Green Car Congress
FEBRUARY 6, 2018
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. Trends in daily maximum ozone levels (known as 4MDA8) at urban and non-urban sites.
Green Car Congress
JUNE 12, 2023
A study led by Norwegian climate center CICERO has found that the global warming effect of leaked hydrogen is almost 12 times stronger than that of CO 2. Rather, it is the leaking of hydrogen from production, transportation and usage that adds to global warming. A global warming potential of 11.6 Sand et al. Sand et al.
Green Car Congress
NOVEMBER 10, 2009
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. he report is the third SAE report to evaluate the new refrigerant.
Cars That Think
DECEMBER 19, 2021
Up there, 10 to 50 kilometers above the Earth’s surface, ozone molecules absorb the sun’s ultraviolet light, protecting life far below. Even less is understood about the potential risks to people and the environment—could the particles deplete the ozone layer, for example, or significantly alter the weather?
Green Car Congress
JUNE 27, 2013
A team from Austria and Norway has found that the climate impact from a long-distance trip (500–1,000 km, or 310–621 miles) can easily vary by a factor of 10 per passenger depending on mode choice, vehicle efficiency, and occupancy. Insert: Zoom in for bus, trains, and cars. Credit: ACS, Borken-Kleefeld et al. Click to enlarge.
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