Search for dissertations about: "air-mass transport"

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

  2. 1. Properties and Origin of Arctic Aerosols

    Author : Ann-Christine Engvall; Jörg Gumbel; Frode Stordal; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Arctic aerosols; Arctic troposphere; air-mass transport; Atmosphere and hydrosphere sciences; Atmosfärs- och hydrosfärsvetenskap; atmosfärvetenskap; Atmospheric Sciences;

    Abstract : The present thesis deals with the origin and physics of aerosols in the Arctic atmosphere. These show a large annual variability due to changes of the photochemical and cloud processes as well as of the synoptic-scale atmospheric pressure patterns. READ MORE

  4. 2. 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

  5. 3. Atmospheric Production and Transport of Cosmogenic 7Be and 10Be

    Author : Abdulhadi Kulan; Ala Aldahan; Göran Possnert; Raimund Muscheler; Uppsala universitet; []
    Keywords : Earth sciences; Aerosols; Atmosphere; Cosmogenic Be-7 and Be-10; Cs-137; Clouds; Sweden; Europe; Geovetenskap;

    Abstract : This thesis deals with the atmospheric distribution of the cosmogenic isotopes 7Be (half-life 53 days) and 10Be (half-life 1.51 million years) as well as the anthropogenic isotope 137Cs (half-life 30 years) in aerosols and precipitation. READ MORE

  6. 4. A large-eddy simulation perspective on Arctic airmass transformation and low-level cloud evolution

    Author : Antonios Dimitrelos; Annica Ekman; Caballero Rodrigo; Rune Grand Graversen; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Arctic; mixed phase clouds; sea ice; Arctic amplification; atmospheric energy transport; CCN; Atmospheric Sciences and Oceanography; atmosfärvetenskap och oceanografi;

    Abstract : The Arctic is currently warming faster than other regions of the Earth. Many processes and feedbacks contribute to the enhanced warming. Among these are the radiative effects of clouds. READ MORE

  7. 5. Arctic Atmospheric Rivers : Eulerian and Lagrangian features, and trends over the last 40 years

    Author : Cheng You; Michael Tjernström; Abhay Devasthale; Heikki Järvinen; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Arctic; Atmospheric river; Stratocumulus; Blocking; Turbulence; Longwave irradiance; atmosfärvetenskap och oceanografi; Atmospheric Sciences and Oceanography;

    Abstract : Arctic Atmospheric rivers, termed ‘warm-and-moist intrusion’ (WaMAI) in this thesis, transporting heat and moisture into the Arctic from lower latitudes, is a key contributor to the amplified warming in the Arctic under global change (Arctic Amplification). However, the warming effect of WaMAIs and its transformation along the trajectories into high Arctic still remain unclear, as well as their relation with the large-scale atmospheric circulation. READ MORE