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
US EPA Region 9 8-hour ozone trends, 1979-2000. These State Implementation Plans (SIPs) are the roadmaps to meeting the 1997 8-hour ozone National Ambient Air Quality Standards (NAAQS) of 0.08 In 1997, EPA first established the 8-hour ozone standard, which replaced the older 1-hour ozone standard (0.12 Source: EPA.
While that report projected vessel activity, it did not explore the environmental impacts of increased shipping in terms of air emissions or the potential climate impacts from increases in short-lived climate pollutants such as black carbon. Click to enlarge. ships diverting from prior routes to Arctic routes. Regulatory background.
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. Benjamin Felzer, Lehigh University.
As California continues to reduce local sources of ozone, ozone entering the state from the Pacific makes up a larger fraction of measured ozone levels. An ozonesonde is a balloon which measures ozone from the surface to more than 10 kilometers above the ground.
Data collected during a major 2010 state-federal atmospheric research project show that the first-in-the-nation regulation requiring ocean-going vessels to use clean fuel when near the California coast has been extremely effective in reducing sulfur dioxide pollution from ships, according to the California Air Resources Board (ARB).
Half of the funds will be paid to the Air Pollution Control Fund, and the company agreed to comply with all regulatory requirements. The remaining half will be paid to the Marine Vessel Speed Reduction Incentive Program, a supplemental environmental project located in the Santa Barbara Channel Region and the Bay Area.
Since 1990, nationwide air quality has improved significantly for the six common air pollutants: ground-level ozone; particle pollution; lead; nitrogen dioxide; carbon monoxide; and sulfur dioxide, according to the US Environmental Protection Agency (EPA) report “Our Nation’s Air - Status and Trends through 2008”. annual PM 2.5
New research by a team from the US, China and Japan focusing on the Houston, Texas area suggests that widespread urban development alters weather patterns in a way that can make it easier for pollutants to accumulate during warm summer weather instead of being blown out to sea. ““The very existence of the Houston area favors stagnation.”
A new report from the US Environmental Protection Agency (EPA) finds that air pollution at US ports can be reduced significantly at all port types and sizes through a variety of strategies and cleaner technologies. national ambient air quality standards (NAAQS). Source: National Port Strategy Assessment. Click to enlarge.
—Tim Bates, a research chemist at NOAA’s Pacific Marine Environmental Laboratory (PMEL) in Seattle and co-lead of the US component of the study. In addition to its impacts on snow and ice, black carbon is an air pollutant.
OptiFuel Systems, a system integrator of Cummins and BAE Systems hybrid power products for decarbonizing the rail, marine, and microgrid power market, is in the process of finalizing a $2.6 million US Department of Energy (DOE) grant to demonstrate a pre-production Renewable Natural Gas (RNG) hybrid 4,300 hp line-haul locomotive.
In addition to CO 2 , other compounds such as ozone (O 3 ) precursors (nitrogen oxides (NO x =NO+NO 2 ), carbon monoxide (CO), and volatile organic compounds (VOCs)) and aerosols such as black carbon (BC) and organic carbon (OC) are emitted by ships. 1 from shipping in 2007, corresponding to 3.3% 1 of the total ship emissions in 2007.
We see it as similar to the ozone hole problem, where we really needed a tight, science-based focus on the limits to human inputs to the system--and howthose inputs affected the ozone layer's ability to keep people safe. by spewing pollution into the air. The largest blue bar is the effect of pollution particles on clouds. [[The
power from renewable sources—wind, solar, geothermal, biomass or landfill gas, hydropower, and marine and hydrokinetic—for retail electricity suppliers beginning at 6% in 2012 and gradually rising to 25% in 2025 and continuing at that level through 2039. heavy duty on-road vehicles, off-road vehicles, locomotives, marine and aviation engines.
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. Marine Cloud Brightening (MCB) Project intends to answer. That's the question the.
There is an exception to that in the category of what they call super pollutants, the very powerful but shorter-lived gases and chemicals that come from things like fertilizer production, methane. And that idea became what they call now marine cloud brightening. So those are really important, and those are a little bit different.
Air pollution—specifically PM 2.5 , ozone and NO 2 —could be to blame for up to 33 million emergency asthma attack visits to hospital a year, according to a new open-access study published in the journal Environmental Health Perspectives. 37% and 73% of ozone and PM 2.5 37% and 73% of ozone and PM 2.5
A) shows the base case peak concentrations for O 3 (ozone), ClNO and HCl in parts-per-billion by volume (ppbv). (B) Under extreme circumstances, this previously unknown chemistry could account for up to 40 parts per billion (ppb) of ozone; the current US Environmental Protection Agency (EPA) 8-hour average standard is 75 ppb.
Annual average concentrations of fine particulates from US sources of combustion emissions from (a) electric power generation; (b) industry; (c) commercial and residential sources; (d) road transportation; (e) marine transportation; (f) rail transportation; (g) sum of all combustion sources; (h) all sources. Source: MIT. Click to enlarge.
The study focuses on the period between 2005 and 2018 and tracks combustion emissions of various polluting compounds from various sectors, looking at every state in the contiguous United States, from season to season and year to year. Scientists have long known that pollution observes no boundaries, one of the prime examples being acid rain.
The California Air Resources Board (CARB) approved a plan to mitigate statewide harm from more than 10,000 tons of smog-causing pollutants released in the state due to Volkswagen’s (VW) use of illegal “defeat devices” in diesel passenger cars. More than 10 million Californians live in areas in extreme non-compliance areas for ozone.
Eligible diesel vehicles, engines and equipment may include buses, medium-duty or heavy-duty trucks, marine engines, locomotives and non-road engines, equipment or vehicles used in construction, handling of cargo (including at a port or airport), agriculture, mining or energy production (including stationary generators and pumps).
The funds, from the California Climate Investments program, will reduce key criteria pollutants, greenhouse gases (GHG), petroleum usage and toxic pollution where reductions are needed most. The SCAQMD is the air pollution control agency for Orange County and major portions of Los Angeles, San Bernardino and Riverside counties.
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