This site uses cookies to improve your experience. To help us insure we adhere to various privacy regulations, please select your country/region of residence. If you do not select a country, we will assume you are from the United States. Select your Cookie Settings or view our Privacy Policy and Terms of Use.
Cookie Settings
Cookies and similar technologies are used on this website for proper function of the website, for tracking performance analytics and for marketing purposes. We and some of our third-party providers may use cookie data for various purposes. Please review the cookie settings below and choose your preference.
Used for the proper function of the website
Used for monitoring website traffic and interactions
Cookie Settings
Cookies and similar technologies are used on this website for proper function of the website, for tracking performance analytics and for marketing purposes. We and some of our third-party providers may use cookie data for various purposes. Please review the cookie settings below and choose your preference.
Strictly Necessary: Used for the proper function of the website
Performance/Analytics: Used for monitoring website traffic and interactions
From 2011 to 2015, California experienced its worst drought on record, with a parching combination of high temperatures and low precipitation. Although ozone in the stratosphere protects the earth from ultraviolet radiation, at ground level the molecule is a harmful air pollutant to humans, animals and plants.
million in 2021 Targeted Airshed Grant (TAG) funding from the US Environmental Protection Agency (EPA) to deploy five XCIENT Fuel Cell electric trucks in California. EPA’s TAG program aims to reduce air pollution in areas of the nation with the highest levels of ambient ozone and fine particulate matter (PM 2.5 ) pollution.
Springtime ozone distributions for 1984, 1995–2008 in the mid-troposphere (3.0–8.0 Springtime ozone levels above western North America are rising primarily due to air flowing eastward from the Pacific Ocean, a trend that is largest when the air originates in Asia. The US EPA recently proposed new tougher ground-level ozone standards.
The California Air Resources Board today approved a statewide plan for attaining the federal health-based standard for ozone, typically experienced as smog. The 2022 State Implementation Plan Strategy identifies the state’s control strategy for meeting the federal 70 parts per billion, 8-hour ozone standard over the next 15 years.
Ozone levels across much of North America and Europe dropped significantly between 2000 and 2014. People living in parts of southern Europe, South Korea and southern Japan and China also experienced more than 15 days a year of ozone levels above 70 ppb. Trends in daily maximum ozone levels (known as 4MDA8) at urban and non-urban sites.
Illustration of projected ozone changes in the South Coast region due to climate change in 2050. Areas in orange and red could see ozone concentrations elevated by 9 to 18 parts per billion. These narrow-focused models utilize high-resolution information about the geography, meteorology and emissions of these areas.
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
Five technology paths for very-low-NO x and GHG emissions from heavy-duty natural gas engines. The “Pathways to Near-Zero-Emission Natural Gas Heavy Duty Vehicles” report, authored by GNA on behalf of Southern California Gas Co. An 80% reduction of GHG emissions is targeted for 2050, relative to 1990 levels. Background.
US EPA Region 9 8-hour ozone trends, 1979-2000. These State Implementation Plans (SIPs) are the roadmaps to meeting the 1997 8-hour ozone National Ambient Air Quality Standards (NAAQS) of 0.08 In 1997, EPA first established the 8-hour ozone standard, which replaced the older 1-hour ozone standard (0.12 Source: EPA.
The objective of the emission impact analysis was to respond to EPA’s request for comments as to the merits of reducing NO x emissions from heavy-duty trucks by 50 to 90% as outlined in the 6 January 2020 Advance Notice of Proposed Rulemaking (ANPR) of the CTI. Source: MECA. ppb in the west (San Bernardino, CA) and 4.9
According to a study commissioned by the Washington, DC-based Propane Education & Research Council (PERC), NO x emissions measured from propane autogas school buses were substantially lower than those measured from diesel school buses. For the stop-and-go route, NO x emissions were 34 times higher for the diesel school bus.
The California Air Resources Board’s latest state inventory of greenhouse gas emissions shows that California’s GHG emissions continue to decrease. Compared to 2016, California’s GDP grew 3.6% Trends in California GHG Emissions. Changes in emissions by Scoping Plan sector between 2000 and 2017.
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. Source: California Air Resources Board (ARB). Total statewide 2018 GHG emissions were 425.3 Transportation emissions declined 1.5
The two combine in the atmosphere to make either nitric acid or peroxynitrous acid; the so-called branching ratio of these two chemicals is important in models of ozone production. A research team led by NASA’s Jet Propulsion Laboratory and the California Institute of Technology (Caltech), both in Pasadena, Calif.,
The California Air Resources Board recently approved first-in-the-nation rules to curb the impact of hydrofluorocarbon (HFC) refrigerants. 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.
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. Bid quantities can only be submitted in multiples of 1,000 California. Destruction of Ozone Depleting Substances.
Exposure to ozone at levels currently deemed safe by the NAAQS clean air standards can have a significant and negative effect on lung function, according to researchers at the University of California, Davis. Edward Schelegle, University of California, Davis. Earlier post.). Specifically, we found that 6.6
The California Air Resources Board approved changes to an existing $28 million financial assistance program this week that will significantly help more California independent truckers qualify for the purchase of a cleaner-running vehicle. VIP is part of the state’s overall plan to cut toxic diesel emissions 85 percent by 2020.
The California Air Resources Board (CARB) voted to approve an updated plan for the South Coast Air Basin aimed at further cutting smog-forming emissions to attain the federal 8-hour ozone standard. The plan also includes current efforts to transform California’s vehicle fleet to zero-emission.
The US Environmental Protection Agency (EPA), USDepartment of Justice (DOJ), and California Air Resources Board (CARB) announced a proposed settlement with Daimler AG and its American subsidiary Mercedes-Benz USA, LLC resolving alleged violations of the Clean Air Act and California law associated with emissions cheating.
The California Air Resources Board (ARB or Board) announced a solicitation for a grantee for up to $1 million to support up to two independent projects for demonstration and administration of advanced locomotive technologies that approach, meet, or exceed US Environmental Protection Agency (EPA) Tier-4 locomotive NO x and PM emission standards (i.e.,
The California Air Resources Board (ARB) issued a grant solicitation for demonstration projects on zero-emission off-road equipment. The solicitation is open to local air districts or other California-based public agencies that demonstrate the requisite technical and administrative expertise.
The California Air Resources Board (ARB) and the National Oceanic and Atmospheric Administration (NOAA) are collaborating in the $20-million CalNex research project to examine the nexus between air pollution and climate change. The complex roles that ozone and aerosols play in the atmosphere provide examples of such trade-offs.
2010 engines emissions reduction relative to 2010, 2007, and 2004 US emission standards. The study, the Phase 2 Report of the comprehensive Advanced Collaborative Emissions Study (ACES). These reductions came while emissions of fine particles were also 92% lower than the 2010 standard 99% lower than 2004 emissions.
The California Energy Commission unanimously adopted the 2013-2014 Investment Plan Update to support the development and use of green vehicles and alternative fuels. Buyers must agree to register and operate the vehicles in California at least 90 percent of the time for three years. $7 million ZEVs on the state’s roads.
VOCs, primarily emitted from the tailpipes of vehicles, are a key ingredient in the formation of ground-level ozone which, at high levels, can harm people’s lungs and damage crops and other plants. even though the fuel sale in California increased by about a factor of three over the same time period. —Warneke et al.
million in additional California Air Resources Board (CARB) funding to replace heavy-duty trucks through the Valley Air District’s grant program. Reducing emissions from mobile sources is key to the San Joaquin Valley meeting federal ambient air quality standards. million of that funding allocated for the San Joaquin Valley.
has paid $422,500 in penalties for supplying gasoline and diesel fuel in violation of California regulations designed to protect air quality. Chevron agreed to pay the penalties as part of three separate settlements it reached with the California Air Resources Board (ARB). Chevron USA Inc. In all, 15.9
BASF announced the commercial launch of PremAir NXT, a next-generation direct ozone reduction (DOR) catalytic coating technology for heat exchange surfaces such as radiators that can help automakers meet new US Tier 3 and California LEV III emissions reduction requirements. it converts ground-level ozone already in the air.
The US Environmental Protection Agency (EPA) has pushed back its projected release of the Notice of Proposed Rulemaking (NPRM) for Tier 3 light-duty vehicle emission and fuel standards to July 2012. The standards in the new rule will lead to further reductions in ozone, particulate matter, nitrogen dioxide, and mobile source air toxics.
At its meeting in Sacramento yesterday, the California Air Resources Board (ARB) endorsed the state’s cap-and-trade regulation. The “cap”—which declines each year—limits GHG emissions, and uses allowances to control total emissions; one allowance equals one ton of GHGs.
Illustration of light-duty vehicle sales share by emission certification level projected to be required to meet. The California Air Resources Board (ARB) is developing a proposal for more stringent emission requirements—i.e., Super Ultra Low-Emission Vehicle (SULEV). proposed NMOG+NO x standards in new LEV III.
As California continues to reduce local sources of ozone, ozone entering the state from the Pacific makes up a larger fraction of measured ozone levels. An ozonesonde is a balloon which measures ozone from the surface to more than 10 kilometers above the ground.
million in funding by the New York State Energy and Research Development Authority (NYSERDA) to supply diesel emission control technology as part of a New York City ferry emission reduction program. Over the next several months, CDT will supply and manage the installation of the emission control technology. has been awarded $1.3
The Governing Board of California’s South Coast Air Quality Management District (SCAQMD) earlier this year voted to petition the US Environmental Protection Agency (EPA) to adopt tougher emission standards for engines of heavy-duty trucks to help the region meet federal clean air goals. liter engine, produced by Cummins Westport Inc.,
The California Air Resources Board (ARB) will host a public workshop to discuss regulatory concepts to reduce NO x emissions from new on-road heavy-duty vehicles greater than 10,000 pounds gross vehicle weight rating. The workshop will be available via webcast for those unable to attend in person.
SJC’s deployment is a first for a California airport and among the largest deployments for a US airport. Funded in part by a $5-million zero-emissions grant from the Federal Aviation Administration, the electric buses replace the aging compressed natural gas bus fleet that has been operating at SJC since 2008.
On the first day of a two-day board meeting—the second day of which (Friday 24 March) will consider the Advanced Clean Cars Midterm Review—the California Air Resources Board (ARB) took a number of climate and air quality actions. emissions by more than 20%. emissions by more than 20%.
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.
Dust, ozone and carbon can accumulate in valleys and basins in California and other Western states. Los Angeles experiences at least one extra day a year of smog that exceeds federal ozone limits because of nitrogen oxides and carbon monoxide emitted by Chinese factories making goods for export, the analysis found.
The California Air Resources Board (CARB) announced a settlement with Del Monte Fresh Produce N.A. The At-Berth Regulation is a critical tool for CARB to cut harmful toxic diesel emissions from ships docked in California ports, and we hope this penalty will send a message that violators will pay a hefty price if they fail to comply.
The global market for rocket launches may require more stringent regulation in order to prevent significant damage to Earth’s stratospheric ozone layer in the decades to come, according to a new study by researchers in California and Colorado. Darin Toohey.
The California Air Resources Board (ARB) has released. The AB 32 Scoping Plan, which guides development and implementation of California’s greenhouse gas emission reduction programs. Achieving our long-term climate goal and 2032 ozone standards will require a much deeper penetration of ZEVs into the fleet.
The transportation sector was responsible for over 7 million tons of NO x emissions in the US in 2014, with 50% of this sector’s NO x attributed to heavy-duty on- and off-road vehicles and equipment. NO x is a precursor for both ground level ozone and secondary PM 2.5 Source of data: US EPA (2019). Chart: MECA.
We organize all of the trending information in your field so you don't have to. Join 5,000+ users and stay up to date on the latest articles your peers are reading.
You know about us, now we want to get to know you!
Let's personalize your content
Let's get even more personalized
We recognize your account from another site in our network, please click 'Send Email' below to continue with verifying your account and setting a password.
Let's personalize your content