The latest debate on climate science to emerge centres on a paper that suggests humans played no role in the recent warming trend and that El Nino activity is mostly to blame.
But a group of climate scientists say that is false, misleading and that the data has been manipulated by climate deniers.
Central to the paper, published in the journal of Geophysical Research last July
, was that the southern oscillation index, which is a measure of El Nino activity, was the most likely influence on global temperatures changing.
The senior author of the report, IT analyst John Mclean, says man has had little impact on global warming.
"The major force seems to be probably the southern oscillation, though you've also got to think that maybe that is just an indicator of something else. Whatever's driving the southern oscillation therefore drives temperature," he said.
"Figure seven from our original paper showed there's really not much room in there for man to do anything about it.
"As the temperature's going up and down pretty much in synchronisation with the southern oscillation seven months earlier, I can't see that man plays much role at all."
Mr Mclean says the variability in the southern oscillation index accounts for as much as 70 per cent of the change in global temperature.
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