@Article{BelaFFMBWGWAA:2014:OzPrTr,
author = "Bela, M. M. and Freitas, Karla Maria Longo de and Freitas, Saulo
Ribeiro de and Moreira, Demerval Soares and Beck, V. and Wofsy, S.
C. and Gerbig, C. and Wiedemann, K. and Andreae, M. O. and Artaxo,
P.",
affiliation = "{Instituto Nacional de Pesquisas Espaciais (INPE)} and {Instituto
Nacional de Pesquisas Espaciais (INPE)} and {Instituto Nacional de
Pesquisas Espaciais (INPE)} and {Instituto Nacional de Pesquisas
Espaciais (INPE)} and {Max Planck Institute for Biogeochemistry}
and {Harvard University} and {Max Planck Institute for
Biogeochemistry} and {Harvard University} and {Max Planck
Institute for Chemistry} and {University of Colorado}",
title = "Ozone production and transport over the Amazon Basin during the
dry-to-wet and wet-to-dry transition seasons",
journal = "Atmospheric Chemistry and Physics Discussion",
year = "2014",
volume = "14",
number = "10",
pages = "14005--14070",
keywords = "ozone, Amazon Basin.",
abstract = "The Regional Carbon Balance in Amazonia (BARCA) campaign provided
the first Amazon Basin-wide aircraft measurements of O3 during
both the dry-to-wet (November and December 2008) and wet-to-dry
(May 2009) transition seasons. Extremely low background values
(<20 ppb) were observed to the west and north of Manaus in both
seasons and in all regions during the wet-to-dry transition. On
the other hand, elevated O3 levels (4060 ppb) were seen during the
dry-to-wet transition to the east and south of Manaus, where
biomass burning emissions of O3 precursors were present. Chemistry
simulations with the CCATT-BRAMS and WRF-Chem models are within
the error bars of the observed O3 profiles in the boundary layer
(03 km a.s.l.) in polluted conditions. However, the models
overestimate O3 in the boundary layer in clean conditions, despite
lacking the predominant NO source from soil. In addition, O3
simulated by the models was either within the error bars or lower
than BARCA observations in mid-levels (35 km a.s.l.), indicating
that the models do not represent the free troposphere boundary
layer gradient in O3. Total tropospheric O3 retrieved from OMI/MLS
was higher than that simulated by the models, suggesting that the
satellite observations are dominated by the middle troposphere and
long-range processes and are not a~good indication of O3
conditions in the PBL. Additional simulations with WRF-Chem showed
that the model O3 production is very sensitive to both the O3
deposition velocities, which were about one half of observed
values, and the NOx emissions. These results have implications for
the monitoring and prediction of increases in O3 production in the
Amazon Basin as the regional population grows.",
doi = "10.5194/acpd-14-14005-2014",
url = "http://dx.doi.org/10.5194/acpd-14-14005-2014",
issn = "1680-7367",
label = "lattes: 0648767431075703 4 BelaLFMBWGWAA:2014:OzPrTr",
language = "en",
targetfile = "acpd-14-14005-2014-print.pdf",
url = "www.atmos-chem-phys-discuss.net/14/14005/2014/",
urlaccessdate = "25 abr. 2024"
}