. . . " \"tendency_of_X\" means derivative of X with respect to time. The construction \"atmosphere_moles_of_X\" means the total number of moles of X in the entire atmosphere, i.e. summed over the atmospheric column and over the entire globe. The chemical formula for dinitrogen pentoxide is N2O5." . "Climate and Forecast (CF)" . "tendency of atmosphere moles of dinitrogen pentoxide" .