Paulo Artaxo, Luciana Rizzo, Joel F. Brito, Henrique Barbosa, Andrea Arana, Elisa T. Sena, Glauber G. Cirino, Wanderlei Bastos, Scot Martin, Meinrat O.

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Paulo Artaxo, Luciana Rizzo, Joel F. Brito, Henrique Barbosa, Andrea Arana, Elisa T. Sena, Glauber G. Cirino, Wanderlei Bastos, Scot Martin, Meinrat O. Andreae Institute of Physics, University of São Paulo, Brazil, Faraday Discussions 165 – Tropospheric Aerosols Leeds, 23 July 2013

Long term (4 years) study on land use change in Amazonia. Effects on: 1.Aerosol population, composition, size distribution 2.Aerosol optical properties 3.Trace gas concentrations 4.Radiative forcing 5.Carbon uptake by the forest Interaction between forest biology and aerosols is very strong for PBAP as well as SOA

Time series of aerosol optical depth at the Central and Southern Amazonia with MODIS (550 nm) and AERONET (500 nm) retrievals from 1999 to 2012.

Fonte: Flávio Luizão. Rio Negro Manaus Rio Amazonas Rbio Cuieiras Foto: Carina Prado Two long term monitoring stations in Amazonia Manaus and Porto Velho

Porto Velho Porto Velho aerosol and trace gases sampling location

Porto Velho aerosol mass concentration and black carbon from 1999 to 2012

Aerosol size distributions: SMPS and AERONET

Manaus ACSM 2013 wet season measurements

ACSM measurements in Rondonia

Monthly statistics (2009 – 2012) for light scattering coefficient σ s at 637 nm and light absorption coefficient σ a at 637 nm in Mm -1 for Porto Velho (PVH, in black) and central Amazonia (TT34, in red). Single Scattering Albedo Lower at the pristine site Scattering, absorption and SSA in Manaus and Porto Velho

Average spatial distribution of the direct radiative forcing (DRF) of biomass burning aerosols in Amazonia during the dry season of 2010 CERES (Clouds and the Earth's Radiant Energy System) and MODIS

Land-use change radiative forcing. Forested areas are selected in red and deforested areas are selected in yellow. Mean Diurnal Radiative Forcing due to change in surface albedo in Rondonia: W/m 2 Mean Diurnal Aerosol Forcing Efficiency: Forest: W/m 2 Cerrado: W/m 2 Water column difference by 6-10% Forcing of water vapor column: -0.4 to -1.2 W m -2 Sena et al., 2013

Effects of aerosols on carbon uptake expressed as Net Ecosystem Exchange (NEE) at central Amazonia (TT34 forest preserved site), and at southern Amazonia (PVH impacted site).

Thanks for the attention!!!

Figure 1 – Annual deforestation rates in the Brazilian Amazonia from 1977 to 2012 measured by the PRODES (Projeto de Monitoramento do Desflorestamento na Amazônia Legal) program from INPE (The Brazilian National Institute for Space Research). Annual deforestation rates in the Brazilian Amazonia from 1977 to 2012

Seasonal variability (2009 – 2012) of ozone volume mixing ratios in Porto Velho (PVH) and central Amazonia (Manaus TT34 tower). Circles represent median values, and bars represent 10 and 90 percentiles.

Diurnal variability in scattering and absorption