Physics
Scientific paper
Oct 2004
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004georl..3120505w&link_type=abstract
Geophysical Research Letters, Volume 31, Issue 20, CiteID L20505
Physics
9
Global Change: Biogeochemical Processes (4805), Global Change: Remote Sensing, Global Change: Instruments And Techniques, Atmospheric Composition And Structure: Biosphere/Atmosphere Interactions
Scientific paper
Around 5-20 million hectares of boreal forest burns annually, mainly in Russia and North America. However, there are reports of significant differences in predominant fire type between these regions, which may have major implications for overall emissions of carbon, gases and aerosols. We examine boreal forest fire intensities via MODIS observations of fire radiative energy release rate. Results support the contention of a consistent difference in fire intensity and mean fuel consumption in Russia and North America, due to differences in dominant fire type. North American fires have higher mean intensities, increasing in proportion to percentage tree cover, characteristics indicating likely crown fire dominance. Russian fires have lower mean intensities, independent of percentage tree cover, characteristics more indicative of surface fire activity. Per unit area burnt, the results suggest Russian fires may burn less fuel and emit fewer products to the atmosphere than do those in North America.
Wooster Martin J.
Zhang Ying Hui
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