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Ice Core Data Shows Why Air Pollution is Reducing Slower than Sulfur Emissions Reductions

Ice Core Data Shows Why Air Pollution is Reducing Slower than Sulfur Emissions Reductions
Written by AZoCleantechJun 1 2021
Ice core data obtained from Greenland indicates why air pollution has been decreasing slower compared to reductions in sulfur emissions.
The researchers in the drilling operation (left) and the drilled samples (right). Image Credit: Hokkaido University
When cloud droplets turn out to be less acidic, the chemical reaction that converts sulfur dioxide into sulfate aerosol becomes more effective. These findings can enhance the models that predict climate change and air quality.
In the United States and Western Europe, the air is much cleaner compared to how it was a decade ago. Low-sulfur gasoline standards and regulations on power plants have been successful in cutting sulfate concentrations in the air, thereby decreasing the fine particulate matter that tends to impact human health and cleaning up the environmental risk of acid rain. ....

United States , Shohei Hattori , Yoshinori Iizuka , Becky Alexander , Professor Of Atmospheric Sciences , Tokyo Institute Of Technology Tech , Tokyo Institute Of Technology , Institute Of Low Temperature Science , Hokkaido University , Program Grant Number , University Of Washington , Study Co , Japan Society For The Promotion Of Science , Japan Ministry Of Education , Image Credit , Western Europe , Tokyo Institute , Tokyo Tech , Science Advances , Study Co Author , Atmospheric Sciences , Study Lead Author , Dome Ice Core Project , Japan Ministry , Japan Society , Joint Research ,

Key building block for organic molecules discovered in meteorites

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IMAGE: Photo of a piece of the Murchison meteorite that was used in this study.
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Credit: NASA
Scientists from Japan and NASA have confirmed the presence in meteorites of a key organic molecule which may have been used to build other organic molecules, including some used by life. The discovery validates theories of the formation of organic compounds in extraterrestrial environments.
The chemistry of life runs on organic compounds, molecules containing carbon and hydrogen, which also may include oxygen, nitrogen and other elements. While commonly associated with life, organic molecules also can be created by non-biological processes and are not necessarily indicators of life. An enduring mystery regarding the origin of life is how biology could have arisen from non-biological chemical processes, called prebiotic chemistry. Organic molecules from meteorites may be one of the sources of organic compounds that led to the emergence of lif ....

United States , Goddard Space Flight Center , Yasuhiro Oba , Daniel Glavin , Jason Dworkin , Laboratory Research , Nature Communications , Astrobiology Institute , Space Administration , Institute Of Low Temperature Science , Hokkaido University , National Aeronautics , Simons Foundation , Japan Society For The Promotion Of Science , Planetary Science Division Internal Scientist Funding Program , Chicago Field Museum , Goddard Center , Astrophysical Chemistry Ice Planetary Science Group , Professor Yasuhiro Oba , Space Flight Center , Japan Society , Fundamental Laboratory Research , Planetary Science Group , Low Temperature Science , ஒன்றுபட்டது மாநிலங்களில் , கோடார்ட் இடம் விமானம் மையம் ,