@Article{FreitasRodrLongPane:2012:ImMoAd,
author = "Freitas, Saulo Ribeiro de and Rodrigues, Lucia F. and Longo, Karla
Maria and Panetta, Jairo",
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)}",
title = "Impact of a monotonic advection scheme with low numerical
diffusion on transport modeling of emissions from biomass
burning",
journal = "Journal of Advances in Modeling Earth Systems",
year = "2012",
volume = "3",
number = "M01001",
pages = "26pp",
keywords = "System catt-brams, brazilian developments, atmospheric transport,
chemistry models, coupled aerosol, plume rise, conservation,
sensitivity, algorithms.",
abstract = "An advection scheme, which maintains the initial monotonic
characteristics of a tracer field being transported and at the
same time produces low numerical diffusion, is implemented in the
Coupled Chemistry-Aerosol-Tracer Transport model to the Brazilian
developments on the Regional Atmospheric Modeling System
(CCATT-BRAMS). Several comparisons of transport modeling using the
new and original (non-monotonic) CCATT-BRAMS formulations are
performed. Idealized 2-D non-divergent or divergent and stationary
or time-dependent wind fields are used to transport sharply
localized tracer distributions, as well as to verify if an
existent correlation of the mass mixing ratios of two interrelated
tracers is kept during the transport simulation. Further
comparisons are performed using realistic 3-D wind fields. We then
perform full simulations of real cases using data assimilation and
complete atmospheric physics. In these simulations, we address the
impacts of both advection schemes on the transport of biomass
burning emissions and the formation of secondary species from
non-linear chemical reactions of precursors. The results show that
the new scheme produces much more realistic transport patterns,
without generating spurious oscillations and under- and overshoots
or spreading mass away from the local peaks. Increasing the
numerical diffusion in the original scheme in order to remove the
spurious oscillations and maintain the monotonicity of the
transported field causes excessive smoothing in the tracer
distribution, reducing the local gradients and maximum values and
unrealistically spreading mass away from the local peaks. As a
result, huge differences (hundreds of %) for relatively inert
tracers (like carbon monoxide) are found in the smoke plume cores.
In terms of the secondary chemical species formed by non-linear
reactions (like ozone), we found differences of up to 50% in our
simulations.",
doi = "10.1029/2011MS000084",
url = "http://dx.doi.org/10.1029/2011MS000084",
issn = "1942-2466",
label = "lattes: 9873289111461387 1 FreitasRodrLongPane:2012:ImMoAd",
language = "en",
url = "http://www.agu.org/journals/ms/ms1201/2011MS000084/",
urlaccessdate = "17 maio 2024"
}