Question

Can I use the troposphere as the control of the experiment if i'm testing carbon levels?

Answer 1

I'm not quite sure, it took me a while of thinking. I hope you find the answer

Answer 2

Troposphere - the lowest region of the atmosphere, extending from the earth's surface to a height of about 3.7–6.2 miles (6–10 km), which is the lower boundary of the stratosphere.

Not likely.