S. Fred Singer Comments on the Proposed Endangerment and Cause or Contribute Findings for Greenhouse Gases

This comment concentrates on TSD Section 5 “Attribution of Observed Climate Change to Anthropogenic Greenhouse Gas Emissions at the Global and Continental Scale.” Since it follows the line of argument of the U.N. IPCC (IPCC) and the U.S. Climate Change Science Program (CCSP), I will actually critique the IPCC report itself as well as the CCSP.

I contrast the title of TSD Section 5 with the NIPCC 2008 Report “Nature, Not Human Activity, Controls the Climate,” which responds to the claims of the UN-IPCC. I submit a copy of this Summary document for the record (http://www.sepp.org/publications/NIPCC_final.pdf ). I also submit the full NIPCC report, which can be accessed at www.nipccreport.org.

The key question is, Is the cause of global warming natural (and therefore unstoppable), or are anthropogenic greenhouse (GH) gases responsible for twentieth century climate changes?

We know of no evidence that supports anthropogenic global warming (AGW), the main conclusion of IPCC (and EPA). EPA’s EF-TSD presents no independent evidence to support the claim that carbon dioxide is a pollutant. This is our principal disagreement with the EPA Endangerment Finding.