Gwenaël Berthet

The ATMOSFER campaign: synergistic observations for the preparation of the ESA FORUM mission

Mélanie Ghysels, Luca Palchetti, Silvia Viciani, Claudio Belotti et autres

Abstract. The balloon-borne ATMOSFER campaign, supported by CNES, was held in Kiruna in June 2024. This campaign involved lightweight hygrometers (Pico-Light H2O, NOAA GML frost point hygrometer, EN-SCI Cryogenic frost point hygrometer), optical particle counters and ice crystal imager (POPS, LOAC v1.5, …

fr, Maroc, es, us, de, se, gb, it (code pays fourni par la source)

Comment on egusphere-2026-3280

Jean‐Paul Vernier, Nicolas Dumelie, Amit Kumar Pandit, Gwenaël Berthet et autres

Abstract. Stratospheric aerosols play key roles in the radiative and chemical balance of the atmosphere, especially after volcanic and wildfire activities. The sources of stratospheric aerosols have become more complex over the last decade through the influence of Asian pollution, rocket and …

us, fr, br, in, ch (code pays fourni par la source)

Reply on AC1

Jean‐Paul Vernier, Nicolas Dumelie, Amit Kumar Pandit, Gwenaël Berthet et autres

Abstract. Stratospheric aerosols play key roles in the radiative and chemical balance of the atmosphere, especially after volcanic and wildfire activities. The sources of stratospheric aerosols have become more complex over the last decade through the influence of Asian pollution, rocket and …

us, fr, br, in, ch (code pays fourni par la source)

Development of a balloon-borne aerosol collector for the chemical analysis of stratospheric aerosols

Maylis Gaulin, Éric d'Almeida, Gwenaël Berthet, Erwan Martin et autres

International audience

review on egusphere-2026-3280

Jean‐Paul Vernier, Nicolas Dumelie, Amit Kumar Pandit, Gwenaël Berthet et autres

Abstract. Stratospheric aerosols play key roles in the radiative and chemical balance of the atmosphere, especially after volcanic and wildfire activities. The sources of stratospheric aerosols have become more complex over the last decade through the influence of Asian pollution, rocket and …

us, fr, br, in, ch (code pays fourni par la source)

New Formation of a Smoke Charged Vortex from the 2025 Canadian Wildfires

Loïc Vieille, Clair Duchamp, Gwenaël Berthet, Bernard Legras et autres

fr, Maroc, be, lb, ca (code pays fourni par la source)

Cross-hemispheric transport of the Hunga aerosol plume: in situ evidence and radiative effects from the northern hemisphere

Corinna Kloss, Gwenaël Berthet, Pasquale Sellitto, Irene Bartolomé García et autres

Abstract. The Hunga Tonga–Hunga Ha’apai eruption (20° S) in January 2022 injected a substantial amount of water vapor and aerosols into the stratosphere, primarily impacting the Southern Hemisphere and tropics. Using a combination of satellite observations and in situ measurements with optical …

de, fr, it, us, ch, gb (code pays fourni par la source)

A new Profiling Optical Particle Counter to study stratospheric aerosols

Jean‐Paul Vernier, Nicolas Dumelie, Amit Kumar Pandit, Gwenaël Berthet et autres

Abstract. Stratospheric aerosols play key roles in the radiative and chemical balance of the atmosphere, especially after volcanic and wildfire activities. The sources of stratospheric aerosols have become more complex over the last decade through the influence of Asian pollution, rocket and …

us, fr, br, in, ch (code pays fourni par la source)

Supplementary material to "A new Profiling Optical Particle Counter to study stratospheric aerosols"

Jean‐Paul Vernier, Nicolas Dumelie, Amit Kumar Pandit, Gwenaël Berthet et autres

us, fr (code pays fourni par la source)

LOAC2: The Improved Version of the Light Optical Aerosols Counter for Measurements at Ground Level and Within the Atmosphere Under Balloons

Jean‐Baptiste Renard, Gwenaël Berthet, Matthieu Jeannot, Patrick Jacquet et autres

The new LOAC2 optical aerosol counter is designed to detect liquid and solid particulates across 19 to 30 size classes within the 0.15-90 µm size range, and to provide their main typology. The instrument can be used at ground level and on …

fr (code pays fourni par la source)

Comment on egusphere-2025-6226

Hazel Vernier, Demilson Quintao, Bruno Biazon, Eduardo Landulfo et autres

Abstract. The explosive eruption of Hunga Tonga-Hunga Ha'apai (HTHH) in January 2022 marked a historic event as one of the largest volcanic explosions in the past 140 years. Unlike typical volcanic eruptions, which primarily inject sulfur dioxide (SO₂), HTHH introduced a massive …

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Global Transport and Composition of Volcanic and PyroCb Stratospheric Aerosols Observed by EarthCARE/ATLID and ground-based lidars

Sergey Khaykin, Oceane Soares, Nicolas Kadygrov, M. Sicard et autres

ESA’s EarthCARE satellite mission launched in May 2024 and carrying Atmospheric LIDar (ATLID) provides high-resolution vertical profiling of aerosols and clouds at 355 nm. Fully operational since August 2024, ATLID has been witness to a significant perturbation of stratospheric aerosol budget following …

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