Nitrous dioxide, popularly known as 'laughing gas', has now become the largest ozone-depleting substance emitted through human activities, says a new study.
Nitrous dioxide, popularly known as 'laughing gas', has now become the largest ozone-depleting substance emitted through human activities, says a new study.
The study was authored by A.R. Ravishankara, J.S. Daniel and Robert W. Portmann of the NOAA Earth System Research Laboratory (ESRL) chemical sciences division.
Health Effects of Global Warming
Greenhouse effect causes excessive heat to build up in the earth’s atmosphere causing global warming and affects the environment and health.
Greenhouse effect causes excessive heat to build up in the earth’s atmosphere causing global warming and affects the environment and health.
As chlorofluorocarbons (CFCs), which have been phased out by international agreement, ebb in the atmosphere, nitrous oxide will remain a significant ozone-destroyer, the study found.
Today, nitrous oxide emissions from human activities are more than twice as high as the next leading ozone-depleting gas.
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In a new study, scientists at University of California Irvine (UCI) have discovered a previously unknown chemical reaction that could account for up to 40 parts per billion of ozone.
In a new study, scientists at University of California Irvine (UCI) have discovered a previously unknown chemical reaction that could account for up to 40 parts per billion of ozone.
Calculating the effect on the ozone layer now and in the future, NOAA researchers found that emissions of nitrous oxide from human activities erode the ozone layer and will continue to do so for many decades.
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Southern Ocean's Carbon Sink Diminishing Due to Ozone Hole
In a new research, scientists have found that the ozone hole is responsible for the drop in carbon dioxide (CO2) absorption in the Southern Ocean, which is considered as a major carbon sink.
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NOAA scientists also conduct fundamental studies of the atmosphere and atmospheric processes to improve understanding of ozone depletion and of the potential for recovery the ozone layer.
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Global Food Crisis Attributed to Rising Ozone Levels
A new research has indicated that rising levels of ozone in the atmosphere are a likely contributor to the global food crisis.
A new research has indicated that rising levels of ozone in the atmosphere are a likely contributor to the global food crisis.
The ozone layer serves to shield plants, animals and people from excessive ultraviolet light from the sun.
Thinning of the ozone layer allows more ultraviolet light to reach the Earth's surface where it can damage crops and aquatic life and harm human health.
Though the role of nitrous oxide in ozone depletion has been known for several decades, the new study is the first to explicitly calculate that role using the same measures that have been applied to CFCs, halons and other chlorine- and bromine-containing ozone-depleting substances.
According to scientists, nitrous oxide is also a greenhouse gas, so reducing its emission from manmade sources would be good for both the ozone layer and climate.
Source-ANI
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