Ozone Holes News
July 29, 2015

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More Ozone Holes News
July 29, 2015

Stricter Limits for Ozone Pollution Would Boost Need for Science, Measurements

June 4, 2015 — A tougher federal standard for ozone pollution, under consideration to improve public health, would ramp up the importance of scientific measurements and models, according to a new ... read more

May 12, 2015 — A strong connection between high ozone days in the western US during late spring and La Nina, an ocean-atmosphere phenomena that affects global weather patterns, has been identified by researchers. ... read more

Future Air Quality Could Put Plants, People at Risk

Nov. 6, 2014 — Future ozone levels could be high enough to cause serious damage to plants and crops, even if emissions of greenhouse gases are reduced, says new research. And without sufficient reductions in ... read more

Nov. 5, 2014 — There will be notable increases in grass pollen production and allergen exposure up to 202 percent in the next 100 years, leading to a significant, worldwide impact on human health due to predicted ... read more

Increase in Ozone-Destroying Substances, but Montreal Protocol on Track

Nov. 5, 2014 — Scientists have shown a recent increase in atmospheric hydrogen chloride, a substance linked to destruction of the ozone ... read more

Oct. 30, 2014 — The Antarctic ozone hole reached its annual peak size on Sept. 11, according to scientists. The size of this year's hole was 24.1 million square kilometers (9.3 million square miles) -- an area ... read more

Clean Smell Doesn't Always Mean Clean Air

Oct. 29, 2014 — Scientists are taking a closer look at aerosol formation involving an organic compound -- called limonene -- that provides the pleasant smell of cleaning products and air fresheners. This research ... read more

Oct. 14, 2014 — The increase in greenhouse gases explains, to a large extent, the rise in the average temperature of the Earth. According to a new research study, the Sun affects middle atmosphere ozone with ... read more

High-Pollution Days Linked to Increased Risk of Cardiac Arrest

Oct. 7, 2014 — Rates of out-of-hospital cardiac arrest are elevated after days with high levels of air pollutants, reports a Japanese study. For example, 48 to 72 hours after days with high levels of particulate ... read more

Atmospheric Chemistry Hinges on Better Physics Model

Oct. 6, 2014 — Theoretical physics models could help us better grasp the atmospheric chemistry of ozone depletion. Indeed, understanding photoabsorption of nitrous oxide -- a process which involves the transfer of ... read more

Wintertime Ozone Pollution in Utah Oil and Gas Fields Explained

Oct. 1, 2014 — Chemicals released into the air by oil and gas exploration, extraction and related activities can spark reactions that lead to high levels of ozone in wintertime, high enough to exceed federal health ... read more

Sep. 26, 2014 — A rapid atmospheric reaction critical to breaking down pollution in the lab has been observed by chemists. They identify an important intermediate molecule and track its transformation to hydroxyl ... read more

Actions on Climate Change Bring Better Health, Study Says

Sep. 22, 2014 — The number of extremely hot days in Eastern and Midwestern U.S. cities is projected to triple by mid-century, according to a new study. In presenting their synthesis, the study authors seek to ... read more

Fracking's Environmental Impacts Scrutinized

Sep. 21, 2014 — Greenhouse gas emissions from the production and use of shale gas would be comparable to conventional natural gas, but the controversial energy source actually fared better than renewables on some ... read more

Sep. 10, 2014 — How much does bromine affect stratospheric ozone? Answering this question is the primary objective of measurements by a multi-instrument gondola carried by a high-altitude balloon. The balloon flight ... read more

Sep. 8, 2014 — The conversion of forests into cropland worldwide has triggered an atmospheric change to emissions of biogenic volatile organic compounds that -- while seldom considered in climate models -- has had ... read more

Ozone Pollution in India Kills Enough Crops to Feed 94 Million in Poverty

Sep. 4, 2014 — In one year, India's ozone pollution damaged millions of tons of the country's major crops, causing losses of more than a billion dollars and destroying enough food to feed tens of millions ... read more

Greenhouse Gases: New Group of Soil Micro-Organisms Can Contribute to Their Elimination

Aug. 27, 2014 — The ability of soils to eliminate N2O can mainly be explained by the diversity and abundance of a new group of micro-organisms that are capable of transforming it into atmospheric nitrogen ... read more

Despite Significant Reduction in Smog-Producing Toxins, the Greater Toronto Area Still Violates Canada's Standards for Ozone Air Pollution

Aug. 22, 2014 — While the Greater Toronto Area has significantly reduced some of the toxins that contribute to smog, the city continues to violate the Canada-wide standards for ozone air pollution, a study shows. ... read more

Aug. 20, 2014 — NASA research shows Earth's atmosphere contains an unexpectedly large amount of an ozone-depleting compound from an unknown source decades after the compound was banned ... read more

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