This site uses cookies to improve your experience. To help us insure we adhere to various privacy regulations, please select your country/region of residence. If you do not select a country, we will assume you are from the United States. Select your Cookie Settings or view our Privacy Policy and Terms of Use.
Cookie Settings
Cookies and similar technologies are used on this website for proper function of the website, for tracking performance analytics and for marketing purposes. We and some of our third-party providers may use cookie data for various purposes. Please review the cookie settings below and choose your preference.
Used for the proper function of the website
Used for monitoring website traffic and interactions
Cookie Settings
Cookies and similar technologies are used on this website for proper function of the website, for tracking performance analytics and for marketing purposes. We and some of our third-party providers may use cookie data for various purposes. Please review the cookie settings below and choose your preference.
Strictly Necessary: Used for the proper function of the website
Performance/Analytics: Used for monitoring website traffic and interactions
Reducing emissions of black carbon soot and ground-level ozone would quickly make a considerable dent in the climatechange problem and would also contribute to public health and protect crop yields, according to an essay in the September/October issue of Foreign Affairs. Besides a danger to breathe, ozone lowers crop yields.
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.
Illustration of projected ozonechanges in the South Coast region due to climatechange in 2050. Areas in orange and red could see ozone concentrations elevated by 9 to 18 parts per billion. Our study reveals that climatechange and regional air pollution are intertwined problems. Click to enlarge.
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.
used a climate model to analyze the effects of a wide range of chemical species, including carbon dioxide, nitrous oxide, methane, organic carbon, black carbon, nitrate, sulfate, and ozone, from 13 sectors of the economy from 2000 to 2100. Targeting on-road transportation is a win-win-win. Unger et al.
Schematic diagram of the trade-offs between the implications for regional air quality and global climatechange of new policies for management of the atmosphere. The complex roles that ozone and aerosols play in the atmosphere provide examples of such trade-offs. Source: NOAA. Click to enlarge.
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.
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
It makes an important contribution to the scientific understanding we have of the role of aviation for climatechange—an understanding decision-makers and politicians may need on the way to achieving the goals of the Paris Agreement. This new study is based on a thorough review of a decade of research on aviation emissions.
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.
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 final version of the proposed First Update to the ClimateChange Scoping Plan (First Update). Achieving our long-term climate goal and 2032 ozone standards will require a much deeper penetration of ZEVs into the fleet. The California Air Resources Board (ARB) has released. The draft version was released in February.
Rather, it is the leaking of hydrogen from production, transportation and usage that adds to global warming. Hydrogen is not a greenhouse gas, but its chemical reactions in the atmosphere affect greenhouse gases such as methane, ozone, and stratospheric water vapor. Sand et al. Hydrogen interacts with various biogeochemical processes.
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. degrees Celsius.
Currently, anthropogenic N 2 O emissions represent the largest contribution to ozone depletion. The study, published online 27 August in the journal Science , for the first time evaluated nitrous oxide emissions from human activities in terms of their potential impact on Earth’s ozone layer. Source: Ravishankara et al. TgCO 2 e, 9.7%).
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.
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.]. The top sample above shows climatechange impact; the subsequent chart shows human toxicity. —Romain Sacchi.
CSIRO scientists have developed a new way to account for ozone in computer simulations of the climate. This latest modeling shows that the oceans take much less ozone out of the atmosphere than previously thought. Ozone (O 3 ) is formed by reactions of chemicals such as nitrogen oxides and volatile organic compounds—i.e.,
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. And SuPoTec causes no harm to the Earth’s ozone layer, unlike HCFC141b. Nymand, CEO for Maersk Container Industry.
Aviation climatechange impacts pathway. An an example, they point out that an SPK fuel option with zero life cycle GHG emissions would offer a 100% reduction in GHG emissions but only a 48% reduction in actual climate impact using a 100-year time window and the nominal climate modeling assumptions in the paper.
The transportation sector remains the largest source of GHG emissions in the state, and saw a 1% increase in emissions in 2017. Transportation sector emission sources include combustion of fuels utilized in-state that are used by on-road and off-road vehicles, aviation, rail, and water-borne vehicles, as well as a few other smaller sources.
The studies use case studies to demonstrate the co-benefits of tackling climatechange in four sectors: electricity generation, household energy use, transportation, and food and agriculture. Climatechange threatens us all, but its impact will likely be greatest on the poorest communities in every country.
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). Passenger travel with rail, coach or two- and three-wheelers has on average the lowest specific climate impact also on short time horizons.
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.
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. However, the underlying estimates do not take into account economic benefits of reduced climatechange.
The program will cover the major sources of GHG emissions in the State, including refineries and power plants, industrial facilities, and transportation fuels. These protocols are based on those initially developed by the Climate Action Reserve (CAR) and its predecessor, the California Climate Action Registry (CCAR).
The on-road transportation (ORT) and power generation (PG) sectors are major contributors to CO 2 emissions and a host of short-lived radiatively-active air pollutants, including tropospheric ozone and fine aerosol particles, that exert complex influences on global climate. Tags: ClimateChange Emissions.
The BAU scenario assumes no further implementing legislation to prevent additional climatechange and growing air pollution, other than what is in place for the base year 2005. Northern India and the Arabian Gulf region, on the other hand, will suffer a marked increase in ozone levels.
Selin and colleagues compared the health benefits to the economic costs of three climate policies: a clean-energy standard, a transportation policy, and a cap-and-trade program. The researchers found that savings from avoided health problems could recoup 26% of the cost to implement a transportation policy, but up to to 10.5
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
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).
million program that Governor Schwarzenegger approved in 2007 to spur technological innovation in the transportation sector. Cars and trucks account for over half of the emissions that contribute to ozone and particulate matter as well as about 30% of the total greenhouse gas emissions in California.
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.
Sustainable Communities : The Sustainable Communities and Climate Protection Act of 2008 (SB 375) directs California’s metropolitan planning organizations to develop sustainable communities strategies that meet regional greenhouse gas reduction targets through integrated land use, housing and transportation planning.
Funding priorities through the ARFVT Program support fuel and vehicle development to help attain the state’s climatechange policies. Currently, the state’s transportation sector accounts for nearly 40% of the state''s greenhouse gas emissions; more than 95% of all transportation energy consumed in California is petroleum-based.
SOAS objectives include the direct quantification of VOC, ozone and NO x surface fluxes and the reconciliation of differences with “blank-down” emission estimates. It seeks a better understanding of HO x /NO x /ozone/organics/aerosol distributions, sources and sinks. What are the climate-relevant properties of aerosol in the SE US?
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.
When the nation addresses the growing danger of climatechange, as I believe it must and will, California’s climate plan will serve as the model for a national program. the second, starting in 2015, brings in distributors of transportation fuels, natural gas and other fuels. —ARB Chairman Mary D. business-as-usual.
The damages the committee was able to quantify were an estimated $120 billion in the US in 2005, a number that reflects primarily health damages from air pollution associated with electricity generation and motor vehicle transportation. Transportation, which today relies almost exclusively on oil, accounts for nearly 30% of US energy demand.
The figure includes the direct effects and those indirect effects due to the production of tropospheric ozone and stratospheric water vapor.) ClimateChange Emissions Natural Gas' Methane is more than 20 times as effective as CO 2 at trapping heat in the atmosphere—i.e., a global warming potential of 21.
The regulation will cover 360 businesses representing 600 facilities and is divided into two broad phases: an initial phase beginning in 2012 that will include all major industrial sources along with utilities; and, a second phase that starts in 2015 and brings in distributors of transportation fuels, natural gas and other fuels.
Respectively, Title IV of the 1990 Clean Air Act and the OzoneTransport Commission/NO x Budget Program.). —Taylor 2012. Margaret R. Taylor (2012) Innovation under cap-and-trade programs, PNAS doi: 10.1073/pnas.1113462109. 1113462109.
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. Transportation Efficiency.
While it contains a great deal of hydrogen, it is less expensive and less flammable than pure hydrogen, making it safer to transport. So far, ammonia has been considered as a fuel when blended with gasoline, diesel, hydrogen and methane fuels to reduce the proportion of carbon-based fuels and their emissions that contribute to climatechange.
We organize all of the trending information in your field so you don't have to. Join 5,000+ users and stay up to date on the latest articles your peers are reading.
You know about us, now we want to get to know you!
Let's personalize your content
Let's get even more personalized
We recognize your account from another site in our network, please click 'Send Email' below to continue with verifying your account and setting a password.
Let's personalize your content