Abstract

Contributions of the absorption by water dimers to the continuum absorption by water vapor within the IR region are analyzed. They are defined as the difference between experimental data and asymptotic line wing theory (ALWT) calculations. In the ALWT calculations, the line profiles are used with parameters fitted to the Burch experimental data and to the FTIR measurements in the IR water vapor windows. Calculations with the line profile which describes the Burch data in the 2000–3000 cm⁻¹ range are in a good agreement with CRDS measurements between other IR water vapor bands. Both profiles provide close absorption values within the water vapor bands presumably due to the contribution of stable dimers.

中文翻译：

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红外区水蒸气带内的二聚体吸收

摘要

分析了二聚体的吸收对红外区域内水蒸气连续吸收的贡献。它们被定义为实验数据与渐近线翼理论（ALWT）计算之间的差异。在ALWT计算中，将线轮廓与适合Burch实验数据和红外水蒸气窗口中FTIR测量的参数一起使用。用线轮廓描述在2000–3000 cm ^-1范围内的Burch数据的计算与其他IR水汽波段之间的CRDS测量非常吻合。可能是由于稳定的二聚体的贡献，两个曲线在水蒸气带内提供了接近的吸收值。