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0018 function [C,I] = qartsCloudbox
0019
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0021 C.LIMITS = {};
0022 I.LIMITS = [ ...
0023 'Cloudbox limits. Given as a vector, with length 2-6 depending on the ',...
0024 'atmospheric dimensionality. Absolute units are used (not indices). ',...
0025 'Geometrical altitude is used for the vertical dimension. See further ',...
0026 'cloudboxSetManuallyAltitude. The vector can be longer than actually needed.'
0027 ];
0028
0029 C.METHOD = {};
0030 I.METHOD = [ ...
0031 'Calculation method for scattering. Allowed options are:',...
0032 '# ''DOIT'' : Discrete ordinate iterative method',...
0033 '# ''MC'' : Backward Monte Carlo',...
0034 '# ''FOS'' : Fixed order of scattering',...
0035 '# ''none'' : Scattering calculations handled differently.',...
0036 'A method must always be selected when Q_CLOUDBOX_DO=1.'
0037 ];
0038
0039 C.METHOD_PRMTRS = {};
0040 I.METHOD_PRMTRS = [ ...
0041 'Parameters and data for scattering calculation method, given as a ',...
0042 'structure. DATA must always be specified when Q_CLOUDBOX_DO=1. ',...
0043 'The set of fields of this structure depend on choosen METHOD:',...
0044 '# ',...
0045 '#*** MC ***',...
0046 '# STD_ERR : As the *MCGeneral* keyword argument with same name.',...
0047 '# The unit of this value is determined by Q.Y_UNIY.',...
0048 '# MAX_TIME : As the *MCGeneral* keyword argument with same name.',...
0049 '# MAX_ITER : As the *MCGeneral* keyword argument with same name.',...
0050 '# MIN_ITER : As the *MCGeneral* keyword argument with same name.',...
0051 '# ',...
0052 '#*** DOIT ***',...
0053 '# N_ZA_GRID : ',...
0054 '#As the keyword arguments of *DoitAngularGridsSet*.',...
0055 '# N_AA_GRID : ',...
0056 '#As the keyword arguments of *DoitAngularGridsSet*.',...
0057 '# ZA_GRID_OPT_FILE: ',...
0058 '#As the keyword arguments of *DoitAngularGridsSet*.', ...
0059 ' If no filename is given (""), equidistant grids are used for RT', ...
0060 ' and scattering integral. This option can be used for down-looking', ...
0061 ' simulations.',...
0062 '# SCAT_ZA_INTERP : ',...
0063 '#As the WSV with same name. Set through *DoitAngularGridsSet*. Set to ',...
0064 'empty string ('''') if an equidistant grid shall be used based on ',...
0065 '*N_ZA_GRID*. String or vector input is possible when setting a specific ',...
0066 'grid.',...
0067 '# EPSILON : ',...
0068 '#As the keyword argument of *doit_conv_flagAbsBT*. ',...
0069 'Here given as a vector. Length of vector must be >= *STOKES_DIM*. ',...
0070 'The vector is truncated if longer.',...
0071 '# ALL_F : ',...
0072 '#As the keyword argument *all_frequencies* of *doit_i_fieldSetClearsky*. ',...
0073 'If true, the internal intensity field of the cloud box is reset to the ',...
0074 'clear sky field for each frequency. Otherwise, this is done only for the ',...
0075 'the first frequency, and the previous solution field is used as starting ',...
0076 'point for subsequent frequencies.',...
0077 '# NORMALIZE : ',...
0078 '#As the keyword argument *normalize* of *doit_i_fieldUpdateSeq1D*. ',...
0079 'Default is 0.',...
0080 '# NORM_ERROR_THRESHOLD: ',...
0081 '#As the keyword argument *norm_error_threshold* of ',...
0082 '*doit_i_fieldUpdateSeq1D*. Must be set if NORMALIZE is an existing field.'
0083 ];
0084
0085 C.OPT_PROP_PART_AGENDA = {};
0086 I.OPT_PROP_PART_AGENDA = [ ...
0087 'List of WSMs to include in agenda *opt_prop_gas_agenda*. ', ...
0088 'WSMs are listed as an array of strings, with possible arguments. '
0089 ];
0090
0091 C.PARTICLE_MASSES = {};
0092 I.PARTICLE_MASSES = [ ...
0093 'As the WSM with the same name.'
0094 ];
0095
0096 C.PND_FIELD = {};
0097 I.PND_FIELD = [ ...
0098 'Raw fields of particle number densities. These are added by the WSM ',...
0099 'ParticleTypeAdd. Each raw field can be given as a file name or numeric ',...
0100 'data. The number of elements in *PND_FIELD* and *SCAT_DATA* must be ',...
0101 'identical. That is, both fields must be set, or both be {}.'
0102 ];
0103
0104 C.SCAT_DATA = {};
0105 I.SCAT_DATA = [ ...
0106 'Raw ingle scattering data. These are added by the WSM ',...
0107 'ParticleTypeAdd. Each raw field can be given as a file name or numeric ',...
0108 'data. The number of elements in *PND_FIELD* and *SCAT_DATA* must be ',...
0109 'identical. That is, both fields must be set, or both be {}.'
0110 ];
0111
0112 C.SPT_CALC_AGENDA = {};
0113 I.SPT_CALC_AGENDA = [ ...
0114 'List of WSMs to include in agenda *spt_calc_agenda*. ', ...
0115 'WSMs are listed as an array of strings, with possible arguments. This ',...
0116 'agenda is not used by the MC method.'
0117 ];
0118 