The Carbon Cycle - The carbon cycle on land, acted out here show a tree taking in carbon dioxide from the atmosphere, and combined with water and nutrients from the soil, growing. In the fall and winter, parts of the growth die off and release some carbon back into the system. At some point, the tree is no longer able to take in carbon and begins to die. When that happens, all the carbon absorbed in its body is released back into the cycle as it decomposes. Fire can accelerate this, sending plumes of carbon-laden aerosols into the atmosphere, as well as leaving carbon-rich ash deposits on the ground for further decomposition and recycling.
GCMD keywords can be found on the Internet with the following citation:
Olsen, L.M., G. Major, K. Shein, J. Scialdone, S. Ritz, T. Stevens, M. Morahan, A. Aleman, R. Vogel, S. Leicester, H. Weir, M. Meaux, S. Grebas, C.Solomon, M. Holland, T. Northcutt, R. A. Restrepo, R. Bilodeau, 2013. NASA/Global Change Master Directory (GCMD) Earth Science Keywords. Version 22.214.171.124.0