ARTS built-in documentation server

Workspace Method yCloudRadar

Description

Replaces yCalc for cloud radar calculations.

The output format for iy from iyCloudRadar differs from the
standard one, and yCalc can not be used for cloud radar
simulations. This method works largely as yCalc, but is tailored
to handle the output from iyCloudRadar.

The method requires additional information about the sensor,
regarding its recieving properties. First of all, recieved
polarisation states are taken from sensor_pol_array. Note
that this WSV allows to define several measured polarisations
for each transmitted siggnal. For example, it is possible to
simulate transmission of V and measuring backsacttered V and H.

Secondly, the range averaging is described by range_bins. These
bins can either be specified in altitude or two-way travel time.
In both case, the edges of the range bins shall be specified.
All data (including auxiliary variables) are returned as the
average inside the bins. If any bin extands outisde the covered
range, zeros are added reflectivities, while for other quantities
(e.g. temperature) the averaging is restricted to covered part.

All auxiliary data from iyCloudRadar are handled.

No Jacobian quantities are yet handled.

Authors: Patrick Eriksson

Synopsis

yCloudRadar( y, y_aux, atmgeom_checked, atmfields_checked, iy_aux_vars, stokes_dim, f_grid, t_field, z_field, vmr_field, cloudbox_on, cloudbox_checked, sensor_pos, sensor_los, sensor_checked, iy_main_agenda, sensor_pol_array, range_bins )

Variables

OUTy(Vector)The measurement vector.
OUTy_aux(ArrayOfVector)Data auxilary to y.
INatmgeom_checked(Index)OK-flag for the geometry of the model atmosphere.
INatmfields_checked(Index)OK-flag for atmospheric grids and (physical) fields.
INiy_aux_vars(ArrayOfString)Selection of quantities for iy_aux and when applicable also y_aux.
INstokes_dim(Index)The dimensionality of the Stokes vector (1-4).
INf_grid(Vector)The frequency grid for monochromatic pencil beam calculations.
INt_field(Tensor3)The field of atmospheric temperatures.
INz_field(Tensor3)The field of geometrical altitudes.
INvmr_field(Tensor4)VMR field.
INcloudbox_on(Index)Flag to activate the cloud box.
INcloudbox_checked(Index)OK-flag for variables associated with the cloudbox.
INsensor_pos(Matrix)The sensor position for each measurement block.
INsensor_los(Matrix)The sensor line-of-sight (LOS) for each measurement block.
INsensor_checked(Index)OK-flag for sensor related variables.
INiy_main_agenda(Agenda)See agendas.cc.
INsensor_pol_array(ArrayOfArrayOfIndex)Multiple definition of sensor polarisation.
INrange_bins(Vector)The range bins of an active instrument.