Evaluation of the potential for greenhouse gas (CO2 , CH4 ) emissions in the southern São Paulo coastal region, Cananéia-Iguape system

The 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 anthr...

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Main Authors: Elaine C. Araujo, Thais Correa, Izabel da S. Andrade, Fernanda de M. Macedo, Marcia T. Marques, Thais Andrade, Carlos Eduardo Souto-Oliveira, Elisabete S. Braga, Maria de F. Andrade, Eduardo Landulfo
Format: Article
Language:English
Published: Instituto Oceanográfico da Universidade de São Paulo 2024-08-01
Series:Ocean and Coastal Research
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Online Access:https://journals.usp.br/ocr/article/view/227918
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author Elaine C. Araujo
Thais Correa
Izabel da S. Andrade
Fernanda de M. Macedo
Marcia T. Marques
Thais Andrade
Carlos Eduardo Souto-Oliveira
Elisabete S. Braga
Maria de F. Andrade
Eduardo Landulfo
author_facet Elaine C. Araujo
Thais Correa
Izabel da S. Andrade
Fernanda de M. Macedo
Marcia T. Marques
Thais Andrade
Carlos Eduardo Souto-Oliveira
Elisabete S. Braga
Maria de F. Andrade
Eduardo Landulfo
author_sort Elaine C. Araujo
collection DOAJ
description The 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.
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spelling doaj-art-57a5646e62ed4ce1992bdffb7d9c683f2025-08-20T03:19:11ZengInstituto Oceanográfico da Universidade de São PauloOcean and Coastal Research2675-28242024-08-017210.1590/2675-2824072.22121Evaluation of the potential for greenhouse gas (CO2 , CH4 ) emissions in the southern São Paulo coastal region, Cananéia-Iguape systemElaine C. AraujoThais CorreaIzabel da S. AndradeFernanda de M. MacedoMarcia T. MarquesThais AndradeCarlos Eduardo Souto-OliveiraElisabete S. BragaMaria de F. AndradeEduardo Landulfo The 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. https://journals.usp.br/ocr/article/view/227918MethaneCarbon dioxideEstuaryGHGMicroportable gas analyzers
spellingShingle Elaine C. Araujo
Thais Correa
Izabel da S. Andrade
Fernanda de M. Macedo
Marcia T. Marques
Thais Andrade
Carlos Eduardo Souto-Oliveira
Elisabete S. Braga
Maria de F. Andrade
Eduardo Landulfo
Evaluation of the potential for greenhouse gas (CO2 , CH4 ) emissions in the southern São Paulo coastal region, Cananéia-Iguape system
Ocean and Coastal Research
Methane
Carbon dioxide
Estuary
GHG
Microportable gas analyzers
title Evaluation of the potential for greenhouse gas (CO2 , CH4 ) emissions in the southern São Paulo coastal region, Cananéia-Iguape system
title_full Evaluation of the potential for greenhouse gas (CO2 , CH4 ) emissions in the southern São Paulo coastal region, Cananéia-Iguape system
title_fullStr Evaluation of the potential for greenhouse gas (CO2 , CH4 ) emissions in the southern São Paulo coastal region, Cananéia-Iguape system
title_full_unstemmed Evaluation of the potential for greenhouse gas (CO2 , CH4 ) emissions in the southern São Paulo coastal region, Cananéia-Iguape system
title_short Evaluation of the potential for greenhouse gas (CO2 , CH4 ) emissions in the southern São Paulo coastal region, Cananéia-Iguape system
title_sort evaluation of the potential for greenhouse gas co2 ch4 emissions in the southern sao paulo coastal region cananeia iguape system
topic Methane
Carbon dioxide
Estuary
GHG
Microportable gas analyzers
url https://journals.usp.br/ocr/article/view/227918
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