Gidan gani na Polar

Polar see-saw (kuma: bipolar seesaw) shine abin da yake faruwa na sauye-sauyen yanayin a arewaci  da kudancin hemispheres na iya zama ba tare da lokaci ba. Maganar ta bayyana cewa manyan canje-canje, misali lokacin da glaciers ke girma sosai ko raguwa, a cikin samar da ruwan teku a cikin yankuna biyu yana ɗaukar lokaci mai tsawo don yin tasiri a ɗayan ɓangaren. Kimanin lokacin jinkiri ya bambanta; ƙididdigar ɗaya ita ce shekaru 1,500. Ana yawan nazarin wannan a cikin mahallin ƙanƙara da aka dauka daga Antarctica da Greenland.

 Dubi kuma 

 Ƙarin Ƙarƙashin Ƙarƙara
 Yanayin yanayi na Arctic
 Yanayin yanayi na Antarctica

 Manazarta