The ν4 bands at 11 µm: linelists for the Trans- and Cis- conformer forms of nitrous acid (HONO) in the 2019 version of the GEISA database

Using parameters of line positions and line intensities existing in the literature for the Trans- and Cis- conformer forms of nitrous acid (HONO), we generated, for the first time, a linelist of positions, intensities, and line shape parameters for the ν₄ bands of nitrous acid located at 790.117 and 851.943 cm⁻¹ for the Trans- and Cis- conformers, respectively. A validation of this linelist was performed using spectra recorded by the IASI (Interféromètre Atmosphérique de Sondage Infrarouge) satellite instrument in February 2009 during the (rather) exceptional conditions of the large Australian bush fires. This list, which is now included in the 2020 version of the GEISA database (https://geisa.aeris-data.fr/), is of potential interest for the IASI-NG (Infrared Atmospheric Sounding Interferometer – New Generation) instrument which will be launched on board the METOP-SG satellite in 2021.

本研究基于已发表文献中针对亚硝酸（nitrous acid, HONO）反式（Trans-）与顺式（Cis-）构象体的谱线位置及谱线强度参数，首次构建了亚硝酸两种构象体对应ν₄振动带的谱线位置、强度与谱线形状参数列表；其中反式构象体的ν₄谱带位于790.117 cm⁻¹，顺式构象体的对应谱带位于851.943 cm⁻¹。
本研究利用2009年2月由红外大气探测干涉仪（IASI，Interféromètre Atmosphérique de Sondage Infrarouge）卫星载荷获取的光谱数据对该谱线列表进行了验证，此次观测恰逢澳大利亚大规模丛林火灾的极为特殊气象条件。
该谱线列表已被纳入2020版GEISA数据库（https://geisa.aeris-data.fr/），对于将于2021年搭载于METOP-SG卫星发射的新一代红外大气探测干涉仪（IASI-NG，Infrared Atmospheric Sounding Interferometer – New Generation）具有潜在应用价值。