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10.3390/ijerph17145124

http://scihub22266oqcxt.onion/10.3390/ijerph17145124
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suck abstract from ncbi


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pmid32679925      Int+J+Environ+Res+Public+Health 2020 ; 17 (14): ä
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  • Statistical Forecast of Pollution Episodes in Macao during National Holiday and COVID-19 #MMPMID32679925
  • Lei MT; Monjardino J; Mendes L; Goncalves D; Ferreira F
  • Int J Environ Res Public Health 2020[Jul]; 17 (14): ä PMID32679925show ga
  • Statistical methods such as multiple linear regression (MLR) and classification and regression tree (CART) analysis were used to build prediction models for the levels of pollutant concentrations in Macao using meteorological and air quality historical data to three periods: (i) from 2013 to 2016, (ii) from 2015 to 2018, and (iii) from 2013 to 2018. The variables retained by the models were identical for nitrogen dioxide (NO(2)), particulate matter (PM(10)), PM(2.5), but not for ozone (O(3)) Air pollution data from 2019 was used for validation purposes. The model for the 2013 to 2018 period was the one that performed best in prediction of the next-day concentrations levels in 2019, with high coefficient of determination (R(2)), between predicted and observed daily average concentrations (between 0.78 and 0.89 for all pollutants), and low root mean square error (RMSE), mean absolute error (MAE), and biases (BIAS). To understand if the prediction model was robust to extreme variations in pollutants concentration, a test was performed under the circumstances of a high pollution episode for PM(2.5) and O(3) during 2019, and the low pollution episode during the period of implementation of the preventive measures for COVID-19 pandemic. Regarding the high pollution episode, the period of the Chinese National Holiday of 2019 was selected, in which high concentration levels were identified for PM(2.5) and O(3), with peaks of daily concentration exceeding 55 mug/m(3) and 400 mug/m(3), respectively. The 2013 to 2018 model successfully predicted this high pollution episode with high coefficients of determination (of 0.92 for PM(2.5) and 0.82 for O(3)). The low pollution episode for PM(2.5) and O(3) was identified during the 2020 COVID-19 pandemic period, with a low record of daily concentration for PM(2.5) levels at 2 mug/m(3) and O(3) levels at 50 mug/m(3), respectively. The 2013 to 2018 model successfully predicted the low pollution episode for PM(2.5) and O(3) with a high coefficient of determination (0.86 and 0.84, respectively). Overall, the results demonstrate that the statistical forecast model is robust and able to correctly reproduce extreme air pollution events of both high and low concentration levels.
  • |*Holidays[MESH]
  • |Betacoronavirus/*isolation & purification[MESH]
  • |COVID-19[MESH]
  • |Coronavirus Infections/*epidemiology/virology[MESH]
  • |Forecasting[MESH]
  • |Humans[MESH]
  • |Macau[MESH]
  • |Models, Statistical[MESH]
  • |Nitrogen Dioxide/analysis[MESH]
  • |Ozone/analysis[MESH]
  • |Pandemics[MESH]
  • |Particulate Matter/*analysis[MESH]
  • |Pneumonia, Viral/*epidemiology/virology[MESH]
  • |Regression Analysis[MESH]


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