Interpolate xarray data in isobaric coords to isentropic coords, returning a Dataset.
levels (pint.Quantity) – One-dimensional array of desired potential temperature surfaces
temperature (xarray.DataArray) – Array of temperature
args (xarray.DataArray, optional) – Any other given variables will be interpolated to each isentropic level. Must have
names in order to have a well-formed output Dataset.
max_iters (int, optional) – The maximum number of iterations to use in calculation, defaults to 50.
eps (float, optional) – The desired absolute error in the calculated value, defaults to 1e-6.
bottom_up_search (bool, optional) – Controls whether to search for levels bottom-up, or top-down. Defaults to
True, which is bottom-up search.
xarray.Dataset – Dataset with pressure, temperature, and each additional argument, all on the specified
Input variable arrays must have the same number of vertical levels as the pressure levels
array. Pressure is calculated on isentropic surfaces by assuming that temperature varies
linearly with the natural log of pressure. Linear interpolation is then used in the
vertical to find the pressure at each isentropic level. Interpolation method from
[Ziv1994]. Any additional arguments are assumed to vary linearly with temperature and will
be linearly interpolated to the new isentropic levels.
This formulation relies upon xarray functionality. If using Pint Quantities, use