Search for dissertations about: "air mass trajectories"

Showing result 1 - 5 of 7 swedish dissertations containing the words air mass trajectories.

  2. 1. On urban air pollution measurements : analysis for identification and classification of sources

    Author : Peter Molnár; Göteborgs universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Vertical gradients; sulphur; pm2.5; tsp; ultra fine particles; particle size distribution; air mass trajectories; traffic emissions; dmps; edxrf;

    Abstract : .... READ MORE

  4. 2. Towards a sustainable automotive industry : experiences from the development of emission control systems

    Author : David Bauner; Staffan Laestadius; Lee Schipper; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; evolutionary economics; environmental innovation; trajectories; co-evolution; Industrial engineering and economy; Industriell teknik och ekonomi;

    Abstract : From the mid-1970s and on, the contribution to air pollution of carbon monoxide, hydrocarbons and nitrogen oxides from gasoline passenger cars in the developed world has been reduced through co-evolution of regulation and commercial introduction of catalytic emission control technology, now part of hundreds of millions of cars, trucks and buses worldwide. This dissertation is a disaggregated study of the global introduction of catalytic emission control technology as a measure to reduce local air pollution. READ MORE

  5. 3. Elemental composition of fine particles: exposure in the general population and influence from different sources

    Author : Peter Molnár; Göteborgs universitet; []
    Keywords : particulate matter; PM2.5; PM1; ultrafine particles; trace elements; personal exposure; X-ray fluorescence XRF ; indoor levels; air mass back trajectories; long-range transport; domestic wood burning;

    Abstract : The general population is exposed to particulate air pollution from many different local and regional sources. Examples of local sources are traffic, biomass burning and resuspended dust, while regional sources are dominated by combustion processes from heating, traffic and industries. READ MORE

  6. 4. Tracing pathways in the ocean circulation : A temperature and salinity perspective

    Author : Sara Berglund; Kristofer Döös; Jonas Nycander; Göran Broström; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Lagrangian trajectories; Climate modelling; Atlantic Ocean; Southern Ocean; Ocean circulation; heat; atmosfärvetenskap och oceanografi; Atmospheric Sciences and Oceanography;

    Abstract : The ocean circulation plays an essential role in our climate system. It redistributes heat, salt, carbon and other tracers across the globe, making the climate of Earth more moderate. This thesis targets density differences that are driving the ocean circulation. These differences are caused by changes in temperature and salinity. READ MORE

  7. 5. Process based Modelling of Chemical and Physical Aerosol Properties Relevant for Climate and Health

    Author : Pontus Roldin; Kärnfysik; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; gas phase chemistry; aerosol dynamics; aerosol particles; climate; kinetic multilayer model; Fysicumarkivet A:2013:Roldin;

    Abstract : Atmospheric aerosol particles have substantial influence on climate and air quality. However, the anthropogenic influence on the atmospheric aerosol is still poorly known. This limits the understanding of past and future climate changes. READ MORE