HGT: height [km]
RHO: density [10^(-3) kg/m^3]
PRES: pressure [Pa]
TEM: temperature [K]
OPAC: dust optical depth [non-dimensional]
UWND: zonal wind [m/s]
VWND: meridional wind [m/s]
TOPO: topography [m]
LONS: longitude [degrees]
LATS: latitude [degrees]
HeightFactorE: height above the surface at which the dust optical depth drops by factor of e with respect to is value in the lowest model layer [km]
Ls: areocentric solar longitude [degrees]
I, J, K: indices for latitude, longitude, time/Ls
