Green Car Congress

APRIL 22, 2011

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

Ozone PHEV Texas San Antonio 218

Green Car Congress

MAY 5, 2015

VOCs and nitrogen oxides react with sunlight to form ground-level ozone, the main component of smog. and so the question is: what does that do to the environment. They then compared their findings with government emissions estimates from 2011. That is a very complicated question and it has many different aspects. de Gouw et al.

Ozone 150

Ozone Emissions Colorado Coal 150

Green Car Congress

OCTOBER 1, 2019

Freight transportation is a pillar of the US national economy, but while long-haul trucks account for less than 6% of the vehicle miles traveled over US highways, they account for about 40% of the emissions of air polluting particulate matter and about 55% of nitrogen oxides, the precursor to ozone in the atmosphere, the study said.

Emissions 286

Emissions Diesel Ozone United States 286

Green Car Congress

FEBRUARY 15, 2020

The research was a collaboration between MIT’s Laboratory for Aviation and the Environment and the MIT Joint Program on the Science and Policy of Global Change. They first obtained emissions data from each of seven sectors for the years 2005, 2011, and 2018. Early-death source–receptor matrices for 2011. and/or ozone.

MIT 307

MIT Pollution Emissions 2005 307

Green Car Congress

MAY 1, 2018

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. —Jiang et al.

Emissions 150

Emissions Ozone Pollution EPA 150

Green Car Congress

SEPTEMBER 27, 2015

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

London Pollution Diesel Emissions 150

Green Car Congress

MAY 2, 2016

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. As reported earlier here ( earlier post ) a recent literature review by a team from the University of Edinburgh (Timmers et al. earlier post ).

Exhaust 150

Exhaust Emissions Belgium Gasoline-Electric 150