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70 Current news about the topic ozonerss
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Normally computers speed up calculations. But with his new pen-and-paper formula Kevin Heng of the University of Bern gets his results thousands of times faster than using conventional computer codes. The astrophysicist calculates the abundances of molecules (known as atmospheric chemistry) in ...
September ozone hole has shrunk by 4 million square kilometers since 2000
Scientists at MIT and elsewhere have identified the "first fingerprints of healing" of the Antarctic ozone layer. The team found that the September ozone hole has shrunk by more than 4 million square kilometers -- about half the area of the contiguous United States -- since 2000, when ozone ...
Some substitutes for ozone-damaging chemicals being phased out worldwide under international agreements are themselves potent greenhouse gases and contribute to warming. Now, a new study, shows for the first time how some of those replacement chemicals can break down in the atmosphere to form a ...
Air pollution could claim 6.6 million lives by 2050
Every year 3.3 million people die prematurely from the effects of air pollution worldwide - a figure that could double by 2050 if emissions continue to rise at the current rate. This is the conclusion of a study carried out by a team of researchers at the Max Planck Institute for Chemistry in ...
Ethanol fuel refineries could be releasing much larger amounts of some ozone-forming compounds into the atmosphere than current assessments suggest, according to a new study that found emissions of these chemicals at a major ethanol fuel refinery are many times higher than government ...
The surface of the sea takes up nitrogen oxides that build up in polluted air at night, new measurements on the coast of southern California have shown. The ocean removes about 15 percent of these chemicals overnight along the coast, a team of atmospheric chemists reports in the early online ...
High levels of natural gas are escaping from the aging pipes beneath the streets of the nation's capital, creating potentially harmful concentrations in some locations, a new study has found. Natural gas leaks pose explosion risks, health concerns and contribute to climate change. The paper, ...
Reaction replicates formation of first silicate dust; oxygen isotopes match mix seen in stony meteorites
Cosmochemists have solved a long standing mystery in the formation of the solar system: Oxygen, the most abundant element in Earth's crust, follows a strange, anomalous pattern in the oldest, most pristine rocks, one that must result from a different chemical process than the well-understood ...
New type of photodiode, described in the journal Applied Physics Letters, shows promise for space-based communication and monitoring ozone depletion
Researchers in Japan have developed a new photodiode that can detect in just milliseconds a certain type of high-energy ultraviolet light, called UVC, which is powerful enough to break the bonds of DNA and harm living creatures. The researchers describe their new device in the journal Applied ...
Juelich troposphere researchers demonstrate effective recycling of radicals during isoprene degradation
Hydroxyl (OH) radicals – known as the detergent of the atmosphere – decompose isoprene in the air. This leads to the creation of new OH radicals, which are then able to purify the air of other pollutants and trace gases. The scientific community had previously only been able to speculate about ...