# Example file for continuum calculations.

# This defines the list of tag groups (`tgs'). Absorption
# coefficients will be calculated separately for each tag group. This
# is necessary in order to calculate weighting functions later on.
# The lines are assigned to the tag groups in the order as the groups
# are specified here. That means if you do ["H2O-181","H2O"], the last
# group H2O gets assigned all the H2O lines that do not fit in the
# first group.
#
# The continuum tags are special, since continua are not added by
# default. Thus, just selecting "H2O" will give you no continuum. You
# can add the H2O continua to a H2O line tag group, or keep them
# separate as in this example.
tgsDefine{
      [ "H2O-ContRosenkranzSelf",
	"H2O-ContRosenkranzForeign",
	"H2O-ContMPM93",
	"CO2-ContRosenkranzSelf",
	"CO2-ContRosenkranzForeign",
	"N2-ContRosenkranzSelf",
	"O2-ContRosenkranz"] 
}
#
# ********************************************************************
# The next few methods set the WSVs `cont_description_names' and
# `cont_description_parameters'. The first one contains names of allowed
# continua, the second the required parameters (in the case of
# Rosenkranz continua only two).
# 
# These WSVs always have to be set, even if there is no continuum. In
# that case you just call cont_descriptionInit and nothing else. Note
# that cont_description_names and cont_description_parameters may
# contain the descriptions for all kinds of continua. So, for each
# continuum tag mentioned in tgsDefine there MUST be a cont_description,
# but not for every cont_description there must be a continuum tag in
# tgsDefine.
#
cont_descriptionInit{}
#
# ---------- H2O -------------------------------
# Rosenkranz original parameters:
# Cs = 17.96e-34 1/m / (Hz^2*Pa^2)
# xs = 4.5
cont_descriptionAppend{
    name       = "H2O-ContRosenkranzSelf"
    parameters = [ 17.96e-34, 4.5 ]
}
#
# Rosenkranz original parameters:
# Cs = 5.43e-35 1/m / (Hz^2*Pa^2)
# xs = 0.0
cont_descriptionAppend{
    name       = "H2O-ContRosenkranzForeign"
    parameters = [ 5.43e-35, 0.0 ]
}
#
# MPM93 original parameters:
# f0 =  1780.0e9 Hz
# b1 = 22300.0 Hz/Pa
# b2 =     0.952
# b3 =    17.6e4 Hz/Pa
# b4 =    30.5
# b5 =     2
# b6 =     5
cont_descriptionAppend{
    name       = "H2O-ContMPM93"
    parameters = [ 1780.0e9, 22300.0, 0.952, 17.6e4, 30.5, 2, 5 ]
}
# ---------- CO2 -------------------------------
# Rosenkranz CO2-self continuum:
# C = 7.43e-37 1/(Pa^2*Hz^2*m)
# x = 5.08
cont_descriptionAppend{
    name       = "CO2-ContRosenkranzSelf"
    parameters = [ 7.43e-37, 5.08 ]
}
#
# Rosenkranz CO2-foreign continuum:
# C = 2.71e-37 1/(Pa^2*Hz^2*m)
# x = 4.7
cont_descriptionAppend{
    name       = "CO2-ContRosenkranzForeign"
    parameters = [ 2.71e-37, 4.7 ]
}
# ---------- nitrogen --------------------------
# Rosenkranz N2-self continuum:
# C = 1.05e-38 1/(Pa^2*Hz^2*m)
# x = 3.55
cont_descriptionAppend{
    name       = "N2-ContRosenkranzSelf"
    parameters = [ 1.05e-38, 3.55 ]
}
# ---------- oxygen ----------------------------
# Rosenkranz O2 continuum:
# C = 1.108e-14 K^2/(Hz*Pa*m)
# x = 0.8
cont_descriptionAppend{
    name       = "O2-ContRosenkranz"
    parameters = [ 1.108e-14, 0.8 ]
}
# ********************************************************************
# Read spectral line data from HITRAN catalogue for 0-200 GHz:
lines_per_tgReadFromCatalogues{
  filenames = ["arts/data/spectroscopy/hitran96/hitran96_lowfreq.par"]
  formats = [ "HITRAN96" ]
  fmin    = [     0.0e9  ]       
  fmax    = [     1.5e12  ]   
}

lines_per_tgWriteToFile{""} 


# Read the pressure, temperature, and altitude profiles and create 
# the workspace variable `raw_ptz_1d':
MatrixReadAscii (raw_ptz_1d) 
        {"arts/data/atmosphere/fascod/midlatitude-summer.tz.am"}

# The same for the input VMR profiles:
raw_vmrs_1dReadFromScenario
        {"arts/data/atmosphere/fascod/midlatitude-summer"}

# Optionally write this to a file:
#ArrayOfMatrixWriteAscii (raw_vmrs_1d) {""}


# Create the pressure grid `p_abs':
VectorNLogSpace(p_abs){
        start = 100000
        stop  = 100000
        n     =      2
}

VectorWriteAscii(p_abs){""}


# Now interpolate all the raw atmospheric input onto the pressure 
# grid and create the atmospheric variables `t_abs', `z_abs', `vmrs'
AtmFromRaw1D{}

# Set the physical N2 profile from the N2 profile in vmrs:
VectorCopyFromArrayOfVector(n2_abs,vmrs){5}

# Set the physical H2O profile from the H2O profile in vmrs:
VectorCopyFromArrayOfVector(h2o_abs,vmrs){1}

# Optionally write these to files:
VectorWriteAscii (t_abs) {""}
VectorWriteAscii (z_abs) {""}
ArrayOfVectorWriteAscii (vmrs)  {""}


# Create the frequency grid `f_mono':
VectorNLinSpace(f_mono){
        start = 100.0e9
        stop  = 100.0e9
        n     = 2    
}

# Write frequency grid to file:
VectorWriteAscii (f_mono) {""}

# Set the lineshape function for all calculated tags
lineshapeDefine{
              shape = "Voigt_Kuntz6" 
              normalizationfactor = "linear"
              cutoff = -1
              }

# Method xsec_per_tgCalcConts calculates the continua and adds them to
# xsec_per_tg. It requires cont_description as
# input (and quite a few other things).
# 
# The present xsec_per_tgCalc is renamed to xsec_per_tgCalcLines. It
# also adds the absorption cross-sectionto xsec_per_tg. So, this has to
# be initialized at first.
# 
# The total calling sequence is thus:
# 
# xsec_per_tgInit()
# xsec_per_tgAddLines()
# xsec_per_tgAddConts()
# absCalcFromXsec()
# 
# As an alternative you can use absCalc, which does all the above
# things. 

absCalc{}

# These we definitely want to write to files!
MatrixWriteAscii (abs) {""}
ArrayOfMatrixWriteAscii (abs_per_tg) {""}