Green Car Congress
AUGUST 15, 2019
Long-term exposure to ambient air pollutants, especially O 3 (ozone), is significantly associated with increasing emphysema, according to a new study led by the University of Washington, Columbia University and the University at Buffalo. The annual averages of ozone levels in study areas were between about 10 and 25 ppb.
Green Car Congress
AUGUST 4, 2010
Global average values for the year 2000. An unambiguous ranking of the specific climate impact can be established for freight transportation, with shipping and rail having lowest and light trucks and air transport having highest specific impact for all cases calculated. Bars represent 1 SD. Credit: ACS, Borken-Kleefeld et al.
Green Car Congress
APRIL 13, 2014
giga tonne carbon dioxide equivalent (GtCO 2 eq) (2.2%) per year from 2000 to 2010 compared to 0.4 GtCO 2 eq (1.3%) per year from 1970 to 2000. Total anthropogenic GHG emissions were the highest in human history from 2000 to 2010 and reached 49 (±4.5) term potential as electric buses, light duty and 2?wheel
Green Car Congress
APRIL 4, 2011
million metric tons of avoided ozone-related yield losses of major food crops; $US0.6-2.4 Impacts of worldwide vehicle emissions in 2030 compared with 2000. While reductions in particulate matter tend to produce local health benefits, the scientists found health and agricultural benefits from reduced ozone disperse more widely.
Green Car Congress
FEBRUARY 19, 2010
Radiative forcing due to perpetual constant year 2000 emissions grouped by sector for 2020 (left) and 2100 (right) showing the contribution from each species. The net sum of total radiative forcing is indicated by the title of each bar. From Unger et al., Click to enlarge. Unger et al.
Green Car Congress
OCTOBER 30, 2009
Aerosols can have either a warming or cooling effect, depending on their composition, but the two aerosol types that Shindell modeled—sulfates and nitrates—scatter incoming light and affect clouds in ways that cool Earth. And hydroxyls drive long chains of reactions involving other common gases, including ozone. Shindell et al.
Cars That Think
AUGUST 16, 2021
Meanwhile, environmentalists were voicing concern—about how noisy such aircraft are taking off, about the possibility that their high-altitude emissions would erode the ozone layer, and about how disruptive the sonic booms would be. Fourteen production aircraft were manufactured, but one was scrapped in 1994 and another crashed in 2000.).
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