{"title":"MARFA:一种有效的逐行计算行星大气中分子吸收的工具","authors":"Mikhail Razumovskiy , Boris Fomin , Denis Astanin","doi":"10.1016/j.jqsrt.2025.109599","DOIUrl":null,"url":null,"abstract":"<div><div>We present MARFA (Molecular atmospheric Absorption with Rapid and Flexible Analysis) – an open-source line-by-line tool for calculating absorption coefficients and cross-sections in planetary atmospheres, particularly under conditions of uncertain spectroscopic data and missing continuum functions. With incorporated eleven-grid interpolation technique MARFA shows good performance in computation of far-wing contributions for large line cut-offs. The tool supports flexible parameterization, including line shape functions, wing corrections, user-defined atmospheric profiles, thus, facilitating rapid sensitivity studies for sparse datasets. Spectra are calculated at a high-resolution of about <span><math><mrow><mn>5</mn><mi>⋅</mi><mn>1</mn><msup><mrow><mn>0</mn></mrow><mrow><mo>−</mo><mn>4</mn></mrow></msup></mrow></math></span> cm<sup>−1</sup>, optimized for infrared and visible spectral regions where HITRAN-formatted line data is available, yet adaptable to other datasets with available line parameters. Output is represented either in a form of binary lookup tables files, directly compatible with radiative transfer codes or in a human-readable format for data analysis and distribution. The MARFA tool is provided in two ways: through a web application accessible at <span><span>marfa.app</span><svg><path></path></svg></span> for onboarding and educational usage, and as an open-source code available in a public <span><span>repository</span><svg><path></path></svg></span> for advanced utilization, development and contributions.</div></div>","PeriodicalId":16935,"journal":{"name":"Journal of Quantitative Spectroscopy & Radiative Transfer","volume":"346 ","pages":"Article 109599"},"PeriodicalIF":1.9000,"publicationDate":"2025-08-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"MARFA: An effective line-by-line tool for calculating molecular absorption in planetary atmospheres\",\"authors\":\"Mikhail Razumovskiy , Boris Fomin , Denis Astanin\",\"doi\":\"10.1016/j.jqsrt.2025.109599\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><div>We present MARFA (Molecular atmospheric Absorption with Rapid and Flexible Analysis) – an open-source line-by-line tool for calculating absorption coefficients and cross-sections in planetary atmospheres, particularly under conditions of uncertain spectroscopic data and missing continuum functions. With incorporated eleven-grid interpolation technique MARFA shows good performance in computation of far-wing contributions for large line cut-offs. The tool supports flexible parameterization, including line shape functions, wing corrections, user-defined atmospheric profiles, thus, facilitating rapid sensitivity studies for sparse datasets. Spectra are calculated at a high-resolution of about <span><math><mrow><mn>5</mn><mi>⋅</mi><mn>1</mn><msup><mrow><mn>0</mn></mrow><mrow><mo>−</mo><mn>4</mn></mrow></msup></mrow></math></span> cm<sup>−1</sup>, optimized for infrared and visible spectral regions where HITRAN-formatted line data is available, yet adaptable to other datasets with available line parameters. Output is represented either in a form of binary lookup tables files, directly compatible with radiative transfer codes or in a human-readable format for data analysis and distribution. The MARFA tool is provided in two ways: through a web application accessible at <span><span>marfa.app</span><svg><path></path></svg></span> for onboarding and educational usage, and as an open-source code available in a public <span><span>repository</span><svg><path></path></svg></span> for advanced utilization, development and contributions.</div></div>\",\"PeriodicalId\":16935,\"journal\":{\"name\":\"Journal of Quantitative Spectroscopy & Radiative Transfer\",\"volume\":\"346 \",\"pages\":\"Article 109599\"},\"PeriodicalIF\":1.9000,\"publicationDate\":\"2025-08-09\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of Quantitative Spectroscopy & Radiative Transfer\",\"FirstCategoryId\":\"101\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S0022407325002614\",\"RegionNum\":3,\"RegionCategory\":\"物理与天体物理\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"OPTICS\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Quantitative Spectroscopy & Radiative Transfer","FirstCategoryId":"101","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0022407325002614","RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"OPTICS","Score":null,"Total":0}
MARFA: An effective line-by-line tool for calculating molecular absorption in planetary atmospheres
We present MARFA (Molecular atmospheric Absorption with Rapid and Flexible Analysis) – an open-source line-by-line tool for calculating absorption coefficients and cross-sections in planetary atmospheres, particularly under conditions of uncertain spectroscopic data and missing continuum functions. With incorporated eleven-grid interpolation technique MARFA shows good performance in computation of far-wing contributions for large line cut-offs. The tool supports flexible parameterization, including line shape functions, wing corrections, user-defined atmospheric profiles, thus, facilitating rapid sensitivity studies for sparse datasets. Spectra are calculated at a high-resolution of about cm−1, optimized for infrared and visible spectral regions where HITRAN-formatted line data is available, yet adaptable to other datasets with available line parameters. Output is represented either in a form of binary lookup tables files, directly compatible with radiative transfer codes or in a human-readable format for data analysis and distribution. The MARFA tool is provided in two ways: through a web application accessible at marfa.app for onboarding and educational usage, and as an open-source code available in a public repository for advanced utilization, development and contributions.
期刊介绍:
Papers with the following subject areas are suitable for publication in the Journal of Quantitative Spectroscopy and Radiative Transfer:
- Theoretical and experimental aspects of the spectra of atoms, molecules, ions, and plasmas.
- Spectral lineshape studies including models and computational algorithms.
- Atmospheric spectroscopy.
- Theoretical and experimental aspects of light scattering.
- Application of light scattering in particle characterization and remote sensing.
- Application of light scattering in biological sciences and medicine.
- Radiative transfer in absorbing, emitting, and scattering media.
- Radiative transfer in stochastic media.