Theoretical Studies of Spectroscopic Line Mixing in Remote Sensing Applications with Theoretical Support to Improve the Accuracy of the HITRAN H2O Database

遥感应用中谱线混合的理论研究为提高 HITRAN H2O 数据库精度提供理论支持

• 批准号: 1501297
• 负责人: Qiancheng Ma
• 金额: $ 26.75万
• 依托单位: Columbia University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2015
• 资助国家: 美国
• 起止时间: 2015-09-15 至 2018-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1501297&HistoricalAwards=false
• 关键词: Theoretical; Studies; Spectroscopic; Line; Mixing

The HITRAN (high-resolution transmission) molecular absorption database currently contains some 7.4 million spectral lines of some 47 different molecular species (https://www.cfa.harvard.edu/hitran/ ) As such, along with appropriate computer codes, it can be used to accurately calculate the spectroscopic properties (transmission and emission) of light in the terrestrial (and other planetary) atmospheres. The HITRAN database is widely used by thousands of scientists and engineers, tackling a large range of scientific problems and interests. This project has two stated objectives namely : (1) continuing studying theoretical and computational treatment of line mixing for molecules that are important in remote sensing and spectroscopy, and , (2) providing theoretical support for improving the accuracy of the HITRAN database, in particular calculation of H2O lineshapes. The first objective is based on prior NSF support to develop a formalism capable of studying line mixing from interactions between a molecular absorber and molecular perturbers. The second objective represents continuing effort to improve the accuracy of spectroscopic parameters of H2O lineshapes in spectral databases, specifically HITRAN, and related compilations.

HITRAN（高分辨率透射）分子吸收数据库目前包含大约47种不同分子种类的大约740万条光谱线（www.cfa.harvard.edu/hitran/）。因此，沿着适当的计算机代码，它可以用于精确计算地球（和其他行星）大气中光的光谱特性（透射和发射）。HITRAN数据库被成千上万的科学家和工程师广泛使用，解决了大量的科学问题和兴趣。 该项目有两个既定目标，即：（1）继续研究在遥感和光谱学中重要的分子谱线混合的理论和计算处理，以及（2）为提高HITRAN数据库的准确性提供理论支持，特别是计算H2O线型。 第一个目标是基于先前NSF的支持，开发出一种能够从分子吸收剂和分子微扰剂之间的相互作用研究线混合的形式。第二个目标是继续努力提高光谱数据库，特别是HITRAN和相关汇编中H2O线型光谱参数的准确性。

项目成果

The relaxation matrix for symmetric tops with inversion symmetry. I. Effects of line coupling on self-broadened ν 1 and pure rotational bands of NH 3

具有反演对称性的对称顶的松弛矩阵。

• DOI: 10.1063/1.4952995
• 发表时间: 2016
• 期刊: The Journal of Chemical Physics
• 作者: Ma, Q.;Boulet, C.
• 通讯作者: Boulet, C.

The relaxation matrix for symmetric tops with inversion symmetry. II. Line mixing effects in the ν 1 band of NH 3

具有反演对称性的对称顶的松弛矩阵。

• DOI: 10.1063/1.4952996
• 发表时间: 2016
• 期刊: The Journal of Chemical Physics
• 作者: Boulet, C.;Ma, Q.
• 通讯作者: Ma, Q.