Long-range transport of PM10 Part 1. /
The purpose of this study is to identify long-range transport patterns that may have an important influence on PM10 levels in four European cities at different latitudes, namely those in Thessaloniki, Szeged, Helsinki and Oulu. Trajectory positions were computed using the HYSPLIT model. 4-day, 6-hou...
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| Main Authors: | |
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| Format: | Article |
| Published: |
2009
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| Series: | Acta climatologica
42-43 |
| Kulcsszavak: | Cluster-analízis |
| Subjects: | |
| Online Access: | http://acta.bibl.u-szeged.hu/16923 |
| Summary: | The purpose of this study is to identify long-range transport patterns that may have an important influence on PM10 levels in four European cities at different latitudes, namely those in Thessaloniki, Szeged, Helsinki and Oulu. Trajectory positions were computed using the HYSPLIT model. 4-day, 6-hourly 3D backward trajectory positions arriving at these locations at 1200 GMT were determined for each day over a 5-year period from 2001 to 2005. Non-hierarchical cluster analysis with the k-means method was applied using a Mahalanobis metric. The efficiency of the 2D and 3D cluster analyses were compared for each city. |
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| Physical Description: | 97-106 |
| ISSN: | 0563-0614 |