EPA Black Carbon Report to Congress Report due Congress 3/11, delivered 3/2012 Arctic warming driver of climate change Adverse health effects of BC & PM Covers fire extensively- US & Global Prescribed fire control strategies “Biomass burning” is a major contributor and focus for control worldwide

Figure A. BC Emissions by Major Source Category Figure A. BC Emissions by Major Source Category. (Source: Lamarque et al., 2010 and U.S. EPA)

Transport of Black Carbon to the Arctic Depends on: Source location Plume injection height Timing with respect to weather patterns Other factors (like rain out, chemistry)

% Days with Any Transport Potential Focusing only on the ability of the atmosphere to transport the emissions to the Arctic

Springtime Transport Potential The relative importance of a source for impactsing the Arctic depends on the relative source strength and the ability for the emission to be transported to the Arctic Rx Fire Emissions 2008-2011 % Mar-May days with Transport

Daily Forecasts

Trajectory Modeling 30 yrs (1980-2009) ~2000 CONUS starting locations at multiple plume heights Source agnostic (can be used to examine any emissions source type)