Dear Napoleon Ah, I see. It is dg/dz. In that case I would call it
upward_derivative_of_acceleration_due_to_gravity since Xward_derivative is a construction we use in other names. With this name it would be a negative number (g decreases as you go upward). If you want a positive number it would be downward_derivative_etc. It is good to specify the direction of the derivative, because you might want to name other ones. You might later want a name for dg/dx, for example. Best wishes Jonathan > > > Gravity Potential Gradient > > > standard name: gravity_potential_gradient > > > unit: s-2 > > > > There is an existing stdname of specific_gravitational_potential_energy > > in J kg-1 = m2 s-2. Since taking a gradient has a sign and direction, your > > quantity could be called > > upward_derivative_of_specific_gravitational_potential_energy > > for consistency with other names for derivatives, and it's in m s-2, isn't > > it? > > - not s-2. However this quantity could also, more familiarly, be called the > > acceleration_due_to_gravity i.e. g. Is it g you mean? I suppose g is the > > vertical derivative of geopotential, which isn't quite the same as GPE. Are > > you making a distinction here? > > > > With this quantity I have make a correction and say it is rather a second > order > derivative of the potential, more related to spatial rate of change of g. > Like what is described here: > http://www.gradiometry.com/gradiometry In some cases, the unit used is the > eotvos, but we prefer s-2. > Perhaps just gravity_gradient ? _______________________________________________ CF-metadata mailing list [email protected] http://mailman.cgd.ucar.edu/mailman/listinfo/cf-metadata
