This version of SCAMPy corresponds with the implementation described …

…in Z. Tan, C. M. Kaul, K.G. Pressel, Y. Cohen, T. Schneider, J. Teixeira, 2018, "An extended eddy-diffusivity mass-flux scheme for unified representation of subgrid-scale turbulence and convection." J. Adv. Model. Earth Sys.