The following article discusses another two factors in melting of antarctic glaciers, including foehn winds and ocean currents: When warm winds blow in Antarctica's dark, freezing winter. (skepticalscience.com)
Warm conditions in the Kara Sea were consistent with low pressure centered over the Barents Sea, together with high pressure over Greenland that brought warm winds from the south. (arcus.org)
El Niño patterns (a warm eastern tropical Pacific) are associated with warmer winds and less ice; the opposite is true for La Niña. (nsidc.org)