Sentences with phrase «antarctic circumpolar»

IIRC, the closing off of the isthmus between N and S america explains some changes, and the seperation of SA from the Antarctic some 40 million years ago allowed the formation of the antarctic circumpolar current which then allowed the formation of the antarctic ice sheets.

MD wave fades moving deeper into SH due to lack of land mass & land impediment to antarctic circumpolar (southern ocean) flow --(need midlatitude zonal land - sea contrast for meridional deflection of westerlies = differential land - sea equator - pole column - integrated - temperature gradient response to solar forcing, easily measured using a simple wavelet tachometer, which detects externally governed universal constraint)

Not exact matches

As surface temperture is altitude dependent one might have thought the first thing to check would be a map, as the arctic ice lies at sea level + 9 % of its thickness, while the antarctic ice sits several kilometers high in the sky, and the surrounding apron of the stuff is immune to windage because of the circumpolar continent in its midst.