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• W3033200947 endingPage "139755" @default.
• W3033200947 startingPage "139755" @default.
• W3033200947 abstract "Biomass burning (BB) emissions significantly deteriorate air quality in many regions worldwide, impact human health and perturbing Earth's radiation budget and climate. South America is one of largest contributors to BB emissions globally. After Amazonia, BB emissions from open and agricultural fires of Northern South America (NSA) are the most significant. Recent evidence shows a strong correlation between fire counts in NSA and Brown Carbon in some Colombian cities, suggesting a substantial seasonal contribution of regional BB sources to air pollution levels in the densely populated areas of NSA. In this work we use the atmospheric regional chemical transport model WRF-Chem to assess the contribution of open BB events to pollutant concentration and to estimate potential health impacts associated with wildfire events in NSA. Three nested domains are used to simulate atmospheric composition in the Northern part of South America and the Caribbean. Simulations included biogenic and anthropogenic emissions from a global emission inventory merged with local emissions for the city of Bogotá. Two modelling scenarios were considered, a base case without BB emissions (NO_FIRE) and a sensitivity scenario with BB emissions. Simulations were carried out for periods of strong BB activity in NSA. In the NO_FIRE scenario, aerosol concentrations are unrealistically low. When BB emissions are is included background PM2.5 concentrations increase 80%. The increment in aerosol concentrations is mainly driven by Secondary Organic Aerosols. In the case of Bogotá, the most densely populated city in the domain, monthly mean increase in PM2.5 is 3.3 μg m−3 and 4.3 ppb for O3. Modeled meteorological and air pollution fields are in better agreement with observations when high spatial resolution (3 × 3 km) is used in the simulations. The total estimated short-term all-cause mortality associated to BB during February in the region is 171 cases, 88 PM2.5-related and 83 O3-related mortality." @default.
• W3033200947 created "2020-06-12" @default.
• W3033200947 creator A5024482982 @default.
• W3033200947 creator A5045600846 @default.
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• W3033200947 date "2020-10-01" @default.
• W3033200947 modified "2023-10-14" @default.
• W3033200947 title "Estimating the air quality and health impacts of biomass burning in northern South America using a chemical transport model" @default.
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• W3033200947 doi "https://doi.org/10.1016/j.scitotenv.2020.139755" @default.
• W3033200947 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/32758934" @default.
• W3033200947 hasPublicationYear "2020" @default.
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