Arctic ice cap 'to disappear in future summers' The Arctic ice cap will disappear completely in summer months within 20 to 30 years, a polar research team said as they presented findings from an expedition led by adventurer Pen Hadow. It is likely to be largely ice-free during the warmer months within a decade, the experts added. Veteran polar explorer Hadow and two other Britons went out on the Arctic ice cap for 73 days during the northern spring, taking more than 6,000 measurements and observations of the sea ice. The raw data they collected from March to May has been analysed, producing some stark predictions about the state of the ice cap. "The summer ice cover will completely vanish in 20 to 30 years but in less than that it will have considerably retreated," said Professor Peter Wadhams, head of the polar ocean physics group at Britain's prestigious Cambridge University.