Ice caps are not constrained by topographical features (i.e., they will lie over Sensitivity of Vatnajŏkull ice cap hydrology and dynamics to climate warming A polar ice cap or polar ice sheet is a high-latitude region of a planet or moon Seasonal variations of the ice caps will take place due to varied Ice Cap Melter and Veiwer! Shows drastic melting of Arctic polar sea ice caps form 1979 to 2003. inveractively melt polar ice caps over a twenty five year period. Scientists have suspected in recent year that Mars is undergoing some sort of global warming. New date points to the possibility it is emerging from an ice age.Will Arctic ice melt have any effects beyond the polar region? Answers to questions about the Arctic's shrinking ice cap and its global significance.