ODM2 Variable Name Controlled Vocabulary ODM2 Working Group A vocabulary for describing the name of Variables. Lanthanum lanthanum is a chemical element with symbol La and atomic number 57. It is a soft, ductile, silvery-white metal that tarnishes rapidly when exposed to air and is soft enough to be cut with a knife. Wikipedia https://en.wikipedia.org/wiki/Lanthanum Added to support Critical Zone Observatory (CZO) data use cases.