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Aerosol characteristics and particle production in the upper troposphere over the Amazon Basin

Andreae, Meinrat O. and Afchine, Armin and Albrecht, Rachel I. and Holanda, Bruna Amorim and Artaxo, Paulo and Barbosa, Henrique M. J. and Borrmann, Stephan and Cecchini, Micael A. and Costa, Anja and Dollner, Maximilian and Fütterer, Daniel Alexander and Järvinen, Emma and Jurkat, Tina and Klimach, Thomas and Konemann, Tobias and Knote, Christoph and Krämer, Martina and Krisna, Trismono C. and Machado, Luiz A. T. and Mertes, Stephan and Minikin, Andreas and Pöhlker, Christopher and Pöhlker, Mira L. and Pöschl, Ulrich and Rosenfeld, Daniel and Sauer, Daniel and Schlager, Hans and Schnaiter, Martin and Schneider, Johannes and Schulz, Christiane and Spanu, Antonio and Sperling, Vinicius B. and Voigt, Christiane and Walser, Adrian and Wang, Jian and Weinzierl, Bernadett and Wendisch, Manfred and Ziereis, Helmut (2018) Aerosol characteristics and particle production in the upper troposphere over the Amazon Basin. Atmospheric Chemistry and Physics (ACP), 18 (2), pp. 921-961. Copernicus Publications. doi: 10.5194/acp-18-921-2018. ISSN 1680-7316.

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Official URL: http://dx.doi.org/10.5194/acp-18-921-2018


Observations over the Amazon Basin showed high aerosol particle concentrations in the upper troposphere (UT) between 8 and 15 km altitude, with number densities (normalized to standard temperature and pressure) often exceeding those in the planetary boundary layer (PBL) by one or two orders of magnitude. The measurements were made during the German-Brazilian cooperative aircraft campaign ACRIDICON-CHUVA on the German High Altitude and Long Range Research Aircraft (HALO). The campaign took place over the Amazon Basin in September/October 2014, with the objective of studying tropical deep convective clouds over the Amazon rainforest and their interactions with atmospheric trace gases, aerosol particles, and atmospheric radiation. Aerosol enhancements were observed consistently on all flights during which the UT was probed, using several aerosol metrics, including condensation nuclei (CN), cloud condensation nuclei (CCN), and chemical species mass concentrations. The enhanced UT particles differed in their composition and size distribution from the aerosol in the BL, ruling out convective transport of combustion-derived particles from the BL as a source. The air in the immediate outflow of deep convective clouds was depleted in aerosol particles, whereas strongly enhanced number concentrations of small particles (<90 nm diameter) were found in UT regions that had experienced outflow from deep convection in the preceding 5-72 hours. We also found elevated concentrations of larger (>90 nm) particles in the UT, which consisted mostly of organic matter and nitrate and were very effective CCN.

Item URL in elib:https://elib.dlr.de/120048/
Document Type:Article
Title:Aerosol characteristics and particle production in the upper troposphere over the Amazon Basin
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Andreae, Meinrat O.MPI für Chemie, MainzUNSPECIFIED
Afchine, ArminFZ JülichUNSPECIFIED
Albrecht, Rachel I.Instituto Nacional de Pesquisas Espaciais (INPE)UNSPECIFIED
Holanda, Bruna AmorimMPI für Chemie, MainzUNSPECIFIED
Artaxo, PauloUniversity of São Paulo, São Paulo, BrazilUNSPECIFIED
Barbosa, Henrique M. J.University of São Paulo, São Paulo, BrazilUNSPECIFIED
Borrmann, StephanMPI für Chemie, MainzUNSPECIFIED
Cecchini, Micael A.Univ. Sao Paulo, BrasilienUNSPECIFIED
Dollner, MaximilianLMU München, DLR-IPAUNSPECIFIED
Fütterer, Daniel AlexanderDaniel.Fuetterer (at) dlr.deUNSPECIFIED
Järvinen, Emmakit, KarlsruheUNSPECIFIED
Klimach, Thomasmpi f. chemie, mainzUNSPECIFIED
Konemann, TobiasMPI für Chemie, MainzUNSPECIFIED
Knote, ChristophLMU MünchenUNSPECIFIED
Krämer, MartinaFZ JülichUNSPECIFIED
Krisna, Trismono C.Univ. LeipzigUNSPECIFIED
Machado, Luiz A. T.Instituto Nacional de Pesquisas Espaciais, São José dos Campos, BrazilUNSPECIFIED
Mertes, Stephantropos, LeipzigUNSPECIFIED
Minikin, AndreasAndreas.Minikin (at) dlr.dehttps://orcid.org/0000-0003-0999-4657
Pöhlker, ChristopherMPI für Chemie, MainzUNSPECIFIED
Pöhlker, Mira L.MPI für Chemie, MainzUNSPECIFIED
Pöschl, Ulrichmpi für chemie, mainzUNSPECIFIED
Rosenfeld, Danielhebrew univ., jerusalem, isrUNSPECIFIED
Sauer, DanielDLR, IPAhttps://orcid.org/0000-0002-0317-5063
Schnaiter, Martinkit, KarlsruheUNSPECIFIED
Schneider, JohannesMPICUNSPECIFIED
Schulz, ChristianeMPI für Chemie, MainzUNSPECIFIED
Sperling, Vinicius B.INPE, São José dos Campos, BrasilienUNSPECIFIED
Voigt, ChristianeDLR, IPAhttps://orcid.org/0000-0001-8925-7731
Wang, JianBrookhaven Nat. Lab., Upton, NY, USAUNSPECIFIED
Weinzierl, BernadettUniv. Wien, Aerosol Physics, AustriaUNSPECIFIED
Wendisch, ManfredUniv. LeipzigUNSPECIFIED
Ziereis, HelmutDLR, IPAhttps://orcid.org/0000-0001-5483-5669
Journal or Publication Title:Atmospheric Chemistry and Physics (ACP)
Refereed publication:Yes
Open Access:Yes
Gold Open Access:Yes
In ISI Web of Science:Yes
DOI :10.5194/acp-18-921-2018
Page Range:pp. 921-961
Publisher:Copernicus Publications
Keywords:Aerosol, particle production, upper troposphere
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Earth Observation
DLR - Research area:Raumfahrt
DLR - Program:R EO - Earth Observation
DLR - Research theme (Project):R - Project Climatic relevance of atmospheric tracer gases, aerosols and clouds
Location: Oberpfaffenhofen
Institutes and Institutions:Institute of Atmospheric Physics > Cloud Physics
Institute of Atmospheric Physics > Atmospheric Trace Species
Deposited By: Voigt, Dr.rer.nat. Christiane
Deposited On:22 May 2018 11:02
Last Modified:02 May 2019 13:59

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