Trending Sources

Toyota Central R&D Labs develops new ferrihydrite material that effectively removes ozone from air

Green Car Congress

Comparison of O 3. In ozone processes for water cleaning and odor removal, e.g. smoke from vehicle interiors, it could catch the unreacted O 3. Such isolated iron oxide units absorb ozone especially well. Most newer devices are equipped with filters that convert the ozone.

Study finds rising temperatures increase risk of unhealthy ozone levels absent sharp cuts in precursors

Green Car Congress

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). The study shows that Americans face the risk of a 70% increase in unhealthy summertime ozone levels by 2050, assuming continued greenhouse gas emissions with resultant significant warming (IPCC Scenario A2 and RCP (Representative Concentration Pathway) 8.5.). Ozone formation.

NOAA Study Identifies Nitrous Oxide as Top Ozone-Depleting Emission in 21st Century

Green Car Congress

Comparison of annual N 2 O ODP-weighted emissions from the 1990s with emissions of other ODS in 1987 and in 2008. Currently, anthropogenic N 2 O emissions represent the largest contribution to ozone depletion.

Renault makes public its lifecycle study of Fluence ICE vs Fluence EV

Green Car Congress

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 (?

Ozone 28

MIT study finds including non-CO2 emissions from synthetic aviation fuel in lifecycle analysis of climate impact can lead to decrease in relative environmental merit; need for a holistic analysis framework

Green Car Congress

In the months following a pulse of NO x in the upper atmosphere, ozone production is stimulated causing a short-term warming. The corresponding reduction in CH 4 , which is an important ozone precursor, leads to a long-term reduction in ozone.

Ozone 12

Toyota to pioneer use of biosynthetic rubber in engine and drive system hoses

Green Car Congress

Since plants absorb CO 2 from the atmosphere during their lifespan, such bio-materials achieve an estimated 20% reduction in material lifecycle carbon emissions in comparison to conventional petroleum-based hydrin rubber.

EPA report to Congress finds a strong scientific and technical foundation for mitigating black carbon emissions

Green Car Congress

Most of this infrared radiation passes through the atmosphere, but some is absorbed by GHG molecules like CO 2 , methane, ozone and others. Key policy-relevant scientific uncertainties related to BC. Source: EPA. Click to enlarge.

Ghana 12

Study finds climate impact of long distance trip can vary by factor of 10 depending upon mode, efficiency and occupancy

Green Car Congress

They accounted for both CO 2 emissions and emissions of ozone precursors (NO x , VOC, CO) and aerosols (BC or black carbon, OC, SO 2 ) as well as cloud effects (aviation-induced cirrus clouds and contrails)—i.e.,

NOAA greenhouse gas index continues climbing; 1.29 in 2010

Green Car Congress

the combined heating effect of long-lived greenhouse gases added to the atmosphere by human activities has increased by 29% since 1990, the index year used as a baseline for comparison.

Study: Urban grime releases NOx when exposed to sunlight

Green Car Congress

When in the air, these compounds may combine with volatile organic compounds to produce ozone, the main component of smog. In a subsequent laboratory comparison, they found that nitrate disappeared from grime 10,000 times faster than from a water-based solution when both were exposed to artificial sunlight.

Reduction in diesel carbonyl emissions using F-T fuel from coal

Green Car Congress

However, the use of CFT resulted in a remarkable reduction in carbonyl emissions in comparison with using DF. lower ozone formation potential of the carbonyl compounds present than DF under the identical operating conditions.

HEI study finds London Congestion Charging Scheme shows little evidence of improving air quality

Green Car Congress

From their comparison of actual air pollutant measurements within the CCZ with those at control sites in Outer London, the investigators reported little evidence of CCS-related changes in pollutant levels at roadside monitoring sites, where their modeling had suggested the most pronounced effects would be seen.

Up close and personal with Volkswagen’s e-Golf carbon offset project: Garcia River Forest

Green Car Congress

The main focus of the comparisons is on five environmental impact categories during production, use and recycling. ozone depletion potential (ODP). photochemical ozone creation potential.

NOAA, partners find about 98% decline in VOCs concentrations in LA Basin over last 50 years despite 3x increase in use of gasoline and diesel

Green Car Congress

VOCs, primarily emitted from the tailpipes of vehicles, are a key ingredient in the formation of ground-level ozone which, at high levels, can harm people’s lungs and damage crops and other plants. The 98% drop in VOCs in the last 50 years does not mean that ozone levels have dropped that steeply; the air chemistry that leads from VOCs to ozone is more complex than that.

NASA GISS Study Finds That Methane Has an Elevated Warming Effect Due to Interactions With Aerosols

Green Car Congress

Despite their limitations, GWPs are widely used for comparison among long-lived gases, forming the basis for worldwide political agreements on climate and carbon trading. And hydroxyls drive long chains of reactions involving other common gases, including ozone.

GISS study finds applying stricter non-CO2 vehicle emission standards worldwide would yield climate benefits in addition to major health and agricultural benefits

Green Car Congress

million metric tons of avoided ozone-related yield losses of major food crops; $US0.6-2.4 While reductions in particulate matter tend to produce local health benefits, the scientists found health and agricultural benefits from reduced ozone disperse more widely. That’s largely because more stringent standards would reduce emissions of black carbon, a constituent of soot, and carbon monoxide, a precursor of ozone. Climate response to non-CO 2 vehicle emissions.

Sponsors of SAE Study Conclude HFO-1234yf Can Be Used As Low-GWP Global Replacement Refrigerant in MAC Systems

Green Car Congress

HFO-1234yf is a non-Ozone Depleting Substance with a Global Warming Potential (GWP) of 4. In comparison, the current refrigerant, R-134a, has a GWP of 1,430. A two-year Cooperative Research Program conducted through SAE International to investigate the safety and environmental performance of the low-global-warming-potential (GWP) refrigerant HFO-1234yf for mobile air conditioning (MAC) systems has finished its study.


Ford researchers report detailed study of the effect of different ethanol blend levels on emissions from FFVs

Green Car Congress

Comparison of the NO x data shows the dominant role of engine calibration on the tailpipe emissions of NO x. Ozone reduction in highly polluted urban areas generally requires reduction of the emissions of both NO x and organic compounds, the Ford team noted.

ICCT finds growth in shipping in Arctic could increase pollutant emissions 150-600% by 2025 with current fuels

Green Car Congress

Comparison of the potential reduction in emissions with the application of lower sulfur 0.5% MARPOL Annex VI sets limits on NO x and SO x emissions from ship exhaust, and prohibits deliberate emissions of ozone-depleting substances. and 0.1% fuel for Arctic vessels assuming a low-growth scenario. Source: ICCT. Click to enlarge.

Emissions of Air Pollutants down in EU-27

Green Car Congress

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%. The data viewer can show emission trends for the main sectors and allows comparison of emissions between different countries and activities.

Study Finds Environmental and Tailpipe Pollutants Benefits in Using Biodiesel in Construction Vehicles

Green Car Congress

Key improvements in the LCI included an update of combustion emission factors based on 2006 US national average emission rates; comparison of pre-NSPS (New Source Performance Standards) and NSPS-compliant soyoil plants; and the use of portable emission measurement system (PEMS) data for real-world tailpipe emissions factors based on 15 nonroad diesel vehicles: five backhoes, four front-end loaders, and six motor graders. ozone, PM) problems may be less pressing.

Comparative study finds that B20 increases emission rates of a number of pollutants in both light- and medium-duty diesel engines at idle

Green Car Congress

Unregulated pollutants also include ozone precursors and bioaccumulative and toxic compounds. Assanis (2012) Gaseous and Particulate Emissions from Diesel Engines at Idle and under Load: Comparison of Biodiesel Blend and Ultralow Sulfur Diesel Fuels. Emission rates for the 1.7 and 6.4

Lifecycle study finds that environmental impacts of silicon-anode Li-ion battery could be roughly comparable with conventional Li-ion battery

Green Car Congress

A conventional battery pack using graphite anode with the same capacity was the a basis for comparison of the life cycle impact results. Life cycle impact benchmarking between LIB packs with SiNW and graphite anode. Units of the X-axis values are different and shown under each impact category name on Y-axis. Credit: ACS, Li et al. Click to enlarge.

Automakers agree on common plug to recharge electric vehicles

Tony Karrer Delicious EVdriven

Im gonna post a couple excerpts here: Most ozone pollution is caused by motor vehicles, which account for 72% of nitrogen oxides and 52% of reactive hydrocarbons (principal components of smog). (7,

Perspective: US Needs to Transition to Hydrous Ethanol as the Primary Renewable Transportation Fuel

Green Car Congress

During the 1992 and later high ozone seasons no person, including without limitation, no retailer or wholesale purchaser-consumer, and during the 1992 and later regulatory control periods, no refiner, importer, distributor, reseller, or carrier shall sell, offer for sale, dispense, supply, offer for supply, transport or introduce into commerce gasoline whose Reid vapor pressure exceeds the applicable standard. by Brian J. Donovan, CEO Renergie, Inc.