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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).
For that reason, and after a systematic review of the accumulated evidence, WHO has adjusted almost all the AQGs levels downwards, warning that exceeding the new air quality guideline levels is associated with significant risks to health. When action is taken on these classical pollutants—particulate matter (PM), ozone (O?),
Among the many climate-related vulnerabilities that can impact its mission, the US Environmental Protection Agency (EPA) cites a likely increase in tropospheric ozone pollution as potentially making it more difficult to attain National Ambient Air Quality Standards ( NAAQS ) in many areas with existing ozone problems.
Renault’s comparison of the carbon footprint of EV and ICE vehicles over production, operation and end of life. Renault also had a panel of experts review the report the ensure full compliance with ISO 14 030 norms related to LCA; the company also published that review report. Quantifies the production of pollutant ozone (?
This new study is based on a thorough review of a decade of research on aviation emissions. 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%
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 growth in carbon dioxide emissions from energy and industry has exceeded even the most fossil-fuel intensive scenario developed by the IPCC at the end of the 1990s.
In the report, the investigators describe the development of new exposure models for all of Europe for four pollutants: fine particulate matter (PM 2.5 ), black carbon (BC), nitrogen dioxide (NO 2 ), and ozone (O 3 ), as well as PM 2.5 Initial results were published in 2019 and Phase 2 results are under review.
Earlier in December, ARB announced that the American Carbon Registry and the Climate Action Reserve had been formally approved as offset project registries to help evaluate compliance-grade carbon offsets under California’s cap-and-trade program. Destruction of Ozone Depleting Substances. Urban forestry. Dairy manure digesters.
The new NAAQS review process. EPA sets NAAQS for six key pollutants known as “criteria pollutants” that are commonly found across the United States: ozone, particle pollution (particulate matter), lead, carbon monoxide, nitrogen dioxide and sulfur dioxide. Click to enlarge.
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.
A new report prepared by the World Bank at the request of the G8 identifies ways that the World Bank can do more through its projects to reduce the emission of short-lived climate pollutants (SLCPs): black carbon, methane, tropospheric ozone, and fluorinated gases known as HFCs. Over the six-year period of the review (FY2007-2012), 7.7
The study will appear next month in the peer-reviewed journal Climatic Change Letters. Relying more on natural gas would reduce emissions of carbon dioxide, but it would do little to help solve the climate problem. The study underscores the complex and sometimes conflicting ways in which fossil fuel burning affects Earth’s climate.
Achieving our long-term climate goal and 2032 ozone standards will require a much deeper penetration of ZEVs into the fleet. Furthermore, commercially available technologies, such as fuel efficient passenger vehicle tires, can be utilized by both new and in-use vehicles in the near-term to achieve GHG emission reductions.
Scientists around Professor Thomas Münzel, Director of Cardiology I at the Department of Cardiology at the Medical Center Mainz of Johannes Gutenberg University Mainz (JGU), reviewed the mechanisms responsible for vascular damage from air pollution together with scientists from the UK and the US. —Münzel et al.
The short-lived climate pollutants (also called super pollutants) include black carbon, a primary component of soot; tropospheric ozone, the principle component of urban smog; methane; and hydrofluorocarbons (HFCs). C in projected cumulative warming by 2050 and 1.1 °C C or more projected warming by 2100, IGSD says.
Overall, HEI’s Review Committee concluded that Kelly and colleagues’ investigation represents a creative effort to explore a subtle change in air quality associated with a complex intervention to reduce traffic congestion. —Dan Greenbaum, HEI’s President. —Professor Frank Kelly. Frank Kelly, H.
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%.
Decomposition of the decadal change in total global CO 2 emissions from fossil fuel combustion by four driving factors; population, income (GDP) per capita, energy intensity of GDP and carbon intensity of energy. giga tonne carbon dioxide equivalent (GtCO 2 eq) (2.2%) per year from 2000 to 2010 compared to 0.4 Click to enlarge.
After a thorough scientific review ordered in 2007 by the US Supreme Court, the US Environmental Protection Agency (EPA) issued a proposal with two distinct findings regarding greenhouse gases. Climate change has the potential to produce increases in ground-level ozone in many regions, according to the report.
Acidification of sea water (“ocean acidification”) as a result of carbon dioxide absorption has also been documented in the Beaufort and Chukchi seas. Peer-review of the scientific content of the report card was facilitated by the Arctic Monitoring and Assessment (AMAP) Program.
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.
Although it is not yet clear which specific pollutant within the traffic-related air pollution mixture is the source of asthma development, reviews by the US Environmental Protection Agency and Health Canada suggest that a causal relationship is likely to exist between long-term nitrogen dioxide (NO 2 ) exposure and childhood asthma development.
The Clean Air Act requires the EPA to set NAAQS for criteria pollutants —currently PM, ground-level ozone (O 3 ), carbon monoxide (CO), lead (Pb), sulfur dioxide (SO 2 ) and nitrogen dioxide (NO 2 ) The law requires the EPA to periodically review the relevant scientific information and the standards and revise them, if appropriate, to ensure (..)
Specifically, the proposed rule updates the current prohibition under section 608 of the Clean Air Act against knowingly venting, releasing or disposing of ozone-depleting (ODS) and substitute refrigerants and extends the requirements, as appropriate, to non-ozone-depleting substitute refrigerants, such as hydrofluorocarbons (HFCs).
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. — Dr. Stephen O.
Review of the literature indicates SiNW for LIB anode are mainly prepared in two ways: chemical vapor deposition (CVD) or wet chemistry method. When compared, wet chemistry method is better than CVD in terms of both economic and environmental performance.
Methane, the key constituent of natural gas, is a potent GHG with a global warming potential more than 25 times greater than that of carbon dioxide. Those benefits include reductions in health effects related to fine particle pollution, ozone and air toxics, along with improvements in visibility.
Here, RME show advantages for primary energy and GHG, but disadvantages in terms of acidification, eutrophication and ozone depletion. This is mainly as a result of carbon releases from the soils and land. Rapeseed biodiesel as an example of the varied environmental impacts of a particular biofuel. Source: “Assessing Biofuels”.
In their extensive analysis of the physical and chemical composition of the emissions, McDonald and colleagues found that the most abundant pollutants were carbon dioxide, carbon monoxide, NO, and NO 2. The ACES results are expected to play an important role in future risk reviews of diesel engines by international and US agencies.
Up there, 10 to 50 kilometers above the Earth’s surface, ozone molecules absorb the sun’s ultraviolet light, protecting life far below. Eventually, they’ll add equipment to spray tiny aerosol particles of calcium carbonate, the compound found in limestone, blackboard chalk, and Tums antacids.
Such land conversion may disrupt any future potential for storing carbon in biomass and soil. However, air-quality modeling suggests that production and use of ethanol to displace gasoline is likely to increase air pollutants such as particulate matter, ozone, and sulfur oxides. Economic effects. Barriers and opportunities.
The committee that wrote the report focused on monetizing the damage of major air pollutants—sulfur dioxide, nitrogen oxides, ozone, and particulate matter—on human health, grain crops and timber yields, buildings, and recreation. The resulting consensus reports undergo external peer review before completion.
The cap is enforced by requiring each source that operates under the cap to turn in one allowance or offset credit for every metric ton of carbon dioxide equivalent (MTCO 2 e) that it emits. Over time, the cap will steadily decline. Because the allowances are tradable, individual emitters do not have specific emission limits.
Further, a 2013 review by Denier van der Gon et al. As reported earlier here ( earlier post ) a recent literature review by a team from the University of Edinburgh (Timmers et al. Non-exhaust PM factors include tire wear, brake wear, road surface wear and resuspension of road dust. The role of EVs.
Spectrum : When you talk about climate interventions, are you including carbon removal and sequestration in that category? We do some work on carbon removal, but that's pretty big space with a lot of investment. Wanser: We do include that in the broad category. Which is good. What do we have to offer these billion people?
In their paper on lifecycle analysis, Emanuela Menichetti and Martina Otto reviewed and assessed 30 LCA studies particularly those relating to the energy balance and greenhouse gas (GHG) emissions of biofuels produced from a range of crops and other biomass feedstocks using various conversion technologies. Lifecycle analysis.
After a thorough scientific review was ordered by the US Supreme Court in 2007, the Environmental Protection Agency (EPA) has issued a proposal on greenhouse gases. The analysis also looked at the impact of climate change on human health and suggests that it may lead to higher levels of ground-level ozone, a harmful pollutant.
Take, for example, the tens of thousands of fossil-fueled ships that chug across the ocean, spewing plumes of pollutants that contribute to acid rain, ozone depletion, respiratory ailments, and global warming. To this end, we've submitted our experimental plans for review by the. Solar climate intervention is.
The update identifies eight key sectors for ongoing action: Energy; Transportation, fuels, land use and infrastructure; Agriculture; Water; Waste management; Natural lands; Short-Lived Climate Pollutants (such as methane and black carbon); and Green Buildings. Background.
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