How did the Haihao phenomenon come into being?

How did the Haihao phenomenon come into being?

How did the phenomenon of "Hai Hao" come into being? 10 On February 24th, the "Haihao" landscape appeared in the waters of Donggang and Fujiazhuang. Despite the cold weather, many citizens still go to the seaside in Donggang to enjoy the scenery. How did the phenomenon of "Hai Hao" come into being?

How did the phenomenon of Hai Hao come into being? 1 the word "haihao" originated from a report on the phenomenon of "steaming" in Zhangzidao, Dalian on October 27th, 2065438+05438+065438/kloc-0. At that time, the sea temperature difference reached 16- 17℃, the wind was strong, and the temperature was below zero, which was similar to the meteorological conditions and appearances we recently saw in the coastal waters of Qingdao and Dalian, so this time we also used the word "Haihao" in the previous report.

What conditions does the phenomenon of "Hai Hao" need to meet?

Huang Zhou, chief forecaster of Dalian Meteorological Bureau, explained that the phenomenon of "Hai Hao" probably needs to meet three conditions:

① The air temperature is low.

② seawater temperature >; Air temperature

③ The evaporated water vapor on the sea surface condenses rapidly after encountering cold air.

Some experts also believe that the standard name of "Haihao" should be advection evaporation fog (or steam fog). The necessary condition of this atmospheric phenomenon is that cold air with much lower temperature than seawater flows through the warm sea surface, causing strong evaporation of the sea surface. When water vapor meets cold air, it quickly condenses into tiny water droplets and floats near the sea surface to form fog.

Chinese scholar Wang pointed out in his book Sea Fog that ice fog can appear below -30 degrees, above-10 degrees, and between -30 degrees and-10 degrees, it is a mixed fog of ice water.

Is "Hai Hao" the "sea fog"?

morphological analysis

For people who live by the sea, "sea fog" is more common, especially in spring and early summer. It is a kind of water vapor condensation because warm and humid air meets cold sea surface, and it is a liquid.

"Haihao" refers to a kind of water vapor condensation when cold air meets relatively warm sea surface. It can be liquid or solid or a mixture of solid and liquid.

Definition comparison

Compared with the definition of "sea fog", these two phenomena belong to a kind of water vapor condensation (China) in the upper and lower atmosphere of the ocean, forming a large number of water droplets or ice crystals (or both) accumulation, which reduces the horizontal visibility. Therefore, from this attribute, it can be considered that "Haihao" belongs to a kind of sea fog.

How did the sea-sea phenomenon come into being? 2. There is fog on the sea, islands looming in the distance, seagulls shuttling through the fog, just like a fairyland ... 65438+On February 24th, 2008, the "sea-sea" landscape appeared in the waters of Donggang and Fujiazhuang. Experts say that this phenomenon is related to the sudden drop in temperature.

On the morning of February 24, 65438, the reporter came to the seaside of Donggang Business District and saw that the sea was like a cauldron with boiling water, steaming hot ... The whole sea was foggy, seagulls shuttled in the fog, factories and islands in the distance were looming in the fog, and the whole scene was like a fairyland.

During the visit, the reporter found that despite the cold weather, many citizens still went to Donggang seaside to enjoy the scenery. The reporter learned that many citizens come for "Haihao".

"It's really beautiful!" "What a shock!" "I really want to see the scene!" ..... Some netizens posted live videos and photos online, and the rare beauty immediately attracted a large number of netizens to watch and praise.

The reporter learned that on the same day, in the waters of Fujiazhuang, there was also a "Haihao" landscape. Mr. Sun, a winter swimmer, told reporters that in recent years, there have been many "Haihao" landscapes in the waters around Dalian, "which should be related to the sudden drop in temperature."

The reporter learned that in recent years, there have been many wonders of "Hai Hao" in Fujiazhuang, Cao Shi and other sea areas in our city. Liu Yuling, a senior engineer at Dalian Ocean Forecasting Station, said that the phenomenon of "Hai Hao" needs two conditions: temperature difference and condensation. At present, the water temperature around Dalian is around 10℃, and the temperature is MINUS ten degrees, with a difference of more than 20 degrees Celsius. The temperature of seawater is higher than that of air. Seawater evaporates into water vapor and condenses quickly when it meets cold air, so there is a phenomenon of "sea Hao".

How did the Haihao phenomenon come into being? 3 "Hai-Hao" spectacle is a local name, which is called "evaporation fog" in meteorology. It belongs to a weather phenomenon, which only appears in cold winter and generally appears above the water. There is a phenomenon of "evaporation fog" in Qingdao sea. When some dry and cold air meets relatively warm water, it will cause rapid evaporation of water. The phenomenon that the generated water vapor condenses into fog in dry and cold air is called "evaporation fog", which usually occurs in early winter, when the weather begins to cool rapidly, and this phenomenon will happen on the cold northern water surface.

In June 5438+10 this year, many citizens were there.

Fujiazhuang, Tiger Beach, Stone Trough, Donggang and other sea areas.

Photographed the shocking "Haihao" spectacle.

In general, the formation of "Haihao" phenomenon requires three main conditions: one is strong wind, the other is large temperature difference between the sea surface, and the third is that there is a certain amount of fine particles in the air as condensation nuclei.

Since last night, Dalian has been affected by strong cold air, and there has been strong wind and cooling weather. When the temperature above the sea surface suddenly drops below-10℃, the water vapor evaporated from the sea surface quickly condenses into ice crystals when it meets cold air, showing the phenomenon of "white clouds" and forming a "vast atmosphere".

Wait until the sun comes out

The temperature difference between the atmosphere and seawater decreases.

The phenomenon of "the vast sea" will gradually disappear.