# Measurement Campaign RACLET -Exploring the Composition and Reactivity of Organic Matter in Cloud Conditions

Junteng Wu, Angelica Bianco, Agnès Borbon, Laurent Deguillaume, Evelyn Freney, Pierre Amato, Jean-Luc Baray, Aurélie Colomb, Marie Monier, Clémence Rose, et al.

► To cite this version:

Junteng Wu, Angelica Bianco, Agnès Borbon, Laurent Deguillaume, Evelyn Freney, et al. Measurement Campaign RACLET -Exploring the Composition and Reactivity of Organic Matter in Cloud Conditions. 8th Sino-French Joint Workshop on Atmospheric Environment, Nov 2024, Bordeaux (Gironde), France. hal-04793580

HAL Id: hal-04793580

https://uca.hal.science/hal-04793580v1

Submitted on 20 Nov 2024

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# Measurement Campaign RACLET – Exploring the Composition and Reactivity of Organic Matter in Cloud Conditions

J. Wu<fnref n="1" />, A. Bianco<fnref n="1" />, A. Borbon<fnref n="1" />, L. Deguillaume<fnref n="1" />,<fnref n="2" />, E. Freney<fnref n="1" />, P. Amato<fnref n="3" />, J-L. Baray<fnref n="1" />,<fnref n="2" />, A. Colomb<fnref n="1" />, M. Monier<fnref n="1" />, C. Rose<fnref n="1" />, E. Brugere<fnref n="1" />, L. Bouvier<fnref n="2" />, R. Dupuy<fnref n="1" />, P. Fréville<fnref n="2" />, J-M. Pichon<fnref n="2" />, M. Ribeiro<fnref n="1" />, P. Cacault<fnref n="2" />, A. Canzi<fnref n="1" />, L. Dupont<fnref n="1" />, F. Mathonat<fnref n="3" />, P. Nibert<fnref n="1" />, F. Peyrin<fnref n="2" />, R. Prud'homme<fnref n="1" />, Y. Wu<fnref n="1" />,<fnref n="3" /> and all other members

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Corresponding author: junteng.wu@uca.fr

## Objectives of the project

**RACLET: Reactive gases, Aerosols and Clouds: Exploring organic matter Transformations**

From 1st April to 30th April 2024

* follow atmospheric organic matter in all its forms and to analyze its environmental variability over the duration of the measurement campaign

* better understand how organic matter is distributed between the different phases during a cloud event (gas, aerosol, aqueous phase) and how these compounds are modified in this multiphasic environment

## Implementations

**The Cézeaux-Opme Puy De Dôme instrumented site**

**Aerosols**
Granulometries
Chemistry
Radiative
In-situ, remote sensing

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**Clouds**
Microphysics
Chemistry
Microbiology

**Gases**
Reactive gas
Greenhouse gas

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**Meteorology**
Precipitations
Dynamic
Radiation

**Wind tunnel**
Natural condition test
center
PDD train set

**Radioactivity**
Aerosols/gases
Clouds/rains

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## Open Trans National Access via ATMO ACCESS

https://www.atmo-access.eu/current-access-opportunities/

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LSCE

LABORATOIRE DES SCIENCES DU CLIMAT & DE L'ENVIRONNEMENT

TROPOS

Leibniz Institute for
Tropospheric Research

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DROPLET
MEASUREMENT TECHNOLOGIES

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## References

[1] Baray, J.-L. et al. Cézeaux-Aulnat-Opme-Puy De Dôme: a multi-site for the long-term survey of the tropospheric composition and climate change. Atmospheric Meas. Tech. 13, 3413–3445 (2020).

## Acknowledgments

This initiative is jointly financed by the ATMO-ACCESS, encouraging international collaborations within the European ACTRIS network. The campaign is encouraged by the National Institute of Sciences of the Universe (CNRS-INSU) via the support of the CO-PDD instrumented site, and aerosol measurement activities within the CLAP national observation service, the MOCC@PUY LEFE-CHAT project and the ANR OPTIC project.

## Scientific Contexts

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## Primary Results

<figure><img src="image_20.png" /><figcaption>How "atmospheric aging" modifies the INP properties of dust particles?
Are dust particles good vectors for biological aerosols?
Link between biological aerosols and INP properties</figcaption></figure>

<figure><img src="image_21.png" /><figcaption>Cloudy events and cloud collections</figcaption></figure>

<figure><img src="image_22.png" /><figcaption>RADAR Cloud – MIRA & VOLDORAT + RADAR raining</figcaption></figure>

<figure><img src="image_23.png" /><figcaption>STUDY OF MULTIPHASIC ORGANIC MATTER</figcaption></figure>

<figure><img src="image_24.png" /><figcaption>Marine/continental origin air masses</figcaption></figure>

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中国 法国
FRANCE CHINE

1964 - 2024

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第8届中法大气环境国际研讨会
Sino-French Joint Workshop
on Atmospheric Environment

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November 6th - 10th, 2024 - BORDEAUX - FRANCE

<footnote n="1">¹ Laboratoire de Météorologie Physique, Université Clermont Auvergne, CNRS UMR 6016, 63178 Aubière, France</footnote>

<footnote n="2">² Observatoire de Physique du Globe de Clermont Ferrand, Université Clermont Auvergne, CNRS, UMS 833, 63178 Aubière, France</footnote>

<footnote n="3">³ Institut de Chimie de Clermont-Ferrand, Université Clermont Auvergne, CNRS, UMR 6296, 63178 Aubière, France</footnote>