Recent Megafire Smoke Columns Have Reached the Stratosphere, Threatening Earth’s Ozone Shield

Inside Climate News

New research warns that wildfire emissions could unravel progress made under the Montreal Protocol to shrink atmospheric ozone holes. Science Australia Climate Change Ozone smoke stratosphere

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New Climate Research From a Year-Long Arctic Expedition Raises an Ozone Alarm in the High North

Inside Climate News

Science Climate Change mosaic Ozone researchWarming of the surface of the Arctic is matched by a colder polar vortex high in the atmosphere, which is speeding the breakdown of the Earth’s shield against ultraviolet rays.

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Ozone Pollution: An Insidious and Growing Threat to Biodiversity

Yale E360

Ground-level ozone has long been known to pose a threat to human health. Now, scientists are increasingly understanding how this pollutant damages plants and trees, setting off a cascade of impacts that harms everything from soil microbes, to insects, to wildlife. Read more on E360

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What Exactly is Ozone? The Good, the Bad & the Ugly


Our ozone layer serves as a lifesaving UV barrier for planet earth, functioning to absorb most of the sun’s ultraviolet radiation. At the same time, ground-level ozone pollution is extremely harmful to human health. Good Ozone’: Our Essential Sun Shield. How is Ozone Created?

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Smoke from Australian Wildfires Thinned Ozone Layer, Study Finds

Yale E360

Smoke from bushfires that spread across Australia in late 2019 and early 2020 destroyed high-altitude ozone in the Southern Hemisphere, according to a study that offers new insight into the threat posed by wildfires.

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Improving EPA’s Latest Ozone Transport Rule


The proposed Federal Implementation Plan Addressing Regional Ozone Transport for the 2015 Ozone National Ambient Air Quality Standard (87 FR 20036, April 6, 2022) seeks to impose across-the-board retrofit technology requirements by 2026 for coal- and gas-fired units larger than 100 megawatts that are not equipped with Selective Catalytic Reduction (SCR) technology. The agency’s air quality modeling indicates that most areas would receive an ozone reduction of less than 0.1

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Oceans may start emitting ozone-depleting CFCs

Successful Green

The world’s oceans are a vast repository... The post Oceans may start emitting ozone-depleting CFCs appeared first on successful GREEN.

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New Study Finds Climate Change Exacerbates Neighborhood Smog

Union of Concerned Scientists

Climate Change Clean Air Act fossil fuel companies ozone SmogThis groundbreaking report is important for three main reasons: impact, scale, and attribution.

The ozone layer was damaged by Australia’s Black Summer megafires

New Scientist

Ozone levels above the mid-southern hemisphere dropped 13 per cent after Australia’s worst fires on record due to chemical reactions triggered by the smoke

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Ozone exposure may be linked to depression in adolescents, study finds

Environmental News Bits

Exposure to ozone from air pollution may be connected to a rise in depression among adolescents, a new study has found. The study, published in the journal Developmental Psychology on Monday, is the first to link ozone levels to the development of depression in adolescents over time. Read the full story at The Hill. Air quality Environmental health Publications

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One of the longest-lived ozone holes on record is about to close

New Scientist

This year has been characterised by cold and strong polar vortices, resulting in strong ozone depletion and a reminder of how much the ozone hole can vary annually as it heals

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Ozone layer treaty will slow climate change by protecting plants

New Scientist

The international treaty to protect the ozone layer has had the inadvertent benefit of protecting plants and avoiding up to 1°C of future climate change this century, almost as much as the world has warmed to date

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Ozone pollution causes $63 billion damage per year to East Asian crops

New Scientist

Rising levels of ground-level ozone in China and nearby countries are having a big effect on the yields of staple crops such as wheat, rice and maize

The ozone hole over the South Pole is now bigger than Antarctica

New Scientist

Each year between August and October, the ozone over the South Pole is depleted – this year the hole is larger than 75 per cent of the holes that had formed by this point in the season since 1979

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Landmark Ozone Treaty Could Prevent More Than 400 Million Cases of Cancer

Scientific American

The Montreal Protocol has helped heal the ozone layer that blocks harmful ultraviolet rays. -- Read more on Environment Pollution Public Health

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Lower-income ZIP code residents feel worse effects of extreme heat, ozone pollution: study

Environmental News Bits

The combined health effects of ozone pollution and extreme heat disproportionately hurt poorer areas, according to a new study analyzing hospitalizations by ZIP code in California. Read the full story at Smart Cities Dive. Wealthier ZIP codes and populations with better access to healthcare, lower stress levels and reduced car traffic faced were less vulnerable to negative impacts… Read more → Environmental health Environmental justice Publications

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Ozone Hole Would Have Killed Plants and Raised Global Temperatures

Scientific American

Without the Montreal Protocol, more solar radiation would have destroyed plants, lessening the CO2 they absorb. -- Read more on Environment Climate Change Ecology

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How climate change may impact ozone pollution and public health through the 21st century

Environmental News Bits

Read the full story from U.S. Climate researchers are learning that warming temperatures and heat waves resulting from greenhouse gas (GHG) emissions could adversely affect air quality in the United States and increase deaths from air pollution exposure. This effect is referred to as the “climate penalty.” Higher levels of GHG emissions from vehicles,… Read more → Climate change Environmental health

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Air Quality as Environmental Justice

Legal Planet

The SIPS cover all sources of pollution – everything from smoky diesel trucks to coal-fired power plants to use of ozone-causing chemicals. Air Quality Biden Administration Environmental Justice Public Health air pollution Clean Air Act environmental justice NAAQS ozone PM2.5

Cleaning products cause indoor pollution levels similar to a busy road

New Scientist

Fragrant chemicals in scented surface cleaners react with ozone to produce pollutant particles that may be harmful to the respiratory system

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Celebrating Ozone Layer Protection Milestones of the Clean Air Act


Ozone layer protection in the United States reaches an important milestone in 2020. Environmental Protection Agency (EPA) has been helping to protect and heal the Earth’s stratospheric ozone layer by phasing out ozone-depleting substances (ODS). By Anne L. Austin.

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Montreal Protocol Averted an Additional 2.5 Degrees C of Warming, Study Says

Yale E360

The Montreal Protocol, which phased out the use of ozone-depleting chemicals, not only saved the ozone layer, but also staved off an additional 2.5

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New, Stronger Rules for Truck Pollution Still Would Not Meet Air Quality Goals

Scientific American

Heavy-duty trucks are the largest mobile source of a key precursor to dangerous ozone and particulate matter. -- Read more on

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Extreme air pollution from US wildfires now affects millions of people

New Scientist

The simultaneous occurence of extreme levels of ozone and particulate matter have increased significantly in the past decade due to wildfires in the western US

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Don't Fear China's Falling Rocket--Fear the Future It Foretells

Scientific American

Long considered trivial, the effects of rocket launches and reentering space debris on global warming and ozone loss could soon become too large to ignore. Space & Physics Space Exploration

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Tonga eruption caused irreversible damage to the atmosphere


Scientists are now saying that the enormous January explosion of an underwater volcano in Tonga may have really messed up Earth’s ozone layer It only takes one uncooperative volcano to ruin all our plans to save the planet, no matter how many of us go vegan, compost our food waste and buy electric cars.

Wildfires Are Fueling a Toxic Combo of Air Pollutants

Scientific American

population to a stew of particulate matter and ozone. -- Read more on The 2020 fire season subjected half the western U.S. Environment Climate Change Pollution

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Climate Change Threatens Already Poor Air Quality in California’s Central Valley

Union of Concerned Scientists

Bakersfield, Fresno, and Visalia are consistently ranked as cities with the worst particulate and ozone pollution , according to the American Lung Association. and ozone concentrations highlighting air quality issues in the Central Valley.

Huge gaps in detection networks plague emissions monitoring

Environmental News Bits

Plug gaps to measure ozone-destroying chemicals and greenhouse gases and verify compliance with Paris and Montreal treaties. Read the full story at Nature. Read more → Air quality Climate change Regulation

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Air pollution makes it harder for pollinators to find plants

New Scientist

Levels of nitrogen oxides and ozone on a par with average concentrations next to major UK roads led to a reduction in the number of pollinators counted on the crops by up to 70 per cent

What the EPA's New Plans for Regulating Power Plants Mean for Carbon

Scientific American

Administrator Michael Regan argues regulation of mercury, ozone, water and coal ash will also curb greenhouse gases. -- Read more on Environment Fossil Fuels Pollution

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Pollution Control as Climate Policy

Legal Planet

The Biden Administration is slowly grinding away at an important regulatory task: reconsidering the air quality standards for particulates and ozone. The Administration has also announced that it intends to reconsider the ozone standards.

Space Tourism Poses a Significant ‘Risk to the Climate’

Inside Climate News

By Phil McKenna The burgeoning space tourism industry could soon fuel significant global warming while also depleting the protective ozone layer that is crucial for sustaining life on Earth, a new study concludes.

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Air pollution significantly reduces pollination by confusing butterflies and bees

Environmental News Bits

A new study finds pollination reduced by almost a third when diesel fumes and ozone were present – the negative impact of these common air pollutants on pollination were observed in the natural environment. Read the full story from the University of Reading. Read more → Air quality Pollinators Publications

Air Pollution & Climate Change: Global Phenomena, Individual Consequences


In the presence of heat and sunlight, chemical emissions from cars and factories react to form ozone (learn more here )., As average temperatures rise, ozone levels accelerate.

Congress Considers First-Ever Purchase Incentive for Commercial EVs

Union of Concerned Scientists

Policies like C a lifornia’s Advanced Clean Trucks rule , which requires manufacturers to produce an increasing percentage of electric trucks, and strong federal limits on ozone-forming emissions of nitrogen oxides are both key.

The elimination of leaded gasoline in Japan

Environment, Law, and History

Among other things, it demonstrates that environmental regulation is often driven politically by pressure from businesses that stand to profit from the regulation, a phenomenon we have also seen, for instance, in the history of the Montreal Protocol on ozone-depleting substances.

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Summer Air Pollution Trends: Factors Affecting Air Quality


Levels of Ground-level Ozone Pollution Can Increase in Summer. As ground-level ozone requires the presence of sunlight to form, high heat and sunny weather can function to increase concentrations of this particular pollutant.

How Does The U.S EPA Report on Air Quality ?


Ground-level ozone (03) Particle pollution (PM2.5 Ground-level ozone (03) Particle pollution (PM 2.5) E.g. The ozone AQI has an 8-hour exposure index & a 1-hour index, while the calculation of P M 2.5

Quantum material ‘learns’ like a living creature

Physics World

When they monitored how the material’s electrical conductivity changes as the concentration of its atomic defects is reversibly modulated using external stimuli such as oxygen, ozone and light, they found that it mimics non-associative learning.

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Public Comment Period Opens as Ohio EPA Issues Draft Revisions to Reasonably Available Control Technology (“RACT”) Requirements for Control of VOC and NOx Emissions

Vorys Law

Ohio EPA has proposed rules that will require additional Volatile Organic Compound (VOC) and Nitrogen Oxide (NOx) emission controls for certain manufacturing and industrial operations located in the Cincinnati and Cleveland 2015 ozone nonattainment areas. The Cincinnati ozone nonattainment area includes facilities located in Butler, Clermont, Hamilton, and Warren Counties. Like VOCs, NOx is a precursor compound which can form ozone.

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DEP Invites Comments On Proposed Regional OTC Nitrogen Oxide Standards For Waste Combustors

PA Environment Daily

The Department of Environmental Protection published notice in the May 14 PA Bulletin inviting comments on nitrogen oxide emission reduction measures from municipal waste combustors proposed by the Northeast Ozone Transport Commission. The Ozone Transport Commission is due to consider the proposed control measures at its annual meetings on June 1 and 2.

Honorable Mentions in EPA’s Cleaner Indoor Air During Wildfires Challenge Include Concept Using Nanomaterial Coating


EPA states that Metalmark indicates that its initial testing in a small chamber using cigarette smoke resulted in “steep reductions in PM concentrations within 20 minutes, without the creation of byproducts such as ozone or volatile organic compounds.” On October 26, 2021, the U.S.

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