säähavaintopallot

Säähavaintopallot, also known as radiosondit or sääpallo, are unmanned balloons used to measure atmospheric conditions. These balloons are released from ground stations and carry instruments called radiosondes. The radiosonde measures various atmospheric parameters such as temperature, humidity, air pressure, and wind speed.

As the balloon ascends, it transmits the collected data to the ground station via radio signals. The data is then used by meteorologists to forecast weather patterns, understand atmospheric phenomena, and conduct climate research. The balloons are typically made of latex and are filled with helium or hydrogen. They can reach altitudes of up to 30 kilometers (about 100,000 feet).

The flight path and altitude of the balloon are also tracked, providing valuable information about wind direction and speed at different atmospheric levels. Once the balloon reaches its maximum altitude, it eventually bursts due to the low atmospheric pressure. The radiosonde then falls back to Earth, often with a parachute attached to slow its descent and minimize damage.

Säähavaintopallot are a crucial component of global weather observation networks. They provide essential data for numerical weather prediction models, which are used to create daily weather forecasts. The data collected also contributes to long-term climate studies and helps scientists monitor changes in the Earth's atmosphere. Their regular launch, often twice a day from numerous locations worldwide, ensures a continuous stream of up-to-date atmospheric information.