Green Car Congress

OCTOBER 28, 2010

The two combine in the atmosphere to make either nitric acid or peroxynitrous acid; the so-called branching ratio of these two chemicals is important in models of ozone production. This means less of the hydroxyl radical and nitrogen dioxide go away, leading to proportionately more ozone, mostly in polluted areas, Okumura said.

Ozone 210

Ozone Los Angeles Pollution California 210

Green Car Congress

APRIL 18, 2016

Since 1992, significant improvements in air quality have been observed across Southern California due to a broad range of air pollution reduction policies and strategies. Kiros Berhane, Ph.D., A model was used to estimate the association of changes in pollution levels with bronchitic symptoms.

Pollution 150

Pollution Los Angeles California Ozone 150

Green Car Congress

SEPTEMBER 1, 2012

Calculated E abs from core-shell Mie theory (lines) are shown for the differently sized BC particles and are in generally good agreement with the observations; the colored bands show the uncertainty range in the calculations. The observed mean ambient particle E abs versus RBC during CalNex is shown for comparison (orange line).

Climate 261

Climate Climate Change Carbon Boston 261