AOS2: Lesson 10
According to these figures, where do we find the primary pollutant emissions in Los
Angeles? - ANS Western Los Angeles, downwind of Los Angeles Airport
Correct, this is where most of the traffic is, as can be clearly seen in the CO plot
\At what time during the weekend do we find the most cars on the road? - ANS 5
\At what time in the afternoon during weekdays do we find the most cars on the road? -
ANS 6
Correct! It's anytime from 4 to 6 pm.
\At what time in the morning during weekdays do we find the highest levels of CO and
NO? - ANS 8 a.m.
Correct! Primary pollutants peak during or just after the morning rush hour.
\At what time in the morning during weekdays do we find the most cars on the road?
____ am (one specific hour of the morning only; do not include ":00") - ANS 7
Correct! It's any time from 6 to 8 am.
\At what time is the ozone mixing ratio highest? - ANS 2 p.m.
Correct! Ozone needs even more time to form, because we need the NO2 first, which
peaked in the late morning.
\Considering that it takes time to form ozone from the primary pollutants and the wind
flow, why is ozone elevated on the east side of the basin? - ANS Emissions on the west
side of the basin are transported to the east while ozone is formed along the way
\Does Los Angeles smog stay in Los Angeles? - ANS No, it can move to other
surrounding counties
Correct, The South Coast Air Quality Management District (SCAQMD) regulates air
quality in the entire LA basin
\How do you think the traffic patterns impact emissions? - ANS Emissions from cars are
directly linked to the number of cars on the road
The weekday has two emission peaks, morning and evening, while weekend emissions
are more distributed from late morning to late afternoon
\How has Los Angeles smog changed in the past few decades? - ANS Smog levels have
been considerably reduced
Correct, air quality in LA has considerably improved since the 1970s
\Looking at the wind flow line graph, what is the main wind direction? - ANS Winds
mainly blow from the coast towards the eastern part of the basin
\What are the health effects of LA smog? - ANS - Burning eyes
According to these figures, where do we find the primary pollutant emissions in Los
Angeles? - ANS Western Los Angeles, downwind of Los Angeles Airport
Correct, this is where most of the traffic is, as can be clearly seen in the CO plot
\At what time during the weekend do we find the most cars on the road? - ANS 5
\At what time in the afternoon during weekdays do we find the most cars on the road? -
ANS 6
Correct! It's anytime from 4 to 6 pm.
\At what time in the morning during weekdays do we find the highest levels of CO and
NO? - ANS 8 a.m.
Correct! Primary pollutants peak during or just after the morning rush hour.
\At what time in the morning during weekdays do we find the most cars on the road?
____ am (one specific hour of the morning only; do not include ":00") - ANS 7
Correct! It's any time from 6 to 8 am.
\At what time is the ozone mixing ratio highest? - ANS 2 p.m.
Correct! Ozone needs even more time to form, because we need the NO2 first, which
peaked in the late morning.
\Considering that it takes time to form ozone from the primary pollutants and the wind
flow, why is ozone elevated on the east side of the basin? - ANS Emissions on the west
side of the basin are transported to the east while ozone is formed along the way
\Does Los Angeles smog stay in Los Angeles? - ANS No, it can move to other
surrounding counties
Correct, The South Coast Air Quality Management District (SCAQMD) regulates air
quality in the entire LA basin
\How do you think the traffic patterns impact emissions? - ANS Emissions from cars are
directly linked to the number of cars on the road
The weekday has two emission peaks, morning and evening, while weekend emissions
are more distributed from late morning to late afternoon
\How has Los Angeles smog changed in the past few decades? - ANS Smog levels have
been considerably reduced
Correct, air quality in LA has considerably improved since the 1970s
\Looking at the wind flow line graph, what is the main wind direction? - ANS Winds
mainly blow from the coast towards the eastern part of the basin
\What are the health effects of LA smog? - ANS - Burning eyes
