ODM2 Variable Name Controlled Vocabulary ODM2 Working Group A vocabulary for describing the name of Variables. Effective energy and mass transfer (EEMT) Effective energy and mass transfer (EEMT) couples energy and mass flux to the subsurface in the form of effective precipitation and net primary production in a common energy unit. https://doi.org/10.5194/hess-16-725-2012 Added to support Critical Zone Observatory (CZO) data use cases.