始新世南极气候的研究取得重要进展
Fig. 1 Schematic view of the seasonal air pressure reversal over Antarctica during the
Eocene. Arrows represent the movement of air masses. In summer (left), long insulation
and low albedo result in an overheating of the continent compared to the ocean.
The low continental pressure induces winds bringing humidity from the ocean. In winter
(right), the absence of light induces a rapid cooling of the continent compared to
the ocean. The high pressure over the continent is responsible of winds towards the
ocean preventing humidity to come on the continent.