Reducing carbon emissions from working lands is a critical component of an overall global mitigation strategy and accounting for carbon stocks by land use type is possible with current scientific and computational techniques. However, this mapping has yet to be completed in many parts of the United States, including Hawaii. So, in partnership with the University of Hawaiʻi at Mānoa, University of Hawaiʻi at Hilo, the University of Maryland, NASA, and the Hawaiʻi Climate Change Mitigation and Adaptation Commission, SWCH co-leadership is developing carbon stock and sequestration mapping products – by land-use cover type and activity.