1. Why is the weather in the Arctic changeable? 2. Why is the coldest place not in Antarctica but in Dongfang Station? 3. Why is the North Pole?

The Antarctic is the coldest place in the world, and the temperature is lower than that of the Arctic, because the Antarctic is dominated by continents and the Arctic is dominated by oceans. The specific heat capacity of the mainland is small, and the speed and amplitude of cooling are greater than that of the North Pole. In addition, the ocean current (west wind drift) around the Antarctic continent and the polar easterly wind also block and weaken the heat exchange between the Antarctic and the middle and low latitudes, and the average altitude of the Antarctic continent is much higher than that of the Arctic. Most of the Antarctic continent is covered with ice and snow, and the reflectivity of ice and snow to solar radiation is quite high.