There could also be a direct solar heat input to local heat stores, and possibly also some from geothermal sources. (environmentalresearchweb.org)
As dark ocean surfaces absorb more light than white ice surfaces, solar heat input through the open water melts sea ice, increasing both open water areas and heat input and thus accelerating sea ice melt. (sciencedaily.com)
Among these differences are the atmosphere's ability to adjust rapidly to local conditions of solar heat input; the lack of oceans, which on Earth have a... (britannica.com)