How does the meteorological station ensure the correctness of the forecast?

The meteorological observatory is based on satellite cloud images and atmospheric cyclones, and is calculated by big data. Make a correct judgment on the weather and make a forecast.

The weather forecast is analyzed according to the weather phenomena and meteorological element maps at the same time and in different places. Start from the ground and high altitude.

From the analysis of the weather map, we know where the cold air and warm air are, where it is windy and rainy, and where the weather is sunny. By constantly analyzing the weather maps at different times, we can know the moving direction and speed of the weather system, so as to judge what weather system will affect the local area in the future and what weather will appear.

The meteorological station has a complete weather system, and there is a good correspondence between the analysis of pressure system, cloud weather map and cloud cyclone map.

For example, controlled by the cold and high pressure in the mainland, the weather is sunny and cold, and the northerly winds blow more. Controlled by subtropical high, the weather is sunny and hot, with more southerly winds. Or the intersection of cold and warm air is called front, and the weather changes suddenly due to the front, mainly rainy weather. Controlled by low pressure, the weather is rainy. These are the basis of the accuracy of weather forecast.

With the wide application of remote sensing, computing technology and meteorological satellite data, the weather forecast has made a new leap, and the traditional weather map has been replaced by numerical weather forecast. The so-called numerical weather forecast is to describe the laws of atmospheric motion with seven differential agendas of fluid mechanics and thermodynamics, such as maximum temperature, minimum temperature, precipitation, humidity, air pressure, wind direction and wind speed. By solving the equations with a large-scale high-speed computer, we can get the space-time analysis of many unknown quantities in the future, that is, the future weather distribution.

The meteorological service desk is responsible for receiving the forecast information released by the National Center, editing and modifying the latest local meteorological data and the experience of forecasters, and making local weather forecasts.

Through a series of scientific calculation, simulation and technical analysis, the meteorological station obtains more accurate weather maps to ensure the correctness of the forecast.