The Strateole_2 campaign uses CNES superpressure balloons drifting around the globe to study the climate processes in the Tropical Tropopause Layer and the lower stratosphere, helping #Aeolus validation activities along the way🎈🛰️. Read more👉 earth.esa.int/eogateway/news…

#Strateole2 is back to Mahé international airport, Seychelles after two tough years of preparation in France and in the US. Thanks to Seychelles Meteorological Authority for their support. Weather is good. Expecting launches soon. IPSL 🌍 CNES @INSU_CNRS Stratéole 2 USA

Opening flight of the second #Strateole2 campaign! This balloon carries instruments that measure water vapor, aerosols, as well as temperature profiles down to 1.6 km below the flight altitude. Smooth launch in the Seychelles night. CNES IPSL 🌍 @INSU_CNRS LASP

And this is the second balloon of the #Strateole2 opening night, with this time the LATMOS nadir-pointing lidar to observe cloud tops, and the Scripps Institution of Oceanography Jennifer Haase GPS radio-occultation instrument to measure temperature profiles below the balloon. What a night!

Ups and downs last week: 4 launches in two consecutive days, yet one early flight termination. CNES team promptly identified a specific issue with the balloon. Launches will soon resume. 👉 webstr2.ipsl.polytechnique.fr to follow #Strateole2 balloon tracks! IPSL 🌍 @INSU_CNRS

The 5th #Strateole2 balloon is in the air tonight with LASP instruments: an aerosol counter and an aerosol/water vapor/temperature profiler. Lots of upcoming data to better understand water vapor transport through the tropopause. IPSL 🌍 @INSU_CNRS Stratéole 2 USA

The #Strateole2 campaign continues with the smooth launch (zero wind!) of its 6th long-duration balloon. This one carries the same instruments than the 1st (unfortunate) flight. We hope the best for flight #6. So far so good...! @INSU_CNRS IPSL 🌍 CNES

Yesterday night, we flew the 7th #Strateole2 balloon from Seychelles. @INSU_CNRS instruments onboard will measure greenhouse gases all across the tropics. The same day, Flight #2 had sadly to be terminated because of the loss of one com link in the gondola. CNES IPSL 🌍

Ongoing #Strateole2 balloon inflation!

+2 balloon flights tonight. 11 launched so far. And more to come! #Strateole2 continues. IPSL 🌍 Stratéole 2 USA @INSU_CNRS CNES LASP

Green light for the 13th #Strateole2 flight tonight. Stars above us, convection approaching from the east. IPSL 🌍 LATMOS Scripps Institution of Oceanography Météo-France

And this is the launch of the second #Strateole2 balloon in this beautiful Seychelles night. Both balloons will fly near 20 km of altitude for months (hopefully), surfing stratospheric waves around the Earth. IPSL 🌍 CNES @INSU_CNRS

Two more #Strateole2 balloon launches yesterday night! IPSL 🌍 CNES LASP Stratéole 2 USA

#Décryptage Un tour du monde pour observer le #climat 🌏? Les derniers ballons de la seconde campagne Stratéole-2 se sont envolés cette semaine. 🎈 On vous explique tout ici ⤵️ insu.cnrs.fr/fr/cnrsinfo/st… #lmd_ipsl

#Strateole2 balloon records of #HungaTongaHungaHaapai eruption on Jan. 15th. Impressive infrasound signals in the stratosphere! CNES @INSU_CNRS IPSL 🌍 ISAE-SUPAERO ESA's Aeolus mission

Round-the-Earth #HungaTongaHungaHaapai infrasounds have been recorded by #Strateole2 balloons in the stratosphere several times on days following the eruption! CNES @INSU_CNRS IPSL 🌍 ISAE-SUPAERO ESA's Aeolus mission

☁️Atmosphéricienne, Milena Corcos utilise les données de la campagne Strateole_2 pour comprendre l’impact de processus dynamiques (plus précisément des ondes de gravité) sur le cycle de vie des cirrus. Son portrait est à lire ⤵️ tinyurl.com/muh4y9jw

New preprint on Essoar: "Balloon-borne observations of acoustic-gravity waves from the 2022 Hunga Tonga eruption in the stratosphere" where we analyze volcanic infrasound recorded at 20 km altitude, thousands of kms away from the volcano essoar.org/doi/10.1002/es…

3 novel #Strateole2 instruments are performing their maiden flight on this CNES / CSA🎈 : BIS, X-Storm and VATA. ISAE-SUPAERO IPSL 🌍 @INSU_CNRS

Atmosfer is the third and last flight of the CNES balloon campaign. With 12 experiments on board, the balloon will fly during more than 11 hours in a small circle of 100 km around the @SSC_Rockets Esrange base.