When the both pole has same temperature(thousands year,million year or billion year ago)
In the antartica,snow accumulate and become ice.After many year,a very thick ice(average 2km) is formed.
But in the Arctic,the sea ice is mostly formed in the winter.I guess,Snow also accumulate on the sea ice and form a thick ice like the ice in the antartica.Why the sea ice's maximum thickness is less than 1km?Simply,why the sea ice cannot be thicker like the ice in the antartica?
If you answer me:
the sea ice will to warmer ocean...
i will reply you:
it is only for drift ice.There are also has multi-year ice or fast ice.They will not float to the warmer ocean.
If you answer me:
the sea ice will melt in the summer..
I will reply you:
the ice in the antartica also will melt.
(DON'T SAY THE SOUTH POLE IS COLDER THAN NORTH POLE...because both pole's temperature are little difference onlt in the thousand...or million year ago..)
SO..WHY???????