Climate and Forecast Standard Names
"Radioactivity" means the number of radioactive decays of a material per second. "Radioactivity concentration" means radioactivity per unit volume of the medium. "Rn" means the element "radon" and "221Rn" is the isotope "radon-221" with a half-life of 1.74e-02 days.
Mapping to be determined
radioactivity_concentration_of_221Rn_in_air