Global climate change is "very likely"

Humans blamed for climate change

Global climate change is "very likely" to have a human cause, an influential group of scientists has concluded.

The Intergovernmental Panel on Climate Change (IPCC) said temperatures were probably going to increase by 1.8-4C (3.2-7.2F) by the end of the century.

It also projected that sea levels were most likely to rise by 28-43cm, and global warming was likely to influence the intensity of tropical storms.

The findings are the first of four IPCC reports to be published this year.

"We can be very confident that the net effect of human activity since 1750 has been one of warming," co-lead author Dr Susan Soloman told delegates in Paris.

IPCC PROJECTIONS
Probable temperature rise between 1.8C and 4C
Possible temperature rise between 1.1C and 6.4C
Sea level most likely to rise by 28-43cm
Arctic summer sea ice disappears in second half of century
Increase in heatwaves very likely
Increase in tropical storm intensity likely