Abstract ID: 544

IMPACT OF MANAUS PLUME ON THE REGIONAL ATMOSPHERIC COMPOSITION

Today nearly half of the world’s population lives in cities, and by 2025 it is projected that two thirds of the world’s population will have settled in large urban areas. Densely crowded urban environments lead to serious issues in municipal management and local air pollution. Emissions of longer-lived pollutants from these concentrated population centers can affect atmospheric chemistry on the continental and global scale. Manaus with a population of 1.646.602, the largest city in north region and the seventh largest GDP (Gross Domestic Product) of Brazil, provides a testing ground for regional impact on air quality and climate of increasing urbanization, surrounded by the Amazon forest. In this context, we performed simulations to understanding the relative impact of Manaus anthropogenic sources and biomass burning on regional chemical composition, using the CCATT-BRAMS (Coupled Chemistry Aerosol and Tracer Transport model to the Brazilian developments on the Regional Atmospheric Modeling System), a eurelian chemistry transport model that solves the tracers mix ratios with the mass conservation equation and also includes chemical reactions and interaction between tracers and radiation (short and long wave). This work has been carried out with of grant from the IAI, in context of SAEMC project (South American Emissions, Megacities and Climate) and intent to study the atmosphere chemical composition modification over South America and its impacts on regional climate change.

Session:  Feedbacks to Climate - Emissions of natural and biomass burning particulates from vegetation and their effects on ecosystems and climate.

Presentation Type:  Poster