High accuracy line intensities for carbon dioxide

二氧化碳的高精度线强度

• 批准号: NE/J010316/1
• 负责人: Jonathan Tennyson
• 金额: $ 27.91万
• 依托单位: University College London
• 依托单位国家: 英国
• 项目类别: Research Grant
• 财政年份: 2012
• 资助国家: 英国
• 起止时间: 2012 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=NE%2FJ010316%2F1
• 关键词: accuracy; line; intensities; carbon; dioxide

All CO2 remote sensing activity, from both the ground and space, relies on monitoring how CO2 absorbs light. All this monitoring is therefore heavily dependent on understanding the absorption properties of the CO2 molecule which is usually obtained by measurements performed in the laboratory. In particular the accurate knowledge of the strength of individual absorption lines is crucial to determining how much CO2 is present and allowing the atmospheric data to be interpreted. Without high accuracy values for line intensities, reliable CO2 retrievals are simply not possible. Particularly with their emphasis on variation of CO2 concentrations with time, current missions and proposed missions require CO2 line intensities to be determined to significantly better than 1% accuracy if they are to fulfill their stated goals: intensities accurate to better than 0.5% are really required. Current line intensities measured in the laboratory simply do not gives this level of accuracy: most are accurate to about 5% with a few high quality measurements being good to 1 - 3%. Hence current cO2 retrievals values are limited by the available laboratory data. The aim of this proposal is to provide an accurate theoretical solution to the problem of CO2 line intensities based on the application of high accuracy, first principles quantum mechanical calculations for the intensities and experimental data for the line positions. The resulting new lists of CO2 transition intensities will be made widely available and, in particular, used to inform atmospheric databases which are used for the majority of atmospheric applications of molecular spectroscopy.

从地面和太空进行的所有二氧化碳遥感活动都依赖于监测二氧化碳如何吸收光线。因此，所有这些监测在很大程度上取决于对CO2分子吸收特性的了解，而CO2分子吸收特性通常是通过在实验室中进行测量获得的。具体而言，准确了解各个吸收线的强度对于确定二氧化碳的含量和解释大气数据至关重要。没有高精度的谱线强度值，可靠的CO2反演是根本不可能的。特别是由于他们强调CO2浓度随时间的变化，当前的任务和拟议的任务需要确定CO2线强度，以显著优于1%的准确度，如果他们要实现他们的既定目标：强度准确到优于0.5%是真正需要的。目前在实验室中测量的谱线强度根本不能给出这种精度水平：大多数精确到约5%，少数高质量测量值精确到1 - 3%。因此，当前的cO2检索值受到可用实验室数据的限制。本建议的目的是提供一个准确的理论解决方案的问题的CO2线强度的基础上应用的高精度，第一原理量子力学计算的强度和实验数据的线位置。由此产生的CO2跃迁强度的新列表将被广泛提供，特别是用于通知大气数据库，用于分子光谱学的大多数大气应用。

项目成果

The HITRAN2012 molecular spectroscopic database

• DOI: 10.1016/j.jqsrt.2013.07.002
• 发表时间: 2013-11-01
• 期刊: JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER
• 影响因子: 2.3
• 作者: Rothman, L. S.;Gordon, I. E.;Wagner, G.
• 通讯作者: Wagner, G.

Accurate line intensities for water transitions in the infrared: Comparison of theory and experiment

红外水跃迁的精确线强度：理论与实验的比较

• DOI: 10.1016/j.jqsrt.2017.03.040
• 发表时间: 2017
• 期刊: Journal of Quantitative Spectroscopy & Radiative Transfer
• 影响因子: 2.3
• 作者: Birk M;Wagner G;Loos J;Lodi L;Polyansky OL;Kyuberis AA;Zobov NF;Tennyson J
• 通讯作者: Tennyson J

A new relational database structure and online interface for the HITRAN database

• DOI: 10.1016/j.jqsrt.2013.04.027
• 发表时间: 2013-11-01
• 期刊: JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER
• 影响因子: 2.3
• 作者: Hill, Christian;Gordon, Iouli E.;Tennyson, Jonathan
• 通讯作者: Tennyson, Jonathan

Room temperature line lists for deuterated water

氘化水的室温线列表

• DOI: 10.1016/j.jqsrt.2017.06.026
• 发表时间: 2017
• 期刊: Journal of Quantitative Spectroscopy and Radiative Transfer
• 影响因子: 2.3
• 作者: Kyuberis A

An experimental water line list at 1950 K in the 6250-6670 cm - 1 region

6250-6670 cm - 1 区域 1950 K 实验水线表

• DOI: 10.1016/j.jqsrt.2017.10.016
• 发表时间: 2018
• 期刊: Journal of Quantitative Spectroscopy and Radiative Transfer
• 影响因子: 2.3
• 作者: Rutkowski L