What's the weather forecast in Korea?

By collecting data: The most traditional data are data such as air pressure, temperature, wind speed, wind direction and humidity collected by professionals, enthusiasts, automatic weather stations or buoys on the ground or at sea. The World Meteorological Organization coordinates the timing of these data collections and sets standards. These measurements are made every hour (METAR) or every six hours (SYNOP).

Data from meteorological satellites are becoming more and more important. Meteorological satellites can collect data from all over the world. Their visible photos can help meteorologists study the development of clouds. Their infrared data can be used to collect the temperature of the ground and cloud top. By monitoring the development of clouds, we can collect the wind speed and direction at the edge of clouds.

However, because the accuracy and resolution of meteorological satellites are not good enough, ground data is still very important. Data Assimilation In the process of data assimilation, the collected data are combined with the numerical model used for forecasting to produce meteorological analysis. The best estimate of its atmospheric state is the three-dimensional representation of temperature, humidity, air pressure, wind speed and wind direction.