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What is land ozone and where does it come from?
A small amount of ozone does occur naturally at ground level. Plants and soil release some. Some migrates down from the stratosphere. But neither of these sources contributes enough ozone to be considered a threat to the health of humans or the environment. Most of the ozone that is found near the ground comes from vehicle exhaust and emissions from factories, power plants, and refineries. Since 1900, the amount of ozone near the Earth's surface has more than doubled due to more automobiles and industry. (scied.UCAR.edu)
What levels of ozone do you expect in the forest versus the city?
How does ozone change with the season at each location?
Use the dataset in Tuva to look at levels of ozone in the forest and in the city.
Start by dragging "Date" to the X-axis
Then, drag the city name to the right Y-axis for "Color by attribute"
Finally, drag "temperature" to the Y-axis
Click on the top menu bar "Line -> Line Graph by Category"
Do you see a relationship between location, date, and temperature?
Now - drag "ozone" to the Y-axis
What do you notice about the data provided?
Do you see a relationship between location, date, and ozone?
Change the date to 3-4 weeks in a season. Are there differences in ozone?
Which ozone concentration happened the most often in Minneapolis? In Voyageur's?
Drag "City name" to the X-axis
Drag "Ozone" to the Y-axis
Drag "Ozone" to the Y-axis on the right side for Color By Attribute
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