Chemistry of the Atmosphere - Field Experiment in Africa

August-September 2018, Sal (Cape Verde Islands)

CAFE-Africa was a HALO mission coordinated by the Air Chemistry Department of the Max Planck Institute for Chemistry (Mission PI: Jos Lelieveld).

Objectives of the mission were to study

- biomass burning emissions from Africa,
- long-distance air pollution transport over the Atlantic,
- ozone and radical chemistry: sources and sinks,
- oxidation capacity of cleans vs. polluted marine atmosphere,
- chemical aging of gases and aerosols by oxidation processes,
- oxidation products and reaction intermediates from VOX degradation,
- contraining models: effects on air quality and climate.

In order to address these objectives the scientific payload included a multitude of state-of-the-art in-situ and remote sensing instruments for the measurements of trace gases including radicals (OH, HO2, ROx), nitrogen oxides (NO, HONO, HNO3, PAN, NOy), volatile organic compounds (VOCs), partially oxidized volatile organic compounds (OVOCs, e.g., aldehydes, ketones and peroxides), reactive tracers (SO2, CO, CH4), ozone and aerosols.

The mission was conducted out of Sal (Cape Verde Islands) from August 06 until September 07, 2018.

Instruments of our group:
ALABAMA and C-ToF-AMS. Additionally, we operated the aerosol instrument AMETYST of DLR-IPA.

People involved:
F. Köllner, C. Schulz, K. Kaiser, O. Eppers. H. Clemen, J. Schneider

Collaboration partners
H. Harder, J. Williams, J. Crowley, H. Fischer, A. Pozzer, M. Pöhlker, U. Pöschl, M. Dorf, J. Lelieveld (MPIC)
D. Sauer (DLR)
B. Bohn (FZ Jülich)
A. Zahn (KIT)

Schneider, J., Weigel, R., Klimach, T., Dragoneas, A., Appel, O., Hünig, A., Molleker, S., Köllner, F., Clemen, H.-C., Eppers, O., Hoppe, P., Hoor, P., Mahnke, C., Krämer, M., Rolf, C., Grooß, J.-U., Zahn, A., Obersteiner, F., Ravegnani, F., Ulanovsky, A., Schlager, H., Scheibe, M., Diskin, G. S., DiGangi, J. P., Nowak, J. B., Zöger, M., and Borrmann, S.: Aircraft-based observation of meteoric material in lower-stratospheric aerosol particles between 15 and 68° N, Atmos. Chem. Phys., 21, 989–1013,, 2021.

Go to Editor View