Green Car Congress

FEBRUARY 6, 2018

Ozone levels across much of North America and Europe dropped significantly between 2000 and 2014. People living in parts of southern Europe, South Korea and southern Japan and China also experienced more than 15 days a year of ozone levels above 70 ppb. Trends in daily maximum ozone levels (known as 4MDA8) at urban and non-urban sites.

Ozone 255

Ozone Global North America Colorado 255

Green Car Congress

OCTOBER 30, 2009

The 100-year global warming potentials (GWPs) for methane, CO, and NO x (per Tg N) as given in the AR4 and in this study when including no aerosol response; the direct radiative effect of aerosol responses; and the direct+indirect radiative effects of aerosol responses. It’s a seemingly minor change, but it makes a difference to the climate.

Climate Change 268

Climate Change Climate Ozone Pollution 268

Green Car Congress

JANUARY 16, 2012

The researchers believe the measurements will substantially impact the understanding of atmospheric chemistry mechanisms—in particular, in the more rapid formation of secondary aerosols, important in the formation of local smog as well as in global climate change. Carl Percival. —Welz et al. —Marston (2012). Welz et al.

Ozone 268

Ozone Climate Change Climate 2012 268

Green Car Congress

OCTOBER 11, 2012

Life cycle inventories have typically been presented at global, national, or regional levels—sufficient for understanding global processes such as climate change and fossil fuel depletion, but insufficient for the analysis of local processes such as air pollution, according to the researchers.

Gasoline 236

Gasoline Emissions Gasoline-Electric Pollution 236

Green Car Congress

OCTOBER 23, 2012

A study led by researchers at UC Berkeley has found that diesel exhaust forms about seven times more secondary organic aerosols (SOA) than gasoline exhaust for the same mass of unburned fuel emissions and, given emission factors, can be expected to form 15 times more SOA than gasoline per liter of fuel burned. Click to enlarge.

Diesel 281

Diesel Los Angeles Exhaust Gasoline 281

Green Car Congress

AUGUST 9, 2009

Aerosols impact human health, due to their ability to penetrate deep into lungs, and impact Earth’s climate through the scattering and absorption of solar radiation and through serving as the nuclei on which clouds form, noted co-author Prof. Tags: Climate models Emissions Health. John Seinfeld from Caltech. “ Dr Kleindienst.

Climate 150

Climate New Zealand Denmark 2009 150