Urban climate assessment in the ABC Paulista Region of São Paulo, Brazil

Valverde, María Cleofé; Coelho, Lúcia Helena Gomes; Cardoso, Andréa; Paiva, Humberto de; Brambila, Ricardo; Boian, Cláudia; Martinelli, Paula; Valdambrini, Natasha Murgu

doi:10.1016/j.scitotenv.2020.139303

Cited by 8 publications

(16 citation statements)

References 34 publications

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“…MASP is located on a 700 m plateau above mean sea level, and approximately 50 km inland from the coast. The predominant winds are from the southeast (IAG-USP, 2015a), and low level circulation is dominated by the sea breeze entrance, mountain-valley circulation and urban effects (Oliveira et al, 2003;Ribeiro et al, 2018;Valverde et al, 2020). While the sea breeze may contribute to the dispersion of the urban plume, the transport of air pollutants from industrial areas in the coastal region cannot be discarded.…”

Section: Methodology Characterization Of the Study Areamentioning

confidence: 99%

“…The summer is wet and warm, with mean values of temperature and RH of 23.2°C and 78.8% in January. The highest monthly rainfalls occur in the summer, reaching 242 mm.month -1 in January on average, while August is typically the month with the lowest amount of rainfall, 26 mm.month -1 (Valverde et al, 2020). The planetary boundary layer (PBL) height at MASP shows a daytime maximum of about 1,500 m in the summer and 1,100 m in the winter, related to seasonal variations in the heat fluxes at surface (Piñero Sánchez et al, 2020).…”

Section: Methodology Characterization Of the Study Areamentioning

confidence: 99%

“…However, despite the particularities of air pollution sources and dynamics, few atmospheric studies were dedicated to the ABC region. Most of them focused on air pollution health impacts (e.g., Chiarelli et al, 2011;Negrete et al, 2010;Silva et al, 2017), on urban climate (Valverde, 2017;Valverde et al, 2020), and a few on ambient air pollution measurements (Saiki et al, 2007;Savóia et al, 2009;Caumo et al, 2017;Guimarães et al, 2019). This study contributes to the filling of this gap, describing the variability of air pollutant concentrations in the ABC region, accounting for its particularities on pollution sources and atmospheric conditions.…”

Section: Introductionmentioning

confidence: 99%

“…In the ABC region, the predominant winds are from southeast (IAG-USP, 2015a), with great influence of the sea breeze and mountain-valley circulation (Ribeiro et al, 2018;Valverde et al, 2020). The southeastern winds can transport region atmospheric pollutants produced at coastal cities (such as Cubatão and Baixada Santista), marine emissions and biogenic emissions from Mata Atlântica rainforest fragments (Carvalho et al, 2012;Ribeiro et al, 2018) to the ABC.…”

Section: Introductionmentioning

confidence: 99%

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Air pollutants associated with surface meteorological conditions in São Paulo’s ABC region

Silva

Oliveira

Drumond

et al. 2021

Rev. Bras. Ciênc. Ambient.

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Air pollution is one the main environmental problems in urban areas like the Metropolitan Area of São Paulo (MASP) in Brazil, where millions of inhabitants are exposed to pollution concentrations above the standards, with potential health impacts. Exposure is unequal throughout MASP, relying on the dynamics of local emission sources interplaying with weather and climate in a regional scale. The ABC region — ABC standing for Santo André, São Bernardo do Campo and São Caetano do Sul, the cities the area originally comprised of — is MASP’s largest industrial center, sitting in its southeast border, and encloses environmental protection areas. That leads to a unique emission profile that differ from the metropolis center. This study aims to characterize the variability of atmospheric pollutants in the ABC region in 2015, investigating possible sources and associations with surface meteorological conditions. Multivariate statistical analyses were applied to data from seven air quality monitoring stations and surface meteorological variables. Results show that São Bernardo do Campo stood out, with O3 concentrations 20% higher (43±19 µg.m-3) than the other sites, while São Caetano do Sul had the highest annual mean PM10 concentrations (39±19 µg.m-3), mostly related to vehicular emissions. Relative humidity was negatively correlated with primary pollutants, while temperature and radiation correlated with O3. Unusually high O3 concentrations were observed in January of 2015, concomitant with negative anomalies of precipitation and relative humidity, likely associated with the 2014/2015 summer drought event in Southeast Brazil. Overall, results show that local emission sources significantly impact air pollution loading and its diurnal variability, particularly in the case of primary pollutants. Climate modulates the seasonal concentration variability, and regional scale weather phenomena may impact air quality conditions. To reach concentration standards everywhere, policy makers must be aware of processes occurring in different spatial scales that determine air quality.

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Section: Methodology Characterization Of the Study Areamentioning

confidence: 99%

Section: Methodology Characterization Of the Study Areamentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Air pollutants associated with surface meteorological conditions in São Paulo’s ABC region

Silva

Oliveira

Drumond

et al. 2021

Rev. Bras. Ciênc. Ambient.

View full text Add to dashboard Cite

show abstract

“…O município de Mauá apresenta um relevo muito ondulado ao longo da sua extensão, e muitos bairros se formaram na periferia e nas suas áreas mais altas (morros) de nascentes, como é o caso do bairro Zaíra (Figura 4). Essa rugosidade contribui para que os ventos nessa região sejam predominantemente do sudoeste (SW-W) no período da tarde, principalmente no verão e na primavera, trazendo os ventos úmidos do mar (Valverde et al, 2020). Estas caraterísticas de vento e de relevo pode contribuir para a maior intensidade de chuva sobre Zaíra -Mauá (Z_157).…”

Section: Resultados E Discussõesunclassified