Remove 2011 Remove Environment Remove Gasoline Remove Ozone
article thumbnail

Texas study finds PHEV use could increase ozone at night, decrease ozone during the day

Green Car Congress

A study by researchers at the University of Texas found that in general, use of plug-in hybrid electric vehicles (PHEVs) can lead to an increase in ozone during nighttime hours (due to decreased scavenging from both vehicles and EGU stacks) and a decrease in ozone during daytime hours.

Ozone 218
article thumbnail

Airborne measurements show ozone-forming VOCs emissions from ethanol plant higher than government estimates

Green Car Congress

VOCs and nitrogen oxides react with sunlight to form ground-level ozone, the main component of smog. Over the past decade, because of the renewable fuel mandate, we have added 10 percent of ethanol to all the gasoline that is sold in the U.S. and so the question is: what does that do to the environment.

Ozone 150
article thumbnail

Study finds significant slowdown in decrease of NOx emissions in US; implications for air quality management

Green Car Congress

NO x emissions have not been decreasing as expected in recent years (2011–2015) when comparing top-down estimates from satellites and surface NO 2 measurements to the trends predicted from the US Environmental Protection Agency’s emission inventory data, according to a new study by an international team of researchers.

Emissions 150
article thumbnail

Study uncovers role of longer-chain unburned hydrocarbon emissions from diesels in London air pollution; calls for regulatory shift

Green Car Congress

The study found that 60% of the winter primary hydrocarbon hydroxyl radical reactivity in London is from those diesel-related hydrocarbons; the authors predicted that the longer-chain HCs contribute up to 50 % of the ozone production potential in London. Dunmore et al.

London 150
article thumbnail

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

Green Car Congress

reported in their paper on a policy workshop convened in 2011 on the relevance of traffic-related wear emissions for air quality policy development, with the focus on non-exhaust PM emissions. EVs were the best alternative to diesel and gasoline vehicles across all categories. earlier post ). Background. Hooftman et al. Hooftman et al.

Exhaust 150