Yantai weather, long island weather

Recently, in Yantai, Shandong Province, the waters near Long Island were frozen due to extremely cold weather. After the snowstorm, the frozen sea landscape can be seen everywhere on the beaches of Long Island, crystal clear in the sun, just like a fairy tale world. There is a clear line between the ice surface and the unfrozen sea surface, like Yuanyang hot pot. The frozen wonders on the seashore are like a mandarin duck pot, which has aroused the onlookers of netizens.

There is a clear dividing line between the frozen shallow sea and the unfrozen deep sea, which makes this sea area look like a huge? Yuanyang hotpot? . It's a miracle that waves freeze like this. The original dynamic picture suddenly becomes static and looks unique.

Second, the causes of wonders

Due to the strengthening of the cold wave at the beginning of this year, the low temperature in North China, Huanghuai and other places is extreme, and the low temperature in many places is rare in the same period of history. This cooling, the lowest temperature in the process of north-south cooling will not exceed the lowest value in the same period in history. The lowest temperature in western central China may be close to the historical extreme value in the same period.

There is a very clear dividing line between the frozen offshore and the unfrozen deep sea near Yantai Long Island, which makes this sea area look like a huge? Yuanyang hotpot? .

The freezing point of seawater is lower than that of fresh water. Coupled with the surge of seawater, there is vertical convection and mixing between the surface and lower seawater, and the overall temperature drops slowly, making it difficult for seawater to freeze. In the shallow part of the bay, the seawater has poor fluidity and may freeze. For example, the Bohai Sea and the northern Yellow Sea are frozen to varying degrees every winter. After entering the cold weather, Yantai experienced several snowstorms, with snowflakes flying and the north wind rustling. In the Yujie sea area between the south and the north Changshan Island, there is a phenomenon of sea surface freezing, and the thickest part of the ice layer is nearly 20 cm. The waves froze as if time had stood still. Some fishing boats that had no time to evacuate were frozen on the ice, just like a desolate frozen world.

Third, the root cause

This year's cold wave continues to increase, which is the fundamental reason. Cold wave refers to the large-scale invasion of cold air from polar regions or cold zones into middle and low latitudes like tides in winter. In layman's terms, it is very cold, and cold air is coming. The cold wave invading China is mainly the southward cold high pressure from the Arctic, Siberia, Russia and Mongolia. In these areas, there is no sunshine for a long time in winter, and there is snow and ice everywhere. The air mass staying in these areas is getting colder and drier, as if it were lying in a large natural freezer. When this cold air mass accumulates to a certain extent and the air pressure increases to a level much higher than that in the south, it is like a flood stored in a mountain. As soon as possible, it will flood to the south with lower air pressure, forming a cold wave. When a cold wave strikes, it will cause a sudden drop in temperature, accompanied by strong winds, rain and snow.