Utilities

Common utility functions.

append_description(dataset[, description])	Append variable attributes to a given dataset.
append_timestep_netcdf(filename, data, timestamp)	Append a timestep to an existing netCDF4 file.
return_if_type(variable, variablename, ...)	Return a variable if it matches an expected type.
plev_from_phlev(halflevels)	Returns full-level pressures for given half-level pressures.
dz_from_z(z)	Return the level thickness given the height array.
get_quadratic_pgrid([surface_pressure, ...])	Create matching pressure levels and half-levels.
get_pressure_grids([surface_pressure, ...])	Create matching pressures at full-levels and half-levels.
ozonesquash(o3, z, squash)	Squashes the ozone profile upwards or stretches it downwards, with no change to the shape of the profile above the ozone concentration maximum
ozone_profile_rcemip(plev[, g1, g2, g3])	Compute the ozone volumetric mixing ratio from pressure.
humidity_profile_rcemip(z[, q0, qt, zt, ...])	Compute the water vapor volumetric mixing ratio as function of height.
parse_fraction_of_day(time)	Calculate the fraction of a day.
standard_atmosphere(z[, coordinates])	International Standard Atmosphere (ISA).
prefix_dict_keys(dictionary, prefix[, delimiter])	Return a copy of a dictionary with a prefix added to every key.
find_first_below(arr, val)	Find first index in arr that falls below given val.