Säätutki

Säätutki, the Finnish term for weather radar, is a crucial tool used for meteorological observation. It detects precipitation, such as rain, snow, and hail, and estimates its intensity and movement. Weather radar systems emit radio waves that are reflected by water droplets or ice crystals in the atmosphere. The returning signals, or echoes, are then analyzed to create a visual representation of current weather conditions.

There are several types of weather radar, including conventional Doppler radar, which measures the velocity of precipitation, and polarimetric radar, which can distinguish between different types of precipitation based on the shape and orientation of the particles. The data collected by säätutki is vital for forecasting weather, issuing severe weather warnings, and understanding atmospheric phenomena. Finnish Meteorological Institute (FMI) operates a network of weather radars across Finland to provide real-time weather information to the public and aviation. These radars play a significant role in public safety and the management of weather-related risks.