Lead Authors:
Alexander N. Hristov, The Pennsylvania State University
Jane M. E. Johnson, USDA Agricultural Research Service
Contributing Authors:
Charles W. Rice, Kansas State University
Molly E. Brown, University of Maryland
Richard T. Conant, Colorado State University
Stephen J. Del Grosso, USDA Agricultural Research Service
Noel P. Gurwick, U.S. Agency for International Development
C. Alan Rotz, USDA Agricultural Research Service
Upendra M. Sainju, USDA Agricultural Research Service
R. Howard Skinner, USDA Agricultural Research Service
Tristram O. West, DOE Office of Science
Benjamin R. K. Runkle, University of Arkansas
Henry Janzen, Agriculture and Agri-Food Canada
Sasha C. Reed, U.S. Geological Survey
Nancy Cavallaro, USDA National Institute of Food and Agriculture
Gyami Shrestha, U.S. Carbon Cycle Science Program and University Corporation for Atmospheric Research
Science Lead:
Sasha C. Reed, U.S. Geological Survey
Review Editor:
Rachel Melnick, USDA National Institute of Food and Agriculture
Federal Liaisons:
Nancy Cavallaro, USDA National Institute of Food and Agriculture
Carolyn Olson (former), USDA Office of the Chief Economist



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  1. 4 Estimated 95% confidence interval lower and upper uncertainty bounds for agricultural GHG emissions: –11% and +18% (CH4 emissions from enteric fermentation) and –18% and +20% and –16% and +24% (CH4 and N2O emissions from manure management, respectively; U.S. EPA 2018).

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