IcePlume package for MITgcm

Code and documentation relating to the 'IcePlume' package for MITgcm (http://mitgcm.org/), as described in:

Cowton, T., Slater, D., Sole, A., Goldberg, D. and Nienow, P., 2015. Modeling the impact of glacial runoff on fjord circulation and submarine melt rate using a new subgrid‐scale parameterization for glacial plumes. <em>Journal of Geophysical Research: Oceans</em>, <em>120</em>(2), pp.796-812.

See also https://github.com/tcowton/iceplume