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TOAR shows present-day global ozone distribution and trends relevant to health; public database

Green Car Congress

FEBRUARY 6, 2018

Even so, during 2010-2014, people in parts of California, Arizona, Colorado, Texas, the Midwest and the Middle Atlantic still experienced more than 15 days a year in which ozone levels exceeded the US health-based air quality standard of 70 parts per billion (ppb) averaged over eight hours. Source: University of Leicester.

Ozone 255
Ozone Global North America Colorado 255
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Devil in the Details: World Leaders Scramble To Salvage and Shape Copenhagens UNFCCC Climate Summit

Green Car Congress

NOVEMBER 29, 2009

May, 2009 : Testifying at a public hearing conducted by the US Environmental Protection Agency (EPA), Stanford University professor Mark Jacobsen urged the EPA to incorporate black carbon into calculations of greenhouse gases. Earlier post.) and 5.0%. “It has implications for us. We can’t run away from it.

Climate 236
Climate Climate Change 2009 Emissions 236
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