[5] There are other summits relating to the underlying volcano with two being at 1,765 m (5,791 ft).

[7] While all ice caps in Iceland have been losing volume since 1995, due to high precipitation in 2015 and low ablation during the previous cool summer, the Hofsjökull ice cap increased in mass, the first time in 20 years this had happened.

[8] Between 1989 and 2015, even allowing for that last years increase, the icecap had lost about 12% of its 1989 volume which is close to 25 km3 (6.0 cu mi) of ice.

[9] Hofsjökull has been modelled to lose all its ice in about 200 years from studies using data between 1980 and 2005.

[10] Run off into the draining rivers is modelled to increase by about 50% by 2100 before decreasing due to diminishing area of the ice caps.