Problem
A. Describe the distribution of air sampling sites and the measurement methods used.
Using the map or table, identify the site nearest to you the two locations. that is not discontinued. In the table, click on the code for that site.
B. What is the site's elevation in meters above sea level (mas!)?
C. What sampling methods are used at the site?
D. What is the plotted time span?
E. What is the range of variation of CO, (shown by the circle symbols)?
F. Describe the data--how does CO, vary over time?
G. Is a seasonal cycle visible in the multiyear graph? Explain.