Live Breaking News & Updates on ப்ரொஃபெஸர் ஆஃப் வளிமண்டலம் அறிவியல்

Stay updated with breaking news from ப்ரொஃபெஸர் ஆஃப் வளிமண்டலம் அறிவியல். Get real-time updates on events, politics, business, and more. Visit us for reliable news and exclusive interviews.

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 ,

Urban air quality less improved by COVID lockdowns than first believed

3 Min Read
ROME (Thomson Reuters Foundation) - Lockdowns during the first wave of COVID-19 had a much smaller impact on urban air quality than first expected, a study of 11 global cities, from Wuhan to New York, found on Wednesday.
As millions stayed home, concentrations in the air of nitrogen dioxide (NO2) - a key pollutant emitted by traffic, linked to respiratory infections and cancer - fell by between 10% and 50%, said the paper in the journal Science Advances.
But at the same time, concentrations of ozone (O3) - which can cause chest pain, harm lung tissue and worsen asthma - increased by 2% to 30% in different cities, scientists found after accouting for the impact of weather and seasonal trends. ....

New York , United States , France General , United Kingdom , New Delhi , City Of , Los Angeles , Katy Migiro , Zongbo Shi , William Bloss , Thomson Reuters Trust Principles , Thomson Reuters , World Health Organization , Professor Of Atmospheric Sciences , Chinese Academy Of Science , University Of Birmingham , Britain University Of Birmingham , Thomson Reuters Foundation , Thin Lei , Atmospheric Sciences , Chinese Academy , Thin Lei Win , Thomson Reuters Trust , Corona Virus , Asia Pacific , Climate Change ,

Early COVID-19 lockdowns had less impact on urban air quality than first believed

Jan 13 2021 Read 467 Times
The first COVID-19 lockdowns led to significant changes in urban air pollution levels around the world, but the changes were smaller than expected – a new study reveals.
After developing new corrections for the impact of weather and seasonal trends, such as reduced NO
2 emissions from winter to summer, the researchers evaluated changes in ambient NO
2, O
3 and fine particle (PM
2.5) concentrations arising from lockdown emission changes in 11 global cities: Beijing, Wuhan, Milan, Rome, Madrid, London, Paris, Berlin, New York, Los Angeles and Delhi.
Led by experts at the University of Birmingham, the international team of scientists discovered that the beneficial reductions in NO ....

France General , New York , United States , City Of , United Kingdom , Los Angeles , William Bloss , Zongbo Shi , Troy Harrison , Professor Of Atmospheric Sciences , World Bank , University Of Birmingham , Science Advances , Atmospheric Biogeochemistry , Queen Elizabeth , Centenary Professor , Environmental Health , Atmospheric Sciences , பிரான்ஸ் ஜநரல் , புதியது யார்க் , ஒன்றுபட்டது மாநிலங்களில் , நகரம் ஆஃப் , ஒன்றுபட்டது கிஂக்டம் , லாஸ் ஏஞ்சல்ஸ் , வில்லியம் மலரும் , ராய் ஹாரிசன் ,