API for MakeModel

class MakeModel.Modeler(debug=False, TelluricModelingDirRoot='/home/user/.TelFit/', nmolecules=12)
EditProfile(profilename, profile_height, profile_value)
This function will take a np array as a profile, and stitch it into the
MIPAS atmosphere profile read in in __init__
Parameters:
  • profilename – A string with the name of the profile to edit. Should be either ‘pressure’, ‘temperature’, or one of the molecules given in the MakeModel.MoleculeNumbers dictionary
  • profile_height – A np array with the height in the atmosphere (in km)
  • profile_value – A np array with the value of the profile parameter at each height given in profile_height.
Returns:

None
MakeModel(pressure=795.0, temperature=283.0, lowfreq=4000, highfreq=4600, angle=45.0, humidity=50.0, co2=368.5, o3=0.039, n2o=0.32, co=0.14, ch4=1.8, o2=210000.0, no=1.1e-19, so2=0.0001, no2=0.0001, nh3=0.0001, hno3=0.00056, lat=30.6, alt=2.1, wavegrid=None, resolution=None, save=False, libfile=None, vac2air=True)
Here is the important function! All of the variables have default values,
which you will want to override for any realistic use.
Parameters:
  • pressure – Pressure at telescope altitude (hPa)
  • temperature – Temperature at telescope altitude (Kelvin)
  • lowfreq – The starting wavenumber (cm^-1)
  • highfreq – The ending wavenumber (cm^-1)
  • angle – The zenith distance of the telescope (degrees). This is related to the airmass (z) through z = sec(angle)
  • humidity – Percent relative humidity at the telescope altitude.
  • co2 – Mixing ratio of this molecule (parts per million by volumne)
  • o3 – Mixing ratio of this molecule (parts per million by volumne)
  • n2o – Mixing ratio of this molecule (parts per million by volumne)
  • co – Mixing ratio of this molecule (parts per million by volumne)
  • ch4 – Mixing ratio of this molecule (parts per million by volumne)
  • o2 – Mixing ratio of this molecule (parts per million by volumne)
  • no – Mixing ratio of this molecule (parts per million by volumne)
  • so2 – Mixing ratio of this molecule (parts per million by volumne)
  • no2 – Mixing ratio of this molecule (parts per million by volumne)
  • nh3 – Mixing ratio of this molecule (parts per million by volumne)
  • hno3 – Mixing ratio of this molecule (parts per million by volumne)
  • lat – The latitude of the observatory (degrees)
  • alt – The altitude of the observatory above sea level (km)
  • wavegrid – If given, the model will be resampled to this grid. Should be a 1D np array
  • resolution – If given, it will reduce the resolution by convolving with a gaussian of appropriate width. Should be a float with R=lam/dlam
  • save – If true, the generated model is saved. The filename will be printed to the screen.
  • libfile – Useful if generating a telluric library. The filename of the saved file will be written to this filename. Should be a string variable. Ignored if save==False
  • vac2air – If True (default), it converts the wavelengths from vacuum to air
Returns:

DataStructures.xypoint instance with the telluric model. The x-axis is in nanometers and the y-axis is in fractional transmission.
__init__(debug=False, TelluricModelingDirRoot='/home/user/.TelFit/', nmolecules=12)

Initialize a modeler instance

Parameters:
  • debug – If True, it will print some extra information to the screen when making telluric models.
  • TelluricModelingDirRoot – Root directory to do the actual telluric modeling. The default installation puts this in ~/.TelFit/
  • nmolecules – The number of molecules to include in the telluric model. Probably don’t change this, and definitely don’t increase it!
Returns:

None