"Climate and Forecast (CF)" . "\"Canopy\" means the plant or vegetation canopy. In accordance with common usage in geophysical disciplines, \"flux\" implies per unit area, called \"flux density\" in physics. Unless indicated in the cell_methods attribute, a quantity is assumed to apply to the whole area of each horizontal grid box. Previously, the qualifier where_type was used to specify that the quantity applies only to the part of the grid box of the named type. Names containing the where_type qualifier are deprecated and newly created data should use the cell_methods attribute to indicate the horizontal area to which the quantity applies." . . . . . "precipitation flux onto canopy" .