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arXiv 2411.03418astro-ph.EPastro-ph.IMphysics.ao-ph
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MARFA:一种用于计算行星大气分子吸收的高效逐线工具

MARFA: an Effective Line-by-line Tool For Calculating Molecular Absorption in Planetary Atmospheres

Mikhail Razumovskiy, Boris Fomin, Denis Astanin

AI总结:

MARFA 是一个开源逐线工具,通过十一网格插值和灵活参数化,在光谱数据不确定条件下高效计算行星大气分子吸收系数与截面,支持高分辨率光谱输出及 Web 与开源两种使用方式。

摘要:

我们提出 MARFA(分子大气吸收的快速灵活分析)——一个开源逐线工具,用于计算行星大气中的吸收系数和截面,特别是在光谱数据不确定且缺少连续谱函数的条件下。通过引入十一网格插值技术,MARFA 在计算大线截断的远翼贡献方面表现出良好性能。该工具支持灵活的参数化,包括线形函数、翼修正、用户自定义大气廓线,从而有助于对稀疏数据集进行快速敏感性研究。光谱以约 5e-4 cm^{-1} 的高分辨率计算,针对 HITRAN 格式线数据可用的红外和可见光谱区域进行了优化,同时可适配具有可用线参数的其他数据集。输出以两种形式表示:二进制查找表文件,可直接与辐射传输代码兼容;或人类可读格式,用于数据分析和分发。MARFA 工具以两种方式提供:通过可在 marfa.app 访问的 Web 应用程序用于入门和教学用途,以及作为公共代码库中可用的开源代码用于高级使用、开发和贡献。

英文摘要:

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 5e-4 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.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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