HR: 09:15h
AN: A11C-06 [PDF]
TI: Seasonal And Interannual Variations Of Biomass Burning Aerosol Sources As Observed With
Satellite
AU: * Generoso, S
EM: generoso@lsce.saclay.cea.fr
AF: Laboratoire des Sciences du Climat et de l'Environnement, CEA/CNRS,
Orme des Merisiers, Gif-sur-Yvette, 91191
France
AU: Breon, F
EM: fmbreon@cea.fr
AF: Laboratoire des Sciences du Climat et de l'Environnement, CEA/CNRS,
Orme des Merisiers, Gif-sur-Yvette, 91191
France
AU: Balkanski, Y
EM: balkansk@lsce.saclay.cea.ff
AF: Laboratoire des Sciences du Climat et de l'Environnement, CEA/CNRS,
Orme des Merisiers, Gif-sur-Yvette, 91191
France
AU: Boucher, O
EM: boucher@loaser.univ-lille1.fr
AF: Laboratoire d'Optique Atmospherique, CNRS, Universite des Sciences et Technologies de Lille,
Villeneuve d'Ascq, 59655
France
AU: Schulz, M
EM: schulz@lsce.saclay.cea.fr
AF: Laboratoire des Sciences du Climat et de l'Environnement, CEA/CNRS,
Orme des Merisiers, Gif-sur-Yvette, 91191
France
AB:
With the objective of improving the representation of biomass burning contribution in aerosol transport models, we have used
satellite observations to constrain the emission seasonal and inter-annual variations in current inventories.
Our primary dataset for the seasonal and inter-annual distribution of biomass burning is the ATSR fire count, derived from
night-time observations of this instrument. This dataset provides a near global coverage over an extended time period
(1996-2002). A comparison to other datasets that cover a more limited area (tropics in the case of TRMM), or are available
over a limited time period (one year for GBA and GLOBSCAR) shows a consistent picture.
Atmospheric transport simulations of the aerosol load, using both the original and the satellite-derived inventories,
compared to optical thickness sunphotometer measurement, allows a quantitative analysis of the method impact. With the
satellite-corrected emission inventories, there is a clear improvement of the seasonal distribution of aerosol load in the
models. In addition, we have selected 3 specific biomass burning event with a long-range transport that is observed by the
spaceborne POLDER for a period of up to 10 days. These episodes are analyzed and demonstrate the forces and deficiencies of
long-range transport in the model.
DE: 0305 Aerosols and particles (0345, 4801)
DE: 0322 Constituent sources and sinks
DE: 1630 Impact phenomena
DE: 1640 Remote sensing
DE: 1803 Anthropogenic effects
SC: Atmospheric Sciences [A]
MN: 2003 Fall Meeting