Articles | Volume 21, issue 1
https://doi.org/10.5194/acp-21-339-2021
https://doi.org/10.5194/acp-21-339-2021
Research article
 | 
14 Jan 2021
Research article |  | 14 Jan 2021

The friagem event in the central Amazon and its influence on micrometeorological variables and atmospheric chemistry

Guilherme F. Camarinha-Neto, Julia C. P. Cohen, Cléo Q. Dias-Júnior, Matthias Sörgel, José Henrique Cattanio, Alessandro Araújo, Stefan Wolff, Paulo A. F. Kuhn, Rodrigo A. F. Souza, Luciana V. Rizzo, and Paulo Artaxo

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Short summary
It was observed that friagem phenomena (incursion of cold waves from the high latitudes of the Southern Hemisphere to the Amazon region), very common in the dry season of the Amazon region, produced significant changes in microclimate and atmospheric chemistry. Moreover, the effects of the friagem change the surface O3 and CO2 mixing ratios and therefore interfere deeply in the microclimatic conditions and the chemical composition of the atmosphere above the rainforest.
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