Air Quality Standards and Extreme Ozone Events in the SAo Paulo Megacity

被引:14
|
作者
Chiquetto, Julio Barboza [1 ]
Siqueira Silva, Maria Elisa [2 ]
Cabral-Miranda, William [2 ]
Dutra Ribeiro, Flivia Noronha [3 ]
Ibarra-Espinosa, Sergio Alejandro [4 ,5 ]
Ynoue, Rita Yuri [5 ]
机构
[1] Univ Sao Paulo, Inst Adv Studies, BR-05508050 Sao Paulo, Brazil
[2] Univ Sao Paulo, Dept Geog, BR-05508000 Sao Paulo, Brazil
[3] Univ Sao Paulo, Dept Environm Management, BR-03828000 Sao Paulo, Brazil
[4] Chinese Acad Sci, Key Lab Wetland Ecol & Environm, Changchun 130102, Jilin, Peoples R China
[5] Univ Sao Paulo, Dept Atmospher Sci, BR-03178200 Sao Paulo, Brazil
来源
SUSTAINABILITY | 2019年 / 11卷 / 13期
基金
巴西圣保罗研究基金会;
关键词
air pollution; air quality modeling; ozone; urban environment; SAo Paulo; air pollution exposure; extreme events; vulnerability; environmental governance; cost analysis; POLLUTION; HEALTH; ASTHMA; CITY;
D O I
10.3390/su11133725
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
Ozone events in South America might be triggered by increasing air temperatures and dry conditions, leading to vulnerable population exposure. The current air quality standards and attention levels in SAo Paulo state, Brazil, are 40% higher and 25% higher, respectively, than the limits recommended by the World Health Organization (WHO). We simulated an extreme ozone event in the SAo Paulo megacity using the Weather Research and Forecast/Chemistry model during an extreme event characterized by positive anomalies of air temperature and solar radiation. Results were evaluated using the different air quality limits from SAo Paulo state and the WHO, also with socioeconomic vulnerability data from the Brazilian census and cost analysis for the public health system from the extreme episode. More than 3 million people in vulnerability conditions, such as low income and families with an above-average percentage of children, live in areas where ozone concentrations exceeded the attention levels of the WHO during the episode, which is ignored by the lenient SP state environmental laws. WHO air quality guidelines must be adopted urgently in developing nations in order to provide a more accurate basis for cost analysis and population exposure, particularly the for vulnerable population groups.
引用
收藏
页数:14
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