NOAA, partners find about 98% decline in VOCs concentrations in LA Basin over last 50 years despite 3x increase in use of gasoline and diesel
Green Car Congress
AUGUST 9, 2012
CO2 ratio for this flight track segment decreased from 24.5 A comparison with London found that VOC mixing ratios in 2008 are at about the same level in both cities, but in London a much stronger decrease from higher mixing ratios in 1998 has led to the current mixing ratios. ppbv/ppmv to 10.7 Source: Warneke et al.
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