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In early 2013, the Chinese government declared a war on air pollution and began instituting stringent policies to regulate the emissions of PM 2.5. Cities restricted the number of cars on the road, coal-fired power plants reduced emissions or were shuttered and replaced with natural gas. Over the course of five years, PM 2.5
In-cylinder pressure (on the left) and heat release rate (on the right) as a function of the CAD and ozone concentration injected in the intake of the engine for PRF40. The results show that ozone seeding improves combustion and advances phasing. The same trends were observed for the other fuels studied. Credit: ACS, Masurier et al.
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, the main component of smog, is a plant-damaging pollutant formed by emissions from vehicles, cooking stoves and other sources. New research shows that ozone pollution damaged millions of tons of wheat, rice, soybean and cotton crops in India in 2005. Surface ozone pollution in India damaged 6 million metric tons (6.7
Researchers from Rice University and the US Environmental Protection Agency (EPA) report in a paper in the journal Atmospheric Chemistry that particularly in Northeastern cities, ozone levels dropped even beyond what was anticipated by cutting emissions of NO x from 2002 to 2006. —Daniel Cohan, co-author. Earlier post.).
In China, people breathe ozone-laden air two to six times more often than people in the United States, Europe, Japan, or South Korea, according to a new international study published in Environmental Science & Technology Letters. 2017 for one ozone metric. For China, sites in 74 major cities with continuous observations from 2013?2017
million of Fiscal Year 2013 funds ( FTA-2014-001-TRI ) for the deployment of low- or no-emission (LoNo) transit buses. The program gives priority consideration to the deployment of buses with the lowest energy consumption and least harmful emissions, including direct carbon emissions. Of that amount, $21.6 7407(d)); or.
The California Energy Commission unanimously adopted the 2013-2014 Investment Plan Update to support the development and use of green vehicles and alternative fuels. They are available only for new natural gas and propane vehicles that meet all the emission requirements of the California Air Resources Board.
The California Air Resources Board’s latest state inventory of greenhouse gas emissions shows that California’s GHG emissions continue to decrease. Trends in California GHG Emissions. Changes in emissions by Scoping Plan sector between 2000 and 2017. Emissions are organized by the categories in the AB 32 Scoping Plan.
US Congressman Scott Peters (CA-52) introduced the Super Pollutant Emissions Reduction Act (SUPER Act) of 2013, legislation aimed at combating short-lived climate pollutants, which are only somewhat addressed by disparate government programs. C in projected cumulative warming by 2050 and 1.1 °C
FTP cycle-weighted tailpipe emissions of N 2 O, NO x , and the sum of NMOG and NO x. The minimum in NO x and NMOG emissions for midlevel ethanol blends points to future opportunities for emission reductions from FFVs. Credit: ACS, Hubbard et al. Click to enlarge. E40); and the new range for high-level ethanol blends (E55, E80).
The US Environmental Protection Agency (EPA) is issuing a proposed rule under the Clean Air Act (CAA) that would waive requirements beginning in 2013 for systems used at gas station pumps to capture potentially harmful gasoline vapors while refueling cars. Source: EPA. Click to enlarge. Most VRS are vacuum assist, according to EPA.
California’s latest greenhouse gas data shows that while the state continues to stay below its 2020 target for emissions, there is much more work to do to achieve carbon neutrality by 2045. California statewide GHG emissions dropped below the 2020 GHG Limit in 2016 and have remained below the 2020 GHG Limit since then.
The California Air Resources Board (ARB) has issued its official Auction Notice for the California Cap-and-Trade Program Greenhouse Gas Allowance Auction on 19 February 2013—the second official auction. The February 2013 allowance auction will. The February 2013 auction will be conducted using an electronic, internet-based.
The purpose of the federal RFG program is to improve air quality in certain areas through the use of gasoline that is reformulated to reduce motor vehicle emissions that lead to the formation of ground-level ozone. States which are designated by EPA as part of the Ozone Transport Region, such as Maine, can “opt-in” to the program.
The California Air Resources Board (ARB) is soliciting research suggestions for the Fiscal Year 2012-2013 Annual Research Plan in the form of brief conceptual descriptions that address specified research gaps and support the Board’s ongoing regulatory and policy priorities. The deadline to submit research concepts is 31 January 2012.
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 Source: Air Quality in Europe 2013 Report. The emission reductions resulted in a notable reduction of ambient concentrations of SO 2 , CO, and Pb.
HFCs are synthetic gases that are used in a variety of applications, but mainly to replace ozone-depleting substances in aerosols, foams, refrigeration and air-conditioning. California is required to reduce HFC emissions 40% below 2013 levels by 2030 under Senate Bill 1383. This equipment often leaks refrigerants over time.
One of the more lasting contributions we can make in our community is to protect the environment by reducing ozone-forming emissions wherever possible. Approximately 50% of all Republic vehicles purchased in 2013 are powered by gas. The new CNG fleet will replace older diesel-powered trucks.
Neste Oil is building a system for recovering emissions released when loading ships at the harbor of its Porvoo (Finland) refinery. The new facility will reduce the refinery’s overall hydrocarbon emissions significantly as gasoline loading at the refinery’s harbor are the site’s single largest source of VOC emissions.
The California Air Resources Board on Thursday adopted the final greenhouse gas (GHG) emissions cap-and-trade regulation. The “cap” limits GHG emissions, and uses allowances—one allowance equals one ton of GHGs—to control total emissions. Compliance obligations for greenhouse gas emissions begins 1 January 2013.
This action is based on the premise that federal law preempts state and local tailpipe greenhouse gas (GHG) emissions standards as well as zero emission vehicle (ZEV) mandates. California’s ability to enforce its Low Emission Vehicle program and other clean air standards to address harmful smog-forming vehicle emissions—i.e.,
The field phase for the SAS began 1 June 2013 and runs through 15 July 2013 and is generally focused in the southeastern United States. SOAS objectives include the direct quantification of VOC, ozone and NO x surface fluxes and the reconciliation of differences with “blank-down” emission estimates.
The California Air Resources Board directed its staff to take steps to provide further locomotive and rail yard emission reductions beyond those achieved by existing US Environmental Protection Agency and state regulations and agreements. While we are pleased to have already reduced diesel emissions at the rail yards, it’s not enough.
These regions contain two-thirds of total global anthropogenic NO x emissions. Even though larger cities are typically more energy efficient with lower per-capita emissions, more people still translates to more pollution.) for China, reflecting regional differences in industrial development and per capita emissions.
such a fuel would result in equivalent emissions performance. As one aspect concerning evaporative emissions, EPA notes that as the ethanol level in the fuel increases, the volatility increase caused by blending ethanol with gasoline begins to decline, such that at E30 there is only about a 0.5-psi psi RVP increase. psi RVP and 7.8
CARB approved the State Strategy for the State Implementation Plan ( State SIP Strategy ), which describes CARB’s commitment for further reducing vehicle emissions needed to meet federal air quality standards over the next 15 years. emissions by more than 20%. emissions by more than 20%.
Comparison of the potential reduction in emissions with the application of lower sulfur 0.5% The study found the potential for 1,500–2,000 Bering Strait transits in 2025, a three- to four-fold increase from 440 transits in 2013 (based on the medium-growth scenario). fuel for Arctic vessels assuming a low-growth scenario. Source: ICCT.
Regulatory regimes seeking to reduce emissions from transport have largely focused on tailpipe emissions—i.e., Further, a 2013 review by Denier van der Gon et al. 2013 found that the ratio of non-exhaust to exhaust particles is strongly increasing in the last two decades, due to exhaust emission reductions.
The study also shows that the proportion of gaseous aromatic compounds—apart from benzene—in hydrocarbon emissions is two to three times greater in pollution plumes in Paris than in Los Angeles, even though the total quantity of hydrocarbons emitted in Los Angeles remains considerably greater than in Paris. Sarda-Estève, J.
A team of researchers in the Institute for Integrated Catalysis at Pacific Northwest National Laboratory led by chemist János Szanyi has proposed a reaction mechanism for a highly active zeolite catalyst (Cu-SSZ-13) used in selective catalytic reduction (SCR) NO x aftertreatment systems for diesel emissions. Peden, and János Szanyi (2013).
They accounted for both CO 2 emissions and emissions of ozone precursors (NO x , VOC, CO) and aerosols (BC or black carbon, OC, SO 2 ) as well as cloud effects (aviation-induced cirrus clouds and contrails)—i.e., They then compared these results with results accounting only for CO 2 emissions. fuel consumption.
In the first, they found that when fuel prices drove residents of São Paulo, Brazil, to mostly switch from ethanol to gasoline in their flexible-fuel vehicles, local ozone levels dropped 20%. Officials, Geiger said, will need to weigh the increase in ozone against the decrease in nanoparticles when ethanol is used.
With the near-zero emission factors demonstrated for natural gas vehicles, it is expected that these vehicles could play an important role in providing much needed emissions reductions required for the South Coast Air Basin and California to reach federal air quality attainment standards. liter equipped vehicle.
SLCPs include black carbon (soot), methane and hydrofluorocarbons (HFCs)—the fastest-growing source of GHG emissions in California and globally—which are used as refrigerants, aerosol propellants and insulation. Therefore a target for forest-derived black carbon emission reductions is not included in the SLCP Strategy.
The Afternoon Constellation, so named because it crosses the equator at approximately 1:30 PM local time every day, consists of five existing satellites in tight formation, collecting simultaneous data on aerosols, clouds, cloud ice, carbon sinks, carbon sources, ozone, particulates, and atmospheric water vapor.
Between 2009 and 2013, transthoracic echocardiography including an evaluation of pulmonary pressure was conducted in 16,295 individuals and correlated with average air pollution in Brussels on the same day and in the last five and ten days. and ozone on pulmonary circulation on the same day and over five and ten days.
In “Estimated Excess Morbidity and Mortality Caused by Air Pollution above ATS Recommended Standards, 2011-2013,” published online in the August edition of Annals of the American Thoracic Society , researchers report on the annual health benefits of meeting more protective standards recommended by the ATS for O 3 and PM 2.5. 201602-103AR.
Perhaps even more importantly, the study offers some quantifiable, granular data about how much electric vehicles are impacting emission rates in the here and now, not in the foreseeable future. For vehicle emission rates, those numbers dropped 2.6% Looking at the data, the researchers also saw a drop in emissions during the pandemic.
Counties where measured ozone is above proposed range of standards, based on 2011-2013 monitoring data. Earlier this year, EPA staff had recommended the further reduction of this primary ozone standard from the current 75 ppb (parts per billion) to a revised level within the range of 70 ppb to 60 ppb—and preferably below 70 ppb.
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 proposing an accelerated schedule for designating areas for the primary ozone standard. Source: EPA.
Annual average concentrations of fine particulates from US sources of combustion emissions from (a) electric power generation; (b) industry; (c) commercial and residential sources; (d) road transportation; (e) marine transportation; (f) rail transportation; (g) sum of all combustion sources; (h) all sources. Source: MIT. Click to enlarge.
Exposure to higher ozone concentrations in the air is significantly associated with a higher risk of out-of-hospital cardiac arrest (OHCA), according to preliminary research to be presented at the American Heart Association’s Resuscitation Science Symposium 2020. Participants were age 63 years on average, 61% were men and 53% were non-white.
In 2013, 87% of the world’s population lived in areas exceeding the World Health Organization (WHO) Air Quality Guideline of 10 μg/m 3 PM 2.5 Between 1990 and 2013, global population-weighted PM 2.5 Additionally, the study found that the population-weighted mean concentrations of ozone increased globally by 8.9%
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