Calculation of Line Shifts and Line Widths for Atmospherically Important Gases: Application to H2O and CH4 Perturbed by N2 or O2

一个计算压力展宽的理论框架 半宽度，大气不确定度约为5% 将培育重要品种。 计算也 预计会产生压力引起的谱线偏移。 两种方法 计算水蒸气的半宽度和谱线位移 受氮或氧干扰的气体将与 实验测量，以及导致 最佳协议将用于生成数据库， 大气中重要的水汽转换。 接下来 计算将扩展到受氮扰动的甲烷， 氧气 这项研究的动机是需要增加 提高遥感测量的可信度， 确定温室气体的辐射强迫。 这项调查将为进一步的研究奠定基础。 其他大气的半宽和谱线位移的计算 物种

A theoretical framework to calculate pressure-broadened halfwidths with an uncertainty of ~ 5% for atmospherically important species will be developed. Calculations are also expected to yield pressure-induced line shifts. Two approaches to computing the halfwidth and line shift for water vapor perturbed by nitrogen or oxygen will be compared with experimental measurements, and the method that results in the best agreement will be used to generate a database for atmospherically important transitions of water vapor. Next, the calculations will be extended to methane perturbed by nitrogen or oxygen. The research is motivated by the need for increased confidence in remote sensing measurements and a better determination of the radiative forcings of greenhouse gases. This investigation will lay the foundation for further calculations of halfwidths and line shifts for other atmospheric species.