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Published April 21, 2020 | Version 1.0
Dataset Open

Resampled Opacity Database for PICASO v2

  • 1. NASA Ames
  • 2. SETI

Description

Wavelength range of the opacities go from 0.3-14 microns. Opacities are resampled to R=10,000 from an original R=1e6 LBL calculation performed by Richard Freedman and Roxana Lupu. Because it is resampled it should only be used for R~100 models. If higher resolution is needed, please contact one of the authors. 

You can use PICASO to explore using the Opacity Factor. 

import picaso.opacity_factory as opa

molecules, pt_pairs = opa.molecular_avail(db_filename)
print(molecules)

['Na','K','Li','Cs','Rb','CH4','CO','CO2','H2O','H2S','N2O','NH3','O2','O3','PH3','TiO','VO']

pt_pairs[0:10]

[(1, 1e-06, 75.0),
 (2, 3e-06, 75.0),
 (3, 1e-05, 75.0),
 (4, 3e-05, 75.0),
 (5, 0.0001, 75.0),
 (6, 0.0003, 75.0),
 (7, 0.001, 75.0),
 (8, 0.003, 75.0),
 (9, 0.01, 75.0),
 (10, 0.03, 75.0)]

As you can see from the pt_pairs, our grid is computed on a specific pressure-temperature grid that has a total of 1060 points. 

A full tutorial on querying the database is available in the PICASO read the docs. 

NOTE: A full table of references and citations is currently being compiled for publication with the Sonora Grid (Marley+2020 in prep). We have uploaded the opacities so that users can beta test with PICASO v2. We will include a full table of references here. If you publish with these opacities in the mean time, please contact one of the authors to get a full list of the proper citations. 

 

 

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