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| Titel |
Smoke injection heights from agricultural burning in Eastern Europe as seen by CALIPSO |
| VerfasserIn |
V. Amiridis, E. Giannakaki, D. S. Balis, E. Gerasopoulos, I. Pytharoulis, P. Zanis, S. Kazadzis, D. Melas, C. Zerefos |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1680-7316
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| Digitales Dokument |
URL |
| Erschienen |
In: Atmospheric Chemistry and Physics ; 10, no. 23 ; Nr. 10, no. 23 (2010-12-07), S.11567-11576 |
| Datensatznummer |
250008941
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| Publikation (Nr.) |
 copernicus.org/acp-10-11567-2010.pdf |
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| Zusammenfassung |
| High frequency of agricultural fires is observed every year during the
summer months over SW Russia and Eastern Europe. This study investigates the
initial injection height of aerosol generated by the fires over these
regions during the biomass burning season, which determines the potential
for long-range transport of the smoke. This information is critical for
aerosol transport modeling, as it determines the smoke plume evolution. The
study focuses on the period 2006–2008, and is based on observations made by
the CALIOP instrument on board the NASA CALIPSO satellite. MODIS data are
synergistically used for the detection of the fires and the characterization
of their intensity. CALIPSO aerosol vertical distributions generated by the
active fires are analyzed to investigate the aerosol top height which is
considered dependent on the heat generated by the fires and can be
associated with the initial injection height. Aerosol top heights of the
vertically homogenous smoke layers are found to range between 1.6 and 5.9 km.
Smoke injection heights from CALIPSO are compared with mixing layer
heights taken by the European Centre for Medium-range Weather Forecast
(ECMWF), to investigate the direct injection of smoke particles into the
free troposphere. Our results indicate that the aerosol plumes are observed
within the boundary layer for the 50% of the cases examined. For the rest
of the cases, the strong updrafts generated by the fires resulted to smoke
injection heights greater than the ECMWF estimated mixing layer by 0.5 to
3.0 km, indicating a direct smoke injection into the free troposphere. The
smoke injection height showed a dependence on the MODIS-Land Fire Radiative
Power product which is indicative of the fire intensity, especially in the
cases of lower static stability in the upper part of the boundary layer and
the free troposphere. |
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