Which website can I go to to check the local air pressure value?
The website of National Meteorological Science Data Service Platform is: data.cma.cn.
Data and Internet-based Sources of Meteorological Data Acquisition
Climatic data: usually refers to all kinds of original data observed by conventional meteorological instruments and professional meteorological equipment and the collection of all kinds of data formed after processing, sorting and reorganization. However, with the development of modern climate, the content of climate research is constantly expanding and deepening, and the concept and connotation of climate data are further extended, generally referring to the collection of relevant original data and processed products of the whole climate system.
Weather data: Weather data is a kind of real-time meteorological data used for weather analysis and forecast.
The main differences between weather data and climate data are: weather data is transformed into climate data with the passage of time; The content of climate data is much wider than that of weather data; Climate data is a long time series, while weather data is a short time series.
In order to obtain valuable meteorological data, all countries in the world have established various meteorological observation stations, such as ground stations, sounding stations, wind stations, rocket stations, radiation stations, agricultural gas stations and automatic weather stations. Since the establishment of People's Republic of China (PRC), a comprehensive and widely distributed network of more than 2,000 stations has been established.
The National Meteorological Information Center receives the observation data of major stations at home and abroad every day, which accumulates over time and becomes climate data with the passage of time. Some stations in China send or transmit observation records and digital data to the National Meteorological Information Center every month, and these data or reports become an important part of climate data. In addition, climate data also includes other disciplines collected through various channels, such as water literature and earth science.
The statistical results of many years' observation records of meteorological elements are called climate statistics. They are the basic data for analyzing and describing climate characteristics and their changing laws. The average, total amount, frequency, extreme value, variability, the days of various weather phenomena and their start and end dates, and the duration of some elements are usually used. Climate statistics usually need long records to make the obtained statistical results more stable, generally taking records of more than 30 years.