Diurnal Smog Variation
- Due to the time it takes for ozone
to build up in the afternoon, the highest peaks
of ozone occur inland, because the sea breeze
transports pollutants inland during the
- Without ROGs, the ozone
concentration would remain low most of the day.
- At night, there is no sunlight to
photo dissociate NO2, so O3
is not produced. The O3 from the
daytime photochemistry dissipates overnight.
Time series of ozone can be found at: http://www.atmos.ucla.edu/aqmd/currntobs.html for the LA Basin.