Physics
Scientific paper
Dec 2001
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001jgr...10630381m&link_type=abstract
Journal of Geophysical Research, Volume 106, Issue A12, p. 30381-30388
Physics
5
Atmospheric Composition And Structure: Airglow And Aurora, Atmospheric Composition And Structure: Chemical Kinetic And Photochemical Properties, Atmospheric Composition And Structure: Middle Atmosphere-Composition And Chemistry, Global Change: Atmosphere
Scientific paper
The rotational temperature obtained from the rotational population distribution in the bands of the hydroxyl airglow has been shown to be a suitable proxy for the temperature at a height of 87 km [She and Lowe, 1998]. In this paper we examine in detail simultaneous observations on November 2-3, 1997, at Fort Collins, Colorado (41°N, 105°W), with both a sodium temperature lidar and the Coupling, Energetics, and Dynamics of Atmospheric Regions (CEDAR) OH mesospheric temperature mapper during which significant differences between the hydroxyl and lidar temperatures occur. The large differences are associated with a major temperature enhancement in the region of the peak of the hydroxyl emission. We model the effect on the shape of the emission rate profile of the hydroxyl airglow caused by the large temperature enhancement observed on this night by the lidar. As a result of the temperature sensitivity of the processes that give rise to the airglow, the profile shows major distortions from its normal shape. These distortions in turn lead to hydroxyl rotational temperatures that differ significantly from the 87-km lidar observations. The mean rotational temperature deduced in this way agrees well with the observed values. Such deviations in the temperature are expected to be rare, occurring only when a large temperature enhancement occurs near the peak of the airglow emission profile.
Melo Stella M. L.
She Chiao Yao
Taylor Mary Jane
Williams Bruce
No associations
LandOfFree
Effects of a large mesospheric temperature enhancement on the hydroxyl rotational temperature as observed from the ground does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Effects of a large mesospheric temperature enhancement on the hydroxyl rotational temperature as observed from the ground, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Effects of a large mesospheric temperature enhancement on the hydroxyl rotational temperature as observed from the ground will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1105043