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Report shows Nitrous oxide accelerating climate change, damaging ozone layer

by admineconai November 18, 2024
written by admineconai November 18, 2024
363

A new report titled ‘Global Nitrous Assessment’ has shown that nitrous oxide (N₂O), a potent greenhouse gas, is rapidly accelerating climate change and damaging the ozone layer.

Launched at the 2024 UN Climate Change Conference (COP29) in Baku, Azerbaijan by the United Nations Environment Programme (UNEP), the report showed that nitrous oxide was 270 times more potent than carbon dioxide (CO2) and accounts for about 10 percent of net global warming since the industrial revolution.

In the report, UNEP noted that the gas is primarily emitted from agricultural practices including synthetic fertilisers and manure, adding that N₂O is the third most significant greenhouse gas and the top ozone-depleting substance.

Among other things, the report said that by transforming global food production systems and rethinking societal approaches to nitrogen management, the world can cut down nitrous oxide emissions by 40 percent.

Read also: Top economists find poorer nations need $1tn a year by 2030 in climate finance

“Nitrogen oxide emissions lead to multiple changes in climate drivers in the troposphere, including increased tropospheric ozone, which causes warming, reductions in methane, due to increased formation of the oxidising hydroxyl radical, that causes cooling; and increases in both nitrate and secondary organic aerosols, which cause cooling,” the report reads.

“In response to changes in emissions, the aerosols, ozone and methane responses would be rapid whereas changes in nitrous oxide would take place slowly over a century.”

A.R. Ravishankara, an atmospheric scientist at the Colorado State University and co-chair of the assessment, said adequate nitrogen management will improve air and water quality in the ecosystem.

“A sustainable nitrogen management approach not only reduces nitrous oxide emissions but also prevents the release of other harmful nitrogen compounds,” Ravishankara said.

“This could improve air and water quality, protect ecosystems, and safeguard human health, all while maintaining food security.”

Story was adapted from the Guardian.

Climate changeNitrous oxideOzone layer
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