Providing high-quality atmospheric sounding data for the most accurate weather forecasting.
When weather predictions are accurate, more people and their communities are protected from danger and socioeconomic impacts. Upper air soundings help provide a complete atmospheric weather profile, which enables weather organizations to make accurate forecasts.
Vaisala RS41 Upper Air Radiosondes provide world-class data to meteorological institutes and organizations, and are known for their accuracy, reliability, and ruggedness.
Vaisala’s radiosondes provide upper air weather measurement data including temperature, humidity, pressure, and wind speed and direction, and perform even in the most demanding weather conditions — all in a robust and easy-to-use design.
Streamline launch preparations, reduce human errors, and lower operational costs of upper-air weather observations with Vaisala’s Radiosondes.
Vaisala Radiosonde RS41 E-models combine high-quality atmospheric sounding data with innovative, biodegradable materials to help reduce plastic waste originating from sounding operations.
RS41 E-models are an industry first in biodegradable materials: All models include BioCover™, our patent-pending plastic-free and biodegradable radiosonde cover and insulation, and BioTwine™, our plastic-free and biodegradable unwinder twine. These new materials represent an overall reduction of 66% in plastics in the product.
Tailored to the needs of meteorological organizations, RS41 E-models can replace standard RS41 radiosondes in operational use, with the same uncompromising performance and accuracy.
Our line of radiosondes offers different measurement parameters, sensor technology, and transmission methods to suit your particular application.
Discover trusted atmospheric sounding data with reduced waste.
Get all the details on this innovative radiosonde which is excellent for synoptic soundings.
Explore this innovative radiosonde which is excellent for sensor based pressure needs.
The following white paper presents the comparison data of Vaisala BioTwineTM against PP-string unwinders.
This technical paper presents the test results for BioCover materials in different environments and measurement accuracy.
Learn about the Vaisala family of upper air sounding devices, well known for their accuracy, reliability, and ease of use.
Explore the capabilities of this radiosonde’s independent and passive windfinding, unwinder for consistent sensor boom positioning, and more.
Look into this model’s superior PTU measurement performance, stable narrow band transmission compliance, and more.
Get the details you need regarding this model’s add-on sensor connector, GPS, informative LEDs, and more.
See for yourself the RS41’s enhanced performance.
Instructions for RS41 rigging to the balloon, hanger board and Totex parachute.
Here’s what to do with it.
Understand the effect on measurement outcome compared to the total uncertainty in sounding.
Learn how winter weather is predicted and why you should take it easy on meteorologists.
Discover why automatic sounding stations are an important tool in making meteorological data available from difficult locations.
Click here to explore additional product resources for RS41.
We’ve got you covered with upper air radiosondes that provide the most accurate, dependable, and high-quality data available.
Protect people and communities from the impacts of day-to-day and extreme weather with the industry's most accurate and reliable weather observation solutions.
How the Irish meteorological service modernized Europe’s most westerly sounding station.
SUCCESS STORY: You’ll have to go back to the 1930’s to learn about our interesting origins and this indispensable-to-this-day tool.
SUCCESS STORY: From harsh environments that include outer space, Vaisala’s products are found collecting and analyzing valuable data. Check out this autosonde installed in Antarctica.