Strateole 2

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 50 long-duration balloons in three separate campaigns between 2019 and 2024. Balloons are released from Mahé international airport, Seychelles, with the local support of Seychelles Meteorological Authority.

First radiosounding. Credits: CNES (E. Renaudie)

A triumphant arrival. Credits: CNES (Ph. Cocquerez)

View from our launchpad. Credits: C. Teissèdre, LMD.

Last work on the Zephyr gondola. Credits: C. Teissèdre (LMD)

Zephyr on its way to the launchpad. Credits: C. Teissèdre (LMD).

Moving a Zephyr gondola. Credits: C. Teissèdre (LMD)

Sumit discussion in the integration tent. Credits: C. Teissèdre (LMD).

A Zephyr gondola ready to fly. Credits: C. Teissèdre (LMD)

Solar panel check. Credits: C. Teissèdre (LMD)

The campaign ground control. Credits: CNRS.

Mounting Zephyr's solar panels. Credits: CNRS, C. Teissèdre.

Tent installation on the launch pad. Crédits: CNRS, C. Teissèdre

Shower in Seychelles. Crédits: CNRS, J. Lenseigne

Strateole-2 working place. Crédits: CNES, Ph. Cocquerez

Solar panel structure. Crédits: CNRS, C. Teissèdre

Assembling the solar panel structure. Crédits: CNRS, C. Teissèdre

At work in the tent. Credits: CNRS, J. Lenseigne

First Strateole-2 team on site. Credits: CNES, Philippe Cocquerez

Strateole_2Follow

A long-duration balloon project at the tropical tropopause to advance our understanding of climate processes

Strateole_2 @strateole_2·

25 Feb

Believe it or not: #Strateole2 "grey" balloon celebrated today Jules Verne's novel by completing a stratospheric round-the-world journey in exactly 80 days!
@IPSL_outreach @esa_aeolus @Scripps_Ocean @gps_hammer @CNES @meteofrance @Strateole2USA @LASPatCU @NSF @latmos_ipsl

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ECMWF@ECMWF·

6 Feb

We started monitoring data from the #Strateole2 balloons. Upper balloons designed to study the equatorial upper troposphere&lower stratosphere providing wind and temperature. Thanks: @NSF @INSU_CNRS @Scripps_Ocean @salcandido @CNES @strateole_2
Details: https://webstr2.lmd.polytechnique.fr/#/

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Stratéole 2 USA @Strateole2USA·

17 Jan

50 RACHuTS profiles and counting! These are first of its kind profiles of temperature #TSEN, aerosol #ROPC, and water vapor #FLASHB 2 km through the #TTL. Lots of great data ratcheting in. Even early evidence of sub-visible cirrus clouds.

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Strateole_2 @strateole_2·

14 Jan

After 56 d + 19 hr of flight, a #Strateole2 balloon just performed the first circumnavigation around the Earth. @CNES long-duration balloons are truly unique to explore the lower stratosphere worldwide!
@INSU_CNRS @IPSL_outreach @Strateole2USA @meteofrance @latmos_ipsl @LASPatCU

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Strateole_2 @strateole_2·

7 Dec

The 8th and last #Strateole2 long-duration balloon has been launched tonight from Seychelles. Thanks to all @CNES and science teams for this great campaign! Lots of achievements and lessons learned for next time.
@IPSL_outreach @latmos_ipsl @meteofrance @LASPatCU @Scripps_Ocean

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Strateole_2 @strateole_2·

6 Dec

And a second balloon the same night, with this time the @Scripps_Ocean ROC as well as @latmos_ipsl Boldair and Becool instruments. Thanks to @CNES team for this great #Strateole2 night!
@IPSL_outreach @NSF @meteofrance @INSU_CNRS @Strateole2USA

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Strateole_2 @strateole_2·

5 Dec

After 1 week of disruption due to the presence of tropical storm Belna in the vicinity of Seychelles, #Strateole2 launches have resumed. TTL2 balloon carrying @LASPatCU Floats and @INSU_CNRS pico-SDLA instruments is in the air!
@CNES @latmos_ipsl @IPSL_outreach @NSF @meteofrance

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Strateole_2 @strateole_2·

27 Nov

Thanks to the @CNES team for the very smooth launch of the 4th #Strateole2 balloon. @INSU_CNRS instruments measuring ozone/aerosols/water vapor will be switched on in the coming hours.
@IPSL_outreach @latmos_ipsl @meteofrance @NSF @LASPatCU @Strateole2USA @NOAA_ESRL

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Strateole_2 @strateole_2·

27 Nov

4th #Strateole2 flight operations ongoing at Mahé, Seychelles. The balloon will fly close to the tropical tropopause to study troposphere/stratosphere coupling.
@IPSL_outreach @meteofrance @Strateole2USA @NSF

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