What is the weather? What is the definition of meteorology?

Generally speaking, it refers to all natural atmospheric phenomena such as wind, clouds, rain, snow, frost, dew, rainbow, halo, lightning and thunder.

Concept discrimination:

1, "Weather"

The general name of various physical phenomena and processes in the atmosphere, such as cold and hot, dry and wet, wind, clouds, rain, snow, frost, fog, lightning and so on.

2. "Weather"

Refers to the comprehensive situation that affects the instantaneous meteorological characteristics of human activities. For example, it can be said: "Today the weather is fine, sunny and sunny, and the sky is clear in Wan Li;" Yesterday the weather was terrible, there was a storm "and so on.

3. "Climate"

It refers to the multi-year characteristics of meteorological conditions of the whole earth or a certain area in a year or a period. For example, Kunming has four seasons like spring; Most areas of the Yangtze River basin are warm in spring and autumn, hot in midsummer and cold in winter, so people call it temperate climate with four distinct seasons. The rainy season in Beijing is from the end of July to the beginning of August every year.

Therefore, the connotations of "meteorology", "weather" and "climate" are obviously different and cannot be confused.

Extended data:

I. Meteorological development

Over the past 30 years of reform and opening up, China's meteorological cause has made great achievements, the level of business services has been continuously improved, the ability to cope with complex weather and climate has been significantly improved, and the comprehensive strength has been significantly enhanced.

In order to promote China's transformation from a meteorological power to a meteorological power, in September 20 15, China Meteorological Bureau officially issued the National Meteorological Modernization Development Outline (20 15-2030), which clearly defined the goal of basically realizing meteorological modernization in 2020 and looked forward to the goal of fully realizing meteorological modernization in 2030, which became the blueprint for the future development of China's meteorological cause.

Second, the industrial impact.

The influence of meteorology on industrial production is very extensive. Whether it is the choice of factory site, the design of spacious rooms, the storage and manufacture of raw materials, the storage and transportation of products, it is affected by meteorological conditions such as temperature, humidity, precipitation, wind power and solar radiation.

Especially disastrous weather, such as tropical storms and typhoons, heavy rains and floods, power transmission lines interrupted or factories and equipment damaged, warehouses flooded, workers killed or injured, unable to go to work, etc. Insufficient water supply caused by drought; Fire caused by lightning; Freezing damage such as water pipes and oil pipelines caused by low temperature; High temperature and low humidity are easy to induce fire and explosion; High temperature and humidity easily lead to corrosion and mildew of raw materials, which affects workers' health and production efficiency, and directly or indirectly affects industrial production.

Through investigation and analysis, it is concluded that there are more industrial accidents in high temperature season than in other seasons; When the temperature and humidity in the workshop of cotton mill suddenly drop, the broken ends of cotton yarn increase. According to the investigation of Cangzhou Gas Bureau, Hebei Province, the production of sea salt is not only affected by precipitation weather. But also affected by temperature.

When cold air attacks, the daily temperature drops above 8℃ and the lowest temperature is below 5℃, which can produce mirabilite and reduce the salt production; When the maximum temperature is above 33℃, the relative humidity is below 30% and the wind speed is above 8m/s, the specific gravity of brine will change rapidly due to the increase of evaporation, which will easily produce magnesium chloride and affect the salt production. In a word, meteorology affects all aspects of industrial production.

Baidu encyclopedia-meteorology