pysiral.cryosat2.l1_adapter

Classes

`ESACryoSat2PDSBaselineD`	Base class (mostly for type checking).
`ESACryoSat2PDSBaselineDPatchFES`	Base class (mostly for type checking).
`ESACryoSat2PDSBaselineDPatchFES2022`	Base class (mostly for type checking).
`ESACryoSat2PDSBaselineDPatchFESArctide`	Base class (mostly for type checking).
`ESACryoSat2PDSBaselineDPatchFESArctideDiscrim`	Base class (mostly for type checking).

Module Contents

class pysiral.cryosat2.l1_adapter.ESACryoSat2PDSBaselineD(cfg, raise_on_error=False)

Bases: pysiral.l1preproc.Level1PInputHandlerBase

Base class (mostly for type checking).

nc = None

filepath = None

l1 = None

static translate_opmode2radar_mode(op_mode): Converts the ESA operation mode str in the pysiral compliant version

get_l1(filepath, polar_ocean_check=None): Main entry point to the CryoSat-2 Baseline-D Input Adapter :param filepath: :param polar_ocean_check: :return:

static get_wfm_range(window_delay, n_range_bins): Returns the range for each waveform bin based on the window delay and the number of range bins :param window_delay: The two-way delay to the center of the range window in seconds :param n_range_bins: The number of range bins (256: sar, 512: sin) :return: The range for each waveform bin as array (time, ns)

static interp_1hz_to_20hz(variable_1hz, time_1hz, time_20hz, **kwargs): Computes a simple linear interpolation to transform a 1Hz into a 20Hz variable :param variable_1hz: an 1Hz variable array :param time_1hz: 1Hz reference time :param time_20hz: 20 Hz reference time :return: the interpolated 20Hz variable

_read_input_netcdf(filepath, **kwargs): Read the netCDF file via xarray

_set_input_file_metadata(): Fill the product info

_set_l1_data_groups(): Fill all data groups of the Level-1 data object with the content of the netCDF file. This is just the overview method, see specific sub-methods below :return: None

_set_time_orbit_data_group(): Transfer the time orbit parameter from the netcdf to l1 data object :return: None

_set_waveform_data_group()

Transfer of the waveform group to the Level-1 object. This includes

the computation of waveform power in Watts
the computation of the window delay in meter for each waveform bin
extraction of the waveform valid flag

Returns:: None

_set_range_correction_group(): Transfer the range corrections defined in the l1p config file to the Level-1 object NOTE: The range corrections are all in 1 Hz and must be interpolated to 20Hz :return: None

_set_surface_type_group()

Transfer of the surface type flag to the Level-1 object NOTE: In the current state (TEST dataset), the surface type flag is only 1 Hz. A nearest neighbour

interpolation is used to get the 20Hz surface type flag.

Returns:: None

_set_classifier_group()

Transfer the classifiers defined in the l1p config file to the Level-1 object. NOTE: It is assumed that all classifiers are 20Hz

In addition, a few legacy parameter are computed based on the waveform counts that is only available at this stage. Computation of other parameter such as sigma_0, leading_edge_width, … are moved to the post-processing

Returns:: None

property empty

class pysiral.cryosat2.l1_adapter.ESACryoSat2PDSBaselineDPatchFES(cfg, raise_on_error=False)

Bases: ESACryoSat2PDSBaselineD

Base class (mostly for type checking).

_set_l1_data_groups(): Fill all data groups of the Level-1 data object with the content of the netCDF file. This is just the overview method, see specific sub-methods below :return: None

_get_fes_path(filepath)

class pysiral.cryosat2.l1_adapter.ESACryoSat2PDSBaselineDPatchFES2022(cfg, raise_on_error=False)

Bases: ESACryoSat2PDSBaselineD

Base class (mostly for type checking).

_set_l1_data_groups(): Fill all data groups of the Level-1 data object with the content of the netCDF file. This is just the overview method, see specific sub-methods below :return: None

_get_fes_path(filepath)

class pysiral.cryosat2.l1_adapter.ESACryoSat2PDSBaselineDPatchFESArctide(cfg, raise_on_error=False)

Bases: ESACryoSat2PDSBaselineDPatchFES

Base class (mostly for type checking).

_set_l1_data_groups(): Fill all data groups of the Level-1 data object with the content of the netCDF file. This is just the overview method, see specific sub-methods below :return: None

_get_arctide_path(filepath)

class pysiral.cryosat2.l1_adapter.ESACryoSat2PDSBaselineDPatchFESArctideDiscrim(cfg, raise_on_error=False)

Bases: ESACryoSat2PDSBaselineDPatchFESArctide

Base class (mostly for type checking).

_set_l1_data_groups(): Fill all data groups of the Level-1 data object with the content of the netCDF file. This is just the overview method, see specific sub-methods below :return: None

_get_disc_path(filepath)