in situ measurements of meteorology, ozone and water vapour on constant level super-pressure balloons at and immediately above the tropopause (80 and 60 hPa). HIBISCUS will benefit from the heritage of the developments performed within the frame of the STRATEOLE/VORCORE experiment supported by CNRS, CNES and the US National Science Foundation (NSF);

remote sensing in the upper troposphere and the lower stratosphere of temperature, aerosol and of chemical composition from Infra-Red Montgolfier flying at 24-27 km. This vehicle has been developed by CNES from a concept defined in 1977 at CNRS Service d'aéronomie. More information on this fully operational vehicle can be found on the CNES WEB site.