Item Link: Read Article
Media Type: Report / Policy Brief
Date of Publication: November 3, 2017
Year of Publication: 2017
Publication City: Washington, DC
Publisher: U.S. Global Climate Change Research Program
Author(s): D..J. Wuebbles, D.W. Fahey, K.A. Hibbard, B. DeAngelo, S. Doherty, K. Hayhoe, R. Horton, J.P. Kossin, P.C. Taylor, A.M. Waple, C.P. Weaver
Fourth National Climate Assessment (NCA4), Volume I
This report is an authoritative assessment of the science of climate change, with a focus on the United States. It represents the first of two volumes of the Fourth National Climate Assessment, mandated by the Global Change Research Act of 1990.
“This assessment concludes, based on extensive evidence, that it is extremely likely that human activities, especially emissions of greenhouse gases, are the dominant cause of the observed warming since the mid-20th century. For the warming over the last century, there is no convincing alternative explanation supported by the extent of the observational evidence.”
You can access the full report here.