Additional ozone-depleting compounds in the atmosphere
Nature Geoscience
2014년3월10일
Four newly detected ozone-depleting substances started to emerge in the atmosphere in the 1960s, reports a study published online in Nature Geoscience. Although emissions of these compounds have been small, they are contrary to the intentions behind the Montreal Protocol, an international treaty designed to phase out emissions of ozone-depleting substances.
Johannes Laube and colleagues examined the composition of air samples collected from Tasmania and extracted from deep compacted snow in Greenland. They identify three new chlorofluorocarbon compounds, and one new hydrochlorofluorocarbon compound - man-made substances once common in various household appliances, that destroy ozone in the upper atmosphere - in the air samples. The authors show that all four compounds started to appear in the atmosphere in the 1960s, and that, since then, two of these compounds have continued to increase in concentration in the atmosphere.
doi: 10.1038/ngeo2109
리서치 하이라이트
-
8월9일
Ecology: Climate change can aggravate over half of known human pathogensNature Climate Change
-
8월4일
Environment: Extreme flooding and drought make risk management difficultNature
-
8월3일
Environment: Salt may inhibit lightning in sea stormsNature Communications
-
7월29일
Environment: Costs of amphibian and reptile invasions exceeded US$ 17 billion between 1986 and 2020Scientific Reports
-
7월27일
Environment: Plastic pollution encourages bacterial growth in lakesNature Communications
-
7월27일
Ecology: Using fallow land to grow vanilla increases biodiversityNature Communications