Remove Emissions Remove Ozone Remove Universal Remove Waste
article thumbnail

Emissions of potent GHG HFC-23 have grown, contradicting reports of huge reductions

Green Car Congress

Despite reports that global emissions of the potent greenhouse gas, HFC-23, were almost eliminated in 2017, an international team of scientists, led by the University of Bristol, has found atmospheric levels growing at record values. As a result, they reported that they had almost completely eliminated HFC-23 emissions by 2017.

Emissions 199
article thumbnail

Researchers suggest that air quality tests need simplifying to help reduce dangerous emissions

Green Car Congress

New methods of testing and simulating air quality should be considered in order to help policy makers have a more accurate understanding of how emissions affect air pollution levels, new research suggests. The researchers compared current techniques used to describe atmospheric chemical reactions against more historical techniques.

Emissions 170
article thumbnail

Researchers Discover New Chemistry for Ozone Formation; Not Yet Monitored or Incorporated into Atmospheric Models

Green Car Congress

A) shows the base case peak concentrations for O 3 (ozone), ClNO and HCl in parts-per-billion by volume (ppbv). (B) Under extreme circumstances, this previously unknown chemistry could account for up to 40 parts per billion (ppb) of ozone; the current US Environmental Protection Agency (EPA) 8-hour average standard is 75 ppb.

Ozone 150
article thumbnail

The importance of considering non-exhaust traffic emissions; the role of EVs

Green Car Congress

Regulatory regimes seeking to reduce emissions from transport have largely focused on tailpipe emissions—i.e., 2013 found that the ratio of non-exhaust to exhaust particles is strongly increasing in the last two decades, due to exhaust emission reductions. Further, a 2013 review by Denier van der Gon et al. earlier post ).

Exhaust 150
article thumbnail

Study Finds Current Swedish Biofuels Offer Major Climate Benefits; Biogas from Manure the Best

Green Car Congress

A study by researchers at Lund University in Sweden found that Swedish biofuels produce between 65 and 148% less greenhouse gas emissions than gasoline and diesel, even when direct and indirect land use changes are taken into account. Pål Börjesson, researcher in Environment and Energy Systems at Lund University. Resources.

Climate 170
article thumbnail

Life cycle analysis of three battery chemistries for PHEVs and BEVs; environmental impacts higher than expected

Green Car Congress

Researchers from the Norwegian University of Science and Technology (NTNU) have performed life cycle assessments (LCA) of three batteries for plug-in hybrid (PHEV) and full performance battery electric (BEV) vehicles. They also found higher life cycle global warming emissions than have been previously reported. Click to enlarge.

article thumbnail

UC Davis Begins $2.8M Studies on Impacts of Escaped Nitrogen

Green Car Congress

University of California, Davis researchers will receive $2.8 Wastes from cattle, chickens and other livestock include nitrogen. 500,000 from the California Energy Commission and $350,000 from the David and Lucile Packard Foundation to Johan Six for new research on nitrous oxide emissions in various farming systems.

Davis 240