Colder Arctic temperatures in the melt season vs. GISS temperatures.
GISS use a 1200 km radius for the temperatures measured from land temperature stations. The 1200 km radius is also applied to the coastal land/city/Airport temperature stations thus "covering" up to 1200 km over the oceans. GISS for example "covers" the Arctic ocean from land stations. Fig1 From DMI we learn, that Arctic 80N-90N temperatures in the…