"There now is no doubt in the scientific community that the Arctic ice cap is melting, and that this is due to man-made global warming."This is nonsense.Man-made global warming is a theory which is increasingly at variance with the facts;there has been no statistically significant global warming for at least a decade. There is no consensus and just repeating a statement does not make it true.
"The Arctic Ocean covers 5,427,000 square miles. Catlin 2010 has seen maybe ten square miles of it, meaning they have sampled less than 0.0002% of the ice. They also choose to travel on refrozen leads because they are flatter and smoother, so their sampling is not random. No serious scientist would attempt to draw any conclusions about the quality of the ice based on a cherry picked sample representing less than 0.0002% of the Arctic" Taken from Watts up With That to provide some balance.