What are the characteristics of the climate in fremantle Port and ushuaia Port, where the replenishment stops?

(1) Kunlun Station is located in the Antarctic circle, and the polar daytime starts from 65438+February 22, and the direct point of the sun moves southward, and the daytime length in Shanghai gradually shortens, reaching the shortest on 65438+February 22; From February 22, 65438 to the end of the polar day, the direct point of the sun moved northward, and the length of the day in Shanghai gradually became longer.

(2) The research ship returned through the waters of Western Australia, passing through west wind drift on the way from the Antarctic continent to the waters of Western Australia, and passing through the Australian cold current on the way to the waters of Western Australia.

(3) From Zhongshan Station to ushuaia Port in South America, passing through the polar east wind and west wind drift. Therefore, the difficulties encountered are strong winds, huge waves and low temperature of icebergs.

(4) fremantle Port is located 40 S south-southwest of Australia, with Mediterranean climate, controlled by subtropical high in summer and less precipitation; Winter is controlled by the westerly belt, and there is much precipitation.

So the answer is: (1) From the extreme day to 65438+February 22, the day length gradually becomes shorter; From February 22, 65438 to the end of the extreme day, the day gradually became longer.

(2) Cold current in west wind drift and Western Australia.

(3) Strong winds and waves, icebergs, low temperature, etc.

(4) Features: less precipitation in summer, more precipitation in winter, controlled by subtropical high in summer, prevailing downflow and less precipitation; Affected by prevailing westerly winds in winter, the weather is rainy.