Meteorological standards for spring, summer, autumn and winter

Meteorological standards for spring, summer, autumn and winter;

Spring: March to May. Spring in the northern hemisphere begins in March 1, and spring in the southern hemisphere begins in 1 October1. Summer: June to August. Summer in the northern hemisphere begins in June 1 and in the southern hemisphere in May 1. Autumn: September to165438+1October. Autumn in the northern hemisphere begins in September 1, and autumn in the southern hemisphere begins in July 1. Winter: 65438+February to February. The northern hemisphere starts from 65438+February 1, and the southern hemisphere starts from September 1.

It should be noted that the seasons in the southern hemisphere are opposite to those in the northern hemisphere due to the difference between the rotation and revolution of the earth. In addition, the division of seasons is not strictly based on dates, but on the comprehensive performance of climate and astronomical phenomena. For example, in China, climatology usually takes March to May as spring, June to August as summer, September to 1 1 as autumn, and 12 to February as winter.

Meteorology is a science that studies atmospheric phenomena, atmospheric processes and their laws. It involves many fields such as earth science, physics and chemistry, and is closely related to human production and life. The research content of meteorology is very extensive, including weather forecast, climate forecast, atmospheric circulation, atmospheric chemistry, atmospheric physics, cloud physics and so on.

The research methods of meteorology mainly include observation, experiment, numerical simulation and theoretical research. Observation is the basis of meteorological research, including the measurement of atmospheric composition, temperature, humidity, wind speed, wind direction and air pressure. Experiment is an important means to verify meteorological theory and forecast model, and meteorological phenomena under different conditions can be studied through experimental devices that simulate atmospheric phenomena.

Numerical simulation is to simulate atmospheric process and climate change through computer model, and it is one of the important means of modern meteorological research. Theoretical research is to deduce the laws of atmospheric movement and the trend of climate change through mathematical and physical principles.

Meteorology is widely used in human production and life. For example, weather forecast can predict the future weather situation and provide guidance for people's life and work. Climate prediction can predict future climate change and provide basis for environmental protection and energy utilization. In addition, meteorology can also provide important services for aviation, navigation and agriculture.

With the development of science and technology, the research of meteorology is also deepening. For example, climate change research is one of the hot spots in current meteorological research, which involves all aspects of the global climate system, including atmosphere, ocean, land and so on. In addition, meteorology also involves air pollution and prevention, meteorological energy utilization and other issues.