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The Asian monsoon circulation provides an effective pathway for pollution from Asia, India, and Indonesia to enter the global stratosphere, according to a new international study led by scientists at the National Center for Atmospheric Research (NCAR) in Boulder, Colo. NCAR scientist William Randel, the lead author.
The California Air Resources Board (CARB) announced that greenhouse gas emissions in California in 2016 fell below 1990 levels for the first time since emissions peaked in 2004—a reduction roughly equivalent to taking 12 million cars off the road or saving 6 billion gallons of gasoline a year.
Panels show (a) PM 2.5 , (b) elemental carbon (EC), (c) NO x , (d) CO, (e) formaldehyde, and (f) sum of target VOCs. They found that the level of emissions of regulated and unregulated pollutants in diesel exhaust depends on fuel, load, engine calibration, and exhaust aftertreatment technology. L/2004 calibration engines.
2010 engines emissions reduction relative to 2010, 2007, and 2004 US emission standards. For a number of the most important pollutants, levels were substantially lower than required by regulations. These reductions came while emissions of fine particles were also 92% lower than the 2010 standard 99% lower than 2004 emissions.
Researchers at Peking University have developed a new methodology to model black carbon (BC) emissions from diesel and gasoline motor vehicles. Black carbon is a key short-lived climate change forcer ( earlier post ) and motor vehicles are important sources of BC in the environment. Credit: ACS, Wang et al. Click to enlarge.
Since MY 2004, fuel economy and CO 2 emissions have improved in eleven out of thirteen years. Since 2004, CO 2 emissions have decreased 23%, or 104 g/mi, and fuel economy has increased 29%, or 5.6 miles per gallon, slightly higher than MY 2016, and a record high overall. Estimated Real-World CO 2 and Fuel Economy. Source: EPA.
This marks Canada’s first regulation of air pollutant emissions from locomotives. CACs include NO x ; particulate matter (PM); hydrocarbons (HC), carbon monoxide (CO); and sulfur oxides (SO x ). 1993–2004. 2002–2004. 1973–1992. 2005–2011. 2012–2014. 2015 or later. Switch locomotive emission standards. 1973–2001.
The measurements provide the most detailed look at carbon emissions for a specific urbanized and industrialized region of China to date. Fuel combustion releases energy by converting carbon to CO 2 , but some is only converted to CO, losing some of the available chemical energy.
A 2004 lifecycle analysis synthesis report prepared by Five Winds International for ConocoPhillips, Sasol Chevron and Shell International Gas concluded that: Total GHG emissions of the GTL system are between 12% less and 11% more than the refinery system, based on varying assumptions and data. Emissions performance of GTL diesel.
Since 2004, SmartWay Partners have avoided emitting more than 72 million metric tons of carbonpollution, while saving more than 170 million barrels of oil and $24.9 billion in fuel costs—equivalent to eliminating annual energy use in over six million homes.
Nanostellar was founded in California in 2004 by scientists from Stanford University and NASA Ames Research Center. Many pollution control and renewable-energy applications require precious metals that are limited—there isn’t enough platinum to supply the millions and millions of automobiles driven in the world. Kyeongjae Cho.
An added benefit of the conversion program is that it not only reduces pollution but also extends the life of the vehicles, helping to eliminate waste production and creating a reduce-and-reuse program. As a result of these efforts, FedEx Express has saved 45 million gallons of fuel or 452,573 metric tons of carbon dioxide emissions.
ORVR systems are carbon canisters installed in vehicles to capture gasoline vapors evacuated from the gasoline tank before they reach the pump nozzle. Vapor emissions from refueling, if allowed to escape, can contribute significantly to ground-level ozone, sometimes called smog, as well as to other types of harmful air pollution.
The project is part of CARB’s Low Carbon Transportation and Fuels Investments and Air Quality Improvement Program. California’s South Coast Air Quality Management District, the San Joaquin Valley Air Pollution Control District and the Sacramento Metropolitan Air Quality Management District also are investing in the project.
Total US greenhouse emissions were 6,673 million metric tons of carbon dioxide equivalent in 2013, an increase of 2% (127.9 By sector, power plants were the largest source of emissions, accounting for 31% of total US greenhouse gas pollution. MMT CO 2 in 2004, and since then have declined about 13%. MMT CO 2 Eq.) Source: EPA.
Over a range of scenarios—including fluctuating gas prices, new battery technologies or high taxes on carbon dioxide emissions—plug-ins with small battery packs are economically competitive with ordinary hybrid and conventional vehicles for drivers who charge frequently.” But batteries are heavy and expensive.
The original 1975 standards applied to hydrocarbons (HC), one of the two most important contributors to smog, and carbon monoxide (CO), a toxic air pollutant. grams per kilometer (g/km) HC+NO x beginning with 2004 models and a Tier II standard of 0.8 g/km HC+NO x , compared to the 2004 Tier I standard of 1.4 g/km to 14.0
The Long Beach, CA-based truck/trailer emits 85% less overall particulate matter and 10% less carbon dioxide than its diesel counterparts. Since 2004, SmartWay Partners have saved 144.3 million metric tons of carbon dioxide; 1,070,000 tons of nitrogen oxides; and 43,000 tons of particulate matter. billion in fuel costs.
million to modify an existing biorefinery to test and optimize the use of non-food woody plant materials to produce low-carbon ethanol, called cellulosic ethanol. The ethanol will be mixed with conventional gasoline for a lower-carbon, less-polluting fuel. World Partners is based in Sacramento County. EdeniQ, Inc. tmdgroup, Inc.
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.
These systems will also need to deliver very low criteria pollutant levels (e.g., Gains in new vehicle fleet economy by OEM, 2004-2009. Ford, however, was starting with the worst 2004 new vehicle fleet fuel economy of any of its major competitors. Various types of lean operation are also being investigated for improved BSFC.
Carbon tax: Californians are more in favor (56% support, 35% oppose) of taxing companies for their emissions but are sharply divided along party lines on this issue as well, with 73% of Democrats in favor and 60% of Republicans opposed. Independents are divided (47% support, 44% oppose).
In an effort to reliably predict efficiency and pollutant emissions for new engines and fuels, computer simulations are used to study fundamental turbulence-chemistry interactions. Low emission, low temperature engine concepts of the future operate in regimes where combustion is poorly understood.
Green areas indicate waters supersaturated with aragonite carbonate and favoring shell formation, with darker color indicating more favorable conditions. However, when CO 2 dissolves in seawater, it forms carbonic acid. Projected spread of acidification of the oceans from 1994 (left) to 2100 (right). Earlier post.).
In addition, a single-walled carbon nanotube (SWCNT) anode technology for possible future use in these batteries was assessed. It assessed three currently manufactured Li-ion battery technologies for EVs and two for a PHEV with a 40-mile all-electric range: lithium-manganese oxide (LiMnO 2 ); lithium-nickel-cobalt-manganese-oxide (LiNi 0.4
Hydrocarbon and carbon monoxide emissions after the oxidation catalyst were very low. Since its founding in 2004, Achates Power has enhanced the compression-ignition OP2S engine and has worked to resolve its challenges: wrist pin and power durability; piston and cylinder thermal management; piston ring integrity; and oil management.
But theyve needed definitive proof that PHEVs wont increase pollution. The main study shows that under all nine scenarios for both rates of market penetration of PHEVs and the evolving power grids characteristics (capacity/carbon intensity), PHEVs will vastly reduce greenhouse gases for the next 40 years. The GREET 1.6
Sign the petition Protect the Arctic National Wildlife Refuge www.sierraclub.org/arctic/ American Lung Association call for better EPA air pollution standards. Romm, 2004 "Out of Gas, The End of the Age of Oil", by David Goodstein, 2004 "Hubbert's Peak: The Impending World Oil Shortage", by Kenneth S.
Power and Associates 2004 report ]. Dont PHEVs just shift pollution from gasoline cars to power plants? But its monumentally less pollution , even on the national (half-coal) grid. At the moment, only 2004-2007 Priuses , and to a limited extent, the Ford Escape/Mercury Mariner Hybrids.
The Earth continues to experience record-breaking temperatures caused by increased atmospheric concentrations of carbon dioxide (CO 2 ) and other greenhouse gases (GHGs). WHY A REDUCTION IN CARBON EMISSIONS SHOULD NOT BE THE FOCUS. Donovan, CEO of Renergie, Inc. That could mean more military involvement and massive disaster relief.
California has made tremendous gains cutting pollution without detrimental economic impacts. But the report authors note that, while California has the second-lowest rate of carbon emissions per capita in the nation, and a carbon intensity relative to GDP that is 54.3% Landfill emissions rise; recycling rates decline.
The current limit values in Mexico are equivalent to Euro IV or EPA 2004 standards. Final adoption of the standard will virtually eliminate fine particle and black carbon emissions from new diesel trucks. Avoided emissions in that year will total 24,000 tons of PM 2.5 , 17,000 tons of black carbon, and 410,000 tons of NO x.
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. Transportation.
trillion Mexican pesos), taking into account the value to society of 55,000 avoided early deaths from air pollution and the reduced climate impact from lower emissions of black carbon. NOM 044 offers manufacturers two compliance pathways, modeled on the US Environmental Protection Agency and the European Union standards.
May, 2007 : An international team of researchers concluded that the ability of the Southern Ocean to absorb carbon dioxide had slowed by about 15% per decade since 1981 ( earlier post ), and projected that at the present rate of deterioration, it will have lost two-thirds of its ability to store carbon by 2050.
Several dozen prototypes on 15-passenger van since 2004; now in second generation development; no production plans. What are we really doing and how big of a carbon footprint are we going to leave with this?" Coal-burning power plants do not lessen the greenhouse gas production and criteria pollutants increase. Kwong asked.
After all, the board’s main function is to regulate smog — not greenhouse gases such as carbon dioxide. The conversion can double or even triple fuel economy, thereby severely limiting carbon dioxide emissions. This high-pollution moment is referred to as a cold start.
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