Line parameter database H2O self-broadened 700-2000 cm-1

DLR line parameter database for self-broadened H2O in the 700 – 2000 cm-1 region. New self-broadened H2O measurements and analysis were performed with the aim of determining the H2O self-continuum. Zenodo serves as a repository for the line parameter database. Measurements in the spectral range of 700 – 2000 cm⁻¹ were conducted using a Bruker 125HR Interferometer with an attached multi-reflection cell. The spectral resolution was 0.003 cm⁻¹. Measurements were corrected regarding the wavenumber axis (→ N2O reference lines [1]), detector non-linearity, thermal self-radiation, and the instrumental line profile function (→ LINEFIT [2]). For the preparation of the parameter database, measurements were analyzed using pure H₂O pressures between 0.003 – 20 mbar, path lengths between 14 – 161 m, and temperatures of 294.2 K and 353.2 K. The line profile function of a quadratic speed-dependent Voigt which was extended for Rosenkranz line mixing was used. The following line parameters were determined for the four most abundant H₂O isotopologues H216O (main isotopologue), H218O, H217O, HD16O: Line position ν0 Line intensity S Pressure self-broadening parameter γ0,self Speed-dependence parameter of pressure self-broadening γ2,self Temperature exponent of pressure self-broadening nself Pressure self-shift parameter δ0,self Temperature dependence of pressure self-shift δT0,self First order Rosenkranz self-line-mixing parameter @ 296 K Yself Temperature dependence of first order Rosenkranz self-line-mixing YT1self Provided files: Readme for database and provided files: DLR_Database_Pure_H2O_700-2000_cm-1- Readme.docx Detailed, commented version: DLR_Database_Pure_H2O_700-2000_cm-1.xlsx Version in extended HITRAN format: DLR_Database_Pure_H2O_700-2000_cm-1.hit List of occurring HITRAN references: DLR_Database_Pure_H2O_700-2000_cm-1_HITRAN_references.html700–2000 cm⁻¹波段内自加宽水分子（H₂O）的DLR谱线参数数据库。 本研究通过全新的自加宽水分子测量与分析工作，旨在获取水分子自连续谱相关参数；该谱线参数数据库已托管至Zenodo开源仓储平台。 本次测量覆盖700–2000 cm⁻¹光谱波段，采用搭载多反射池的布鲁克（Bruker）125HR型干涉仪完成，光谱分辨率设置为0.003 cm⁻¹。测量数据已针对波数轴（参照一氧化二氮（N₂O）参考谱线[1]）、探测器非线性效应、热自辐射效应以及仪器谱线轮廓函数（参照LINEFIT工具[2]）完成校正。 在数据库构建阶段，本次测量数据的分析基于以下实验条件：纯水蒸气分压范围为0.003–20 mbar、光程长度范围为14–161 m、测试温度分别为294.2 K与353.2 K。分析过程中采用了针对Rosenkranz谱线混叠效应扩展的二次速度依赖沃伊特（Voigt）谱线轮廓函数。 针对丰度最高的四种水分子同位素异构体（其中H₂¹⁶O为主要同位素组分）：H₂¹⁶O、H₂¹⁸O、H₂¹⁷O、HD¹⁶O，本次工作确定了如下谱线参数： 谱线位置 ν₀ 谱线强度 S 压力自加宽参数 γ₀,self 压力自加宽的速度依赖参数 γ₂,self 压力自加宽的温度指数 nself 压力自位移参数 δ₀,self 压力自位移的温度依赖关系 δ_T0,self 296 K下的一阶Rosenkranz自谱线混叠参数 Yself 一阶Rosenkranz自谱线混叠的温度依赖关系 YT1self 配套文件如下： 数据库及配套文件说明文档：DLR_Database_Pure_H2O_700-2000_cm-1- Readme.docx 带详细注释的完整版本：DLR_Database_Pure_H2O_700-2000_cm-1.xlsx 扩展高分辨透射分子吸收数据库（HITRAN）格式版本：DLR_Database_Pure_H2O_700-2000_cm-1.hit HITRAN参考文献列表：DLR_Database_Pure_H2O_700-2000_cm-1_HITRAN_references.html