Green Car Congress

SEPTEMBER 9, 2011

US EPA Region 9 8-hour ozone trends, 1979-2000. These State Implementation Plans (SIPs) are the roadmaps to meeting the 1997 8-hour ozone National Ambient Air Quality Standards (NAAQS) of 0.08 parts per million (ppm) by 2024. Source: EPA. Click to enlarge. In 2008, the 8-hour standard was lowered to 0.075 ppm. Earlier post.).

Ozone 236

Ozone EPA Pollution 2002 236

Green Car Congress

OCTOBER 23, 2020

Per capita GHG emissions in California have dropped from a 2001 peak of 14.0 in 2018 (2000-2018 average year-over-year increase is 6.8%), continuing the increasing trend as they replace Ozone Depleting Substances (ODS) being phased out under the 1987 Montreal Protocol. tons per person to 10.7 tons per person in 2018, a 24% decrease.

2020 221

2020 California Emissions 2018 221

Green Car Congress

APRIL 2, 2009

The on-road transportation (ORT) and power generation (PG) sectors are major contributors to CO 2 emissions and a host of short-lived radiatively-active air pollutants, including tropospheric ozone and fine aerosol particles, that exert complex influences on global climate. Unger et al. Click to enlarge. Unger et al.

Climate 150

Climate Emissions Transportation Climate Change 150