This ORDA respository contains the MATLAB computer code and simulated data of key numerical experiments described in the above manuscript. See "read.me.txt" and the paper for more information.Reference: Ng, F. S. L. (2021, in press) Pervasive diffusion of climate signals recorded in ice-vein ionic impurities. The Cryosphere, https://doi.org/10.5194/tc-2020-217License for the data files: CC BY 4.0.License for the code: MIT open source license.