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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. Click to enlarge. °C (within a likely range of 0.2-0.7
At 2:56 AM PST today, NASA’s Orbiting Carbon Observatory 2 (OCO-2) was successfully launched into orbit from Space Complex 2 West at California’s Vandenberg Air Force Base, riding on a two-stage Delta II 7320-10 launch vehicle. by Jack Rosebro. This measurement is unique like a fingerprint, and can be used for identification.
El-Hannouny’s research is funded by two different DOE offices in the Office of Energy Efficiency and Renewable Energy (EERE). The first is the Vehicle Technologies Office (VTO), which aims to advance combustion engine technology and simultaneously reduce criteria emissions, such as carbon monoxide, nitrogen oxides and ozone.
Renault’s comparison of the carbon footprint of EV and ICE vehicles over production, operation and end of life. Photochemical Ozone Creation Potential (kg Ethene equivalent). Quantifies the production of pollutant ozone (? to ozone layer), the results of the reaction of sunlight on NO x and volatile organic compounds.
The battery systems were investigated with a functional unit based on energy storage, and environmental impacts were analyzed using midpoint indicators. Except for ozone depletion potential, the NiMH battery performs significantly worse than the two Li-ion batteries for all impact categories. —Majeau-Bettez et al.
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 US, Canada, and Mexico have submitted a proposal to strengthen climate protection under the Montreal Protocol— the international treaty that phases out the production of a number of substances responsible for ozone depletion. Uncontrolled growth of HFCs will offset the benefits of reducing carbon dioxide. Source: IGSD.
The human health benefits associated with improvements in air quality related to the reduction in greenhouse gas emissions improvements can offset 26–1,050% of the cost of US carbon policies, depending upon the type of policy, according to a new study by a team from MIT. Carbon-reduction policies significantly improve air quality.
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 climate change. —Report to Congress on Black Carbon. Source: EPA. Click to enlarge. Earlier post.).
Of our "alternative fuel" options, only electricity can truly be made renewably (wind, solar, geothermal, small hydro), with no carbon or other noxious emissions. We need to prioritize clean electricity generation and plug-in battery cars to utilize that energy efficiently. And only electric drive cars can operate truly zero-emission.
Among the findings: Summer surface ozone (O 3 ) decreases in most locations due to widespread reductions of traffic NO x emissions. Across scenarios, we found the more cars that transitioned to electric power, the better for summertime ozone levels. Locations with clean energy sources, however, saw reductions. Jordan L.
These emissions are independent of the vehicle energy/propulsion system and therefore applicable to all road vehicle types including those with battery-electric powertrains. —Cliff et al. While some VOCs are released in exhaust, others may arise from an unexpected source—e.g.,
The main purpose of the LoNo Program is to deploy the cleanest and most energy efficient US-made transit buses that have been largely proven in testing and demonstrations but are not yet widely deployed in transit fleets. A maintenance area, as defined in section 5303, for ozone or carbon monoxide. 7407(d)); or.
Relying more on natural gas would reduce emissions of carbon dioxide, but it would do little to help solve the climate problem. The burning of coal releases more carbon dioxide than other fossil fuels, as well as comparatively high levels of other pollutants, including sulfur dioxide, nitrogen oxides, and particles such as ash.
Led by the tiny Pacific island of the Federated States of Micronesia, a growing group of low-lying islands and other vulnerable countries are calling for fast action on the approximately 50% of global warming that is caused by pollutants other than carbon dioxide (CO 2 ). million lives lost each year due to black carbon soot.
The California Energy Commission unanimously adopted the 2013-2014 Investment Plan Update to support the development and use of green vehicles and alternative fuels. 20 million for hydrogen fueling infrastructure. 20 million for hydrogen fueling infrastructure.
According to a new study led by a team at Duke University, airborne particulate matter and dust are cutting solar photovoltaic energy output by more than 25% in certain parts of the world, with roughly equal contributions from ambient PM and PM deposited on photovoltaic surfaces. —Michael Bergin.
Waxman of the Energy and Commerce Committee and Chairman Edward J. 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.
Ozonolysis—the cleavage of carbon-carbon double bonds through reaction with ozone—is a reaction that plays a key role in a number of fields, including synthetic chemistry and tropospheric removal of unsaturated hydrocarbons. —Welz et al. In a commentary accompanying the main paper by Welz et al. ,
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. Error bar shows regional variations for E85. GW = global warming; Eut. Credit: ACS, Yang et al. Click to enlarge.
Source: “Hidden Costs of Energy”. Because these effects are not reflected in energy prices, government, businesses and consumers may not realize the full impact of their choices. Source: “Hidden Costs of Energy”. Transportation, which today relies almost exclusively on oil, accounts for nearly 30% of US energy demand.
Sharkey’s research team already has measured rates of isoprene emission from plants that are used by the Environmental Protection Agency to predict lower-atmosphere ozone levels. Ultimately, he hopes this innovative process would take in carbon dioxide and discharge bio-isoprene using only sunlight as an energy source.
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
million from FTA’s Transit Investment in Greenhouse Gas and Energy Reduction (TIGGER) III Program. TIGGER III grants, which will also use a competitive selection process, will be awarded based on a project’s ability to reduce energy consumption and greenhouse gas emissions and provide a return on the investment.
The emission scenario assumes that population and economic growth largely determine energy and food consumption and consequent pollution sources with the current technologies (“business as usual”). Northern India and the Arabian Gulf region, on the other hand, will suffer a marked increase in ozone levels.
As part of a US Department of Energy sponsored effort, local fleets will replace existing diesel delivery vehicles with all-electric medium- and heavy-duty Smith Newton trucks for daily operations in the Houston-Galveston area. The project will have additional impact with an expected reduction in GHG emissions by 37.5
million US Department of Energy (DOE) grant to demonstrate a pre-production Renewable Natural Gas (RNG) hybrid 4,300 hp line-haul locomotive. All will have zero NO x /PM emissions with carbon-neutral emissions by consuming an RNG/CNG mixture. g/bhp-hr of NOx, a reduction of 400 times.
Increased use of natural gas as a transportation fuel diversifies Colorado’s portfolio, supports locally produced energy, improves air quality and can save money through lower fuel costs. The funds will provide for the statewide construction of compressed natural gas fueling stations and the purchase of natural gas vehicles (NGV).
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.
The study, carried out through a partnership with EPA, the US Department of Energy, the Li-ion battery industry, and academicians, was the first life-cycle assessment to bring together and to use data directly provided by Li-ion battery suppliers, manufacturers, and recyclers. times as much primary energy as the other two active materials.
CARB also adopted a new plan to curb destructive “super pollutants” including black carbon, fluorinated gases and methane. Approximately 70% of the reductions needed to meet the ozone standard in the South Coast in 2031 would come from existing or proposed regulatory actions. emissions by more than 20%. emissions by more than 20%.
The downward emission trend of three main pollutants which cause ground-level ozone continued in 2007: carbon monoxide (CO) fell by 57%, non-methane volatile organic compounds (NMVOCs) were down by 47% and nitrogen oxides (NO x ) have dropped 36%. EU-27 emissions of all four pollutants were lower in 2007 than in 2006.
The study found that 60% of the winter primary hydrocarbon hydroxyl radical reactivity in London is from those diesel-related hydrocarbons; the authors predicted that the longer-chain HCs contribute up to 50 % of the ozone production potential in London. —Dunmore et al. Dunmore et al. Dunmore et al.
Emissions of carbon monoxide and hydrocarbons were also significantly below required 2010 levels: 97% and more than 99.9%, respectively. The study, the Phase 2 Report of the comprehensive Advanced Collaborative Emissions Study (ACES).
The cap-and-trade program also works in concert with other measures, such as standards for cleaner vehicles, low-carbon fuels, renewable electricity and energy efficiency, and complements and supports California’s existing efforts to reduce smog-forming and toxic air pollutants. Covered entities must reduce emissions or.
Energy consumption and GHG emissions per PKT (passenger kilometer travelled). Mikhail Chester and Arpad Horvath inventoried on-road, rail, and air travel to determine energy consumption, greenhouse gas (GHG) emissions, and criteria air pollutant (CAP) emissions (excluding PM, lead, and ozone due to lack of data).
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. HFC-152a, HFO-1234yf, and carbon dioxide are alternatives that may substantially reduce climate impacts and meet safety standards.A transition to a new refrigerant is not easy. Mahmoud Ghodbane, Timothy D.
The finding helps advance research into ammonia as an alternative to carbon-based fuels for cars, airplanes, and power generation facilities. Nitric oxide is known to be harmful to human health, contributes to ozone depletion, and when it reacts with other compounds, contributes to acid rain and atmospheric warming.
The cap-and-trade joins a suite of other major climate program measures including standards for ultra-clean cars (Advanced Clean Cars, earlier post ), low-carbon fuels (Low Carbon Fuel Standard, earlier post ) and renewable electricity. the destruction of existing stores of ozone-depleting substances in the U.S.
The largest impact from the battery use stage is mainly from the primary energy consumption (2.94 × 10 5 MJ) during the 10-year service life of the EV. The largest impact from the battery use stage is mainly from the primary energy consumption (2.94 × 10 5 MJ) during the 10-year service life of the EV. —Li et al.
Here, RME show advantages for primary energy and GHG, but disadvantages in terms of acidification, eutrophication and ozone depletion. Increased eutrophication is a key characteristic of biofuels from energy crops when compared with fossil fuels. This is mainly as a result of carbon releases from the soils and land.
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. A2L and A2 are safety classifications.
This massive alteration of the nitrogen cycle affects climate, food security, energy security, human health and ecosystem health. On a planetary scale, human activities, especially fertilizer application, have more than doubled the amount of reactive nitrogen in circulation on land. Earlier post.). Earlier post.).
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. Unger et al. Click to enlarge. Unger et al. Nadine Unger, Drew T.
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