کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5429648 | 1397363 | 2010 | 7 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Estimate of the Jâ²Jâ³ dependence of water vapor line broadening parameters Estimate of the Jâ²Jâ³ dependence of water vapor line broadening parameters](/preview/png/5429648.png)
The dependence of water line broadening coefficients on the “good” quantum numbers â angular momentum and symmetry of the upper and lower levels â is analyzed for rotational quantum numbers up to J=50. Trends are investigated separately for P-, Q-, and R-branch transitions for the atmospherically important isotopologue of water. Results are presented which were obtained using two different methods: By averaging the broadening coefficients from HITRAN-2008 for small J values and also by averaging of data calculated using a semi-empirical method for higher J. The resulting air-broadening coefficients allow water vapor spectra with millions of weak lines to be calculated with an accuracy reasonable for many applications, for example estimation of sun radiation with low resolution. Sample results of calculations are presented.
Journal: Journal of Quantitative Spectroscopy and Radiative Transfer - Volume 111, Issue 15, October 2010, Pages 2308-2314