Ammonia concentrations in forest fire plumes from the satellite measurements in Siberia and Russian Far Eastстатья

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[1] Trifonova-Yakovleva A. M., Gromov S. A. Ammonia concentrations in forest fire plumes from the satellite measurements in siberia and russian far east // Материалы конференции Practical Geography and XXI Century Challenges. Thematic Conference dedicated to the Centennial of the Institute of Geography of the Russian Academy of Sciences. — ФГБУН Институт географии РАН Москва, 2018. — P. 232–232. Forest fires are one of the main sources of ammonia emission. Ammonia is an important component of acid deposition. Monitoring of the species is included into global programs watching atmosphere composition. However, ammonia is highly variable in time and space and satellite measurements can provide information for the regions that are not covered by the surface measurement networks. In this study we used ammonia total amount retrieved from IASI/MetOp-A instrument [2]. Infrared Atmospheric Sounding Interferometer (IASI), is a hyperspectral infrared sounder residing on the European Space Agency (ESA) MetOp series of polar orbiting satellites. IASI has high spatial resolution and global coverage. The comparison of the retrieved values with near-surface measurements was done. EANET (Acid Deposition Monitoring Network in East Asia) performs regular and continuous monitoring of acidifying compounds including ammonia in atmosphere since 2000 [1]. Retrieved values are in good coincidence with in situ measurements for stations located in Baikal region and Far East. Satellite data was used to assess levels of ammonia in forest fire plumes in Siberia. Several case studies were considered. It was shown that in retrieved data total ammonia amount in fire plumes are approximately two or more times higher than above clean territory. Total amount was recalculated to near-surface concentrations using a priori profile and compared to in situ measurements in fire plumes [3]. Moreover, statistical analysis of retrieved ammonia time series allows find periods with outstanding high levels of ammonia for several days or weeks. This information can also be used to assess ammonia concentrations for regions suffered from regular forest fires.

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