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Sand and Dust Storm (SDS) Episodes Classification in the Eastern Mediterranean Region

Show simple item record 2020-05-29T07:25:12Z 2020-05-29T07:25:12Z 2020-05-29
dc.title Sand and Dust Storm (SDS) Episodes Classification in the Eastern Mediterranean Region en
ethesis.discipline none und
ethesis.department none und
ethesis.faculty Matemaattis-luonnontieteellinen tiedekunta fi
ethesis.faculty Faculty of Science en
ethesis.faculty Matematisk-naturvetenskapliga fakulteten sv
ethesis.faculty.URI Helsingin yliopisto fi University of Helsinki en Helsingfors universitet sv
dct.creator Al Dulaimi, Qusay
dct.issued 2020
dct.language.ISO639-2 eng
dct.abstract Sand and dust storms are one of the major regional environmental problems that affect human health. Many environmental studies have focused on airborne dust concentrations observed at different regions and have tried to connect the observations to specific dust source regions. This thesis aims to provide a new dust classifications scheme for the Eastern Mediterranean region, specifically observed in Amman, Jordan. I utilized a combination of a long-term data-base consisting of aerosol particle number concentration in coarse mode (1–10 µm) during November 2013 – July 2018 and air mass back trajectories analysis to visually identify the Sand and Dust Storm (SDS) episodes. The classification included three main source regions of for the submicron dust, namely Sahara, Arabia, and Levant. I also classified the data according to the, episode intensity according to their corresponding number concentrations as no-dust, mild, intermediate, and strong intensities and further classified the range of back trajectories as short, intermediate, long, and very long, which indicates the distance between the observation site and the source region.. The results showed that majority of the dust events and an elevated number of dust days are influenced by a source in Levant and Sahara source region. These events which dominated during 70 days in 2016. The Levant source governed during 60 days during the same period. Other dust sources contributed less to the dusty days, and the lowest dusty days number was due to emissions from Levant & Arabia (19 days). The episode intensity varied censurably and underlined variability from the different source areas. The maximum intensity in the dust episode concentration was linked to Levant & Sahara with a max number concentration of 95 /cm3. The classification method was successful and it was able to establish a dust source database in the Eastern Mediterranean region based on the long-term observations performed in Amman with variable dust concentration and dust periods in different seasons and different meteorological circumstances. en
dct.subject Eastern Mediterranean en
dct.subject sand and dust storms en
dct.language en
ethesis.isPublicationLicenseAccepted false
ethesis.language English en
ethesis.language englanti fi
ethesis.language engelska sv
ethesis.thesistype pro gradu -tutkielmat fi
ethesis.thesistype master's thesis en
ethesis.thesistype pro gradu-avhandlingar sv
dct.identifier.ethesis E-thesisID:aaa96a0e-2fa5-479d-8c20-ad5c0bca31aa
dct.identifier.urn URN:NBN:fi:hulib-202005292521
dc.type.dcmitype Text
ethesis.facultystudyline Aerosolifysiikka fi
ethesis.facultystudyline Aerosol Physics en
ethesis.facultystudyline Aerosolfysik sv
ethesis.mastersdegreeprogram Ilmakehätieteiden maisteriohjelma fi
ethesis.mastersdegreeprogram Master's Programme in Atmospheric Sciences en
ethesis.mastersdegreeprogram Magisterprogrammet i atmosfärsvetenskaper sv

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