@Article{SaturnoDVHPCWBBCGAMMRSSWWAWPAP:2018:AfVoEm,
author = "Saturno, Jorge and Ditas, Florian and Vries, Marloes Penning de
and Holanda, Bruna A. and P{\"o}hlker, Mira L. and Carbone,
Samara and Walter, David and Bobrowski, Nicole and Brito, Joel and
Chi, Xuguang and Gutmann, Alexandra and Angelis, Isabella Hrabe de
and Machado, Luiz Augusto Toledo and Moran-Zuloaga, Daniel and
R{\"u}diger, Julian and Schneider, Johannes and Schulz,
Christiane and Wang, Qiaoqiao and Wendisch, Manfred and Artaxo,
Paulo and Wagner, Thomas and P{\"o}schl, Ulrich and Andreae,
Meinrat O. and P{\"o}hlker, Christopher",
affiliation = "{Max Planck Institute for Chemistry} and {Max Planck Institute for
Chemistry} and {Max Planck Institute for Chemistry} and {Max
Planck Institute for Chemistry} and {Max Planck Institute for
Chemistry} and {Universidade de S{\~a}o Paulo (USP)} and {Max
Planck Institute for Chemistry} and {University of Heidelberg} and
{Universidade de S{\~a}o Paulo (USP)} and {Nanjing Universit} and
{ohannes Gutenberg University} and {Max Planck Institute for
Chemistry} and {Instituto Nacional de Pesquisas Espaciais (INPE)}
and {Max Planck Institute for Chemistry} and {University of
Bayreuth} and {Max Planck Institute for Chemistry} and {Max Planck
Institute for Chemistry} and {Jinan University} and
{Universit{\"a}t Leipzig} and {Universidade de S{\~a}o Paulo
(USP)} and {Max Planck Institute for Chemistry} and {Max Planck
Institute for Chemistry} and {Max Planck Institute for Chemistry}
and {Max Planck Institute for Chemistry}",
title = "African volcanic emissions influencing atmospheric aerosols over
the Amazon rain forest",
journal = "Atmospheric Chemistry and Physics",
year = "2018",
volume = "18",
number = "14",
pages = "10391--10405",
month = "July",
abstract = "The long-range transport (LRT) of trace gases and aerosol
particles plays an important role for the composition of the
Amazonian rain forest atmosphere. Sulfate aerosols originate to a
substantial extent from LRT sources and play an important role in
the Amazonian atmosphere as strongly light-scattering particles
and effective cloud condensation nuclei. The transatlantic
transport of volcanic sulfur emissions from Africa has been
considered as a source of particulate sulfate in the Amazon;
however, direct observations have been lacking so far. This study
provides observational evidence for the influence of emissions
from the Nyamuragira-Nyiragongo volcanoes in Africa on Amazonian
aerosol properties and atmospheric composition during September
2014. Comprehensive ground-based and airborne aerosol measurements
together with satellite observations are used to investigate the
volcanic event. Under the volcanic influence, hourly mean sulfate
mass concentrations in the submicron size range reached up to
3.6\ \μg\ m\ĝ'3 at the Amazon Tall Tower
Observatory, the highest value ever reported in the Amazon region.
The substantial sulfate injection increased the aerosol
hygroscopicity with <i>i°</i> values up to 0.36, thus altering
aerosol-cloud interactions over the rain forest. Airborne
measurements and satellite data indicate that the transatlantic
transport of volcanogenic aerosols occurred in two major volcanic
plumes with a sulfate-enhanced layer between 4 and 5\ km of
altitude. This study demonstrates how African aerosol sources,
such as volcanic sulfur emissions, can substantially affect the
aerosol cycling and atmospheric processes in Amazonia.",
doi = "10.5194/acp-18-10391-2018",
url = "http://dx.doi.org/10.5194/acp-18-10391-2018",
issn = "1680-7316 and 1680-7324",
language = "en",
targetfile = "saturno_african.pdf",
urlaccessdate = "27 abr. 2024"
}