Green Car Congress

APRIL 15, 2020

The current 24-hour standard was issued in 2006. concentrations in the US fell by 39% between 2000 and 2018 while average PM 10 concentrations fell by 31% during the same period. concentrations. EPA is proposing to retain the existing 24-hour standard, with its level of 35 ?g/m Average PM 2.5

EPA 186

EPA Standards Ozone Pollution 186

Green Car Congress

NOVEMBER 21, 2011

The decrease in CO 2 equivalent emissions of ODSs (ozone-depleting substances: CFCs, halons, HCFCs, and others) may be offset by the projected increase in their non-ozone depleting substitutes (HFCs) (lines designated as HFC scenarios). W m -2 relative to 2000. Climate and the Ozone Layer. Source: UNEP. Click to enlarge.

Climate 287

Climate Ozone Emissions Transportation 287

Green Car Congress

SEPTEMBER 25, 2009

per year from 2000-2007. For 30 reference glaciers in nine mountain ranges tracked by the World Glacier Monitoring Service, the mean rate of loss since 2000 has roughly doubled since the rate during the previous two decades. Global emissions were growing by 1.1% each year from 1990-1999 and this accelerated to 3.5%

Climate Change 259

Climate Change Climate 2007 Ozone 259

Green Car Congress

AUGUST 22, 2009

The downward emission trend of three main pollutants which cause ground-level ozone continued in 2007: carbon monoxide (CO) fell by 57%, non-methane volatile organic compounds (NMVOCs) were down by 47% and nitrogen oxides (NO x ) have dropped 36%. EU-27 emissions of all four pollutants were lower in 2007 than in 2006.

Pollution 236

Pollution Emissions Czech Republic United Kingdom 236