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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.
Significant climate anomalies 2008/2009. Source: ClimateChange Compendium. The hole in the ozone layer has had a cooling effect on Antarctica, and is partly responsible for masking expected warming on the continent. ClimateChange Science Compendium 2009. Tags: ClimateChange. Earlier post.).
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. The study was published in the journal Atmospheric Environment. Aviation accounts for 3.5% Negative RF (cooling) contributions arise from sulfate aerosol production.
The climatechange benefit is estimated for 2050 and human health and crop benefits are for 2030 and beyond. Black carbon and tropospheric ozone are harmful air pollutants that also contribute to climatechange. Click to enlarge. Both near-term and long-term strategies are essential, the report concludes.
A study led by Norwegian climate center CICERO has found that the global warming effect of leaked hydrogen is almost 12 times stronger than that of CO 2. The open-access paper is published in Nature Communications Earth & Environment. Commun Earth Environ 4, 203 doi: 10.1038/s43247-023-00857-8 —Dr Sand Resources Sand, M.,
have developed a simulator able to predict tropospheric ozone concentrations across the whole of South and East Asia. Tropospheric ozone is the main cause of photochemical smog, an atmospheric pollutant harmful to human health and plant growth. Toyota Motor Corporation (TMC) and Toyota Central R&D Labs.,
The system will graph lifecycle impact for a range of specified powertrains, for a large number of impact categories: Climatechange [kg CO 2 -eq.]. 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.].
Through a recent modeling experiment, a team of NASA-funded researchers have found that future concentrations of carbon dioxide and ozone in the atmosphere and of nitrogen in the soil are likely to have an important but overlooked effect on the cycling of water from sky to land to waterways.
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). The contribution of HFCs to climate forcing is currently less than 1% of all greenhouse gases.
The study will appear next month in the peer-reviewed journal ClimaticChange Letters. Relying more on natural gas would reduce emissions of carbon dioxide, but it would do little to help solve the climate problem. However, the effects of natural gas on climatechange have been difficult to calculate.
Maersk Container Industry (MCI) is calling for tougher enforcement of European environmental legislation designed to protect the Earth’s ozone layer and help prevent climatechange. This would benefit the environment, and it would help European innovation and environmental investments pay off.
Although it does not solve the root of the climatechange problem—substantial reductions in CO 2 and other climate forcers are essential for that—urban albedo can delay the onset of more severe climate impacts, and reduce the risk of passing the thresholds for abrupt and irreversible climatechanges.
India’s Minister of Environment, Jairam Ramesh, hosted US Deputy Assistant Secretary of State for Environment, Daniel A. HFCs are chemicals are potential substitutes for ozone-depleting and climate-warming CFCs and HCFCs currently being phased out under the Montreal Protocol treaty to protect the ozone layer.
A new report from the European Environment Agency (EEA) warns that the health of Europe’s most vulnerable citizens remains disproportionately affected by environmental hazards such as air and noise pollution and extreme temperatures, especially in Europe’s eastern and southern regions, despite overall improvements in Europe’s environmental quality.
US Congressman Scott Peters (CA-52) introduced the Super Pollutant Emissions Reduction Act (SUPER Act) of 2013, legislation aimed at combating short-lived climate pollutants, which are only somewhat addressed by disparate government programs. C in projected cumulative warming by 2050 and 1.1 °C
A side event organized by the International Nitrogen Initiative (INI) at the COP-15 United Nations ClimateChange Conference in Copenhagen will highlight nitrogen’s role in climatechange. Nitrogen and climate interactions are not yet adequately included in the Intergovernmental Panel on ClimateChange assessment process.
Air travel results in a lower temperature change per passenger-kilometer than car travel on the long run; the integrated radiative forcing of air travel is on short- to medium time horizons much higher than for car travel. Per passenger-hour traveled however, aviations climate impact is a factor 6 to 47 higher than the impact from car travel.
That’s three times the amount estimated by the Intergovernmental Panel on ClimateChange (IPCC). Nitrous oxide is a potent greenhouse gas that contributes to climatechange and stratospheric ozone destruction.
NSF said that is chose a time span of several decades because within this timeframe modeled climatechange responses appear to be insensitive to CO 2 forcing scenarios. The nonlinear nature of these interactions greatly increases the complexity of the problem. Awards are expected to be in the range of $300,000 to $1,000,000 per year.
The US Environmental Protection Agency (EPA) has submitted its final Report to Congress on Black Carbon , in response to an October 2009 request from Congress to advance efforts to understand the role of black carbon (BC) in climatechange. Earlier post.). This GHG effect warms the Earth’s surface and the lower atmosphere.
in 2018 (2000-2018 average year-over-year increase is 6.8%), continuing the increasing trend as they replace Ozone Depleting Substances (ODS) being phased out under the 1987 Montreal Protocol. Because of the enormous potential impact of these products, reducing their emissions has a disproportionate benefit to the environment.
Researchers at the Universities of Cambridge and Leeds have developed an innovative new method for measuring ozone layer depletion. The post University of Cambridge designs new method to measure ozone depletion appeared first on Innovation News Network.
The transport and transformation of plumes from selected European and Asian major population centers (MPCs) will now be investigated with special focus on the rate of formation of ozone and aerosols. A total of approximately 100 flight hours are planned for the measurement flights in the emission plumes of Asian cities, said John P.
Two maps compare total annual sulfur dioxide amounts for India and China during 2005 (left) and 2016 based on Ozone Monitoring Instrument measurements. Illustration: Chris McLinden, Environment and ClimateChange Canada. They also cannot account for changing conditions or unforeseen policies. Click to enlarge.
The study by Nadine Unger, Drew Shindell and James Wang will appear in an upcoming issue of the journal Atmospheric Environment. The study applied the NASA Goddard Institute for Space Studies (GISS) model for Physical Understanding of Composition-Climate INteractions and Impacts (G-PUCCINI). Environ. , Environ. ,
Respectively, Title IV of the 1990 Clean Air Act and the Ozone Transport 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. —Taylor 2012.
Pål Börjesson, researcher in Environment and Energy Systems at Lund University. Rapid and significant increases in production of biofuels from food crops could result in negative indirect land use changes, he said. Direct and indirect land use changes were also studied. There is a limit, but we are not there yet. ”.
R134a replaced CFC-12 as the MAC refrigerant in the early 1990s due to the negative impact of CFCs on the Earth’s ozone layer. With its GWP of 1, it is also the refrigerant that has the least impact on climate. It has a high cooling capacity and is available worldwide at low cost in the required qualities.
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. Chairman Henry A. Waxman of the Energy and Commerce Committee and Chairman Edward J.
A separate Emissions Gap Report by UN Environment, to be released today, tracks the policy commitments made by countries to reduce greenhouse gas emissions and analyses how these policies will translate into emissions reductions through 2030, clearly outlining the emissions gap and what it would take to bridge it. parts per billion.
The leaders of the world have just returned from the UN's latest climatechange summit, COP26 , in which the countries that have signed on to the Paris Agreement upped their commitments to fight climatechange. IEEE Spectrum : What role does Silver Lining play in climate research or advocacy? In 2015, the U.S.
SOAs are tiny particles that are formed in air and make up typically 40% to 60% of the aerosol mass in urban environments. Organic aerosol (OA) in the atmosphere is detrimental to human health and represents a highly uncertain forcing of climatechange.
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).
As we confront the enormous challenge of climatechange, we should take inspiration from even the most unlikely sources. 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.
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. The area stood to lose billions of dollars of federal funding for a wide variety of projects if the areas air quality didnt improve.
Eliza Strickland: Man-made climatechange is already reshaping our planet, and carbon emissions aren’t coming down fast enough to stave off real disaster in the decades to come. It’s often called geoengineering in the popular press, but the preferred term is climate intervention. Transcript. So it’s been observed before.
Global warming plays a role in thinning the ozone layer, thus permitting harmful rays’ penetration to the earth. EST was mandated to create a conducive environment for sustainable energy use. Address climate emergency- the climate is changing rapidly.
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.
The climatechange benefit is estimated for a given year (2050) and human health and crop benefits are. 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
A new study led by researchers from Northwestern University projects that if electric vehicles replaced 25% of combustion engine cars currently on the road, the United States would save approximately $17 billion annually by avoiding damages from climatechange and air pollution.
What I do know, is how fossil fuel vehicles have contributed heavily to poor air quality in our towns and cities, damage to the environment, soil and water quality and have contributed to the depletion of the ozone layer! On a serious note, I wanted something spacious, safe, fast and better for the environment.
In a new study published online 10 March in the ACS journal Environmental Science and Technology , however, Stanford University professor Mark Jacobson finds that local CO 2 emissions in isolation may increase local ozone and particulate matter. Although the health impacts of such changes are uncertain, he notes, they are of concern.
New WHO has issued new Global Air Quality Guidelines (AQGs) that reduce levels of key air pollutants, some of which also contribute to climatechange. When action is taken on these classical pollutants—particulate matter (PM), ozone (O?), and PM 10 ), ozone, nitrogen dioxide, sulfur dioxide and carbon monoxide.
Global benefits from full implementation of measures for reduction of short-lived climate pollutants in 2030 compared to the reference scenario. The climatechange benefit is estimated for a given year (2050) and human health and crop benefits are. for 2030 and beyond. Source: UNEP. Click to enlarge. Earlier post.).
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