2 documents found, page 1 of 1
CCN activity and organic hygroscopicity of aerosols downwind of an urban region...
Thalman, Ryan M.; Sá, Suzane S. de; Palm, Brett B.; Barbosa, H. M. J.; Pöhlker, Mira L.; Alexander, Michael Lizabeth; Brito, Joel F.; Carbone, SamaraDuring the Observations and Modeling of the Green Ocean Amazon (GoAmazon2014/5) campaign, size-resolved cloud condensation nuclei (CCN) spectra were characterized at a research site (T3) 60 km downwind of the city of Manaus, Brazil, in central Amazonia for 1 year (12 March 2014 to 3 March 2015). Particle hygroscopicity (κCCN) and mixing state were derived from the size-resolved CCN spectra, and the hygroscopici...
Isoprene photochemistry over the Amazon rainforest
Liu, Yingjun; Brito, Joel F.; Dorris, Matthew R.; Rivera-Ríos, Jean C.; Seco, Roger; Bates, Kelvin H.; Artaxo, Paulo; Duvoisin, Sérgio JrIsoprene photooxidation is a major driver of atmospheric chemistry over forested regions. Isoprene reacts with hydroxyl radicals (OH) and molecular oxygen to produce isoprene peroxy radicals (ISOPOO). These radicals can react with hydroperoxyl radicals (HO2) to dominantly produce hydroxyhydroperoxides (ISOPOOH). They can also react with nitric oxide (NO) to largely produce methyl vinyl ketone (MVK) and methacro...