Identification of the Aerosol Types over Athens, Greece: The Influence of Air-Mass Transport
Aerosol optical depth at 550 nm (AOD550) and fine-mode (FM) fraction data from Terra-MODIS were obtained over the Greater Athens Area covering the period February 2000–December 2005. Based on both AOD550 and FM values three main aerosol types have been discriminated corresponding to urban/industrial...
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| Format: | Article |
| Language: | English |
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Wiley
2010-01-01
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| Series: | Advances in Meteorology |
| Online Access: | http://dx.doi.org/10.1155/2010/168346 |
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| author | D. G. Kaskaoutis P. G. Kosmopoulos H. D. Kambezidis P. T. Nastos |
| author_facet | D. G. Kaskaoutis P. G. Kosmopoulos H. D. Kambezidis P. T. Nastos |
| author_sort | D. G. Kaskaoutis |
| collection | DOAJ |
| description | Aerosol optical depth at 550 nm (AOD550) and fine-mode (FM) fraction data from Terra-MODIS were obtained over the Greater Athens Area covering the period February 2000–December 2005. Based on both AOD550 and FM values three main aerosol types have been discriminated corresponding to urban/industrial aerosols, clean maritime conditions, and coarse-mode, probably desert dust, particles. Five main sectors were identified for the classification of the air-mass trajectories, which were further used in the analysis of the (AOD550 and FM data for the three aerosol types). The HYSPLIT model was used to compute back trajectories at three altitudes to investigate the relation between AOD550-FM and wind sector depending on the altitude. The accumulation of local pollution is favored in spring and corresponds to air masses at lower altitudes originating from Eastern Europe and the Balkan. Clean maritime conditions are rare over Athens, limited in the winter season and associated with air masses from the Western or Northwestern sector. The coarse-mode particles origin seems to be more complicated proportionally to the season. Thus, in summer the Northern sector dominates, while in the other seasons, and especially in spring, the air masses belong to the Southern sector enriched with Saharan dust aerosols. |
| format | Article |
| id | doaj-art-c536ba637ac045629f9219a41ba529ba |
| institution | Kabale University |
| issn | 1687-9309 1687-9317 |
| language | English |
| publishDate | 2010-01-01 |
| publisher | Wiley |
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| series | Advances in Meteorology |
| spelling | doaj-art-c536ba637ac045629f9219a41ba529ba2025-02-03T06:11:21ZengWileyAdvances in Meteorology1687-93091687-93172010-01-01201010.1155/2010/168346168346Identification of the Aerosol Types over Athens, Greece: The Influence of Air-Mass TransportD. G. Kaskaoutis0P. G. Kosmopoulos1H. D. Kambezidis2P. T. Nastos3Atmospheric Research Team, Institute for Environmental Research and Sustainable Development, National Observatory of Athens, Lofos Nymphon, P.O. Box 20048, 11810 Athens, GreeceDepartment of Geology and Geo-Environment, University of Athens, University Campus, 15784 Zografou, GreeceAtmospheric Research Team, Institute for Environmental Research and Sustainable Development, National Observatory of Athens, Lofos Nymphon, P.O. Box 20048, 11810 Athens, GreeceDepartment of Geology and Geo-Environment, University of Athens, University Campus, 15784 Zografou, GreeceAerosol optical depth at 550 nm (AOD550) and fine-mode (FM) fraction data from Terra-MODIS were obtained over the Greater Athens Area covering the period February 2000–December 2005. Based on both AOD550 and FM values three main aerosol types have been discriminated corresponding to urban/industrial aerosols, clean maritime conditions, and coarse-mode, probably desert dust, particles. Five main sectors were identified for the classification of the air-mass trajectories, which were further used in the analysis of the (AOD550 and FM data for the three aerosol types). The HYSPLIT model was used to compute back trajectories at three altitudes to investigate the relation between AOD550-FM and wind sector depending on the altitude. The accumulation of local pollution is favored in spring and corresponds to air masses at lower altitudes originating from Eastern Europe and the Balkan. Clean maritime conditions are rare over Athens, limited in the winter season and associated with air masses from the Western or Northwestern sector. The coarse-mode particles origin seems to be more complicated proportionally to the season. Thus, in summer the Northern sector dominates, while in the other seasons, and especially in spring, the air masses belong to the Southern sector enriched with Saharan dust aerosols.http://dx.doi.org/10.1155/2010/168346 |
| spellingShingle | D. G. Kaskaoutis P. G. Kosmopoulos H. D. Kambezidis P. T. Nastos Identification of the Aerosol Types over Athens, Greece: The Influence of Air-Mass Transport Advances in Meteorology |
| title | Identification of the Aerosol Types over Athens, Greece: The Influence of Air-Mass Transport |
| title_full | Identification of the Aerosol Types over Athens, Greece: The Influence of Air-Mass Transport |
| title_fullStr | Identification of the Aerosol Types over Athens, Greece: The Influence of Air-Mass Transport |
| title_full_unstemmed | Identification of the Aerosol Types over Athens, Greece: The Influence of Air-Mass Transport |
| title_short | Identification of the Aerosol Types over Athens, Greece: The Influence of Air-Mass Transport |
| title_sort | identification of the aerosol types over athens greece the influence of air mass transport |
| url | http://dx.doi.org/10.1155/2010/168346 |
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