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2020 ; 266
(Pt 1
): 115042
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Air quality during the COVID-19: PM(2 5) analysis in the 50 most polluted capital
cities in the world
#MMPMID32650158
Rodríguez-Urrego D
; Rodríguez-Urrego L
Environ Pollut
2020[Nov]; 266
(Pt 1
): 115042
PMID32650158
show ga
On December 31, 2019, the Chinese authorities reported to the World Health
Organization (WHO) the outbreak of a new strain of coronavirus that causes a
serious disease in the city of Wuhan, China. This outbreak was classified as
SARS-CoV2 and is the cause of the COVID-19 disease. On March 11, 2020, the WHO
declares it a Pandemic and today it is considered the greatest challenge in
global health that humanity has faced since World War II and it is estimated that
between 40 and 60% of the population worldwide will catch the virus. This has
caused enormous challenges in countries around the world in social, economic,
environmental and obviously health issues. These challenges are mainly due to the
effects of the established quarantines in almost all capitals and major cities
around the world, from Asia, Europe to America. However, these lockdown which
began worldwide from January 23, have had a significant impact on the environment
and on the air quality of cities as recently reported by NASA (National
Aeronautics and Space Administration) and ESA (European Space Agency), with
reductions according to them of up to 30% in some of the epicenters such as the
case of Wuhan. Knowing that air pollution causes approximately 29% of lung cancer
deaths, 43% of COPD deaths, and 25% of ischemic heart disease deaths, it is
important to know the effects of quarantines in cities regarding air quality to
take measures that favor populations and urban ecosystems when the emergency
ends. Therefore, this paper describes the behavior of PM(2.5) emissions
particulate matter from the 50 most polluted capital cities in the world
according to the WHO, measured before-after the start of the quarantine.
Likewise, the impact at the local and global level of this emissions behavior,
which averaged 12% of PM(2.5) decrease in these cities.