Climate change will worsen ozone pollution

Warmer temperatures and higher atmospheric levels of methane could increase summertime ozone levels in the United States by 70 per cent in 2050, according to a new study. Ground-level ozone can trigger health problems such as asthma, bronchitis, and emphysema. Even short periods of unhealthy ozone levels can cause local death rates to rise. Ozone pollution also damages crops and other plants.

“It doesn’t matter where you are in the United States – climate change has the potential to make your air worse,” said Gabriele Pfister, lead author of the study. “A warming planet doesn’t just mean rising temperatures, it also means risking more summertime pollution and the health impacts that come with it.”

On the other hand, it was also found that sharp reductions in emissions of the ozone precursor pollutants, nitrogen oxides and volatile organic compounds, could reduce ozone levels even as the climate warms.

Two scenarios were examined. In one, emissions of nitrogen oxides and volatile organic compounds from human activities would continue at current levels through 2050. In the other, emissions would be cut by 60–70 per cent. Both scenarios assumed continued greenhouse gas emissions with significant warming.

Source: UCAR new release, 5 May 2014.

The study Projections of future summertime ozone over the U.S. is published online in the Journal of Geophysical Research-Atmospheres.

In this issue

150 ways to cut GHG emissions

NGOs from eleven countries in Northern Europe have evaluated national policies used to cut greenhouse gases. Result: some 150 measures. If all repeated some of the lessons learned by their neighbours, emissions would come down fast.

Editorial: 1.5°C target can be reached

In April 2014, the UN Intergovernmental Panel on Climate Change (IPCC) issued a report that presented a scenario for a pathway on how to limit temperature rise to 1.5°C ..

Profitable to cut air pollution

The monetised health benefits alone of less air pollution are up to 42 times greater than the emission abatement costs. In addition there will be substantial benefits to ecosystems, forests, agricultural crops and materials.

IMO weakens NOx rules for ships

A hastily adopted compromise decision that was taken without any impact assessment, despite the risk that it will negatively affect the environment and the health of Europeans.

A changing climate creates pervasive risks

The effects of climate change are already being seen on all continents and across the oceans.

Persistent problems in meeting NOx limits

Eleven EU countries breached at least one of their air pollutant emission ceilings in 2012, preliminary data from the European Environment Agency shows.

Hidden costs make coal expensive

Unexpected costs and technical disappointments have been recurrent while building the Moorburg power station – a project that is part of a 6 GW coal power expansion in Germany.

Diet shifts could reduce nitrogen pollution

Halving the consumption of meat, dairy and eggs in Europe could reduce ammonia and other nitrogen emissions by 40 per cent.

Rise in agricultural emissions

Aggregated greenhouse gas emissions from agriculture increased by 14 per cent between 2001 and 2011, according to new data from the FAO.

SCR can cut ship NOx emissions

The technology to drastically cut ship NOx emissions is widely available, performs well, and may even slightly reduce ship fuel consumption. The costs of installation and operation are modest and expected to fall over time.

Air pollution the world’s largest environmental health risk

New figures from the WHO link indoor and outdoor air pollution to around 7 million premature deaths a year – more than double previous estimates.

Urban air quality getting worse

About half of the urban population being monitored worldwide is exposed to air pollution that is at least 2.5 times higher than the levels recommended by the WHO.

Harmful ozone levels over Europe

Ozone pollution significantly exceeded EU standards to protect health during the summer of 2013, especially in the Mediterranean and Alpine regions.

Diesel cars not as green as perceived

In Europe, diesel cars have been promoted based on the assumption that they emit less greenhouse gases (GHG) than petrol-fuelled cars and many EU member states have reduced taxes on diesel fuel and diesel car sales.

Europe’s biggest polluters

Twelve of Europe’s most polluting point sources in 2012 were found in two countries: Germany and the UK.

Main menu

Climate change will worsen ozone pollution

In this issue

150 ways to cut GHG emissions

Editorial: 1.5°C target can be reached

Profitable to cut air pollution

IMO weakens NOx rules for ships

A changing climate creates pervasive risks

Persistent problems in meeting NOx limits

Hidden costs make coal expensive

Diet shifts could reduce nitrogen pollution

Rise in agricultural emissions

SCR can cut ship NOx emissions

Air pollution the world’s largest environmental health risk

Urban air quality getting worse

Harmful ozone levels over Europe

Diesel cars not as green as perceived

Europe’s biggest polluters

Publications

SINK OR SOURCE? Northern Forests at a crossroads

The role of northern forests in limiting warming to 1.5°C

Protecting Northern Forests crucial for biodiversity, the climate and indigenous rights

The 100 largest industry emitters in EU-27

Road to Nowhere

Bioenergy CCS – too little, too expensive, and not net negative

Direct air carbon capture and storage - A waste of time and energy

Carbon emissions from the cement industry can be reduced without CCS

What we do

Air pollution

Climate Change

Policy initiatives

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