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The open-access paper is published in Nature Communications Earth & Environment. Rather, it is the leaking of hydrogen from production, transportation and usage that adds to global warming. We used five different atmospheric chemistry models and investigated changes in atmospheric methane, ozone and stratospheric water vapor.
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.
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.).
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.
Black carbon and tropospheric ozone are harmful air pollutants that also contribute to climate change. Reducing black carbon and tropospheric ozone now will slow the rate of climate change within the first half of this century, the study said.
The decrease in CO 2 equivalent emissions of ODSs (ozone-depleting substances: CFCs, halons, HCFCs, and others) may be offset by the projected increase in their non-ozone depleting substitutes (HFCs) (lines designated as HFC scenarios). Climate and the Ozone Layer. Source: UNEP. Click to enlarge.
The study was published in the journal Atmospheric Environment. 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% Pitari, M.J. Prather, R. Sausen, L.J.
A team from Duke University in the US and University of York in the UK have utilized a novel method to estimate long-term ozone exposure and previously reported epidemiological results to quantify the health burden from long-term ozone exposure in three major regions of the world. —Karl Seltzer. Karl M Seltzer et al.
Deterioration of the ozone layer [kg CFC-11-eq.]. Eutrophication of non-marine aquatic environments [kg N-eq.]. Eutrophication of non-marine aquatic environments [kg P-eq.]. Land occupation in an urban environment [m 2 / year]. Toxicity of marine aquatic environments [kg 1,4-DC-eq.]. Human toxicity [kg 1,4-DC-eq.].
Ozone pollution near Earth’s surface is one of the main ingredients of summertime smog. It is also not directly measurable from space due to the abundance of ozone higher in the atmosphere, which obscures measurements of surface ozone. —Jin et al.
In a paper published in the journal Atmospheric Environment , they report on the findings from a suite of scenarios designed to quantify the effect of both the magnitude of EV market penetration and the source of electricity generation used to power them. —Schnell et al. Seasons and times of day. Schnell et al. 2019.04.003.
Maersk Container Industry (MCI) is calling for tougher enforcement of European environmental legislation designed to protect the Earth’s ozone layer and help prevent climate change. This would benefit the environment, and it would help European innovation and environmental investments pay off. Nymand, CEO for Maersk Container Industry.
Off-road equipment is a significant source of diesel PM, as well as NO x emissions that lead to ozone and secondary PM, ARB noted. For example, hydrogen fuel-cell lift trucks can be found in warehouse and distribution environments where hydrogen infrastructure has already being introduced—i.e.,
The Houston-Galveston Area Council (H-GAC) has partnered with the Center for Transportation and the Environment (CTE) and Smith Electric Vehicles Corporation (Smith Electric) to reduce vehicle emissions from delivery trucks in the Houston-Galveston region.
However, emissions do not just remain in conurbations; particles and gaseous pollutants can be transported thousands of kilometers by the wind. The University of Bremen is the scientific base of the international project known as EMeRGe (Effect of Megacities on the transport and transformation of pollutants on the Regional and Global scales).
The study by Nadine Unger, Drew Shindell and James Wang will appear in an upcoming issue of the journal Atmospheric Environment. The study by Nadine Unger, Drew Shindell and James Wang will appear in an upcoming issue of the journal Atmospheric Environment. Environ. , Unger et al. Nadine Unger, Drew T. Shindell and James S.
When ethane and propane—the most abundant non-methane hydrocarbons (NMHC) in the atmosphere—mix with nitrogen oxides from vehicles and power plants they form tropospheric ozone—a key component of smog and directly linked to increases in mortality. The study used data collected from 20 observatories world-wide.
Temperature change per transport work by mode for various years after the emissions: per passenger kilometer for passenger travel (left) and per ton-kilometer for freight transport (right). Global average values for the year 2000. Bars represent 1 SD. Credit: ACS, Borken-Kleefeld et al. Click to enlarge.
The European Community’s air pollutant emission inventory report released by the European Environment Agency finds that in 2007, sulphur oxides (SO x ) emissions were down by 72 % from 1990 levels. Other findings of the report include: The road transport sector remains a major source of air pollution in the EU-27.
The data shows a slight increase in overall emissions from the previous year, and a slight decline in emissions from transportation, which is the state’s main source of both GHGs and air pollutants. Transportation emissions declined 1.5 Source: California Air Resources Board (ARB). Total statewide 2018 GHG emissions were 425.3
The US NOAA (National Oceanic and Atmospheric Administration) part of the study, called the Soot Transport, Absorption, and Deposition Study (STADS), will be conducted between 7 April and 6 May, using NOAA’s two Manta aircraft. The study will run through 15 May out of Svalbard, Norway.
The Regional Transportation Commission (RTC) of Washoe County in Washoe County, NV, will receive nearly $6.5 The project also supports RTC’s efforts to transition its aging diesel bus fleet to zero emission vehicles to reduce energy consumption and greenhouse gas emissions in an area where ozone levels currently exceed air quality targets.
Bolden said air travel is one of the safest modes of transportation and vital to the US economy, but increasing air traffic is taking a toll on the environment and the nation’s aviation infrastructure. said at the Green Aviation Summit under way through Thursday at NASA’s Ames Research Center.
Nitrous oxide is a potent greenhouse gas that contributes to climate change and stratospheric ozone destruction. Human activities, including fossil fuel combustion and intensive agriculture, have increased the availability of nitrogen in the environment.
Here, RME show advantages for primary energy and GHG, but disadvantages in terms of acidification, eutrophication and ozone depletion. World Transport Biofuel Production. World ethanol production for transport fuel tripled between 2000 and 2007 from 17 billion to more than 52 billion liters (13.7 of the world’s transport fuel.
Widespread adoption of electric transportation, including electrification in the off-road sector, could lead to substantial reductions in greenhouse gas (GHG) emissions and could modestly improve air quality, according to a new analysis released by the Electric Power Research Institute (EPRI) and the Natural Resources Defense Council (NRDC).
Respectively, Title IV of the 1990 Clean Air Act and the OzoneTransport Commission/NO x Budget Program.). Policymakers rarely see with perfect foresight what the appropriate emissions targets are to protect the public health and environment—the history is that these targets usually need to get stricter.
In particular, TPS technology offers a groundbreaking approach to reducing emissions from combustion engines and improving the environment. it is vital that the transportation world continues to improve the combustion engine technology. —Jim Demetriades, executive chairman of Transient Plasma Systems and CEO of Kairos Ventures.
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. Sections and provisions directly related to transportation are shaded.). Chairman Henry A.
Producing drop-in biofuels could improve the ability to integrate the mandated volumes of biofuels into US transportation, but would not improve the cost-competitiveness of biofuels with petroleum-based fuels. —Renewable Fuel Standard: Potential Economic and Environmental Effects of US Biofuel Policy. Barriers and opportunities.
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 NO x is a precursor for both ground level ozone and secondary PM 2.5
The inputs upon which this metamodel have been formed are based on a combination of physical properties (average temperature, diurnal temperature range, date, and latitude), anthropogenic properties (patterns and amounts of emissions), and the nature of the surrounding environment (background concentrations of species).
Regulatory regimes seeking to reduce emissions from transport have largely focused on tailpipe emissions—i.e., The participants in the 2011 workshop concluded: There is a clear lack of data in the field of road transport wear and suspension emissions to conclusively assess its importance for air quality and the impact on human health.
According to the MoEP, Haifa Bay is one of Israel’s air pollution hotspots due to its high concentration of industrial plants, including an oil refinery and chemical and petrochemical industries, alongside high transport loads and port activities. Air pollution, Haifa. Photo: Ilan Malester. Source: MoEP. Click to enlarge.
Empowering clean transportation for children We’ll start with the most important reason; electric school buses are healthier for the children. Roughly half a million school buses transport about 20 million students each school day in the United States, and nearly all those buses currently run on diesel.
In order to effectively mitigate environmental impacts from transportation modes, life-cycle environmental performance should be considered including both the direct and indirect processes and services required to operate the vehicle. The study was published 8 June in the open access IOP journal Environmental Research Letters.
In 2004, the Centralina region (the Greater Charlotte metro area, which straddles the North CarolinaSouth Carolina border) was designated as a non-attainment area for ozone under the Clean Air Act. is not informed about major transport infrastructure issues. Thompson stepped forward with an idea he thought would help.
Further, the Department for Transport in the UK has declared that it will have banned all conventional petrol and diesel cars by 2030. Additionally, other mandates of this organisation include: • Improving low carbon transport- scientists have established that carbon is one of the global warming causes. Wrapping up.
The current internal combustion engined cars impact the environment, and EVs are the solution to reducing these emissions. EVs don’t emit any harmful pollutants to the environment like soot, hydrocarbons, lead, ozone, carbon monoxide, or volatile organic compounds. Why purchase an EV. Charging your EV.
Each Nautilus comes with three changeable scent cartridgesMystic Forest, Ozonic Azure and Violet Cashmere. coming soon, Lincoln wants the driver to have a relaxing and invigorating environment at the end of a long, hard day. As part of these events we may be offered free transportation, lodging or meals.
Ozone pollution across the continental United States will become far more difficult to keep in check as temperatures rise, according to new work led by the National Center for Atmospheric Research (NCAR). Ozone formation. Even short periods of unhealthy ozone levels can cause local death rates to rise. Scenario A2 and RCP 8.5.
Fast action on pollutants such as black carbon, ground-level ozone and methane may help limit near term global temperature rise and significantly increase the chances of keeping temperature rise below 2 °C (3.6 °F)—and Extraction and transport of fossil fuel. for 2030 and beyond. Source: UNEP. Click to enlarge.
Neutral richii @ Apr 19th 2009 5:28PM @ everyone, I can see what your trying to say, that without gas powered vehicles that a much larger strain will be put on electrical facilities that also contribute to air pollution and degrade our environment. but its never even been close to the amount of garbage that gas power vehicles produce.
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. Transportation projects. —Akbar et al.
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