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| Titel |
Tracking of urban aerosols using combined LIDAR-based remote sensing and ground-based measurements |
| VerfasserIn |
T.-Y. He, S. Stanič, F. Gao, K. Bergant, D. Veberič, X.-Q. Song, A. Dolžan |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1867-1381
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| Digitales Dokument |
URL |
| Erschienen |
In: Atmospheric Measurement Techniques ; 5, no. 5 ; Nr. 5, no. 5 (2012-05-02), S.891-900 |
| Datensatznummer |
250002855
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| Publikation (Nr.) |
 copernicus.org/amt-5-891-2012.pdf |
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| Zusammenfassung |
| A measuring campaign was performed over the neighboring towns of Nova
Gorica in Slovenia and Gorizia in Italy on 24 and 25 May 2010, to
investigate the concentration and distribution of urban aerosols.
Tracking of two-dimensional spatial and temporal aerosol distributions
was performed using scanning elastic LIDAR, operating at
1064 nm. In addition, PM10 concentrations of
particles, NOx concentrations and meteorological data were
continuously monitored within the LIDAR scanning region.
Based on the data we collected, we investigated the flow dynamics and
the aerosol concentrations within the lower troposphere and found an
evidence for daily aerosol cycles.
We observed a number of cases with spatially localized increased LIDAR
returns, which are associated with the presence of point sources of
particulate matter. Daily aerosol concentration cycles were also
clearly visible with a peak in aerosol concentration during the
morning rush hours and daily plateau at around 17:00 Central European
Time.
We also found that horizontal atmospheric extinction at the height of
200 m, averaged in limited region with a radius of
300 m directly above the ground-based measuring site, was
linearly correlated to the PM10 concentration with a
correlation coefficient of 0.84. When considering the average of the
horizontal atmospheric extinction over the entire scanning region, a
strong dependence on traffic conditions (concentration of NOx)
in the vicinity of the ground-based measuring site was observed. |
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