Papers like [1], [2], etc. and the work of Axel Kleidon suggest that the the biosphere increases the production of entropy of Earth but I'd like to know if we could quantify this in a simple way. What would the entropy production be without life? If we knew that then the difference between what it is estimated to be would be easy to calculate.

1. Ulanowicz, R.E. and Hannon, B.M., 1987. Life and the production of entropy. Proceedings of the Royal society of London. Series B. Biological sciences, 232(1267), pp.181-192.
2. Schneider, E.D. and Kay, J.J., 1994. Life as a manifestation of the second law of thermodynamics. Mathematical and computer modelling, 19(6-8), pp.25-48.