Tag: ozone

Colorado just can’t get a grip on its smog problem

State  fails to meet EPA standard set to protect public health; ozone problems to worsen with global warming

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State regulators have left children, the elderly and asthmatics vulnerable to potentially deadly levels of ozone. Photo courtesy NREL.

By Bob Berwyn

The modest steps taken by Colorado to try and improve air quality along the Front Range aren’t enough, according to the EPA. This week, the federal agency said the state has failed to meet air quality standards set to protect public health.

In a Federal Register Notice, the EPA designated the Denver-Boulder-Greeley-Fort Collins-Loveland corridor as a nonattainment area because it didn’t meet the federal limits for ground-level ozone, the key ingredient of smog. Under the Clean Air Act, the state was required to bring the Front Range into compliance with smog limits by July of 2015.  Colorado failed to meet this deadline. Continue reading “Colorado just can’t get a grip on its smog problem”

Global warming will lead to spike in ozone pollution

Western U.S. Counties Violating Current and Proposed Ozone Air Quality Standards.
Western U.S. Counties Violating Current and Proposed Ozone Air Quality Standards. A new study suggests even more spikes in dangerous ozone levels as global temperatures increase. Map courtesy WildEarth Guardians.

New study tracks dangerous public health threat posed by rising temps

Staff Report

Along with catastrophic heatwaves, flooding and droughts, greenhouse gas emissions are likely to result in a big spike in the number of days when air quality is impaired by ozone, according to a new study from the Harvard John A. Paulson School of Engineering and Applied Sciences.

Left unchecked, global warming could lead to between three and nine additional days per year of unhealthy ozone levels by 2050, the researchers found.

“In the coming decades, global climate change will likely cause more heat waves during the summer, which in turn could cause a 70 to 100 percent increase in ozone episodes, depending on the region,” said Lu Shen, first author and graduate student at SEAS. Continue reading “Global warming will lead to spike in ozone pollution”

Environment: EPA faces ozone lawsuit

Toxic haze kills millions worldwide

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Toxic air pollution kills millions of people each year. Photo courtesy National Renewable Energy Laboratory.

Staff Report

There’s little question that air pollution is one of the biggest killers on the planet. Some recent estimates place the number of global deaths attributed to airborne toxins anywhere between 3.3 to 7 million per year, and that number is expected to go up by 15 to 20 percent in the next few decades.

And while countries with developing economies like China and India have the biggest problems, the U.S. is not immune from poisonous pollutants, especially invisible ozone. In some parts of the country, ozone pollution is getting worse, not better. The EPA has tried to tackle ozone pollution by setting new standards, but faced resistance from industrial polluters.

As a result, watchdog groups say the agency has fallen short, and the Center for Biological Diversity says it will sue the EPA because 17 states and the District of Columbia have failed to reduce ozone pollution, which poses serious threats to public health, wildlife and ecosystems. Essentially, environmental activists say the EPA has failed to meet standards set under the Clean Air Act. Continue reading “Environment: EPA faces ozone lawsuit”

Distant wildfire smoke may raise ozone levels

Summer 2012 wildfires Colorado
Wildfire smoke may interact with other pollutants to raise ozone levels. @bobberwyn photo.

Across the U.S., ozone levels were higher on smoky days than on smoke-free days

Staff Report

Wildfire smoke on its own can trigger health warnings for direct exposure, and new research from Colorado State University suggests that there may be a more widespread impact after they linked smoke with elevated levels of ozone.

In globally warming world, where the number and size of wildfires keeps growing, the findings have significant implications for public health. Continue reading “Distant wildfire smoke may raise ozone levels”

EPA sets new ozone standard but faces challenges

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Got smog? EPA wants to cut ozone, but will face a challenge on new standard.

Environmentalists say new rule is to weak; industry asks Congress to step into the fray

Staff Report

The EPA’s new smog-fighting ozone standard is likely headed down the same path as the agency’s other recent initiatives to improve the environment.

Like the recently updated wetlands rule and the Clean Power Plan, the new ozone limit was immediately criticized from all sides. Environmental advocates said the agency ignored its own experts when it set the new limit at 70 parts per billion. Industry claims the new rule will cut profits and cost jobs. Continue reading “EPA sets new ozone standard but faces challenges”

Environment: Proposed new ozone standards seen as challenge for regulators

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A snapshot of ozone conditions in early June 2015.

Scientists say more monitoring will be crucial for regulators

Staff Report

FRISCO — Proposed new standards for harmful ozone pollution could present a big challenge for air quality managers at the state and local level. More monitoring is needed to help tell apart local sources from ozone that’s generated elsewhere, Boulder-based scientists wrote last week in Science.

Last November, the Environmental Protection Agency proposed lowering the primary ozone standard from 75 parts per billion (ppb) to 70 or 65 ppb, based on ozone’s known effects on children, the elderly, and people who have lung diseases such as asthma. A decision by the EPA Administrator is expected in October 2015. Continue reading “Environment: Proposed new ozone standards seen as challenge for regulators”

Climate: When good ozone goes bad

Western U.S. Counties Violating Current and Proposed Ozone Air Quality Standards.
Western U.S. counties violating current and proposed ozone air quality standards. Map courtesy Jeremy Nichols/ClimateWest blog.

La Niña weather pattern found to contribute to spikes in western ozone levels

Staff Report

FRISCO — Spring ozone formation in parts of the western U.S. appear to be linked with the hemispheric La Niña weather pattern, when the path of the jet stream forces high altitude ozone down to ground level.

After discovering the link, a team of researchers say their findings may help forecast harmful ozone episodes well in advance, which could have implications for attaining the national ozone standard. Continue reading “Climate: When good ozone goes bad”