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Researchers say world faces air pollution pandemic

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Professors Jos Lelieveld and Thomas Münzel, of the Max Planck Institute for Chemistry and the Department of Cardiology of the University Medical Center Mainz in Mainz, Germany, who led the research, say the findings suggest the world is facing an air pollution “pandemic”. million premature deaths a year in 2015. years (530,000 deaths).

Pollution 438
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Carnegie study finds climate impact of particulates varies greatly depending on where the pollution originated

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However, aerosols have a much shorter lifespan in the atmosphere than the gases responsible for global warming, resulting in an atmospheric distribution that varies by region, especially in comparison to carbon dioxide. For example, aerosols from India cool their country of origin 20 times more than they cool the planet.

Climate 170
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Study measures the effect of regional change in clouds caused by ships’ emissions; masking GHG warming

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New research led by the University of Washington (UW) is the first to measure this phenomenon’s effect over years and at a regional scale. The new study uses observations from 2003 to 2015 in spring, the cloudiest season, over the shipping route between Europe and South Africa. Michael Diamond/University of Washington.

Emissions 223
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Study finds some improved cookstoves may emit more black carbon pollution than traditional mud cookstoves

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The first real-world, head-to-head comparison of improved cookstoves (ICs) and traditional mud stoves has found that some ICs may at times emit more of the black carbon particles that are linked to serious health and environmental concerns than traditional mud stoves or open-cook fires.

Pollution 231
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HEI: 95%+ of world’s population live in areas of unhealthy air

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Comparison of 2016 annual average PM 2.5 Most live in low- and middle-income countries in Asia and Africa, and face a double burden: exposure to both indoor and outdoor air pollution. concentrations to the WHO Air Quality Guideline. State of Global Air 2018. Worldwide exposure to PM 2.5 contributed to 4.1 In 2016 a total of 2.5

Pollution 218
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Hadley Centre: Average 4 C Warming Could Happen Within a Human Lifetime, With Even Greater Warming in Many Regions

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Comparison of surface temperature projections from the high-end emissions scenario, without carbon cycle feedbacks. Dr Richard Betts, Head of Climate Impacts at the UK Met Office Hadley Centre, presented the findings at a special conference called “ 4 degrees and beyond ” at Oxford University. Source: Met Office. Click to enlarge.

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New inventory of black carbon emissions from China finds 2007 levels higher than previously reported

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The paper by researchers from Peking University and Environment Canada appears in the ACS journal Environmental Science & Technology. Comparison of relative contributions from various sources to total BC emissions between China and other countries/regions including India, North America, and Africa. Credit: ACS, Wang et al.

2007 271