How's the weather?

Sunny, cloudy, cloudy, shower, thunderstorm, thunderstorm accompanied by hail, sleet, light rain, moderate rain, heavy rain, rainstorm, heavy rain, heavy rain, snow shower, light snow, heavy snow, blizzard, fog, freezing rain, sandstorm, small to moderate rain, moderate to heavy rain, heavy rain to heavy rain, small to heavy rain, small to heavy rain.

Extended data

Weather refers to the specific state of the atmosphere near the surface in a short period of time. Weather phenomenon refers to various natural phenomena in the atmosphere, that is, the comprehensive expression of the spatial distribution of various meteorological elements in the atmosphere (such as temperature, pressure, humidity, wind, clouds, fog, rain, flash, snow, frost, thunder, hail, haze, etc.). ) in an instant.

The weather process is the change process of weather phenomena with time in a certain area. All kinds of weather systems have certain time and space scales, and they are intertwined and influence each other. The combination of many weather systems constitutes a large-scale weather situation and hemispheric and even global atmospheric circulation. The weather system is always in the process of rebirth, development and extinction, and there are corresponding weather phenomena in different development stages.

Weather forecast is to predict the weather conditions in a certain period in the future by applying the law of atmospheric change and according to the current and recent weather situation. It is based on the analysis of satellite cloud images and weather maps, combined with the comprehensive study of meteorological data, terrain and seasonal characteristics, and mass experience.

For example, the satellite cloud image of China Central Meteorological Observatory was taken by Fengyun-1 meteorological satellite made in China. Using satellite cloud images for analysis can improve the accuracy of weather forecast. The time limit of weather forecast is usually divided into three types: short-term weather forecast (2 ~ 3 days), medium-term weather forecast (4 ~ 9 days) and long-term weather forecast (10 ~ 15 days or more). CCTV mainly broadcasts short-term weather forecast every day.

The main contents of weather forecast are the future rain, maximum and minimum temperature, wind direction and wind force and special disastrous weather in a region or city. As far as China is concerned, meteorological stations can accurately predict the location and intensity of natural disasters such as cold waves, typhoons and rainstorms, and can directly serve industrial and agricultural production and people's lives.

Weather forecast is based on meteorological observation data, applying the principles and methods of meteorology, dynamic meteorology and statistics to make a qualitative or quantitative forecast of the weather conditions in a certain area or a certain place in the future. This is an important goal of atmospheric science research. It is of great significance to people's lives.

Nowadays, when people go out, they can decide whether to bring rain gear by listening to or watching the weather forecast. In the past, they had to worry about the weather. Then, how does the weather forecast, the most important work of the meteorological station every day, come into being?

References:

Weather-Baidu Encyclopedia