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ISSN 2070-7401 (Print), ISSN 2411-0280 (Online)
Sovremennye problemy distantsionnogo zondirovaniya Zemli iz kosmosa
CURRENT PROBLEMS IN REMOTE SENSING OF THE EARTH FROM SPACE

  

Sovremennye problemy distantsionnogo zondirovaniya Zemli iz kosmosa, 2025, Vol. 22, No. 2, pp. 202-213

Fire radiative power in the Arctic zone of Siberia depending on weather conditions

A.V. Malkanova 1, 2 , P.D. Tretyakov 1, 2 , E.I. Ponomarev 1, 2 
1 Krasnoyarsk Science Center SB RAS, Krasnoyarsk, Russia
2 Siberian Federal University, Krasnoyarsk, Russia
Accepted: 19.03.2025
DOI: 10.21046/2070-7401-2025-22-2-202-213
We have examined the variability of wildfire radiation using the FRP (Fire Radiative Power) technology for fires in the Arctic zone of Siberia (64–74° N, 60–150° E). The work was performed based on the standard MOD14 product of the Terra and Aqua satellite systems for the period 2001–2023. Maximum radiation power resulting from fires was recorded in the eastern part of the Arctic zone where larch stands dominate. These values exceed twice the FRP values observed in the subregions of the western Siberian Arctic zone. In fire seasons with extreme weather conditions, the average FRP per pixel is 11.7–13.0 % higher than it is in seasons with low fire hazard in most of the studied subregions. The correlation between the FRP and the level of weather fire danger PV-1 (Moisture Index), as well as the interseasonal dynamics of the hydrothermal coefficient (HTC), were examined. PV-1 has a closer relationship with FRP (r = 0.7 at p < 0.05) than HTC with FRP (r = –0.5 at p < 0.05). Spatial extrapolation by means of GIS indicates that, in the period observed, positive dynamics of fire radiative power is typical for 21–56 % of the Arctic zone of Siberia, while the eastern part of the region is characterized by the greatest spread of FRP growth, up to 42–56 % of the studied territory.
Keywords: Arctic zone of Siberia, fire radiation power, FRP, hydrothermal coefficient, HTC, PV-1, relative burned area
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