TY - JOUR A1 - Livina, V. N. A1 - Lenton, T. M. T1 - A recent tipping point in the Arctic sea-ice cover: abrupt and persistent increase in the seasonal cycle since 2007 JO - The Cryosphere J1 - TC VL - 7 IS - 1 SP - 275 EP - 286 Y1 - 2013/02/12 PB - Copernicus Publications SN - 1994-0424 UR - https://tc.copernicus.org/articles/7/275/2013/ L1 - https://tc.copernicus.org/articles/7/275/2013/tc-7-275-2013.pdf DO - 10.5194/tc-7-275-2013 ER -