The origin of foggy symbols

Meteorological symbols are special symbols representing various weather phenomena, clouds and sky conditions. Includes weather phenomenon symbols for observation and recording and weather graphic symbols for media communication.

Under normal circumstances, most netizens can understand the weather forecast. Meteorological symbols of common weather can also vividly represent the weather conditions of the day, such as sunny days are "the sun", cloudy days are "clouds", and the number of raindrops and snowflakes under the clouds represent rainfall and snowfall respectively ... But some meteorological symbols of rare weather do rarely appear in the weather forecast, so there is an opening scene.

You can't help but recognize the symbol of foggy weather in autumn and winter.

This sign is smog, and color is used to distinguish the severity of smog. Yellow, orange and red represent light, heavy and extremely heavy pollution respectively, which means that165438+1October 30th is a light smog.

Different from the common signs of sunny and rainy clouds, the meteorological symbols of fog and haze are somewhat "difficult to understand": the fog with water content as high as 90% has three horizontal bars, and the haze with water content below 80% is marked as "8", which looks a bit like an infinite symbol in mathematics. The water content is between 80% and 90%, which is a mixture of fog and haze, but generally speaking, the main component is haze.

Can fog and haze be confused? Teach you to tell with the naked eye

Many netizens can't tell the difference between fog and haze. In fact, as far as visibility is concerned, it is fog when visibility drops below 1 km, and light fog or haze when visibility falls between 1km ~ 10km. Haze is similar to light fog, with visibility less than 10 km, and is mainly composed of a large number of tiny dust particles, smoke particles or salt particles suspended in the atmosphere.

In addition, there are some visible "differences" between haze and fog. Under normal circumstances, the thickness of fog is only tens of meters to 200 meters, and the thickness of haze may reach 1 km to 3 km. The color of fog is milky white, bluish white or pure white, while haze is yellow and orange gray. Bright objects in the distance are often yellow or red in the mist. In addition, the boundary of fog is very clear, and the "fog zone" that often passes through is a clear Wan Li, but the boundary between haze and its surrounding environment is not obvious.

Don't make a fuss when you see these symbols

In addition to smog, there are actually many meteorological symbols that do not appear frequently. For example, the cross under the cloud indicates fog, one indicates small fog, two indicates medium fog and three indicates heavy fog.

"S" means ups and downs, the upward arrow on "S" means sandstorm, and the right arrow means sandstorm.

Please refer to the above table for details. The next time some strange symbols appear on the mobile phone, it's not that the mobile phone is broken.