How weather events modify aerosol particle size distributions in the Amazon boundary layer
Abstract N UFP N AIT N ACC N UFP N AIT N ACC N UFP N UFP N ACC N UFP N ACC N UFP N AIT N ACC show a different behavior, decreasing from approximately 100 min before the maximum lightning activity and reaching a minimum at the time of maximum lightning activity. The effect of cloud top height, cloud liquid water and rain rate shows the same behavior, but with different patterns between seasons. The convective processes do not occur continually but are probably modulated by gravity waves in the range of 1 to 5 h, creating a complex mechanism of interaction with a succession of updrafts and downdrafts, clouds, and clear-sky situations. The radar wind profiler measured the vertical distribution of the vertical velocity. These profiles show that downdrafts are mainly located below 10 km, while aircraft observations during the ACRIDICON–CHUVA campaign had shown maximum concentrations of ultrafine particles mainly above 10 km. Our study opens new scientific questions to be evaluated in order to understand the intricate physical and chemical mechanisms involved in the production of new particles in Amazonia.
- Standort
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Deutsche Nationalbibliothek Frankfurt am Main
- Umfang
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Online-Ressource
- Sprache
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Englisch
- Erschienen in
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How weather events modify aerosol particle size distributions in the Amazon boundary layer ; volume:21 ; number:23 ; year:2021 ; pages:18065-18086 ; extent:22
Atmospheric chemistry and physics ; 21, Heft 23 (2021), 18065-18086 (gesamt 22)
- Urheber
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Machado, Luiz
Menezes Franco, Marco Aurélio de
Kremper, Leslie A.
Ditas, Florian
Andreae, Meinrat O.
Artaxo, Paulo
Cecchini, Micael A.
Holanda, Bruna A.
Pöhlker, Mira L.
Saraiva, Ivan
Wolff, Stefan
Pöschl, Ulrich
Pöhlker, Christopher
- DOI
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10.5194/acp-21-18065-2021
- URN
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urn:nbn:de:101:1-2021121604551223126685
- Rechteinformation
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Open Access; Der Zugriff auf das Objekt ist unbeschränkt möglich.
- Letzte Aktualisierung
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15.08.2025, 07:26 MESZ
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Beteiligte
- Machado, Luiz
- Menezes Franco, Marco Aurélio de
- Kremper, Leslie A.
- Ditas, Florian
- Andreae, Meinrat O.
- Artaxo, Paulo
- Cecchini, Micael A.
- Holanda, Bruna A.
- Pöhlker, Mira L.
- Saraiva, Ivan
- Wolff, Stefan
- Pöschl, Ulrich
- Pöhlker, Christopher
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