CF currently includes conventions for
title, institution, contact, source (e.g model), history (audit trail of operations), references, comment
project, experiment
units, standard_name, long_name, auxiliary_variables, missing_value, valid_range, flag_values, flag_meanings
coordinates, bounds, grid_mapping (with formula_terms); time specified with reference_time ("time since T0") and calendar attributes
cell_methods, cell_measures, and climatological statistics