Sample ECCOH OH Parameterization

A sample parameterization of OH for July created to be used with the ECCOH module of the GEOS Earth System Model.  The methodology to generate the parameterization is described in detail in the GMD article "A Machine Learning Methodology for the Generation of a Parameterization of the Hydroxyl Radical".  The parameterization is included as an example and should not be used for research purposes without consulting the publication and/or the authors.  We have also included the dataset used to train the parameterization (OHParameterization_TrainingSet_1980_2019_M07.dat) as well as the training targets (OHParameterization_Targets_1980_2019_M07.dat).  The training data are from the NASA MERRA2 GMI simulation (https://acd-ext.gsfc.nasa.gov/Projects/GEOSCCM/MERRA2GMI/).  The scripts used to generate the training dataset and the parameterization can be found at https://zenodo.org/record/6046037.