Dr. Gyami Shrestha, Director of USGCRP’s Carbon Science Program Office, presented a talk on the Program, the CCIWG and the US carbon science community's guide for the next decade of US carbon  cycle science, a 2011 Carbon Science Plan, at the Department of Energy's (DOE's) Terrestrial Ecosystem Science (TES) Principal Investigators' meeting held in Washington, D.C. from April 23-24, 2012. The Chair of the National Climate Assessment and Development Advisory Committee (NCADAC), Dr. Jerry Melillo of the Marine Biological Laboratory presented an overview of USGCRP’s National Climate Assessment and its review process. In addition to DOE and other agency staff, more than 150 U.S. scientists and doctoral students participated in this meeting to showcase their DOE-TES funded carbon science project achievements. Project highlights, including interagency collaborations with other agencies such as the US Geological Survey (USGS) and US Forest Service (USFS), at this meeting included talks on carbon and energy balances and climate induced changes of dryland biota, long-term carbon flux patterns in coniferous forests, GoAmazon 2014, NGEE-Arctic, the Forest-Atmosphere Carbon Transfer and Storage (FACE) experiments and Spruce and Peatland Responses Under Climatic and Environmental Change (SPRUCE). The DOE TES Program Director, SGCR Principal and CCIWG co-chair Dr. Michael Kuperberg led the organization of this meeting.