2011, Environment and Ozone

Obama Administration withdraws proposed rulemaking on strengthened ozone standards

Green Car Congress

SEPTEMBER 2, 2011

In a statement released this morning, President Barack Obama said he has requested that US Environmental Protection Agency (EPA) Administrator Lisa Jackson withdraw the agency’s draft Ozone National Ambient Air Quality Standards (NAAQS) rulemaking. Earlier post.) National Ambient Air Quality Standards (NAAQS).

Ozone

Ozone Obama Standards EPA

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

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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

Ozone PHEV Texas San Antonio

Study: 2/3 of aviation climate impact due to emissions other than CO2

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SEPTEMBER 6, 2020

The study was published in the journal Atmospheric Environment. Net warming from NO x emissions is a sum over warming (short-term ozone increase) and cooling (decreases in methane and stratospheric water vapor, and a long-term decrease in ozone) terms. Aviation accounts for 3.5% Pitari, M.J. Prather, R. Sausen, L.J.

Climate

Climate Emissions CO2 Climate Change

EPA Proposes New Tougher Ground-Level Ozone Standards

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JANUARY 7, 2010

Counties projected to violate proposed Primary 8-hour Ground-Level Ozone Standards in 2020. The United States Environmental Protection Agency has proposed the strictest standards to date for ground-level ozone. EPA is also proposing to set a separate “secondary” standard to protect the environment within the range of 7-15 ppm-hours.

Ozone

Ozone EPA Standards Arlington

UNEP study: small number of measures targeting black carbon and tropospheric ozone could yield immediate climate benefits

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FEBRUARY 22, 2011

Black carbon and tropospheric ozone are harmful air pollutants that also contribute to climate change. Reducing black carbon and tropospheric ozone now will slow the rate of climate change within the first half of this century, the study said.

Ozone

Ozone Climate Carbon Climate Change

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

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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.

Ozone

Ozone Emissions Colorado Coal

Study finds global emissions of ethane and propane underestimated by more than 50%

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FEBRUARY 27, 2018

When ethane and propane—the most abundant non-methane hydrocarbons (NMHC) in the atmosphere—mix with nitrogen oxides from vehicles and power plants they form tropospheric ozone—a key component of smog and directly linked to increases in mortality. —Professor Ally Lewis, a co-author of the study.

Emissions

Emissions Global Ozone 2011

MIT study: half of US deaths related to air pollution are linked to out-of-state emissions

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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

MIT Pollution Emissions 2005

Study: curbing diesel emissions could reduce mortality rates in big cities

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

Emissions Diesel Ozone United States

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

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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.

Emissions

Emissions Ozone Pollution EPA

Upwards of 90% of EU city dwellers exposed to PM2.5 and O3 pollution at levels deemed harmful by WHO

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OCTOBER 17, 2013

Despite a decline in emissions of the main air pollutants in Europe in the period 2002–2011, around 90% of city dwellers in the European Union (EU) are exposed to PM 2.5 decreased by 14% and 16% respectively in the EU between 2002 and 2011. PM precursor emissions also decreased between 2002 and 2011.

Pollution

Pollution 2002 Ozone 2011

Indo-US task force to study HFC phase-down

Green Car Congress

FEBRUARY 22, 2011

India’s Minister of Environment, Jairam Ramesh, hosted US Deputy Assistant Secretary of State for Environment, Daniel A. The Joint Task Force will submit its report by 1 August 2011. Reifsnyder, in New Delhi, along with members of industry and civil society groups to discuss the HFC issue.

Micronesia

Micronesia Ozone South Africa India

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

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

London Pollution Diesel Emissions

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

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. Achten (2016) “Non-exhaust PM emissions from electric vehicles,” Atmospheric Environment , Volume 134, Pages 10-17, doi: 10.1016/j.atmosenv.2016.03.017.

Exhaust

Exhaust Emissions Belgium Gasoline-Electric

MIT researchers improve upon methods to model urban air pollution

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AUGUST 29, 2011

The inputs upon which this metamodel have been formed are based on a combination of physical properties (average temperature, diurnal temperature range, date, and latitude), anthropogenic properties (patterns and amounts of emissions), and the nature of the surrounding environment (background concentrations of species). —Jason Cohen.

MIT

MIT Pollution Climate South Korea

Volkswagen to use CO2 as refrigerant for future air conditioning systems

Green Car Congress

MARCH 8, 2013

R134a replaced CFC-12 as the MAC refrigerant in the early 1990s due to the negative impact of CFCs on the Earth’s ozone layer. For these reasons, Germany’s Federal Environment Agency (Umweltbundesamt, UBA) took the position in the late 2000s that R134a should be replaced by the natural refrigerant R744.

Future

Future CO2 Climate 2009

EV Driven

Obama Administration withdraws proposed rulemaking on strengthened ozone standards

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

Study: 2/3 of aviation climate impact due to emissions other than CO2

EPA Proposes New Tougher Ground-Level Ozone Standards

UNEP study: small number of measures targeting black carbon and tropospheric ozone could yield immediate climate benefits

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

Study finds global emissions of ethane and propane underestimated by more than 50%

MIT study: half of US deaths related to air pollution are linked to out-of-state emissions

Study: curbing diesel emissions could reduce mortality rates in big cities

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

Upwards of 90% of EU city dwellers exposed to PM2.5 and O3 pollution at levels deemed harmful by WHO

Indo-US task force to study HFC phase-down

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

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

MIT researchers improve upon methods to model urban air pollution

Volkswagen to use CO2 as refrigerant for future air conditioning systems

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