Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.5194/acp-20-333-2020 |
Modelled effects of temperature gradients and waves on the hydroxyl rotational distribution in ground-based airglow measurements | |
Franzen, Christoph1,2; Espy, Patrick Joseph1,2; Hibbins, Robert Edward1,2 | |
2020-01-09 | |
发表期刊 | ATMOSPHERIC CHEMISTRY AND PHYSICS |
ISSN | 1680-7316 |
EISSN | 1680-7324 |
出版年 | 2020 |
卷号 | 20期号:1页码:333-343 |
文章类型 | Article |
语种 | 英语 |
国家 | Norway |
英文摘要 | Spectroscopy of the hydroxyl (OH) airglow has been a commonly used way to remotely sense temperatures in the mesopause region for many decades. This technique relies on the OH rotational state populations to be thermalized through collisions with the surrounding gas into a Boltzmann distribution characterized by the local temperature. However, deviations of the rotational populations from a Boltzmann distribution characterized by a single temperature have been observed and attributed to an incomplete thermalization of the OH from its initial, non-thermodynamic-equilibrium distribution. Here we address an additional cause for the apparent amount of excess population in the higher rotational levels of the OH airglow brought about by integrating these OH emissions through vertical gradients in the atmospheric temperature. We find that up to 40% of the apparent excess population, currently attributed to incomplete thermalization, can be due to the vertical temperature gradients created by waves. Additionally, we find that the populations of the different upper vibrational levels are affected differently. These effects need to be taken into account in order to assess the true extent of non-thermodynamic-equilibrium effects on the OH rotational populations. |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000506336400001 |
WOS关键词 | VIBRATIONAL-RELAXATION ; ENERGY-DISTRIBUTION ; KINETIC-PARAMETERS ; REACTION-PRODUCTS ; OH MEASUREMENTS ; CHEMISTRY ; DYNAMICS ; ALTITUDE ; TIDES ; STATE |
WOS类目 | Environmental Sciences ; Meteorology & Atmospheric Sciences |
WOS研究方向 | Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/278546 |
专题 | 地球科学 |
作者单位 | 1.Norwegian Univ Sci & Technol NTNU, N-7491 Trondheim, Norway; 2.Univ Bergen, Dept Phys & Technol, BCSS, Bergen, Norway |
推荐引用方式 GB/T 7714 | Franzen, Christoph,Espy, Patrick Joseph,Hibbins, Robert Edward. Modelled effects of temperature gradients and waves on the hydroxyl rotational distribution in ground-based airglow measurements[J]. ATMOSPHERIC CHEMISTRY AND PHYSICS,2020,20(1):333-343. |
APA | Franzen, Christoph,Espy, Patrick Joseph,&Hibbins, Robert Edward.(2020).Modelled effects of temperature gradients and waves on the hydroxyl rotational distribution in ground-based airglow measurements.ATMOSPHERIC CHEMISTRY AND PHYSICS,20(1),333-343. |
MLA | Franzen, Christoph,et al."Modelled effects of temperature gradients and waves on the hydroxyl rotational distribution in ground-based airglow measurements".ATMOSPHERIC CHEMISTRY AND PHYSICS 20.1(2020):333-343. |
条目包含的文件 | 条目无相关文件。 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。
修改评论