Strateole Program

Strateole Program

High-altitude balloon program to study the tropopause

Strateole-2 is a French-US project to study climate processes in the Tropical Tropopause Layer (TTL) and in the lower stratosphere. The project originality pertains to  the use of CNES superpressure balloons, capable of drifting for several months between 18 and 20 km altitude. Strateole-2 will release a total of nearly 20 long-duration balloons in two separate campaigns between 2019 and 2024.

Mission Class:


Mission Status:


LASP Roles:

Research, Instruments, Data

Science Target:

Earth's Atmosphere

Mission Focus:

Earth's Atmosphere, Stratosphere, Troposphere

Primary Mission Site:

LASP Mission Site:

Launch Dates:
Campaign 1: November 2020 and April 2021
Campaign 2: November 2023 and April 2024

Lead Institution: Centre National d’Etudes Spatiales (CNES)

Partners: Laboratory for Atmospheric and Space Physics, National Science Foundation, National Oceanic and Atmospheric Administration, Scripps Institution of Oceanography, NorthWest Research Associates, Atmospheric Sciences and Climate Italy, National Atmospheric Research Laboratory India, University of Adelaide Australia