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
A study by a pair of researchers at Northwestern University found that when fuel prices drove residents of São Paulo, Brazil, to switch from ethanol to gasoline in their flexible-fuel vehicles, local ozone levels dropped 20%. Ozone levels are relatively high in São Paulo, with hourly concentrations above 75 and 125 µg m ?3
Ozone levels across much of North America and Europe dropped significantly between 2000 and 2014. People living in parts of southern Europe, South Korea and southern Japan and China also experienced more than 15 days a year of ozone levels above 70 ppb. Source: University of Leicester. Click to enlarge.
A study by an international team led by scientists at the University of East Anglia have identified four new man-made gases in the atmosphere, all of which are contributing to the destruction of the ozone layer. CFCs are the main cause of the hole in the ozone layer over Antarctica. Brenninkmeijer, Paul J. Oram, Claire E.
Ozone, the main component of smog, is a plant-damaging pollutant formed by emissions from vehicles, cooking stoves and other sources. New research shows that ozone pollution damaged millions of tons of wheat, rice, soybean and cotton crops in India in 2005. Surface ozone pollution in India damaged 6 million metric tons (6.7
In China, people breathe ozone-laden air two to six times more often than people in the United States, Europe, Japan, or South Korea, according to a new international study published in Environmental Science & Technology Letters. 2017 for one ozone metric. 2014) are included. 2017 are included.
The California Air Resources Board is accepting applications for the 2014 Haagen-Smit Clean Air Awards. The 2014 Haagen-Smit Clean Air Awards nomination period is between1 Oct. 2014, and 1 Dec.2014. Past Winners of the Haagen-Smit Clean Air Award.
Emissions of one of the chemicals most responsible for the Antarctic ozone hole are on the rise, despite an international treaty that required an end to its production in 2010, a new study by researchers at NOAA and their colleagues shows. —NOAA scientist Stephen Montzka, lead author of the paper.
The first peer-reviewed study to directly quantify how emissions from oil and natural gas (O&NG) activities influence summertime tropospheric ozone (O 3 ) pollution in the Colorado Front Range confirms that chemical vapors from oil and gas activities are a significant contributor to the region’s chronic ozone problem.
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.
related damages, researchers from Carnegie Mellon University and Stanford have found that, US-economy-wide, gross external damage (GED) due to premature mortality has decreased by more than 20% from 2008 to 2014. GED was calculated for the 3 most recent NEI years: 2008, 2011, and 2014. In a new study of PM 2.5 Tschofen et al.
The San Joaquin Valley has been attainment for Carbon Monoxide (CO) since 1994, reached attainment for the federal PM 10 standard in 2008, and demonstrated attainment of the federal 1-hour ozone standard in 2014. The District is currently working on reaching attainment for the federal 8-hour ozone and PM 2.5 standards.
The purpose of the federal RFG program is to improve air quality in certain areas through the use of gasoline that is reformulated to reduce motor vehicle emissions that lead to the formation of ground-level ozone. States which are designated by EPA as part of the Ozone Transport Region, such as Maine, can “opt-in” to the program.
By 2014, the rule and other state and EPA actions will reduce SO 2 emissions by 73% from 2005 levels. reductions; annual NO x reductions; and ozone-season NO x. Ozone Season NO x Power Plant Emissions. The benefits outweigh the $800 million projected to be spent annually on this rule in 2014 and the roughly $1.6
NO x emissions are important because of their role in the formation of ozone and secondary PM. Ozone and PM contribute to significant respiratory and public health problems. All work must be completed by 30 June 2014. Locomotives as a source category are ranked 6 th for the levels of contribution to California NO x emissions.
The plant will start production in the first quarter of 2014. In addition, the plant will house a regional sample laboratory and a production line for BASF’s Premair-branded ozone destruction catalysts for automotive applications.
ska facility are Selective Catalytic Reduction (SCR) systems; advanced SCR on Filter (SCRoF) solutions; and PremAir-branded ozone destruction catalysts for automotive applications. The plant began production trials in April 2014, and last month started up two emissions catalysts manufacturing lines, with an initial employee base of 100.
million of Fiscal Year 2013 funds ( FTA-2014-001-TRI ) for the deployment of low- or no-emission (LoNo) transit buses. An Eligible Area for the awards is either: Designated as a non-attainment area for ozone or carbon monoxide under section 107(d) of the Clean Air Act (42 U.S.C. Of that amount, $21.6 7407(d)); or.
Ethane reacts with sunlight and other molecules in the atmosphere to form ozone, which at the surface can cause respiratory problems, eye irritation and other ailments and damage crops. Between 2005 and 2014, the Bakken’s oil production jumped by a factor of 3,500, and its gas production by 180.
lower ozone formation potential of the carbonyl compounds present than DF under the identical operating conditions. Bin Hao, Chonglin Song, Gang Lv, Bo Li, Xiaofang Liu, Kan Wang, Yaowu Liu (2014) “Evaluation of the reduction in carbonyl emissions from a diesel engine using Fischer–Tropsch fuel synthesized from coal,” Fuel Vol.
The First Update will be presented to the Board on 22 May 2014 for consideration for approval. Achieving our long-term climate goal and 2032 ozone standards will require a much deeper penetration of ZEVs into the fleet. The Air Resources Board is required to update the Scoping Plan every five years.
As with its predecessor legislation, the MAP-21 provides funding to areas in non-attainment or maintenance for ozone, carbon monoxide, and/or particulate matter. billion in CMAQ funding for each year of the authorization-2013 and 2014. The MAP-21 provides just over $2.2
Chlorofluorocarbons (CFCs)—commonly used in refrigerators and air conditioners—play a role in creating a hole in the ozone layer over Antarctica. 2014), Recent and future trends in synthetic greenhouse gas radiative forcing, Geophys. —Ronald Prinn. Rigby, M., 41, doi: 10.1002/2013GL059099.
In 2011, 231 counties in the US exceeded the EPA’s regulatory standards for ozone, the main component of smog. Selin (2014) “A systems approach to evaluating the air quality co-benefits of US carbon policies” Nature Climate Change doi: 10.1038/nclimate2342. 14, 969–978 doi: 10.5194/acp-14-969-2014. Saari & Noelle E.
The US Army Corps of Engineers estimates that, as of 2014, there were approximately 9,000 Category 1 and 2 marine vessels operating on US waters. The EPA estimates that, as of 2014, 81% of Category 1 and 2 workboats used older, uncontrolled or Tier 1 diesel engines, which are 10 times higher in emissions than a modern Tier 4 diesel engine.
Short-lived climate pollutants (SLCPs) include methane, tropospheric ozone, black carbon, and fluorinated gases. They are powerful climate forcers that remain in the atmosphere for a much shorter period of time than carbon dioxide. Their global warming potential (GWP) can be tens to thousands of times greater than that of carbon dioxide.
The cap then declines about 2% in 2014 and then about 3% annually from 2015 to 2020. To ensure a gradual transition, ARB will provide the majority of allowances to all industrial sources during the initial period (2013-2014), using a calculation that rewards the most efficient companies. business-as-usual.
Specifically, the proposed rule updates the current prohibition under section 608 of the Clean Air Act against knowingly venting, releasing or disposing of ozone-depleting (ODS) and substitute refrigerants and extends the requirements, as appropriate, to non-ozone-depleting substitute refrigerants, such as hydrofluorocarbons (HFCs).
We estimate ozone and SOA formation potential. For the study, the team collected data from 82 light-duty gasoline vehicles spanning a wide range of model years (1988−2014); vehicle types (passenger cars and light-duty trucks); engine technologies (GDI and PFI); emission certification standards (Tier1 to SULEV), and manufacturers.
To ensure a gradual transition, ARB says it will provide significant free allowances to all industrial sources during the initial period (2012-2014). Companies that need additional allowances to cover their emissions can purchase them at regular quarterly auctions ARB will conduct, or buy them on the market.
Bingbing Li, Xianfeng Gao, Jianyang Li, and Chris Yuan (2014) “Life Cycle Environmental Impact of High-Capacity Lithium Ion Battery with Silicon Nanowires Anode for Electric Vehicles,” Environmental Science & Technology doi: 10.1021/es4037786. —Li et al.
Air emissions from the natural gas life cycle include greenhouse gases, ozone precursors (volatile organic compounds and nitrogen oxides), air toxics, and particulates. Jackson (2014) “Air Impacts of Increased Natural Gas Acquisition, Processing, and Use: A Critical Review,” Environmental Science & Technology doi: 10.1021/es4053472.
billion people (54%) in 2014, live in urban areas, with an additional 2.5 Transportation is one of the largest contributors to urban air pollution for pollutants such as carbon monoxide, nitrogen oxides, benzene, ozone, and fine particulate matter (PM 2.5 ). More than half of the world population, 3.9 is attributable to motor vehicles.
Up to $23,658,000 is available for this project from FY 2014-15 funds. microns or less (PM 2.5 ); and NO x emissions that lead to ozone and secondary PM. The California Air Resources Board (ARB) announced a grant solicitation for Zero-Emission Truck and Bus Pilot Commercial Deployment Projects. emissions, and 5% of GHG emissions.
The majority of California residents live in areas that do not meet permissible air quality levels for regulated air pollutants—mostly due to exceedances in atmospheric concentrations of ozone and particulate matter. New NMOG + NO x standard.
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 Chart: MECA.
In order to achieve the 2008 Ozone National Ambient Air Quality Standards set by US EPA, CARB estimates that the South Coast Air Basin alone (including Los Angeles) will need an 80% reduction in NO x emissions by 2031. Truck sales were up in model years 2014 and 2015, the years covered under the first round of truck standards.
Google Street View cars can be equipped with Aclima’s mobile sensing platform to measure nitrogen dioxide; nitric oxide; ozone; carbon monoxide; carbon dioxide; methane; black carbon; particulate matter; and Volatile Organic Compounds (VOCs).
For light-duty vehicles, EPA is proposing non-methane organic gases (NMOG) plus nitrogen oxides (NO x ) standards that would phase-down to a fleet average level of 12 mg/mi by MY 2032, representing a 60% reduction from the existing 30 mg/mi standards for MY 2025 established in the Tier 3 rule in 2014.
NO x helps create ground-level ozone, or smog. Other sources of diesel particulate matter such as big rig trucks, transit buses, trash trucks, cargo-handling equipment and ship auxiliary engines have already been addressed through regulations, along with diesel fuel.
The Haifa region began air quality monitoring some 30 years ago; the metropolitan area now has the densest air quality monitoring network in Israel with 27 continuous monitoring stations that measure criteria pollutants including sulfur oxides, nitrogen oxides, ozone, particulates and more. emissions in the region.
MARPOL Annex VI sets limits on NO x and SO x emissions from ship exhaust, and prohibits deliberate emissions of ozone-depleting substances. Most recently MARPOL was amended through the “1997 Protocol,” which added Annex VI, Regulations for the Prevention of Air Pollution from Ships. Earlier post.).
Also, Senate Bill 605 (Lara, 2014) requires ARB to develop a plan to reduce emissions of SLCPs, while SB 1383 requires the Board to complete and approve the plan by 1 January 2018. Since then Governor Brown signed SB 32 (Pavley), codifying a reductions target for statewide GHG emissions of 40 percent below 1990 emission levels by 2030.
A 2014 study by Weinbruch et al. Specifically, they proposed a method to assess the contribution of EVs to urban air quality in Belgium, compared to conventional vehicles of the same weight class; they modeled the effect on human toxicity (HT), photochemical ozone formation (POF) and particulate matter formation (PMF). Gehring, R.,
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