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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.
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
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. Earlier post.) GHG allowances.
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.
Average annual percentage of black carbon pollution related to Chinese exports. Dust, ozone and carbon can accumulate in valleys and basins in California and other Western states. Black carbon is a particular problem: Rain doesn’t easily wash it out of the atmosphere, so it persists across long distances.
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.
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). Per capita GHG emissions in California have dropped from a 2001 peak of 14.0
million in additional California Air Resources Board (CARB) funding to replace heavy-duty trucks through the Valley Air District’s grant program. The District is currently working on reaching attainment for the federal 8-hour ozone and PM 2.5 The San Joaquin Valley Air District Governing Board unanimously voted to accept $12.9
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 20 million for hydrogen fueling infrastructure.
At 2:56 AM PST today, NASA’s Orbiting Carbon Observatory 2 (OCO-2) was successfully launched into orbit from Space Complex 2 West at California’s Vandenberg Air Force Base, riding on a two-stage Delta II 7320-10 launch vehicle. by Jack Rosebro. This measurement is unique like a fingerprint, and can be used for identification.
At its meeting in Sacramento yesterday, the California Air Resources Board (ARB) endorsed the state’s cap-and-trade regulation. The regulation is designed so that California may link up with programs in other states or provinces within the Western Climate Initiative, including New Mexico, British Columbia, Ontario and Quebec.
The first is the Vehicle Technologies Office (VTO), which aims to advance combustion engine technology and simultaneously reduce criteria emissions, such as carbon monoxide, nitrogen oxides and ozone. —Doug Longman, section manager of engine combustion research within Argonne’s Energy Systems division.
The California Air Resources Board (ARB) has released. Achieving our long-term climate goal and 2032 ozone standards will require a much deeper penetration of ZEVs into the fleet. the final version of the proposed First Update to the Climate Change Scoping Plan (First Update). The draft version was released in February. Earlier post.).
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’s latest state inventory of greenhouse gas emissions shows that California’s GHG emissions continue to decrease. These reductions have occurred while California’s economy has continued to grow. Compared to 2016, California’s GDP grew 3.6% Trends in California GHG Emissions.
The California Air Resources Board on Thursday adopted the final greenhouse gas (GHG) emissions cap-and-trade regulation. Cap-and-trade is another important building block in California’s effort to create a clean and vibrant economy. the destruction of existing stores of ozone-depleting substances in the U.S. Earlier post.)
Led by the tiny Pacific island of the Federated States of Micronesia, a growing group of low-lying islands and other vulnerable countries are calling for fast action on the approximately 50% of global warming that is caused by pollutants other than carbon dioxide (CO 2 ). million lives lost each year due to black carbon soot.
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.
The California Air Resources Board (ARB) has released , for public review, a concept paper to initiate discussion on the development of a Short-Lived Climate Pollutant Reduction Strategy. Short-lived climate pollutants (SLCPs) include methane, tropospheric ozone, black carbon, and fluorinated gases.
Although viewed as a potential target in the global effort to reduce climate change, atmospheric black carbon particles absorb significantly less sunlight than scientists have predicted, according to a new study by an international team of researchers, published in the journal Science. Earlier post.).
NO x emissions remain a significant challenge to air quality in the US, and are a predominant non-attainment concern for many areas, especially in California. NO x was reduced by 96% and carbon dioxide by 13% with a propane bus. For the stop-and-go route, NO x emissions were 34 times higher for the diesel school bus.
Among the direct transportation-related provisions in the extensive package are a low-carbon fuel standard for all transportation fuels; financial support for large scale demonstrations of electric vehicles; and financial support for automakers retooling plants to make electric vehicles. Carbon Capture and Sequestration.
The California Air Resources Board (ARB) is developing a proposal for more stringent emission requirements—i.e., Each certification level has its own permissible emission levels for non-methane organic gases (NMOG), oxides of nitrogen (NO x ), formaldehyde (HCHO), carbon monoxide (CO), and particulate matter (PM). Source: ARB.
The California Air Resources Board (CARB) has posted a revised draft of California’s proposed Short-Lived Climate Pollutant (SLCP) Strategy. Black carbon. Therefore a target for forest-derived black carbon emission reductions is not included in the SLCP Strategy.
The United States and California state averages shown are based on total on- and off-road use. The urban areas in California shown are for on-road fuel use only. These compounds in un-burned gasoline and diesel fuel dominate vehicular emissions of reactive gas-phase carbon that have the potential to form SOA. Gentner et al.
The California Air Resources Board (ARB) has adopted new LEV III emissions regulations which go into effect in 2015, requiring automakers to further reduce evaporative emissions. Traditional solutions involve adding an activated carbon honeycomb or filter to the air intake box to adsorb the hydrocarbons.
Ocean acidification caused by the absorption of carbon dioxide in seawater is already increasing along the California coast decades earlier than existing models predict. The hole in the ozone layer has had a cooling effect on Antarctica, and is partly responsible for masking expected warming on the continent. Ecosystems.
The California Air Resources Board (CARB) has released the results of a multiyear study evaluating exhaust emissions from the use of California Reformulated Gasoline (CaRFG) that contains 15 volume percent ethanol (E15). California currently limits the ethanol content of gasoline to 10 percent.
A new study quantifying emissions from a fleet of gasoline direct injection (GDI) engines and port fuel injection (PFI) engines finds that the measured decrease in CO 2 emissions from GDIs is much greater than the potential climate forcing associated with higher black carbon emissions from GDI engines. —Saliba et al. versus 6.3 ± 1.1
Emissions of carbon monoxide and hydrocarbons were also significantly below required 2010 levels: 97% and more than 99.9%, respectively. The study, the Phase 2 Report of the comprehensive Advanced Collaborative Emissions Study (ACES).
Computer scientists at the University of California, San Diego have built a portable pollution sensors that transmit transmit their air quality readings to smart phones, allowing users to monitor air quality in real time. Boxes represent pollution reading locations during that window. Nikzad et al. Click to enlarge. —Nikzad et al.
million in grants to deploy 70 VNR Electric trucks in Southern California for regional freight distribution and drayage. The US Environmental Protection Agency’s (EPA) Targeted Air Shed Grant Program focuses on the regions that have the highest ozone and particulate matter (PM) pollution, including California’s South Coast Air Basin.
eutrophication; ET = ecological toxicity; FEC = fossil energy consumption; WU = water use; LO = land occupation; “The rest” includes acidification; smog formation; ozone layer depletion; and human health effects. GW = global warming; Eut. Credit: ACS, Yang et al. Click to enlarge.
The California Air Resources Board has equipped two battery-powered electric vehicles to take ground level readings of greenhouse gases throughout the state. The zero-emission RAV 4s were given to ARB as part of a settlement agreement for air quality violations by Toyota.
Volatile organic compounds (VOC), which include hydrocarbons, are major air pollutants as well as precursors of harmful compounds such as tropospheric ozone and secondary organic aerosols. compounds containing 2-12 carbon atoms) are mainly produced by automobiles, a conclusion in line with previous findings.
The California Air Resources Board released its proposed greenhouse gas cap-and-trade regulation. The release begins a public comment period culminating in a 16 December public hearing in Sacramento, California, at which the Board will consider adopting the proposed program. Allowance Distribution and Trading.
This is in contrast to the conventional mobile AC system, where the cabin air is directly cooled by the refrigerant HFC-134a, which is ozone safe but has a high GWP. The new SL-MAC system, which is testing the low-GWP refrigerants, is expected to increase vehicle energy efficiency. A2L and A2 are safety classifications.
Results from a new study by researchers at the University of California Irvine support a growing body of scientific literature indicating that sensitive populations, including children, certain ethnic groups and people of lower socioeconomic status, are more vulnerable to the effects of high exposures to traffic-related air pollution.
Researchers at the University of California San Francisco have engineered the industrial yeast S. They can also be used as intermediates for the chemical synthesis of more complex carbon compounds such as fuel hydrocarbons. fermentans for carbon and energy, and A. cerevisiae to convert biomass to methyl halides with good yield.
As an example, if Christchurch, New Zealand matched the urban form of Indio - Cathedral City, California, the models suggest that Christchurch’s NO 2 concentrations would be ∼60% higher than its current level. As such, cities are a focal point for understanding and addressing environmental health issues. is attributable to motor vehicles.
In the Lower GHG Scenario, further reductions in carbon emissions result from adoption of policies that apply an increasing price on carbon emissions, resulting in faster deployment of low-emission generation technologies. levels throughout the United States. Environmental Assessment of a Full Electric Transportation Portfolio.
In addition, other studies have shown that increases in PM 2.5 , NO 2 , and ozone were associated with lower test scores that were “equivalent to the effects of short-term reductions of thousands of dollars in district median household income.” View the Case Study How much funding is available for EV charging at school districts?
Mikhail Chester and Arpad Horvath inventoried on-road, rail, and air travel to determine energy consumption, greenhouse gas (GHG) emissions, and criteria air pollutant (CAP) emissions (excluding PM, lead, and ozone due to lack of data). Click to enlarge.
Researchers from the University of California, Berkeley , found that between 2018 and 2022, CO2 emission from all sources (industries, homes, traffic) across the San Francisco Bay Area dropped around 1.8% California has a goal to reach net-zero emissions by 2045, and Cohen says that we need emissions to drop 3.7%
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