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Studies find global COVID-19 lockdowns have significantly reduced PM2.5 and NO2 pollution, but ozone up

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Levels of two major air pollutants have been reduced significantly since lockdowns began in response to the COVID-19 pandemic, but a secondary pollutant—ground-level ozone—has increased in China, according to new research. Ozone is harmful to humans at ground-level, causing pulmonary and heart disease. —Guy Brasseur.

Ozone 291
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Study links ambient PM2.5 and ozone specifically caused by vehicle exhaust emissions to ~361,000 premature deaths worldwide in 2010 and ~385,000 in 2015

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and ozone deaths, associated mortality rates, and population in G20 economies in 2015. and ozone worldwide in 2010 and ~385,000 in 2015, equivalent to 11.7% and ozone premature deaths in 2010 and 11.4% and ozone concentrations from transportation emissions resulted in 7.8 and ozone deaths in 2015, broken out by subsector.

Ozone 230
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EPHA: Coronavirus threat greater for polluted cities; clean air returning to cities in lockdown

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Dr Sara De Matteis, Associate Professor in Occupational and Environmental Medicine at Cagliari University, Italy, and member of the ERS Environmental Health Committee said: Urban air quality has improved in the last half century, but petrol and especially diesel vehicle fumes remain a serious problem. Bottom: NO 2 has also dropped.

Pollution 269
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Satellite data show resurgence in NO2 emissions over China

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The satellite carries the Tropomi instrument to map a multitude of trace gases such as nitrogen dioxide, ozone, formaldehyde, sulfur dioxide, methane, carbon monoxide and aerosols. ©ESA/ATG Sentinel-5 Precursor is the first Copernicus mission dedicated to monitoring the atmosphere. ©ESA/ATG medialab.

Emissions 473
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US, China, and G-20 agree to work to global phase down of HFCs

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This was agreed by: Argentina, Australia, Brazil, Canada, China, France, Germany, India, Indonesia, Italy, Japan, Korea, Mexico, Russia, Saudi Arabia, South Africa, Turkey,the United Kingdom, the United States, and the European Union, as well as Ethiopia, Spain, Senegal, Brunei, Kazakhstan, and Singapore.

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EEA report finds more action needed to protect Europe’s most vulnerable citizens from air pollution, noise and extreme temperatures

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Many regions in Bulgaria, Croatia, Greece, Italy, Portugal and Spain are also characterized by lower incomes and education, higher levels of unemployment and larger elderly populations. Extreme temperatures. Southern and south-eastern European regions are more affected by higher temperatures.

Pollution 265
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Study: air pollution causes 800,000 extra deaths a year in Europe and 8.8 million worldwide

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years in life expectancy); 136 in Italy (reduction in life expectancy of 1.9 They applied these to a new model of global exposure and death rates and to data from the WHO, which included information on population density, geographical locations, ages, risk factors for several diseases and causes of death. They focused particularly on PM 2.5

Pollution 320