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1 Department of Chemistry York 2 TACT - LATMOS LATMOS - Laboratoire Atmosphères, Milieux, Observations Spatiales 3 Spectroscopie de l-atmosphère, Service de Chimie Quantique et Photophysique 4 Department of Chemistry and Biochemistry Norfolk

Abstract : To further our understanding of the effects of biomass burning emissions on atmospheric composition, we report measurements of trace species in biomass burning plumes made by the Atmospheric Chemistry Experiment Fourier Transform Spectrometer ACE-FTS instrument on the SCISAT-1 satellite. An extensive set of 15 molecules, C2H2, C2H6, CH3OH, CH4, CO, H2CO, HCN, HCOOH, HNO3, NO, NO2, N2O5, O3, OCS and SF6 are used in our analysis. Even though most biomass burning smoke is typically confined to the boundary layer, some of these emissions are injected directly into the free troposphere via fire-related convective processes and transported away from the emission source. Further knowledge of the aging of biomass burning emissions in the free troposphere is needed. Tracer-tracer correlations are made between known pyrogenic species in these plumes in an effort to characterize them and follow their chemical evolution. Criteria such as age and type of biomass material burned are considered.





Autor: K. A. Tereszchuk - G. González Abad - Cathy Clerbaux - D. Hurtmans - P.-F. Coheur - P. F. Bernath -

Fuente: https://hal.archives-ouvertes.fr/



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