This paper describes the 2020 release of the GEISA database (Gestion et Etude des Informations Spectroscopiques Atmosphériques: Management and Study of Atmospheric Spectroscopic Information), developed and maintained at LMD since 1974. GEISA is the reference database for several current or planned Thermal and Short-Wave InfraRed (TIR and SWIR) space missions IASI (Infrared Atmospheric Sounding Interferometer), IASI-NG (IASI New Generation), MicroCarb (Carbon Dioxide Monitoring Mission), Merlin (MEthane Remote sensing LIdar missioN). It is actually a compilation of three databases: the “line parameters database”, the “cross-section sub-database” and the “microphysical and optical properties of atmospheric aerosols sub-database”. The new edition concerns only the line parameters dataset, with significant updates and additions implemented using the best available spectroscopic data.

The GEISA-2020 line parameters database involves 58 molecules (145 isotopic species) and contains 6,746,987 entries, in the spectral range from 10⁻⁶ to 35877 cm⁻¹. In this version, 23 molecules have been updated (with 10 new isotopic species) and 6 new molecules have been added (HONO, COFCl, CH₃F, CH₃I, RuO₄, H₂C₃H₂ (isomer of C₃H₄)) corresponding to 15 isotopic species. The compilation can be accessed through the AERIS data and services center for the atmosphere website (https://geisa.aeris-data.fr/), with the development of a powerful graphical tool and convenient searching, filtering, and plotting of data using modern technologies (PostgreSQL database, REST API, VueJS, Plotly).

Based on four examples (H₂O, O_3, O₂ and SF₆), this paper also shows how the LMD in house validation algorithm SPARTE (Spectroscopic Parameters And Radiative Transfer Evaluation) helps to evaluate, correct, reject or defer the input of new spectroscopic data into GEISA and this, thanks to iterations with researchers from different communities (spectroscopy, radiative transfer).

本文介绍了自 1974 年以来在 LMD 开发和维护的 GEISA 数据库（Gestion et Etude des Informations Spectroscopiques Atmosphériques: Management and Study of Atmospheric Spectroscopic Information）的 2020 年版本。波红外（TIR 和 SWIR）空间任务 IASI（红外大气探测干涉仪）、IASI-NG（IASI 新一代）、MicroCarb（二氧化碳监测任务）、Merlin（甲烷遥感激光雷达任务）。它实际上是三个数据库的汇编：“线参数数据库”、“截面子数据库”和“大气气溶胶微物理和光学特性子数据库”。新版本只涉及线参数数据集，

GEISA-2020 线参数数据库涉及58 个分子（145 种同位素）并包含6,746,987 个条目，光谱范围从10 ^-6到35877 cm ^-1。在此版本中，更新了 23 个分子（具有 10 个新同位素种类）并添加了 6 个新分子（HONO、COFCl、CH ₃ F、CH ₃ I、RuO ₄、H ₂ C ₃ H ₂（C _{3 的}异构体）^ h ₄)) 对应于 15 种同位素。该汇编可以通过大气网站的 AERIS 数据和服务中心 (https://geisa.aeris-data.fr/) 访问，开发了一个强大的图形工具，方便地搜索、过滤和绘制数据使用现代技术（PostgreSQL 数据库、REST API、VueJS、Plotly）。

基于四个示例（H ₂ O、O _3、 O ₂和 SF ₆），本文还展示了 LMD 内部验证算法 SPARTE（光谱参数和辐射传递评估）如何帮助评估、纠正、拒绝或推迟输入将新的光谱数据导入 GEISA，这要归功于来自不同社区的研究人员的迭代（光谱、辐射传输）。