The Carbon Cycle - Introduction to Carbon Capture and Sequestration - page 107

0.8 x 0.8 km Box

40.036

40.035

40.034

40.033

40.032

40.031

40.030

-105.55 -105.48 -105.46 -105.44

Longitude (deg)

Figure 3.2.1 Biological CO 2 levels
Measurements at the Niwot Ridge AmeriFlux site on the east slope of the Rocky
Mountains in Colorado (left). CU is the location of the tower illustrated on the right side,
which allows for the measurement of CO 2 levels at different heights above the ground.
Figure by Sun et al. [3.4], reprinted with permission from Elsevier .

so lar radi ance

21.5 m 2 m

1 m 10 m

420

6 m

400

380

360

0 4 8 12 16 20 24

Hour of the day

Figure 3.2.2 Daytime CO 2 levels at different heights
CO 2 levels at different heights above the ground and solar radiance as a function of the
time of the day. Figure by Sun et al. [3.4], reprinted with permission from Elsevier .