. . . . "2009-07-06 16:21:17.0" . . . . "tendency_of_troposphere_moles_of_methane"@en . "1" . "SDN:P07::CF12S64" . . "SDN:P07::CF12S64" . "\"tendency_of_X\" means derivative of X with respect to time. The construction \"troposphere_moles_of_X\" means the total number of moles of X in the troposphere, i.e. summed over that part of the atmospheric column and over the entire globe. The chemical formula for methane is CH4. Methane is a member of the group of hydrocarbons known as alkanes. There are standard names for the alkane group as well as for some of the individual species."@en . "2009-07-06 16:21:17.0" . "1" . . . "false" . "SDN:P07::CF12S64" . "accepted"@en . "" .