Análise da Espessura ótica dos Aerossóis do Sensor OMI na America do Sul

Calado, Paulo Antunes Dias Pereira; Barbosa, Emylle Isabele Gonçalves; Mariano, Glauber Lopes

doi:10.1590/0102-77863550105

Cited by 1 publication

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References 25 publications

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“…These particles can have adverse impacts on air quality, human health and the environment. In the South, industrial and urban activities generate pollutants that increase aerosols, especially in densely populated cities (Calado et al, 2021). In addition, in this region the values do not vary greatly due to the presence of a more homogeneous precipitation regime throughout the year (Reboita et al, 2015).…”

Section: Resultsmentioning

confidence: 93%

Evaluation of Aerosol Optical Depth (Aod) Estimated by Copernicus Atmosphere Monitoring Service (Cams) in Brazil

Júnior,

Curado,

Palácios

et al. 2024

Preprint

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The optical depth of aerosols plays a crucial role in scientific research and environmental policies, making it possible to understand the distribution and extent of aerosols in various regions of Brazil. The objective of this study is to evaluate the estimates of Aerosol Optical Depth (AOD) from the Copernicus Atmosphere Monitoring Service (CAMS) product in Brazil. The study covered the sites of Alta Floresta, Ji-Paraná, Rio Branco, Manaus, ATTO, São Paulo-EACH, São Paulo, Itajubá, Cuiabá, São Martinho, Petrolina and Campo Grande. Measured and estimated values were evaluated using Pearson correlation index "r", accuracy using Willmott index "d", Mean Squared Error, Mean Absolute Error and Percentage Bias. Results from the CAMS product showed good agreement with AOD measurements from the Aerosol Robotic Network. There was a strong correlation between the data, with Willmott index "d" values close to 1 and relatively low errors. However, significant differences were observed in some sites, such as Ji-Paraná, Rio Branco, Manaus and ATTO, where the CAMS tended to overestimate the AOD, while in Petrolina there was an underestimation. Variations in AOD occurred in various regions of Brazil over the years analyzed, with an increase during the dry season due to fires and human activities, and a reduction during the rainy months. The areas most affected were those close to the arc of deforestation in the Amazon. Aerosol concentrations have also been influenced by climatic factors, agricultural, industrial and urban activities in different regions of the country. This variability highlights the complexity of the natural and anthropogenic factors that affect air quality and emphasizes the importance of control and mitigation strategies for aerosol emissions. Therefore, the CAMS has demonstrated satisfactory performance in estimating the AOD in Brazil, providing valuable information on aerosol concentrations.

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Section: Resultsmentioning

confidence: 93%