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Webinar: Where does all the carbon go? Piecing together the North American carbon puzzle from a synthesis of top-down and bottom-up estimates.

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Tuesday, 21 May 2019, 12:00

Tuesday, May 21, 2019. 12:00PM. Webinar: Where does all the carbon go? Piecing together the North American carbon puzzle from a synthesis of top-down and bottom-up estimates. Daniel J. Hayes, University of Maine and Rodrigo Vargas, University of Delaware. Sponsored by NOAA. More information here.

 

Scientific information quantifying and characterizing regional-to-global scale carbon cycling is necessary for developing national and international policy on climate change impacts, mitigation and adaptation. In this presentation, we show how we can piece together the various components of the North American carbon budget from multiple constraints on continental-scale estimates of the major stocks and flows. Our analysis synthesizes bottom-up estimates of stock change over the past decade among carbon pools of the major land sectors (forests and wood products, agricultural soils, grasslands, wetlands, and arctic-boreal ecosystems) and lateral transfers along the terrestrial-aquatic system (inland waters, tidal wetlands, estuaries and the coastal ocean). Using a simple but comprehensive and consistent budget accounting framework, we reconcile the various bottom-up assessments into an overall estimate of net land-atmosphere exchange of carbon from North America's land and coastal ocean to the atmosphere, and compare this estimate with top-down estimates for the continent over the last decade.

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