I usually post about the results of our experiments as they are published. This time, I don't have to post, because it was covered by a reporter! You can read about some of our research on soil CO2 on Nature World News, where we show that the movement of CO2 into and out of soils is impacted by water source, as the result of both geochemistry and soil microorganisms.

Here are some photos that show you the equipment we used to make the measurements in a couple of the wet locations we studied:

The LI-COR machine in one of the permafrost seep patches

Me using the LI-COR in an area along the edge of Lake Fryxell

These results are published in the paper:  Ball, B.A. and R.A. Virginia. 2015. Controls on diel soil CO2 flux across moisture gradients in a polar desert. Antarctic Science. doi:10.1017/S0954102015000255