"SDN:P07::CF12S53" . . . "false" . . . "2009-07-06 16:21:17.0" . "tendency_of_atmosphere_moles_of_molecular_hydrogen"@en . . "SDN:P07::CF12S53" . "" . "accepted"@en . "SDN:P07::CF12S53" . "1" . "1" . "2009-07-06 16:21:17.0" . . . . "\"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 molecular hydrogen is H2."@en .