@InProceedings{VelaAlVeHeFiPe:2020:NeMoFr,
author = "Vela, Angel Vara and Alvim, D{\'e}bora Souza and Vendrasco, Eder
Paulo and Herdies, Dirceu Lu{\'{\i}}s and Figueroa, Silvio Nilo
and Pendharkar, Jayant",
affiliation = "{Universidade de S{\~a}o Paulo (USP)} and {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
{Instituto Nacional de Pesquisas Espaciais (INPE)}",
title = "A new modeling framework for air pollution forecasting in South
America",
year = "2020",
organization = "EGU General Assembly",
abstract = "Biomass burning episodes are quite common in the central region of
South America and represent the dominant aerosol sources during
the dry/burning, between August and October. Large amounts of
trace gases and aerosols injected into the atmosphere from these
fire events can then be efficiently transported to urban areas in
southeastern South America, thus affecting air quality over those
areas. Observational data have been of fundamental importance to
understand the evolution and interaction of biomass burning
products with meteorology and chemistry. However, supplementing
this information with the use of a comprehensive air quality
modeling system in order to anticipate very acute air pollution
episodes, and thus avoiding severe impacts on human health, is
also required. Considering this, a new regional air pollution
modeling framework for South America is being implemented by the
Center for Weather Forecasting and Climate Studies (CPTEC), the
National Weather Service of Brazil. This new system, based on the
Weather Research and Forecasting with Chemistry model (WRF-Chem;
Grell et al., 2005), is being run experimentally and its
operational implementation is underway. The forecasts were driven
by global forecast data from the GFS-FV3 model for meteorology and
from the WACCM model for chemistry, both data sets provided every
6 hours. WACCM forecasts are employed to map gas and aerosol
background concentrations to the WRF-Chem initial and boundary
conditions, according to the MOZCART chemical mechanism. Two
experiments of 48-hour real-time forecast simulations were
performed, on a daily basis, during August and September of 2018
and 2019. The experiment for 2019 includes the very strong 3-week
forest fire event when the Metropolitan Area of S{\~a}o Paulo,
the largest metropolitan area in South America, plunged into
darkness on August 19, with day turning into night. Model results
are in good domain-wide agreement with satellite data and also
with in situ measurements. Besides forecasts of meteorological
parameters, this new system provides forecasts of regional
distributions of primary chemical species (CO, SO2, NOx,
particulate matter including black carbon), of secondary species
(ozone, secondary organic aerosols) and air pollution related
health indices, all parameters with a resolution of 20 km and for
the next 72 hours.",
conference-location = "Online",
conference-year = "04-08 May",
doi = "10.5194/egusphere-egu2020-6445",
url = "http://dx.doi.org/10.5194/egusphere-egu2020-6445",
language = "en",
targetfile = "EGU2020-6445-print.pdf",
urlaccessdate = "21 maio 2024"
}