Using SEVIRI fire observations to drive smoke plumes in the CMAQ air quality model: The case of Antalya in 2008

G. Baldassarre*, L. Pozzoli, C. C. Schmidt, A. Unal, T. Kindap, W. P. Menzel, S. Whitburn, P. F. Coheur, A. Kavgaci, J. W. Kaiser

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Özet

Among the atmospheric emission sources, wildfires are episodic events characterized by large spatial and temporal variability. Therefore, accurate information on fire gaseous and aerosol emissions for specific regions and seasons is critical for air quality forecasts. The Spinning Enhanced Visible and Infrared Imager (SEVIRI) in geostationary orbit provides fire observations over Africa and the Mediterranean with a unique temporal resolution of 15min. It thus resolves the complete fire life cycle and captures the fires' peak intensities, which is not possible in MODIS-based fire emission inventories like GFAS. We evaluate two different operational Fire Radiative Power (FRP) products derived from SEVIRI, by studying the case of a large forest fire in Antalya, Turkey, in July-August 2008. The EUMETSAT LSA SAF product has higher FRP values during the fire episode than the WF-ABBA product. It is also in better agreement with the colocated, gridded MODIS FRP. Both products miss small fires that frequently occur in the region and are detected by MODIS. Emissions are derived from the FRP products. They are used along-side GFAS emissions in smoke plume simulations with WRF and the Community Multiscale Air Quality model (CMAQ). Comparisons with MODIS AOT and IASI CO and NH3 observations show that including the diurnal variability of fire emissions improves the spatial distribution and peak concentrations of the simulated smoke plumes associated to the large fire. They also show a large discrepancy between the currently available operational FRP products, with the LSA SAF one being the most appropriate.

Orijinal dilİngilizce
Sayfa (başlangıç-bitiş)1-46
Sayfa sayısı46
DergiAtmospheric Chemistry and Physics Discussions
Hacim15
Basın numarası1
DOI'lar
Yayın durumuYayınlandı - 6 Oca 2015

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Publisher Copyright:
© Author(s) 2015. CC Attribution 3.0 License.

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