If I’ve already taken the opportunity to drone on and on about why ‘atmosphere,’ let me instead rely on a pithy quote from ecologist John Harte (Berkeley, Energy and Resources Group) for a justification of the choice of ‘accounting’:

“Who but ecologists will prepare the scientific basis for properly accounting for the value of healthy ecosystems to humanity?” (Harte, Confronting Visions of a Sustainable Future, Ecological Applications, 1996 6(1))