Hi Michie, It looks like there are just no lines available from HITRAN (which our catalog is based on) in that region (I attached a zoomed in plot in case others want to chime in). Can you link to a plot that shows the feature you're expecting?
Cheers, Oliver > On 16. Jun 2025, at 19:30, De Vera, Michie Vianca Dichaves via arts_users.mi > <[email protected]> wrote: > > Good day! > I am new to ARTS and have been using the newest version on Python. I’m > trying to plot the absorption cross section for ozone as a function of > wavelength. However, I noticed that I’m only getting some of the features > right. As seen in the image attached, for example, there should be a dip in > the values around 6.3 microns based on textbook images, but I don’t see that > here. Other wavelengths should also have dips that are not seen in the image. > I have tried to increase the spectral resolution, but I still do not get > these features. > Below is part of the Python code I’m using to get the absorption coefficient > values. I tried to follow one of the example files, but I would appreciate > any help to see if I’m missing something. > ws = pyarts.workspace.Workspace() > ws.abs_speciesSet(species=[‘O3’]) > ws.abs_lines_per_speciesReadSpeciesSplitCatalog(basename="/dir/arts/arts-cat-data-2.6.14/lines/") > ws.lbl_checkedCalc() > ws.propmat_clearsky_agendaAuto() > ws.jacobian_quantities = [] > ws.select_abs_species = [] > ws.f_grid = frq_grid > ws.rtp_mag = [] > ws.rtp_los = [] > ws.rtp_pressure = 100681 > ws.rtp_temperature = 285.77 > ws.rtp_nlte = pyarts.arts.EnergyLevelMap() > ws.rtp_vmr = [0.2676793e-07] > ws.stokes_dim = 1 > ws.AgendaExecute(a=ws.propmat_clearsky_agenda) > Thank you so much! > Sincerely, > Michie<arts_O3.png>
