. . "\"tendency_of_X\" means derivative of X with respect to time. The construction \"moles_of_X_in_atmosphere\" means the total number of moles of X contained in the entire atmosphere, i.e, summed over the atmospheric column and over the entire globe. The chemical formula of molecular hydrogen is H2."@en . "SDN:P07::CFV8N114" . "SDN:P07::CFV8N114" . . . "2009-07-06 16:30:46.0" . "1" . "" . . "tendency_of_moles_of_molecular_hydrogen_in_atmosphere"@en . "deprecated"@en . . . "2009-07-06 16:30:46.0" . "true" . "1" . "SDN:P07::CFV8N114" . .