Green Car Congress
MARCH 4, 2022
6PPD is an antioxidant and antiozonant that helps prevent the degradation and cracking of rubber compounds caused by exposure to oxygen, ozone and temperature fluctuation. They found that even small concentrations, such as those regularly occurring in surface waters after stormwater runoff events, were fatal to brook and rainbow trout.
Green Car Congress
DECEMBER 4, 2020
For decades, researchers have observed regular acute mortality events affecting adult coho salmon ( Oncorhycchus kisutch ) that migrate into urban waterways contaminated with stormwater runoff. Ozone breaks the bonds holding the tire together. 6PPD reacts with ozone before it can react with the tire rubber, sparing the tires.
Green Car Congress
FEBRUARY 10, 2013
Among the many climate-related vulnerabilities that can impact its mission, the US Environmental Protection Agency (EPA) cites a likely increase in tropospheric ozone pollution as potentially making it more difficult to attain National Ambient Air Quality Standards ( NAAQS ) in many areas with existing ozone problems.
Green Car Congress
AUGUST 16, 2019
The $461,000-project, titled “Heterogeneous Aging Mechanisms of Combustion and Biomass Burning Emissions,” will focus on how gases, such as ozone, react with pollutants emitted from power plants and forest fires. Both types of emissions cause tiny particles to be suspended in air. —Prof.
Green Car Congress
SEPTEMBER 25, 2009
The report released by the United Nations Environment Programme (UNEP), entitled Climate Change Science Compendium 2009 , highlights new research that identifies some events thought likely to occur in longer-term time horizons as already happening or set to happen far sooner than had previously been thought. Earlier post.).
Green Car Congress
JUNE 8, 2011
While cautioning that more work is needed to better understand the impact of urban development on wind patterns, Chen says the research can eventually help forecasters improve projections of major pollution events. Policy makers might also consider new approaches to development as cities work to clean up unhealthy air.
Cars That Think
NOVEMBER 16, 2021
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. In almost all previous projections for climate, tipping events like these were far in the future.
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