FEB 01, 2020 2:38 PM PST

Cut the ozone, help the plants

Researchers from the University of Exeter report in Nature Climate Change their findings of a new "natural climate solution”: reducing emissions of ozone-forming gases. Their idea is formed on the basis that ozone limits plants’ photosynthetic abilities; therefore, cutting ozone-producing gases could greatly increase photosynthesis globally and significantly increase carbon capture.

Professor Nadine Unger, of the University of Exeter, elaborates: "Ecosystems on land currently slow global warming by storing about 30% of our carbon dioxide emissions every year. This carbon capture is being undermined by ozone pollution. Our findings suggest the largest losses of plant productivity are in the eastern United States, Europe, and eastern China, which all have high levels of surface ozone pollution. The impact on plant growth in these areas is estimated to be 5-20% annually."

Professor Unger and colleagues suggest that a 50% reduction in emissions of nitrogen oxides, carbon monoxide, volatile organic compounds, and methane (all of which combine to form ozone in the atmosphere) could have huge implications for plants. But where exactly should we focus on that reduction?

According to the study, there are seven areas of human-made sources that account for the highest levels of emissions: are agriculture, residential, energy, industry, road transportation, waste/landfill and shipping. Road transport is the largest emitter, so the study targets this industry as a good starting place. Already, some progress has been achieved, the authors state.

"Deep cuts in air pollutant emissions from road transportation and the energy sector are the most effective mitigation measures for ozone-induced loss of plant productivity in eastern China, the eastern United States, Europe and globally," said Professor Unger.

The biggest emitter of ozone emissions comes from the transportation sector. Photo: Pixabay

While the authors admit that a 50% reduction is ambitious, they say that it is possible. "Our results suggest mitigation of ozone vegetation damage is a unique opportunity to contribute to negative carbon emissions, offering a natural climate solution that links fossil fuel emission abatement, air quality and climate. However, achieving these benefits requires ambitious mitigation efforts in multiple sectors."

Sources: Nature Climate Change, Science Daily

About the Author
  • Kathryn is a curious world-traveller interested in the intersection between nature, culture, history, and people. She has worked for environmental education non-profits and is a Spanish/English interpreter.
You May Also Like
AUG 01, 2021
Earth & The Environment
Shrinking Krill Population Threatens Antarctic Ecosystem
AUG 01, 2021
Shrinking Krill Population Threatens Antarctic Ecosystem
Large-scale climate patterns have a direct impact on the reproductive success of female Antarctic krill, which in turn h ...
AUG 22, 2021
Earth & The Environment
Fire Season in the Far North? The Wildfires of Siberia
AUG 22, 2021
Fire Season in the Far North? The Wildfires of Siberia
Fires have spread across over 10 million acres in Siberia
AUG 31, 2021
Genetics & Genomics
A Method to Detect Genetically Modified Animals in the Environment
AUG 31, 2021
A Method to Detect Genetically Modified Animals in the Environment
Genetically modified mice, fruit flies, and zebrafish are commonly used in research. Scientists have now developed a met ...
SEP 17, 2021
Earth & The Environment
City Solutions - Green Rooftops in Urban Spaces
SEP 17, 2021
City Solutions - Green Rooftops in Urban Spaces
Most of the world’s population lives in cities. Population growth is expected to continue to be focused in urban a ...
OCT 02, 2021
Genetics & Genomics
After Mass Extinction, All Modern Snakes Evolved From Only a Few Survivors
OCT 02, 2021
After Mass Extinction, All Modern Snakes Evolved From Only a Few Survivors
Reporting in Nature Communications, scientists have suggested that every living snake on earth evolved from just a handf ...
OCT 06, 2021
Earth & The Environment
The Future is Fungi!
OCT 06, 2021
The Future is Fungi!
With more people looking to reduce the amount of meat they consume, vegetable substitutes for meat are on the rise. Thou ...
Loading Comments...