Chairman of the Intergovernmental Panel on Climate Change, Rajendra Pachauri, talks to the media Thursday during a press conference at the European Parliament in Brussels. (Thierry Charlier/Assoicated Press)

The United Nations will conduct its own investigation into emails leaked from a leading British climate science centre in addition to the probe by the University of East Anglia, a senior UN climate official said Friday.

Emails stolen from the climate unit at the University of East Anglia appeared to show some of world's leading scientists discussing ways to shield data from public scrutiny and suppress others' work.

Those who deny the influence of man-made climate change have seized on the correspondence to argue that scientists have been conspiring to hide evidence about global warming.

In an interview with BBC Radio, the chairman of the Intergovernmental Panel on Climate Change, Rajendra Pachauri, said the issue raised by the emails was serious and said "we will look into it in detail."

"We will certainly go into the whole lot and then we will take a position on it," he said. "We certainly don't want to brush anything under the carpet."

Science defended

The University of East Anglia has defended the integrity of the science published by the climate unit and its researchers, but on Thursday said it would investigate whether some of the data had been fudged. Phil Jones, the director of the unit, stepped down earlier in the week pending the result of the investigation.

East Anglia said its review will examine the emails and other information "to determine whether there is any evidence of the manipulation or suppression of data which is at odds with acceptable scientific practice."

The theft of the emails and their publication online — only weeks before the UN summit on global warming — has been politically explosive, even if researchers say their content has no bearing on the principles of climate change itself.

Britain's Ed Miliband, the climate change secretary, acknowledged the revelations may have an impact on the Copenhagen talks on a new global emissions reduction pact, but dismissed as "flat Earth-ers" critics who claim the emails are proof the case for man-made climate change is exaggerated.

"We need maximum transparency, including about all the data, but it's also very, very important to say one chain of emails, potentially misrepresented, does not undo the global science," Miliband said Friday. "I think we want to send a very clear message to people about that."

"There will be people that want to use this to try and undermine the science and we're not going to let them," he said.

Republicans in the U.S. House of Representatives have grilled government scientists on the leaked emails in a hearing Wednesday in Washington, but the scientists countered that the emails don't change the fact that the Earth is warming.

"The emails do nothing to undermine the very strong scientific consensus … that tells us the Earth is warming, that warming is largely a result of human activity," said Jane Lubchenco, head of the National Oceanic and Atmospheric Administration.

She said the emails don't address data from her agency or the U.S. space agency NASA, which both keep independent climate records that show dramatic global warming.