Determination of the Energy Properties of Wildfires in Siberia by Remote Sensing

Тип публикации: статья из журнала

Год издания: 2018

Идентификатор DOI: 10.1134/S000143381809030X

Ключевые слова: active fire zone, crown fire, fire radiative power, sub-pixel analysis, vegetation fire

Аннотация: Abstract: As applied to the conditions of wildfires in Siberia, remote sensing is adapted to record the radiation power from the active fire zone in the range of 3.929–3.989 μm (Terra/MODIS data). The limits of variation of the detected values ​​of heat radiation are evaluated. Sporadic peaks that exceed the mean value of heat radiation in the fire field by a value of 2.5σ were correlated with high-intensity fires, including crown fires. The probability of remote fire detection in crown stage was no less than 65%. The quantitative dependence of the Fire Radiative Power (FRP) on the area of ​​the active zone was determined using a subpixel analysis. The fraction of forest fires in Siberia with areas of extreme heat radiation is shown to be 5.5 ± 1.2% of the total wildfires. The total area of ​​high-intensity wildfires including crown fires is at least 8.5% of the average annual wildfire area and reaches values ​​of 15–25% during extreme fire seasons. © 2018, Pleiades Publishing, Ltd.

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Издание

Журнал: Izvestiya - Atmospheric and Ocean Physics

Выпуск журнала: Vol. 54, Is. 9

Номера страниц: 979-985

ISSN журнала: 00014338

Издатель: Pleiades Publishing

Авторы

  • Ponomarev E.I. (Russian Acad Sci, VN Sukachev Inst Forest, Krasnoyarsk Sci Ctr, Fed Res Ctr,Siberian Branch, Krasnoyarsk 660036, Russia; Siberian Fed Univ, Krasnoyarsk 660041, RussiaArticle)
  • Shvetsov E.G. (Russian Acad Sci, VN Sukachev Inst Forest, Krasnoyarsk Sci Ctr, Fed Res Ctr,Siberian Branch, Krasnoyarsk 660036, Russia)
  • Usataya Yu. O. (Siberian Fed Univ, Krasnoyarsk 660041, RussiaArticle)

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