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  Aerosol, Cloud, Precipitation, and Radiation Interactions and Dynamics of Convective Cloud Systems  
  Cloud processes of the main precipitation systems in Brazil: A contribution to cloud resolving modeling and to the GPM (GlobAl Precipitation Measurement)  
  Manaus, Brazil, September 2014  


The ACRIDICON-CHUVA overview paper appeared in the October 2016 issue of BAMS:
"Studying tropical deep convective clouds and precipitation over Amazonia using the new German research aircraft HALO"

"Thermodynamic correction of particle concentrations measured by underwing probes on fast-flying aircraft" Atmos. Meas. Tech., 9, 5135-5162, doi:10.5194/amt-9-5135-2016, 2016.

Collection of links

For Participants (password required)

Time Line

24-26 Oct 2016


Presentation Albrecht,Rachel
Presentation Andreae,Meinrat
Presentation Ewald,Florian
Presentation Holanda,Bruna
Presentation Luiz,Machado
Presentation Mertes,Stephan
Presentation Ziereis,Helmut
Presentation Zinner,Tobias




Aerosol-cloud-precipitation interaction in Amazonia during the ACRIDICON-CHUVA campaign

Ilha Bela-SP-Brazil

5./6. March 2015 First Data Meeting Mainz, Germany
3./4. October 2014 Ferry Flights Manaus-Sal-Oberpfaffenhofen
3.9.-2.10. 2014 ACRIDICON campaign

Manaus, Brazil

1./2. September 2014 Ferry Flights Oberpfaffenhofen-Sal-Manaus
20.-22. May 2014 Workshop on Convective Clouds São José dos Campos -INPE - Brazil

FLEXPART backward trajectory calculations for all ACRIDICON-CHUVA flights now available to campaign participants in the ACRIDICON-CHUVA area of the HALO DB

Related Project


 GoAmazonLOGO GoAmazon

ACRIDICON-CHUVA— Tropical Convective Clouds and Aerosol under Investigation


Aerosol, Clouds and Radiation in Tropical Clouds

Tropical Cloud

Within a cloud, a multitude of processes interact that involve, in addition to the cloud droplets, aerosols and radiation. These processes influence the cloud formation as well as the processing of the aerosols and the radiation budget. Convective Clouds are characterized by strong vertical mixing and large vertical extend. They thus involve large amounts of aerosols and cloud particles and significantly influence the radiaton budget. Complexity is increased in the case of frequently occuring mixed-phase clouds where water exists in solid state, liquid state and gas phase.

schematic of cloud composition and interactions

Schematic depicting the campaign goals: investigating the composition of and processes occuring within convective clouds.

Cloud investigation at Manaus

To obtain a better understanding of the interaction of aerosols, clouds and radiation in convective clouds, simultaneous measurements of all aspects is desireable. To this end, the ACRIDICON-CHUVA campaign was conducted in September 2014 with the German research aircraft HALO. The great range and high ceiling of this aircraft were important in order to sample the convective clouds with sufficient extend. During the same period, the CHUVA project obtained a multitude of ground-based measurements. In addition, the ARM Aerial Facility (AAF) Gulfstream-1 (G-1) was deployed simultaneously to the Amazon to also obtain measurements of cloud, trace gas, and aerosol properties. Here, the core area was close to Manaus with its pollution plume. In this manner, a multidimensional picture of the relevant processes and parameters can be obtained that allows for a more thorough study of the observed phenomena and more critical validation of the present state-of-art meteorological models.

HALO, landing after the measurement flight of 6. September.

Landing of HALO on 6. September.

About us

The ACRIDICON (short for Aerosol, Cloud, Precipitation, and Radiation Interactions and Dynamics of Convective Cloud Systems) campaign has been conducted by research groups from major German institutions. Through clustering this consortium can investigate convective clouds simultaneously from different perspectives.

The project was coordinated by M. Andreae (Max-Planck-Institut für Chemie), L. Machado ( Instituto Nacional de Pesquisas Espaciais), U. Pöschl (Max-Planck-Institut für Chemie), M. Wendisch (Universität Leipzig)

Scientific Steering Group: R. Albrecht (Universidade de São Paulo), M. Andreae (Max-Planck-Institut für Chemie), P. Artaxo (Universidade de São Paulo), L. Machado (Instituto Nacional de Pesquisas Espaciais), U. Pöschl (Max-Planck-Institut für Chemie), D. Rosenfeld (Hebrew University of Jerusalem), Hans Schlager (Deutsches Zentrum für Luft- und Raumfahrt), M. Yamasoe (Universidade de São Paulo), M. Wendisch (Universität Leipzig)

ACRIDICON-CHUVA and some GoAmazon 			

The following institutions participated:

German Aerospace Center

German Aerospace Center, Oberpfaffenhofen, Germany

Institute for Atmospheric Physics and Flight Experiments

Uni Frankfurt

Goethe University, Frankfurt am Main, Germany

Institute for Atmospheric and Environmental Sciences

Hebrew University, Jerusalem, Israel

Hebrew University of Jerusalem, Israel

Institute of Earth Sciences

Uni Mainz

Johannes-Gutenberg-University, Mainz, Germany

Institute for Atmospheric Physics


Karlsruhe Institute for Technology (KIT), Karlsruhe, Germany

Atmospheric Aerosol Research Group


Leibniz Institute for Tropospheric Research, Leipzig, Germany

Experimental Aerosol and Cloud Microphysics, Cloud Working Group


Leipzig University, Leipzig, Germany

Leipzig Institute for Meteorology

Uni Munich

Ludwig-Maximilians-University, Munich, Germany

Meteorological Institute München

Max-Planck-Institute for Chemistry, Mainz

Max Planck Institute for Chemistry, Mainz, Germany

Department Biogeochemistry, Department Multiphase Chemistry, Department Particle Chemistry

Physikalisch-Technische Bundesanstalt

Physikalisch-Technische Bundesanstalt, Braunschweig, Germany

Working Group Metrology in Molecular Spectroscopy

Research Center Jülich

Research Center Jülich (FZJ), Jülich, Germany

Institute of Energy and Climate Research (IEK-7)

Uni Heidelberg

Ruprecht-Karls-University, Heidelberg, Germany

Institute of Environmental Physics

The Brazilian participants in CHUVA can be found here:

Project CHUVA list of CHUVA participants


top Gunda Nitzsche, LIM, Stephanstr.3, 04103 Leipzig, Germany.