Large-scale blizzard in Shandong

The unique environment surrounded by the sea on three sides makes Shandong have a large-scale blizzard every year, and it has been given the title of "Snow Nest".

Shandong province is known as the "snow nest", and the frequent snowfall is cold current snowfall, which is called "ocean effect snowfall" internationally. This kind of snow often occurs in some areas such as the coastal areas in the middle and high latitudes! Shandong Peninsula is located in the east of Shandong Province, surrounded by the sea on three sides, facing the Bohai Sea in the north, facing Liaodong Peninsula across the sea, and facing the Yellow Sea in the south and east. The central part of Shandong Peninsula is an east-west hilly area. 1 1 The low mountain is more than 500 meters above sea level, and the highest peak is Kunyu Mountain, with an altitude of 922.8 meters.

In winter, the seawater temperature in Bohai Sea is higher than the air temperature, and the ocean is like a huge water vapor and heat reservoir. When the strong cold air from the north passes through the warm sea surface of the Bohai Sea, there will be obvious temperature difference between the air and the sea. The warm and humid air on the water surface will evaporate upward, meet the cold air above, condense into ice crystals, form clouds, and thus produce snowfall.

Bohai effect snowfall generally forms in the middle of Bohai Sea and spreads downstream under the guidance of northwest wind. When it moved to the northern coast of Shandong Peninsula, the snowfall intensified due to the influence of terrain uplift, which is also an important reason why the northern coastal area of Shandong Peninsula became a strong Bohai effect snowfall. Strong cold air and warm sea surface are the necessary factors for the occurrence of ocean effect snowfall. The special geographical location makes the ocean effect of Shandong Peninsula frequent in snowfall, making it a famous "snow nest".

Areas with large-scale snowstorms in China

In China, except Shandong Peninsula, Liaodong Peninsula, the eastern coast of Jiangsu, Shanghai and other places can also produce marine effect snowfall, but the frequency and quantity of snowfall are far less than Shandong Peninsula. There are also ocean-effect snowfalls in many parts of the world, such as Canada on the west coast of the Atlantic Ocean and Quebec in the United States, England Island in the east of the Atlantic Ocean and the west coast of Japan in the east of the Sea of Japan.

"Snow Nest" Yantai and Weihai often have sea effect snowfall, but under certain weather conditions, Jinan, Zibo and other inland areas will also appear. For example, on February 24, 20021,12, there was "sun snow" in Jinan, with sunny days and snowy days. In this regard, Yang, director of the Shandong Meteorological Observatory, said that this was a cold snowfall, which was related to strong cold air and the Bohai Sea.

The strong northeast wind at the lower level transports the water vapor from the warm sea surface of Bohai Sea to inland areas, while the dry and cold air under the strong northwest wind at the middle and upper levels forms atmospheric unstable stratification and produces snowfall. This kind of snow is characterized by massive clouds. When the clouds come, it snows, and it is a big snowflake. Clouds turn clear after passing, and it goes round and round, so it is also called "sun snow".