The basal ice melt rate at D was 0.0026 m d 21 from 21 June to 11 November 2013, which was balanced by the oceanic heat flux of 7.7 W m 22 . In contrast, site A had a near double basal melt rate of 0.005 m d 21 from 25 April to 24 July 2011 as it drifted from 80.418N to 72.318N, which was balanced by the oceanic heat flux of 14.4 W m 22 .