How do we forecast the weather?

How do we make the weather forecast we learned on radio and TV?

How is the weather forecast made? Not everyone knows about it and thinks it's mysterious. In fact, the weather forecast is not mysterious. Just look at the weather station and you will suddenly realize! With the help of satellites, it is more accurate!

For example, making weather forecast, like factory production, has a certain operation process. Meteorological observation is the first process. To forecast the weather, we must find out his temper and master its coming and going. A weather observer is like a scout. He used various meteorological instruments to measure air pressure (air pressure), heat and cold (temperature) and flow direction (wind direction and wind force). At the same time, we should also observe what is in the sky with the naked eye, and observe the clouds, weather phenomena and visibility with good names in advance; In addition to observing the situation on the ground, it is also necessary to take the instrument to high altitude with a sounding balloon to measure the meteorological conditions such as wind, air pressure, temperature and humidity at high altitude and send them back to the ground. Meteorological stations all over the world observe at the same standard time according to the unified caliber standard. Then, the observed data are edited into telegrams according to the prescribed format and sent to the designated meteorological communication center through the telecommunications department.

Sending information in time is the second process. After receiving the telegram, the meteorological communication center will broadcast it according to certain procedures, and the meteorological station will copy it.

Mapping analysis is the third process. After receiving the telegram, the meteorological station translates it into different digital symbols, and the sky is on a blank special map-this is the main tool of weather forecast-weather map!

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The weather condition of the sky returning to the ground is called the ground map; Nature at high altitude is called high altitude map. Forecasters connect the same points of air pressure and call them "isobars". Different isobars divide the graph into high pressure area and low pressure area. Under normal circumstances, generally speaking, the high-pressure area is mostly sunny, and the low-pressure area is mostly rainy. It is also necessary to analyze where is sunny and where is rainy; Controlled by what temperature? ...

After such analysis, the chaotic situation gradually became clear and orderly. The combination of these different situations is the "weather system".

The fourth process is the official weather forecast. Forecasters connect the analyzed weather maps at different times, analyze the weather evolution, find out the ins and outs of the weather, and then make a forecast.

Take chestnuts for example. On the weather map, if a typhoon is found on the sea 800 kilometers away from Hainan Island, and the central wind force is 10, and it moves in this direction at the speed of 10 km per hour, the weather forecast that "the typhoon will hit the island from the early morning of the next day to the morning" can basically be made.

Finally, it is weather consultation. After making a forecast, the personnel on duty should hold a collective meeting through collective consultation, and talk about their own opinions and reasons first; Other participants are expressing their opinions; Form a unified "forecast opinion" under the collective wisdom. Good forecasts should also be submitted to radio, television, government, army and agriculture. After the market economy, it also opened up "paid precision service".

Now with the development of space technology, the weather forecast is more accurate, accurate to the hour! And can be updated in time, can be updated in ten minutes! I hope I can help you and pay attention to me. Thank you for browsing.