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Satellite-based differences in fire regimes between boreal North America and Eurasia
Brendan
M.
Rogers, UC Irvine, Dept. of Earth System Science, bmrogers@uci.edu
(Presenter)
James
T.
Randerson, UC Irvine, Dept. of Earth System Science, jranders@uci.edu
Amber
Soja, National Institute of Aerospace / NASA LaRC, amber.j.soja@nasa.gov
Burn area across the circumpolar boreal zone is projected to increase through the 21st century due to higher temperatures and longer growing seasons. By altering carbon budgets, landscape biophysics, and aerosol emissions, changing fire frequencies have the potential to affect high-latitude and global climate in numerous ways. Yet fire characteristics, and thus potential feedbacks, in the two boreal continents are distinctly different, with Eurasia displaying a greater proportion of less-intense surface fires than North America. Here we use over a decade of MODIS satellite products for burn area, fire radiative power, differenced Normalized Burn Ratio (dNBR), tree cover, albedo, and land surface temperature to quantify differences in boreal fire behavior and effects on varying time scales. This collection of data streams allows for the quantification of fire intensity, fire severity, and burn severity, all of which carry implications for biogeochemical and biophysical feedbacks to climate. Combinations of products are used to derive variables relevant to global models, including crown fires, biomass combustion, and tree mortality.
Presentation Type: Poster
Session: Poster Session 2-A
(Wed 11:00 AM)
Associated Project(s):
Poster Location ID: 71
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