Green Car Congress
NOVEMBER 7, 2017
Ozone pollution near Earth’s surface is one of the main ingredients of summertime smog. It is also not directly measurable from space due to the abundance of ozone higher in the atmosphere, which obscures measurements of surface ozone. —Jin et al.
Green Car Congress
JULY 22, 2010
Illustration of projected ozone changes in the South Coast region due to climate change in 2050. Areas in orange and red could see ozone concentrations elevated by 9 to 18 parts per billion. Click to enlarge. Our study reveals that climate change and regional air pollution are intertwined problems. Kleeman of UC Davis, lead author.
Green Car Congress
NOVEMBER 10, 2011
Started in 2004, the AGGI reached 1.29 It also includes several chemicals known to deplete Earth’s protective ozone layer, which are also active as greenhouse gases. Before the Industrial Revolution of the 1880s, carbon dioxide concentration in the atmosphere was about 280 ppm. in 2010—i.e.,
Green Car Congress
DECEMBER 4, 2013
2010 engines emissions reduction relative to 2010, 2007, and 2004 US emission standards. earlier post ), found that emissions of NO 2 and other nitrogen oxides—which can have direct health effects and contribute to the formation of smog—were approximately 61% below the 2010 EPA standard and 99% lower than in 2004 engines.
Green Car Congress
JULY 11, 2011
Stage I VRS apply to the gasoline distribution industry; Stage II to service stations. systems in areas classified “Serious,” “Severe,” or “Extreme” for nonattainment of the ozone national ambient air quality standard (NAAQS). Stage II Vapor Recovery Systems Issues Paper (EPA, 2004). Storage Tanks (Tom Driscoll, EPA).
Green Car Congress
MARCH 27, 2010
This could explain satellite measurements showing high levels of stratospheric ozone, water vapor and other chemicals over Asia during summer. Satellite records from 2004 to 2009 showed a pattern of increases in the chemical’s presence in the stratosphere each summer, correlating with the timing of the monsoon.
Green Car Congress
NOVEMBER 23, 2009
ppb—higher than those in pre-industrial times (before 1750) by 38%, 157% and 19%, respectively. Its atmospheric abundance was nearly constant at about 280 ppm before industrialization. Before the industrial era, atmospheric methane was about 700ppb. ppb higher than in 2007, and 19% above the pre-industrial level.
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