Fourth National Climate Assessment: Volume I, Climate Science Special Report

The Global Change Research Act of 1990 mandates that the U.S. Global Change Research Program (USGCRP) deliver a report to Congress and the President no less than every four years that (1) integrates, evaluates, and interprets the findings of the Program; (2) analyzes the effects of global change on the natural environment, agriculture, energy production and use, land and water resources, transportation, human health and welfare, human social systems, and biological diversity; and (3) analyzes current trends in global change, both human-induced and natural, and projects major trends for the subsequent 25 to 100 years. The Fourth National Climate Assessment (NCA4) fulfills that mandate in two volumes. As Volume I of NCA4, this document serves several purposes, including providing (1) an updated detailed analysis of the findings of how climate change is affecting weather and climate across the United States; (2) an executive summary and other Climate Science Special Report (CSSR) materials that provide the basis for the discussion of climate science found in the second volume of the NCA4; and (3) foundational information and projections for climate change, including extremes, to improve “end-to-end” consistency in sectoral, regional, and resilience analyses within the second volume. This volume integrates and evaluates the findings on climate science and discusses the uncertainties associated with these findings. It analyzes current trends in climate change, both human-induced and natural, and projects major trends to the end of this century.


  • English

Media Info

  • Media Type: Digital/other
  • Features: Appendices; Figures; Glossary; Maps; Photos; References; Tables;
  • Pagination: 477p

Subject/Index Terms

Filing Info

  • Accession Number: 01687067
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Nov 26 2018 1:55PM