International study finds air pollution leads to millions of hospital visits for asthma attacks worldwide

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They used epidemiological health impact functions combined with data describing population, baseline asthma incidence and prevalence, and pollutant concentrations. This is the first global study of the potential impacts of air pollution on serious asthma attacks that cause people to visit emergency rooms in hospitals around the world. The research team said that one way to reduce pollutants quickly would be to target emissions from cars, especially in big cities.

2018 74

Study finds power law scaling relationship between urban population and NO2 pollution

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The approximate linear relationship for each region is notable, suggesting that the dependence of urban NO 2 pollution upon population follows a power law scaling with population. The same regions saw various degrees of pollution increases in cities with population of 10 million people: 2.55

2013 116

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UMD-led study finds China’s SO2 emissions down 75% since 2007, India’s up 50%; India may now be the top SO2 emitter

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Sulfur dioxide is an air pollutant that causes acid rain, haze and many health-related problems. Starting in the early 2000s, China began implementing policies such as fining polluters, setting emission reduction goals and lowering emissions limits.

India 85

NASA satellite images highlight US air quality improvement with reduction of NO2

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New NASA satellite images released this week demonstrate the reduction of air pollution across the US. After ten years in orbit, the Ozone Monitoring Instrument (OMI) on NASA’s Aura satellite has been in orbit sufficiently long to show that people in major US cities are breathing less nitrogen dioxide. Nitrogen dioxide is one of the six common pollutants regulated by the US Environmental Protection Agency (EPA) to protect human health.

2014 75

Satellite method provides insight into ozone-NOx-VOCs sensitivity for different locations

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Ozone pollution near Earth’s surface is one of the main ingredients of summertime smog. Determining effective strategies for mitigating surface ozone (O 3 ) pollution requires knowledge of the relative ambient concentrations of its precursors, NO x , and VOCs.

2017 78

DISCOVER-AQ project to begin flights to enhance measurement of ground-level air-quality from space

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The flights will be supported by the US Environmental Protection Agency (EPA) and will aid EPA in monitoring pollutants. The project—Deriving Information on Surface conditions from Column and Vertically Resolved Observations Relevant to Air Quality ( DISCOVER-AQ )—will help researchers develop a three-dimensional view of how air pollutants are distributed and move between different levels of the atmosphere throughout the day. Measuring pollution from space.

2011 69