Data and code for training neural network parameterizations from an near-global aqua-planet simulation

This commit contains the code, coarse-grained data, processed training data, neural network models, and coupled NN-GCM simulations. It can be extracted by running

tar xzf <archive>

While this archive contains code (it is slightly out of date). This is the up-to-date code: https://zenodo.org/record/3248586

Move the "nn", "debiased",  and "data" folders from this archive into that code directory.