A panel of multi-national scientists has reportedly found human activity to be at the root of most of the globe's rise in temperatures over past decades, the New York Times reported.

The panel also warned the sea level could also continue to rise by about three feet by the end of the century if the current upward trend in climate remains. The panel's findings will be part of a draft summary in an upcoming United Nations climate report.

"It is extremely likely that human influence on climate caused more than half of the observed increase in global average surface temperature from 1951 to 2010," the draft report says. "There is high confidence that this has warmed the ocean, melted snow and ice, raised global mean sea level and changed some climate extremes in the second half of the 20th century."

The report refutes a recent slowing of the climate's escalation, which was commonly pointed to by global warming skeptics. The scientists said the consequences of climbing emissions are serious.

The draft report will come from the Intergovernmental Panel on Climate Change (IPCC), a group of hundreds of scientists who are widely viewed as the authority on global climate change, with reports published every five years or so. The group, along with Al Gore, won the Nobel Peace Prize in 2007.

The IPCC's 2007 report was "90 percent sure" human activity was responsible for global warming, but the new summary is reportedly 95 percent sure. Their reports are not done with their own research, but rather take a cumulative look at existing work on climate change.

In 2007, the panel took criticism for making such bold statements about the climate and for some slight flaws in the report. This time, an IPCC spokesman said, the panel will be much more thorough with its report.

The draft document "is likely to change in response to comments from governments received in recent weeks and will also be considered by governments and scientists at a four-day approval session at the end of September," the panel's spokesman, Jonathan Lynn, said in a statement Monday. "It is therefore premature and could be misleading to attempt to draw conclusions from it."