How is the weather forecast predicted?

Weather forecast is a science to determine the future weather through the observation, analysis and prediction of atmospheric system and ocean system.

Prehistoric humans have already begun to predict the weather to arrange their work and life accordingly (such as agricultural production, military operations, etc.). ); Today's weather forecast is mainly based on the collection of a large number of data (temperature, humidity, wind direction and speed, air pressure, etc.). ), and then use the understanding of atmospheric processes (meteorology) to determine future air changes.

Because of the chaos of the atmospheric process and the fact that science has not fully understood the atmospheric process today, there will always be some errors in the weather forecast. The satellite cloud image of China Central Meteorological Observatory was taken from Fengyun-1 and other meteorological satellites. Using satellite cloud images for analysis can improve the accuracy of weather forecast.

Development history

Numerical value is the language of science. Weather forecast is inseparable from the quantitative observation of atmospheric motion by instruments. We can set the invention and application of meteorological instruments as the start time of early weather forecast; /kloc-in the 5th century, the west invented the pressure plate anemometer, which can quantitatively measure the velocity (energy) of atmospheric motion for the first time.

17-18th century, scientists have invented various instruments for quantitative measurement of weather phenomena, which indicates that the detection means of meteorological scientific research has entered a new development period; British physicist Hooke (1635–1703) invented the hygrometer; 1606, Galileo invented the thermometer. 1639, Galileo's disciple Benedetto Castell invented the rain gauge.