Scientists say more certain mankind causes global warming
OSLO (REUTERS) - Leading climate scientists said on Friday they were more certain than ever before that mankind was the main culprit for global warming and warned the impact of greenhouse gas emissions would linger for centuries.
A report, by the Intergovernmental Panel on Climate Change (IPCC), played down the fact temperatures have risen more slowly in the past 15 years, saying there were substantial natural variations that masked a long-term warming trend. It said the Earth was set for further warming and more heatwaves, floods, droughts and rising sea levels as greenhouse gases built up in the atmosphere. The oceans would become more acidic in a threat to some marine life.
"It is extremely likely that human influence has been the dominant cause of observed warming since the mid-20th century," according to the summary issued after a weeklong meeting in Stockholm and meant to guide policymakers in shifting towards greener energies from fossil fuels.
"Extremely likely" means a probability of at least 95 per cent, up from 90 per cent in the panel's last report in 2007 and 66 per cent in 2001.