IERS

Reads ocean pole load tide coefficients provided by IERS as computed by Desai [13] and Desai et al. [14]
See materials from Chapter 7 of the IERS Conventions
Ocean Pole Tide File

Calling Sequence

import pyTMD.io
import pyTMD.utilities
ocean_pole_tide_file = pyTMD.utilities.get_data_path(['data','opoleloadcoefcmcor.txt.gz'])
ur,un,ue,glon,glat = pyTMD.io.IERS.read_binary_file(model_file=ocean_pole_tide_file)

Source code

pyTMD.io.IERS.extract_coefficients(lon: ndarray, lat: ndarray, **kwargs)[source]

Reads ocean pole tide file from [13, 14] and spatially interpolates to input coordinates

Parameters:

lon: np.ndarray

longitude to interpolate

lat: np.ndarray

latitude to interpolate

model_file: str

IERS map of ocean pole tide coefficients

method: str, default ‘spline’

Interpolation method

'spline': scipy bivariate spline interpolation

'linear', 'nearest': scipy regular grid interpolations

Returns:

ur: np.ndarray: radial ocean pole tide coefficients
un: np.ndarray: north ocean pole tide coefficients
ue: np.ndarray: east ocean pole tide coefficients

pyTMD.io.IERS.read_binary_file(**kwargs)[source]

Read real and imaginary ocean pole tide coefficients from [13, 14]

Parameters:

model_file: str or pathlib.Path: IERS map of ocean pole tide coefficients

Returns:

ur: np.ndarray: radial ocean pole tide coefficients
un: np.ndarray: north ocean pole tide coefficients
ue: np.ndarray: east ocean pole tide coefficients
glon: np.ndarray: ocean grid longitude
glat: np.ndarray: ocean grid latitude