Methane emissions from wildfires in Siberia caused by the atmospheric blocking in the summertime

Olga Yu. Antokhina; Pavel N. Antokhin; Yuliya V. Martynova

doi:10.1117/12.2538657

18 December 2019 Methane emissions from wildfires in Siberia caused by the atmospheric blocking in the summertime

Olga Yu. Antokhina, Pavel N. Antokhin, Yuliya V. Martynova

Proceedings Volume 11208, 25th International Symposium on Atmospheric and Ocean Optics: Atmospheric Physics; 112086N (2019) https://doi.org/10.1117/12.2538657
Event: XXV International Symposium, Atmospheric and Ocean Optics, Atmospheric Physics, 2019, Novosibirsk, Russian Federation

Abstract

It is shown that in the Siberian region the most intense fires are associated with atmospheric blocking (blocks), as well as the processes of Rossby waves breaking (RWB). Blocks and RWB in Siberia and Russian Far East in summertime both cause high temperatures, low humidity, and the decrease of clouds. Methane emissions from wildfires in Western Siberia during periods of atmospheric blocking are studied based on the Global Fire Assimilation System (GFAS) and the Global Fire Emissions Database (GFED). Both datasets have shown a sharp increase in methane emissions during or a few days after blocks. Methane emissions associated with blocks are higher according to GFAS data, compared to GFED. Even though for both datasets, there are problems with the correction of cloudiness, for GFAS, the problem of identification and correction of hot spot associated with gas flaring is probably more significant.

Citation Download Citation

Olga Yu. Antokhina, Pavel N. Antokhin, and Yuliya V. Martynova "Methane emissions from wildfires in Siberia caused by the atmospheric blocking in the summertime", Proc. SPIE 11208, 25th International Symposium on Atmospheric and Ocean Optics: Atmospheric Physics, 112086N (18 December 2019); https://doi.org/10.1117/12.2538657

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KEYWORDS

Methane

Databases

Combustion

Carbon monoxide

Atmospheric particles

Carbon

Solar radiation

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