Airborne ammonia concentrations in areas of two EANET stations in Baikal region derived from EANET monitoring and satellite measurementsстатья

Дата последнего поиска статьи во внешних источниках: 30 сентября 2020 г.

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[1] Trifonova-Yakovleva A., Gromov S. Airborne ammonia concentrations in areas of two eanet stations in baikal region derived from eanet monitoring and satellite measurements // EANET Science Bulletin. — 2020. — Vol. 5. — P. 145–151. Satellite data allows to assess spatial distribution of air pollutants and to evaluate regions with higher and lower concentrations. Total amount of gaseous ammonia retrieved from satellite Infrared Atmospheric Sounding Interferometer (IASI) measurements was recalculated with help of modelling vertical profile to obtain its surface concentrations. The results were compared with EANET monitoring data for proper use and interpretation of remote sensing data. We found a good agreement between mean levels of two mentioned types of measurement results for both Listvyanka and Mondy station areas. NH3 pollution levels at Listvyanka are closer to the concentration values retrieved from remote sensing data above water more than above land. Mean seasonal ammonia concentrations from IASI measurements were calculated for the area surrounding the stations for the years from 2015 to 2017. It was recognized that mean summer and autumn concentrations of ammonia are very high at several places and reach up to 14 ppb. The locations of such regions coincide with places of forest fires happened during the years of interest. However mean concentrations at both EANET stations did not exceed 5 ppb and were at the same level of air pollution as for majority of considered region.

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