Quantification of Fuel Moisture Effects on Biomass Consumed Derived from Fire Radiative Energy Retrivals
Satellite based ﬁre radiant energy retrievals are widely applied to assess biomass consumed and emissions at regional to global scales. A known potential source of uncertainty in biomass burning estimates arises from fuel moisture but this impact has not been quantiﬁed in previous studies. Controlled ﬁre laboratory experiments are used in this study to examine the biomass consumed and the radiant energy release (Fire Radiative Energy, FRE, (MJ)) for western white pine needle fuels burned with water content (WC, unitless) from 0.01 to 0.14. Results indicate a signiﬁcant re lationship: FRE per kilogram of fuel consumed = -5.32 W C+3.025(r2=0.83, n = 24, P < 0.001) and imply that not taking into account fuel moisture variations in the assumed relationship between FRE and fuel consumed can lead to systematic biases. A methodological framework to derive a revised formula that enables the estimation of biomass consumed from FRE, which explicitly takes into account fuel water content, is presented.
Geophysical Research Letters
DOI of Published Version
American Geophysical Union
Smith, Alistair M. S.; Tinkham, Wade T.; Roy, David P.; Boschetti, Luigi; Kremens, Robert L.; Kumar, Snath S.; Sparks, Aaron M.; and Falkowski, Michael J., "Quantification of Fuel Moisture Effects on Biomass Consumed Derived from Fire Radiative Energy Retrivals" (2013). GSCE Faculty Publications. 48.