Datensatz

Zusammenfassung

Sulfur dioxide pollution plumes have been investigated in the free troposphere onboard a research aircraft, using Chemical Ionization Mass Spectrometry (CIMS). The measurements have been carried out during the MEGAPLUME campaign in spring 2006 at the German Aerospace Center (DLR, Oberpfa enhofen, Germany), and during the international African Monsoon Multidisciplinary Analysis (AMMA) campaign in August 2006 inWest Africa (Ouagadougou, Burkina Faso). Sulfur dioxide is an important precursor gas of sulfuric acid which strongly contributes to aerosol formation. Aerosol particles directly and indirectly a ect our climate in various ways. Two di erent pollution plumes will be discussed in this work: a plume from Southeast Asia that had reached Europe after crossing the Paci c and Atlantic ocean, and an extended biomass burning layer o the coast of Ghana. The upward transport of sulfur dioxide in large convective thunderstorms during the African Monsoon has been investigated as another part of the AMMA campaign.