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New analysis has found increasing emissions of several ozone-depleting chemicals despite their production being banned for most uses under the Montreal Protocol—and a loophole in the rules is likely responsible. According to the researchers, emissions from these CFCs currently do not significantly threaten ozone recovery.
Less traffic on the roads during the first COVID-19 lockdown in the UK led to a reduction in air pollution but may have caused potentially damaging surface ozone levels to rise, according to a new study led by researchers at the University of York. 20, 15743–15759 doi: 10.5194/acp-20-15743-2020. These results are a cautionary tale.
Data from the ESA’s Tropomi (TROPOspheric Monitoring) instrument on board the Copernicus Sentinel-5P satellite shows the variation of nitrogen dioxide (NO 2 ) emissions over China from December to March. The drop in emissions also coincided with Lunar New Year celebrations, which usually sees a similar drop in emissions each year.
of the human-made climate impact; two-thirds of this impact are caused by emissions other than CO 2 , according to a new study by researchers in Europe and the US. This new study is based on a thorough review of a decade of research on aviation emissions. The formation and emission of sulfate aerosol yields a negative (cooling) term.
Levels of two major air pollutants have been reduced significantly since lockdowns began in response to the COVID-19 pandemic, but a secondary pollutant—ground-level ozone—has increased in China, according to new research. Maybe this unintended experiment could be used to understand better the emission regulations.
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).
Large improvements of air quality in China during the lockdown have been widely reported, but new research shows that two pollutants harmful to human health—fine particulate matter (PM 2.5 ) and ozone—were only slightly reduced. and ozone were only slightly reduced or barely affected.
The rapidly growing space industry may have a greater climate effect than the aviation industry and undo repair to the protective ozone layer if left unregulated, according to a new study led by UCL and published in the journal Earth’s Future as an open-access paper. The space industry is one of the world’s fastest growing sectors.
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 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
From 2005 through 2020, total US greenhouse gas (GHG) emissions are projected to rise by 4% under a “with measures” scenario (but without a cap-and-trade program and other complementary policies), from 7,109 Tg CO 2 Eq. The report projects that transportation-related CO 2 emissions will drop 1.5% from 2005 to 2020.
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. Last year, Hyundai Motor also announced its NorCal Zero project, also known as Zero-Emission Regional Truck Operations with Fuel Cell Electric Trucks. Earlier post.)
The US Environmental Protection Agency (EPA) released its latest set of proposed standards to reduce emissions of methane and volatile organic compounds (VOCs) from the oil and natural gas industry. The proposed updates also add emissions reduction requirements for sources of methane and VOC pollution that were not covered in the 2012 rules.
Regulatory regimes seeking to reduce emissions from transport have largely focused on tailpipe emissions—i.e., 2013 found that the ratio of non-exhaust to exhaust particles is strongly increasing in the last two decades, due to exhaust emission reductions. Further, a 2013 review by Denier van der Gon et al. earlier post ).
Comparison of the potential reduction in emissions with the application of lower sulfur 0.5% While that report projected vessel activity, it did not explore the environmental impacts of increased shipping in terms of air emissions or the potential climate impacts from increases in short-lived climate pollutants such as black carbon.
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.
Radiative forcing due to perpetual constant year 2000 emissions grouped by sector for 2020 (left) and 2100 (right) showing the contribution from each species. This approach will make it easier to identify sectors for which emission reductions will be most beneficial for climate and those which may produce unintended consequences.”.
The entire life cycle of the passenger cars is taken into account, including the manufacture of the vehicles and the environmentally relevant emissions from driving. Deterioration of the ozone layer [kg CFC-11-eq.]. Noise emissions [Person-Pascal/second]. 2020) Submitted to Renewable and Sustainable Energy Reviews.
Despite reports that global emissions of the potent greenhouse gas, HFC-23, were almost eliminated in 2017, an international team of scientists, led by the University of Bristol, has found atmospheric levels growing at record values. As a result, they reported that they had almost completely eliminated HFC-23 emissions by 2017.
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 goal of CARB’s At-Berth Regulation is to reduce diesel emissions from ocean-going vessels (OGVs).
The models simulate what happens in the atmosphere to predict, for example, how a reduction in certain emissions will affect air quality. pinene into the chamber and caused the compound to react with ozone. In winter, however, emissions from wood-burning systems and their reaction products come to the fore. Resources.
VIP is part of the state’s overall plan to cut toxic diesel emissions 85 percent by 2020. California is currently working toward meeting clean-air standards for ozone and particulate matter emissions.
Asphalt is a near-ubiquitous substance—it’s found in roads, on roofs and in driveways—but its chemical emissions rarely figure into urban air quality management plans. Asphalt’s life cycle and temperature-dependent emissions. (A) Emissions rose markedly with moderate solar exposure (e.g., —Khare et al.
The US Environmental Protection Agency (EPA) has launched the Cleaner Trucks Initiative (CTI) to further decrease NO x emissions from on-highway heavy-duty trucks and engines. The US has made major reductions in NO x emissions, but it’s been nearly 20 years since EPA updated these standards.
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.
They found that reductions in ground ozone during this 35-year period resulted in $600 million in increased production annually by the early 2010s. Another difference is that some grains can be annually modified to withstand greater heat and even higher ozone levels in the air. An open-access paper on the work appears in Nature Food.
New methods of testing and simulating air quality should be considered in order to help policy makers have a more accurate understanding of how emissions affect air pollution levels, new research suggests. Stockwell, Emily Saunders, Wendy S. Goliff & Rosa M.
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%.
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.
Global ozone-depleting substances (ODSs) and HFC emissions (A), global CO 2 and HFC emissions (B), and ODS, HFC, and CO 2 global RF (C) for the period 2000–2050. These HFCs, gases used in refrigerators and air conditioners, are substitutes for ozone-depleting gases, but they are also strong greenhouse gases.
Chlorofluorocarbons (CFCs)—commonly used in refrigerators and air conditioners—play a role in creating a hole in the ozone layer over Antarctica. We infer recent SGHG emissions and examine the impact of future emissions scenarios, with a particular focus on proposals to reduce HFC use under the Montreal Protocol.
Development of sustainable communities strategies can also provide an opportunity for associated criteria pollutant emission reductions that will be needed to attain air quality standards for ozone and particulate matter as well as reduce near-roadway exposures.
The “cap”—which declines each year—limits GHG emissions, and uses allowances to control total emissions; one allowance equals one ton of GHGs. The “cap”—which declines each year—limits GHG emissions, and uses allowances to control total emissions; one allowance equals one ton of GHGs.
In addition, the program funds projects that assist in fulfilling Governor Brown’s Zero Emission Vehicles (ZEV) Action Plan, with a target of installing enough infrastructure to support 1 million ZEVs by 2020, and a 2025 target of having 1.5 million ZEVs on the state’s roads. 20 million for hydrogen fueling infrastructure.
The eventual CTI rulemaking will establish new, more stringent emission standards for NO x and other pollutants for highway heavy-duty engines. From 2007 to 2017, US NO x emissions dropped by more than 40%. EPA intends to publish a proposed rule in early 2020. EPA is seeking input from the public and interested stakeholders.
2758), setting a goal for all new passenger cars and trucks sold in New York State to be zero-emissions by 2035. If adopted, the regulation would accelerate zero-emission truck sales, resulting in improved air quality statewide and in particular those communities disproportionately impacted by transportation-related pollution.
A key part of ARB’s AB 32 Scoping Plan ( earlier post ), the cap-and-trade program provides an overall limit on the emissions from sources responsible for 85% of California’s greenhouse gas emissions. The program is expected to reduce GHG emissions between 18 and 27 MMTCO 2 e in 2020. Allowance Distribution and Trading.
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.
Keynote presentations by leading policymakers as well as detailed technical presentations and panel discussions are focusing on state-of-the-art and emerging technologies that can reduce aircraft noise, emissions and fuel consumption and ensure the safe and manageable growth of the aviation system.
The zero-emission RAV 4s were given to ARB as part of a settlement agreement for air quality violations by Toyota. These on-the-ground assessments will provide invaluable information to assure we are on the right course in terms of measuring and assessing greenhouse gas emissions. ARB Chairman Mary D.
Implementing these approaches, the report finds, would reduce greenhouse gas and other harmful emissions from diesel-powered ships, trucks and other port equipment. Many ports and related freight corridors and facilities are located in nonattainment or maintenance areas for EPA’s ozone and PM 2.5 Click to enlarge.
The ICCT team assessed baseline and alternative system emissions under a variety of different transition pathways using an ICCT model of MAC emissions in the passenger vehicle fleet. These were shown to be ozone-depleting, however, and were targeted for phasing out under the 1987 Montreal Protocol. relative to HFC-134a and 98.6%
Markey of the Energy and Environment Subcommittee on Tuesday released a draft of far-reaching energy and climate legislation that targets job creation, promotes renewables and energy efficiency, and places limits on emissions of greenhouse gases. Any Federal vehicle standards are to achieve at least the results of the California standards.
Alliance for Pulp & Paper Technology Innovation (APPTI) (formerly Agenda 2020 Technology Alliance) will partner with NREL and ORNL to improve pulp yield during kraft pulping process in a project titled “Molecular Modeling to Increase Kraft Pulp Yield”. The project will be fully funded by the Vehicle Technologies Office.
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