mole_flux_of_nitrogen_out_of_sea_floor_sediment_due_to_denitrification mol m-2 s-1 [M2MS] In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. The surface called "sea floor" means the lower boundary of the ocean. "Sea floor sediment" is sediment deposited at the sea bed. The specification of a physical process by the phrase "due_to_" process means that the quantity named is a single term in a sum of terms which together compose the general quantity named by omitting the phrase. "Denitrification" is the conversion of nitrate into gaseous compounds such as nitric oxide, nitrous oxide and molecular nitrogen which are then emitted to the atmosphere.