"Air pressure is the force per unit area which would be exerted when the moving gas molecules of which the air is composed strike a theoretical surface of any orientation."@en . . "SDN:P07::CFSN0099" . . "2" . "2017-07-24 14:36:59.0" . "false" . "2" . . . "tropopause_air_pressure"@en . "" . "2017-07-24 14:36:59.0" . "accepted"@en . "SDN:P07::CFSN0099" . . . . . "SDN:P07::CFSN0099" . . .