IZABEL DA SILVA ANDRADE
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- Carbon dioxide and methane levels in surface waters along the São Vicente island in coastal region of São Paulo state2024 - ARAUJO, ELAINE C.; ANDRADE, IZABEL S.; MACEDO, FERNANDA de M.; CORREA, THAIS; ANDRADE, THAIS; BRAGA, ELISABETE S.; ANDRADE, MARIA de F.; LANDULFO, EDUARDOVarious studies explore the relationship between the rising levels of CO2 and CH4 (greenhouse gasses) in the atmosphere and climate changes, and how these increases are connected to human activities. The escalation of these gas species may have implications for the environment. Concerning coastal systems, the rise in greenhouse gas emissions could impact the environment through multiple pathways because the atmosphere and superficial ocean waters also have significant exchanges. The main purpose of this work is to study Greenhouse gasses (GHG), such as CO2 and CH4, on the superficial waters of the coastal region of São Paulo coast. The data were collected in situ on a vessel provided by the Institute of Oceanography of São Paulo University (IOUSP). The campaign was conducted in spring 2022 (10-11 Оctober) in the south of the coast of São Paulo state, traveling through cities with anthropogenic impacts in principal Santos city, which is located the main port of Sul America. For these in situ measurements a portable gas analyzer Microportable Greenhouse Gas Analyzers (LGR-ICOS ™ GLA Series) was used to detect the CO2 and CH4 spectra through the Off-Axis Integrated Cavity Output Spectroscopy (OA-ICOS) technique.
Artigo IPEN-doc 30956 Preliminary study of greenhouse gases near to Santos and São Sebastião ports2024 - ARAUJO, ELAINE C.; ANDRADE, IZABEL da S.; CORREA, THAIS; ANDRADE, THAIS; MACEDO, FERNANDA de M.; BRAGA, ELISABETE S.; ANDRADE, MARIA de F.; LANDULFO, EDUARDOThe carbon biogeochemical cycle in nature involves the atmosphere, ocean, terrestrial and marine biota, and mineral reservoirs, with major fluxes between the atmosphere and both terrestrial biota and ocean waters. Studies link the increase of CO2 and CH4 (GHG) to climate change and anthropogenic activities. Coastal zones have a significant impact on the carbon cycle. This study examines GHG concentrations in estuary systems close to port zones, focusing on Santos and São Sebastião ports in São Paulo, Brazil. Santos Port, the largest in Latin America, and São Sebastião Port, with a petroleum terminal, can be significant contributors of GEE. A preliminary campaign measured CO2 and CH4 for 27 hours using a portable GHG analyzer on the research vessel Albacora from the University of São Paulo's Oceanographic Institute. Results showed promising GHG concentrations, with CO2 levels above 420 ppm near Santos and above 450 ppm near São Sebastião, for methane, the major concentration was ~3 ppm, but in short period of acquisitions, in the major part of traject the level was between ~1.8 - ~1.9 ppm.Artigo IPEN-doc 30945 Investigating methane emissions from Landfill in the Metropolitan Region of São Paulo2024 - SILVA, THAIS A. da; ARAUJO, ELAINE C.; ANDRADE, IZABEL da S.; ANDRADE, MARIA de F.; LANDULFO, EDUARDOThis research addresses the escalating global levels of atmospheric methane, emphasizing the critical need for understanding its sources and behavior. Landfills are identified as methane super emitters, because its rates range from 1,000 to 3,000 kg/h. Focusing on the Landfill in the district of São Mateus, in the city of São Paulo, the study aims to investigate the significance of landfills in the rising methane levels, emphasizing the impact of super emitters and methane hotspots. Field campaigns conducted on February 15th and April 06th, 2023, utilized a portable greenhouse gas analyzer (ABB) to measure methane concentrations. Meteorological parameters from ERA5 and the AERMOD Modeling System were used for a comprehensive analysis. The results highlight elevated methane concentrations around the Landfill, emphasizing its role as a significant methane super emitter. The study underscores the importance of such analyses in understanding the impact of landfills on atmospheric methane levels.Artigo IPEN-doc 30789 Evaluation of the potential for greenhouse gas (CO2, CH4) emissions in the southern São Paulo coastal region, Cananéia-Iguape system2024 - ARAUJO, ELAINE C.; CORREA, THAIS; ANDRADE, IZABEL da S.; MACEDO, FERNANDA de M.; MARQUES, MARCIA T.; ANDRADE, THAIS; SOUTO-OLIVEIRA, CARLOS E.; BRAGA, ELISABETE S.; ANDRADE, MARIA de F.; LANDULFO, EDUARDOThe emissions of CH4 and CO2, the primary greenhouse gases, have a significant impact on radiative forcing. This study investigated these gases along the Cananéia-Iguape estuarine system on the southern coast of the State of São Paulo, Brazil, which is a mangrove region characterized by low anthropogenic impact and a sparse population. As such, this area provides an ideal location for identifying natural emissions and background concentrations. The data for this study were collected using a portable gas analyzer (LGRICOSTM GLA131), known for its high sensitivity and precision in detecting gases, mounted on a research boat. The results obtained were promising for both gases. A small variability in CH4 concentrations was observed along the route, ranging from 1.84 ppm to 1.95 ppm, while CO2, showed greater variation in values obtained during routes, ranging from approximately 411 ppm to 575 ppm. This study underscores the importance of investigating areas with minimal environmental impact. Together with future analyses, this research should help improve Greenhouse Gas (GHG) inventories in Brazil by providing valuable baseline data for comparisons with more impacted areas.