Draft “Climate Science Special Report” By Scientists And Researchers From 13 Federal Agencies And Several Academic Institutions Notes Greater Than 95% Certainty That “Human Influence” Is Dominant Cause Of Accelerated Global Temperature Rise
A draft climate report developed by scientists and researchers from 13 Federal agencies as well as a variety of academic and research institutions has concluded that “it is extremely likely that human influence has been the dominant cause of the observed warming since the mid-20th century.” “Extremely likely” is defined in the report as 95-100% certainty.
The report predicts temperature rises by 5.0 to 7.5 degrees Fahrenheit by the end of the century, depending on changes to carbon emissions.
CO2 levels in the air have risen dramatically since the late 19th century, from below 300 ppm (parts per million) to well over 400 ppm. The largest increases have occurred over the last 70 years.
The Trump administration has decided to withdraw from the Paris Accords, an alliance that includes all but 3 countries (including the United States) and seeks to reduce global temperature rise.