How is the wind speed measured in the weather forecast?

How to measure the observer of weather forecast. No matter day or night, whether it is hot in summer or bitter in winter, they should stick to their posts, closely monitor the changes of the situation, record the whereabouts of each weather in detail and write it into meteorological messages. Each message should be compiled with dozens of meteorological elements, and each meteorological element is divided into many categories. Only 100 can be selected. A slight negligence will lead to mistakes. It can be seen that it is not easy to complete the work of observing and sorting out information in a short time. Second, the operator should send the compiled meteorological messages to meteorological, civil aviation and military airports in time, and copy the meteorological information from all over the country. Whether it is "eye-to-eye" sending or "ear-to-ear" copying, the brain needs to respond quickly. Therefore, dedicated expression and agile thinking are necessary conditions for operators. 3. Cartographer. They should translate meteorological information from all over the country into meteorological figures or designated special symbols and fill them in special meteorological maps. This kind of weather map generally has no geographical name, so it should be replaced by area number and station number. Weather charts can be large or small, and Europe (Europe), Asia (Europe) and various symbols are commonly used. Fill in the surrounding of each station number accurately according to the specified location. These places are less than a dime in size. To do this job well, you must be skilled and ingenious. 4 Forecasters. After they get the weather map, they will immediately start to work, analyze and describe the positions and properties of high pressure, low pressure, fronts (cold and warm air interfaces) and various weather areas, find out the changing laws with wisdom and experience in the ever-changing process, and predict the next 24 hours.

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A new method of weather forecast: measuring global wind speed with laser satellite?

A research team of NASA is studying a new method of measuring global wind speed by using laser satellites to accurately predict the weather. This research project costs160,000 dollars, and it will use satellites orbiting the earth to measure wind speed. These satellites will send harmless shock waves into the atmosphere.

Key words: new method of laser satellite weather forecast, anemometer, accurate prediction of atmospheric emission by satellite measurement, research project group?

A research team of NASA is studying a new method of measuring global wind speed by using laser satellites to accurately predict the weather. This research project costs 6.5438+0.6 million yuan. It will measure the wind speed by using satellites orbiting the earth in different orbits. These satellites will emit harmless laser beams into the atmosphere and then collect the laser beams reflected by dust in the atmosphere. By comparing the intensity and angle of incident laser and reflected laser.

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How to define several wind speeds in weather forecast?

Source: Zhihu.

Weather Jia

Wind has both magnitude and direction, so the wind forecast includes wind speed and direction. The magnitude of wind speed is often expressed by several winds. The level of wind is determined according to the degree of influence of wind on ground objects. In the weather forecast, we often hear the expression "the north wind is 4 to 5", in which the wind refers to the average wind; If you hear the phrase "gust 7", gust refers to the wind with high and low speed, and the wind at this time refers to the high-speed wind.

Wind power refers to the strength of the wind blowing on an object. Generally speaking, according to various phenomena caused by wind blowing on objects on the ground or water surface, the wind force is divided into 13, with a minimum of 0 and a maximum of 12 (note that it is not from 1 to 13). According to the national standard "Wind Grade" issued in June of 20 12, and according to the wind speed at the height of 10 meter in the standard meteorological observation field, the wind grade is divided into 18 grade in turn. There are three commonly used units to express wind speed, namely nautical mile/hour, meter/second and kilometer/hour, and the commonly used unit for typhoon forecast in China is meter/second.

In 200 1 year, the China Meteorological Bureau issued the Regulations on Typhoon Operation and Service, which added typhoons above 12 to 17 and adopted Beaufort scale. /typhoon kloc-0/2, set at 32.4-36.9 m/s; Grade 13 is 37.0-41.4m/s; 14 is 4 1.5-46. 1 m/s, 15 is 46.2-50.9 m/s, 16 is 51.0-56. The speed here refers to the wind speed at 10 meters above the ground on the flat ground. If there is a strong wind greater than or equal to 6 1.3m/s, it is called 17 or more, and it is called 18, which is also the common name of super typhoon in the international maritime community.

Wind measuring instruments are generally connected with wind direction anemometers by electricity, and the wind in farmland can be measured with portable anemometers or anemometers. In the absence of an anemometer, visually observe the wind.

In daily life, the subject can estimate the wind level of his environment according to the land and ground images in the picture below (the source and producer of the picture are at the bottom of the picture).

Wind has both magnitude and direction, so the wind forecast includes wind speed and direction. The magnitude of wind speed is often expressed by several winds. The level of wind is determined according to the degree of influence of wind on ground objects. In the weather forecast, we often hear the expression "the north wind is 4 to 5", in which the wind refers to the average wind; If you hear the phrase "gust 7", gust refers to the wind with high and low speed, and the wind at this time refers to the high-speed wind.

Wind power refers to the strength of the wind blowing on an object. Generally speaking, according to various phenomena caused by wind blowing on objects on the ground or water surface, the wind force is divided into 13, with a minimum of 0 and a maximum of 12 (note that it is not from 1 to 13). According to the national standard "Wind Grade" issued in June of 20 12, and according to the wind speed at the height of 10 meter in the standard meteorological observation field, the wind grade is divided into 18 grade in turn. There are three commonly used units to express wind speed, namely nautical mile/hour, meter/second and kilometer/hour, and the commonly used unit for typhoon forecast in China is meter/second.

In 200 1 year, the China Meteorological Bureau issued the Regulations on Typhoon Operation and Service, which added typhoons above 12 to 17 and adopted Beaufort scale. /typhoon kloc-0/2, set at 32.4-36.9 m/s; Grade 13 is 37.0-41.4m/s; 14 is 4 1.5-46. 1 m/s, 15 is 46.2-50.9 m/s, 16 is 51.0-56. The speed here refers to the wind speed at 10 meters above the ground on the flat ground. If there is a strong wind greater than or equal to 6 1.3m/s, it is called 17 or more, and it is called 18, which is also the common name of super typhoon in the international maritime community.

Generally, wind measuring instruments are electrically connected to wind direction anemometers, and the wind in farmland can be measured by portable anemometers or anemometers. In the absence of an anemometer, visually observe the wind.

In daily life, the subject can estimate the wind level of his environment according to the land and ground images in the picture below (the source and producer of the picture are at the bottom of the picture).