7 documents found, page 1 of 1
The Amazon Tall Tower Observatory (ATTO): Overview of pilot measurements on eco...
Andreae, Meinrat O.; Acevedo, Otávio C.; Araüjo, Alessandro Carioca de; Artaxo, Paulo; Barbosa, Cybelli G.G.; Barbosa, H. M. J.; Brito, Joel F.The Amazon Basin plays key roles in the carbon and water cycles, climate change, atmospheric chemistry, and biodiversity. It has already been changed significantly by human activities, and more pervasive change is expected to occur in the coming decades. It is therefore essential to establish long-term measurement sites that provide a baseline record of present-day climatic, biogeochemical, and atmospheric cond...
Understanding nighttime methane signals at the Amazon Tall Tower Observatory (A...
Botía, Santiago; Gerbig, Christoph; Marshall, Julia; Lavric, J. V.; Walter, David; Pöhlker, Christopher; A Holanda, Bruna; Fisch, Gilberto FernandoMethane (CH4) atmospheric mixing ratio measurements are analyzed for the period between June 2013 and November 2018 at the Amazon Tall Tower Observatory (ATTO). We describe the seasonal and diurnal patterns of nighttime events in which CH4 mixing ratios at the uppermost (79ma.g.l.) inlet are significantly higher than the lowermost inlet (4ma.g.l.) by 8ppb or more. These nighttime events were found to be associa...
Acridicon-chuva campaign: Studying tropical deep convective clouds and precipit...
Wendisch, Manfred; Pöschl, Ulrich; Andreae, Meinrat O.; Machado, Luiz Augusto Toledo; Albrecht, Rachel I.; Schlager, Hans; Rosenfeld, DanielComprehensive in situ and remote sensing observations of deep convective clouds using the new German research jet aircraft HALO have been performed over Amazonia to study the influence of anthropogenic aerosols on the cloud life cycle and precipitation formation processes. © 2016 American Meteorological Society.
Aerosol measurement methods to quantify spore emissions from fungi and cryptoga...
Löbs, Nina; Barbosa, Cybelli G.G.; Brill, Sebastian; Walter, David; Ditas, Florian; Oliveira Sá, Marta de; Araüjo, Alessandro Carioca deBioaerosols are considered to play a relevant role in atmospheric processes, but their sources, properties, and spatiotemporal distribution in the atmosphere are not yet well characterized. In the Amazon Basin, primary biological aerosol particles (PBAPs) account for a large fraction of coarse particulate matter, and fungal spores are among the most abundant PBAPs in this area as well as in other vegetated cont...
Observations of Manaus urban plume evolution and interaction with biogenic emis...
Cirino, Glauber G.; Brito, Joel F.; Barbosa, H. M. J.; Rizzo, Luciana Varanda; Tunved, Peter; Sá, Suzane S. de; Ji?enez, José Luis; Palm, Brett B.As part of the Observations and Modeling of the Green Ocean Amazon (GoAmazon 2014/5) Experiment, detailed aerosol and trace gas measurements were conducted near Manaus, a metropolis located in the central Amazon Basin. Measurements of aerosol particles and trace gases were done downwind Manaus at the sites T2 (Tiwa Hotel) and T3 (Manacapuru), at a distance of 8 and 70 km from Manaus, respectively. Based on in-p...
Long-term study on coarse mode aerosols in the Amazon rain forest with the freq...
Morán-Zuloaga, Daniel; Ditas, Florian; Walter, David; Saturno, Jorge; Brito, Joel F.; Carbone, Samara; Chi, Xuguang; Hrab? de Angelis, Isabella<p>In the Amazonian atmosphere, the aerosol coarse mode comprises a complex, diverse, and variable mixture of bioaerosols emitted from the rain forest ecosystem, long-range transported Saharan dust (we use Sahara as shorthand for the dust source regions in Africa north of the Equator), marine aerosols from the Atlantic Ocean, and coarse smoke particles from deforestation fires. For the rain forest, the coarse m...
Long-term observations of cloud condensation nuclei in the Amazon rain forest -...
Pöhlker, Mira L.; Pöhlker, Christopher; Ditas, Florian; Klimach, Thomas; Angelis, Isabella Hrabe de; Araüjo, Alessandro Carioca de; Brito, Joel F.Size-resolved long-term measurements of atmospheric aerosol and cloud condensation nuclei (CCN) concentrations and hygroscopicity were conducted at the remote Amazon Tall Tower Observatory (ATTO) in the central Amazon Basin over a 1-year period and full seasonal cycle (March 2014-February 2015). The measurements provide a climatology of CCN properties characteristic of a remote central Amazonian rain forest sit...