for anthropogenic and approximately +12 to +19 ‰ for natural). READ MORE

6. 5. Analyzing Meteorological Relationships to Aerosols in China

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

   Author : Carl Svenhag; [2017]
   Keywords : Physics and Astronomy;

   Abstract : Meteorological conditions are influenced everyday by air-bound aerosols and pollution in the atmosphere, and understanding these processes from micro to synoptic scale, is essential for forecasting and creating high resolution weather models. In this study, three different experimental weather models are analysed to provide some understanding on how various meteorological parameters are influenced by modelling atmospheric aerosols. READ MORE