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@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 = "22 jan. 2021"
}


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