, July 2 -- A leading climate scientist has challenged a US government report that questions the role of human activity in global warming, saying it misrepresented his research and contains major scientific errors.

Prof Benjamin Santer, an honorary professor at the University of East Anglia (UEA), said the US Department of Energy (DOE) report made "demonstrably incorrect" claims about climate science.

Santer was among the first scientists to identify a clear human "fingerprint" on Earth's climate. His research played a key role in the landmark 1995 report by the Intergovernmental Panel on Climate Change (IPCC), which concluded that human activity was having a measurable impact on the global climate.

However, a DOE report released in Ju...