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WHO issues new, lower Global Air Quality Guidelines for classical pollutants

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New WHO has issued new Global Air Quality Guidelines (AQGs) that reduce levels of key air pollutants, some of which also contribute to climate change. Since WHO’s last 2005 global update, there has been a marked increase of evidence that shows how air pollution affects different aspects of health. Source: WHO. nitrogen dioxide (NO?)

Pollution 435
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Study suggests air pollution may be linked to heightened mouth cancer risk; PM2.5 and ozone

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High levels of air pollutants, especially fine particulate matter (PM 2.5 ) and to a lesser extent, ozone, may be linked to a heightened risk of developing mouth cancer, suggests a study by a team of Taiwanese researchers. Diagnoses of mouth cancer were then linked to local area readings for air pollutants taken in 2009.

Ozone 255
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WHO links 7 million premature deaths annually to air pollution; 12.5% of total global deaths

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The World Health Organization now estimates that in 2012 around 7 million people died—one in eight (12.5%) of total global deaths—as a result of air pollution exposure. million deaths linked to indoor air pollution and 2.6 million deaths related to outdoor air pollution—5.9 million deaths in total.

Pollution 358
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Study finds São Paulo switch from ethanol to gasoline dropped local ozone levels by 20%, increased CO and nitric oxide concentrations

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A study by a pair of researchers at Northwestern University found that when fuel prices drove residents of São Paulo, Brazil, to switch from ethanol to gasoline in their flexible-fuel vehicles, local ozone levels dropped 20%. At the same time, nitric oxide and carbon monoxide concentrations tended to go up. 3 , respectively, being 2.7

Ozone 316
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Study first to quantify amount of US pollution resulting from Chinese manufacturing for exports

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Average annual percentage of black carbon pollution related to Chinese exports. Dust, ozone and carbon can accumulate in valleys and basins in California and other Western states. We’ve outsourced our manufacturing and much of our pollution, but some of it is blowing back across the Pacific to haunt us.

Pollution 318
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Obama Administration withdraws proposed rulemaking on strengthened ozone standards

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In a statement released this morning, President Barack Obama said he has requested that US Environmental Protection Agency (EPA) Administrator Lisa Jackson withdraw the agency’s draft Ozone National Ambient Air Quality Standards (NAAQS) rulemaking. Earlier post.) National Ambient Air Quality Standards (NAAQS).

Ozone 259
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UNEP study: small number of measures targeting black carbon and tropospheric ozone could yield immediate climate benefits

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Black carbon and tropospheric ozone are harmful air pollutants that also contribute to climate change. Reducing black carbon and tropospheric ozone now will slow the rate of climate change within the first half of this century, the study said. Click to enlarge. °C (within a likely range of 0.2-0.7

Ozone 218