Would the enthalpy of fusion for melting ice fields be a causative factor for colder winter weather?
Would the enthalpy of fusion for melting ice fields be a causative factor for colder winter weather?


No, for a number of reasons.


Ice sheets melt in the summer and rebuild in the winter. This is winter.
The enthalpy of fusion for water is 333.55 joules per gram. Multiply that by 280 gigatons per year and you get 9.3×1016 joules per year. While that sounds like a lot, it's a blip compared to the 5.5×1024 joules the Earth receives from the Sun every year.
It's not a cold winter. While it has been an abnormally cold winter for the eastern parts of the U.S. and Canada, the rest of the northern hemisphere has been rather balmy. Nuuk, Greenland, for example, is suffering a heat wave. The current (06:38 UTC 21 January 2018) temperature there is 3°C (37° F), significantly warmer than average. The normal high for that location at this time of year is -6°C (24° F).


The melting of all that ice might well have an impact on climate, but it's the influx of 280 gigatons (and rising) of fresh water every year into the northern ocean rather than a paltry absorption of 1017 joules of energy every year that will be the cause.