Windsond Swarmsonde

In-situ mapping of evolving T, P, RH and wind fields in 3D


Using two balloons

Swarmsonde is launched with two balloons (and two tethers). The sonde can then cut off one balloon from the sonde at a user-defined altitude. The balloon that still is attached to the sonde has enough helium to keep the sonde at the preferred altitude for a longer time, following the winds in a roughly Lagrangian trajectory.


Operate 17 sondes per radio frequency

The Swarmsonde system can track 17 sondes per radio frequency to enable the user to launch a “swarm” of sondes in close proximity, compared to the standard Windsond system that can track 8 sondes per radio frequency. With the “Multisonde” version, the user can configure an even higher number, to over a hundred sondes.


Temperature, Humidity and Pressure in 3D

Swarmsonde was initially developed for operations in convective storms to map temperature, pressure and humidity in 3D. Read more about this in the below mentioned article:
Markowski, P.M.; Richardson, Y.P.; Richardson, S.J.; Peterson, A. Aboveground thermodynamic observations in convective storms from balloon borne probes acting as pseudo-Lagrangian drifters. Bull. Am. Meteorol. Soc.2018, 99, 711–724


Similar in operation to S1H3-R

Using the same hardware as Windsond S1, the product operates very similar to the regular reusable Windsond S1 radiosonde, except for the above mentioned unique Swarmsonde capacities.


For more information, read the Swarmsonde flyer (210 kB) or send your inquiry to

(c) 2015 Sparv Embedded AB
Sparv Embedded AB
Ågatan 39
58222 Linköping, Sweden
Phone: +46 (0)707 312608