A cold start of the melt season and a subsequent warm peak can explain the pattern in the figure. (realclimate.org)
In fact, it is possible that even the extra warmth around the natural warm peaks will be entirely beneficial. (newclimatemodel.com)
In contrast, the scenario in Fig. 5A, with global warming peaking just over 1 °C and then declining slowly, should allow summer sea ice to survive and then gradually increase to levels representative of recent decades. (journals.plos.org)