{"description": "The present metadata documents the absorption coefficient dataset at https://eradiate.eu/data/store/stable/spectra/absorption/mono/komodo/. The dataset has been computed by the closed-source Python software package Shicho. These datasets tabulate the air volume absorption coefficient against radiation wavenumber, air temperature, air pressure and mole fractions of water vapour, carbon dioxide and ozone, from 3200 cm^-1 to 40000 cm^-1 (equivalent wavenumber range is 250 nm to 3125 nm). Absorption coefficient values come without associated uncertainties.", "version": {"codename": "komodo", "short_codename": "komodo"}, "history": {"date_created": "2023-07-09", "date_started": "2023-06-20", "date_completed": "2023-06-21", "by": "shicho, version 0.4.0"}, "shicho": {"version": "0.4.0", "url": "https://services.rayference.dansaert.be/gitlab/yvan/shicho", "radis": {"version": "0.14", "wstep": "auto", "isotope": "all", "medium": "air", "truncation": 300, "neighbour_lines": 300, "self_absorption": true, "chunksize": null, "zero_padding": -1, "pseudo_continuum_threshold": 0, "optimization": "min-RMS", "cutoff": 0.0, "verbose": false, "warnings": false, "save_memory": false, "export_populations": null, "export_lines": false, "emulate_gpu": false}, "hitran_data": "Carbon dioxide (CO2) 10th, 11th and 12th isotopologues, sulfur dioxide (SO2) 3rd and 4th isotopologues and nitrogen dioxide (NO2) second isotopologue, have been discarded.", "external_data": "O3 absorption cross section data downloaded from https://www.iup.uni-bremen.de/gruppen/molspec/downloads/serdyuchenkogorshelev5digits.dat on 2021-10-11 (last accessed on 2023-03-15) and converted to NetCDF format. See Gorshelev et al (2014) and Serdyuchenko et al (2014).", "hitran_edition": "2020", "hitran_version": "January 2023"}, "spectral_range": {"wavenumber": {"lower_bound": {"value": 3200.0, "units": "cm^-1"}, "upper_bound": {"value": 40000.0, "units": "cm^-1"}}}, "pressure_grid": {"type": "geomspace", "parameters": {"start": {"value": 0.3, "units": "pascal"}, "stop": {"value": 102000.0, "units": "pascal"}, "num": 16}}, "temperature_grid": {"type": "linspace", "parameters": {"start": {"value": 180.0, "units": "kelvin"}, "stop": {"value": 300.0, "units": "kelvin"}, "num": 8}}, "volume_fraction_grid": {"H2O": {"values": [0.0, 0.0001, 0.01, 1.0], "units": "dimensionless"}, "CO2": {"values": [0.0, 0.0004], "units": "dimensionless"}, "O3": {"values": [0.0, 1e-05], "units": "dimensionless"}}, "references": [{"type": "article-journal", "container-title": "Atmospheric Measurement Techniques", "DOI": "10.5194/amt-7-609-2014", "ISSN": "1867-1381", "issue": "2", "language": "English", "note": "publisher: Copernicus GmbH", "page": "609-624", "source": "amt.copernicus.org", "title": "High spectral resolution ozone absorption cross-sections – Part 1: Measurements, data analysis and comparison with previous measurements around 293 K", "title-short": "High spectral resolution ozone absorption cross-sections – Part 1", "URL": "https://amt.copernicus.org/articles/7/609/2014/amt-7-609-2014.html", "volume": "7", "author": [{"family": "Gorshelev", "given": "V."}, {"family": "Serdyuchenko", "given": "A."}, {"family": "Weber", "given": "M."}, {"family": "Chehade", "given": "W."}, {"family": "Burrows", "given": "J. P."}], "accessed": {"date-parts": [["2021", 12, 2]]}, "issued": {"date-parts": [["2014", 2, 24]]}}, {"type": "article-journal", "abstract": "Accurate synthetic spectra that rely on large Line-By-Line (LBL)-databases are used in a wide range of applications such as high temperature combustion, atmospheric re-entry, planetary surveillance and laboratory plasmas. Conventionally synthetic spectra are calculated by computing a lineshape for every spectral line in the database and adding those together, which may take multiple hours for large databases. In this paper we propose a new approach for spectral synthesis based on an integral transform: the synthetic spectrum is calculated as the integral over the product of a Voigt profile and a newly proposed three-dimensional \u201clineshape distribution function\u201d, which is a function of spectral position and Gaussian- & Lorentzian width coordinates. A fast discrete version of this transform based on the Fast Fourier Transform (FFT) is proposed, which improves performance compared to the conventional approach by several orders of magnitude while maintaining accuracy. Strategies that minimize the discretization error are discussed. A Python implementation of the method is compared against state-of-the-art spectral code RADIS, and is since adopted as RADIS's default synthesis method. The synthesis of a benchmark CO2 spectrum consisting of 1.8\u00a0M spectral lines and 200k spectral points took only 3.1\u00a0s using the proposed method (1011 lines\u00a0\u00d7\u00a0spectral points/s), a factor \u223c300 improvement over the state-of-the-art, with the relative improvement generally increasing for higher number of lines and/or number of spectral points. An experimental GPU-implementation of the method was also benchmarked, which demonstrated another 2~3 orders performance increase, achieving up to 5 \u22c5 1014 lines\u00a0\u00d7\u00a0spectral points/s.", "container-title": "Journal of Quantitative Spectroscopy and Radiative Transfer", "DOI": "10.1016/j.jqsrt.2020.107476", "ISSN": "0022-4073", "journalAbbreviation": "Journal of Quantitative Spectroscopy and Radiative Transfer", "language": "en", "page": "107476", "source": "ScienceDirect", "title": "A discrete integral transform for rapid spectral synthesis", "URL": "https://www.sciencedirect.com/science/article/pii/S0022407320310049", "volume": "261", "author": [{"family": "Bekerom", "given": "D. C. M.", "non-dropping-particle": "van den"}, {"family": "Pannier", "given": "E."}], "accessed": {"date-parts": [["2021", 4, 14]]}, "issued": {"date-parts": [["2021", 3, 1]]}}, {"type": "article-journal", "abstract": "An open-source nonequilibrium emission and absorption infrared line-by-line code is presented. RADIS is built around the HITRAN, HITEMP and CDSD databases for molecules in their electronic ground state. Energy levels are read from tabulated databases or calculated from Dunham expansions. Boltzmann, Treanor, and arbitrary vibrational distributions can be generated. In its present version, nonequilibrium spectra can be computed for CO2 and CO, and equilibrium spectra can be computed for all species of the HITRAN database. New species can be added without modification to the core code. Several optimization strategies are described that reduce computation times of high-temperature, high-resolution spectra with millions of lines down to less than a minute. Additionally, RADIS includes a line survey tool, a built-in look-up database to reduce convergence times when fitting experimental spectra, and a multi-slab module to simulate line-of-sight experiments. Validation cases against existing spectral codes and experimental results from various plasma sources are presented. Finally, RADIS is applied to improve the modeling of the radiation from a plasma torch and a nonequilibrium expansion-tube experiment. RADIS is distributed under LGPLv3 license [1].", "container-title": "Journal of Quantitative Spectroscopy and Radiative Transfer", "DOI": "10.1016/j.jqsrt.2018.09.027", "ISSN": "0022-4073", "journalAbbreviation": "Journal of Quantitative Spectroscopy and Radiative Transfer", "language": "en", "page": "12-25", "source": "ScienceDirect", "title": "RADIS: A nonequilibrium line-by-line radiative code for CO2 and HITRAN-like database species", "title-short": "RADIS", "URL": "https://www.sciencedirect.com/science/article/pii/S0022407318305867", "volume": "222-223", "author": [{"family": "Pannier", "given": "Erwan"}, {"family": "Laux", "given": "Christophe O."}], "accessed": {"date-parts": [["2021", 4, 14]]}, "issued": {"date-parts": [["2019", 1, 1]]}}, {"type": "article-journal", "abstract": "An atmospheric data base consisting of volume mixing ratios (00 to 120km) for twenty eight (28) minor and trace gases has been assembled for use with spectral radiance transmittance models. Six reference atmospheres, each defining temperature, pressure and density as a function of altitude (selected from the U.S. Standard Supplements, 1966 and the U.S. Standard Atmosphere, 1976) provide a range of\nclimatological choices. Analogous zonal-mean descriptions for 2O, O3, N2O, CO, and CH4 have been subsequently adapted from satellite data and/or dynamical-photochemical analyses. The remaining species are defined by single profiles, usually appropriate for U.S. Standard conditions. Because the entire profile set is preferentially based on available measurements, explicit photochemical consistency between the different species has not been maintained.", "container-title": "AFGL-TR-0208 Environemental Research papers", "journalAbbreviation": "AFGL-TR-0208 Environemental Research papers", "source": "NASA ADS", "title": "AFGL atmospheric constituent profiles (0.120km)", "URL": "http://adsabs.harvard.edu/abs/1986afgl.rept.....A", "author": [{"family": "Anderson", "given": "G. P."}, {"family": "Clough", "given": "S. A."}, {"family": "Kneizys", "given": "F. X."}, {"family": "Chetwynd", "given": "J. H."}, {"family": "Shettle", "given": "E. P."}], "accessed": {"date-parts": [["2021", 1, 14]]}, "issued": {"date-parts": [["1986", 5, 1]]}}, {"type": "article-journal", "container-title": "Atmospheric Measurement Techniques", "DOI": "10.5194/amt-7-625-2014", "ISSN": "1867-1381", "issue": "2", "language": "English", "note": "publisher: Copernicus GmbH", "page": "625-636", "source": "amt.copernicus.org", "title": "High spectral resolution ozone absorption cross-sections – Part 2: Temperature dependence", "title-short": "High spectral resolution ozone absorption cross-sections – Part 2", "URL": "https://amt.copernicus.org/articles/7/625/2014/", "volume": "7", "author": [{"family": "Serdyuchenko", "given": "A."}, {"family": "Gorshelev", "given": "V."}, {"family": "Weber", "given": "M."}, {"family": "Chehade", "given": "W."}, {"family": "Burrows", "given": "J. P."}], "accessed": {"date-parts": [["2022", 12, 19]]}, "issued": {"date-parts": [["2014", 2, 24]]}}, {"type": "article-journal", "container-title": "Journal of Quantitative Spectroscopy and Radiative Transfer", "DOI": "10.1016/j.jqsrt.2021.107949", "ISSN": "0022-4073", "journalAbbreviation": "Journal of Quantitative Spectroscopy and Radiative Transfer", "language": "en", "page": "107949", "source": "ScienceDirect", "title": "The HITRAN2020 molecular spectroscopic database", "URL": "https://www.sciencedirect.com/science/article/pii/S0022407321004416", "volume": "277", "author": [{"family": "Gordon", "given": "I. E."}, {"family": "Rothman", "given": "L. S."}, {"family": "Hargreaves", "given": "R. J."}, {"family": "Hashemi", "given": "R."}, {"family": "Karlovets", "given": "E. V."}, {"family": "Skinner", "given": "F. M."}, {"family": "Conway", "given": "E. K."}, {"family": "Hill", "given": "C."}, {"family": "Kochanov", "given": "R. V."}, {"family": "Tan", "given": "Y."}, {"family": "Wcis\u0142o", "given": "P."}, {"family": "Finenko", "given": "A. A."}, {"family": "Nelson", "given": "K."}, {"family": "Bernath", "given": "P. F."}, {"family": "Birk", "given": "M."}, {"family": "Boudon", "given": "V."}, {"family": "Campargue", "given": "A."}, {"family": "Chance", "given": "K. V."}, {"family": "Coustenis", "given": "A."}, {"family": "Drouin", "given": "B. J."}, {"family": "Flaud", "given": "J. \u2013M."}, {"family": "Gamache", "given": "R. R."}, {"family": "Hodges", "given": "J. T."}, {"family": "Jacquemart", "given": "D."}, {"family": "Mlawer", "given": "E. J."}, {"family": "Nikitin", "given": "A. V."}, {"family": "Perevalov", "given": "V. I."}, {"family": "Rotger", "given": "M."}, {"family": "Tennyson", "given": "J."}, {"family": "Toon", "given": "G. C."}, {"family": "Tran", "given": "H."}, {"family": "Tyuterev", "given": "V. G."}, {"family": "Adkins", "given": "E. M."}, {"family": "Baker", "given": "A."}, {"family": "Barbe", "given": "A."}, {"family": "Can\u00e8", "given": "E."}, {"family": "Cs\u00e1sz\u00e1r", "given": "A. G."}, {"family": "Dudaryonok", "given": "A."}, {"family": "Egorov", "given": "O."}, {"family": "Fleisher", "given": "A. J."}, {"family": "Fleurbaey", "given": "H."}, {"family": "Foltynowicz", "given": "A."}, {"family": "Furtenbacher", "given": "T."}, {"family": "Harrison", "given": "J. J."}, {"family": "Hartmann", "given": "J. \u2013M."}, {"family": "Horneman", "given": "V. \u2013M."}, {"family": "Huang", "given": "X."}, {"family": "Karman", "given": "T."}, {"family": "Karns", "given": "J."}, {"family": "Kassi", "given": "S."}, {"family": "Kleiner", "given": "I."}, {"family": "Kofman", "given": "V."}, {"family": "Kwabia\u2013Tchana", "given": "F."}, {"family": "Lavrentieva", "given": "N. N."}, {"family": "Lee", "given": "T. J."}, {"family": "Long", "given": "D. A."}, {"family": "Lukashevskaya", "given": "A. A."}, {"family": "Lyulin", "given": "O. M."}, {"family": "Makhnev", "given": "V. Yu."}, {"family": "Matt", "given": "W."}, {"family": "Massie", "given": "S. T."}, {"family": "Melosso", "given": "M."}, {"family": "Mikhailenko", "given": "S. N."}, {"family": "Mondelain", "given": "D."}, {"family": "M\u00fcller", "given": "H. S. P."}, {"family": "Naumenko", "given": "O. V."}, {"family": "Perrin", "given": "A."}, {"family": "Polyansky", "given": "O. L."}, {"family": "Raddaoui", "given": "E."}, {"family": "Raston", "given": "P. L."}, {"family": "Reed", "given": "Z. D."}, {"family": "Rey", "given": "M."}, {"family": "Richard", "given": "C."}, {"family": "T\u00f3bi\u00e1s", "given": "R."}, {"family": "Sadiek", "given": "I."}, {"family": "Schwenke", "given": "D. W."}, {"family": "Starikova", "given": "E."}, {"family": "Sung", "given": "K."}, {"family": "Tamassia", "given": "F."}, {"family": "Tashkun", "given": "S. A."}, {"family": "Vander Auwera", "given": "J."}, {"family": "Vasilenko", "given": "I. A."}, {"family": "Vigasin", "given": "A. A."}, {"family": "Villanueva", "given": "G. L."}, {"family": "Vispoel", "given": "B."}, {"family": "Wagner", "given": "G."}, {"family": "Yachmenev", "given": "A."}, {"family": "Yurchenko", "given": "S. N."}], "accessed": {"date-parts": [["2023", 3, 10]]}, "issued": {"date-parts": [["2022", 1, 1]]}}]}