NDLI: Global characteristics in the diurnal variations of the thermospheric temperature and composition

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Global characteristics in the diurnal variations of the thermospheric temperature and composition

Content Provider	NASA Technical Reports Server (NTRS)
Author	Carignan, G. R. Mayr, H. G. Reber, C. A. Hedin, A. E.
Copyright Year	1973
Description	Global characteristics in the diurnal components of OGO-6 neutral mass spectrometer measurements near 450 km are discussed qualitatively as well as quantitatively on the basis of a theoretical model. Observations and conclusion are summarized: (1) During equinox the temperature maximum occurs after 1600 LT at the equator and shifts toward 1500 LT at the poles, while the oxygen concentration at 450 km peaks about one hour earlier. (2) There is general agreement between the magnitudes and phases of the diurnal, semidiurnal and terdiuranal temperature components at 450 km from theory as well as OGO-6 and radar backscatter measurements. (3) The maximum in the diurnal variation of He is observed near 1030 LT consistent with theoretical results which further emphasize the importance of dynamics and diffusion. (4) During solstice conditions the diurnal temperature maximum shifts toward later local times, in substantial agreement with radar temperature measurements. (5) the temperature-oxygen density phase difference at 450 km is observed to decrease with latitude from the winter toward the summer hemisphere, where oxygen may even peak after the temperature at high latitudes.
File Size	1417502
Page Count	43
File Format	PDF
Alternate Webpage(s)	http://archive.org/details/NASA_NTRS_Archive_19730018608
Archival Resource Key	ark:/13960/t79s6hx9c
Language	English
Publisher Date	1973-05-01
Access Restriction	Open
Subject Keyword	Geophysics Temperature Measurement Thermosphere Mass Spectrometers Atmospheric Temperature Diurnal Variations Ogo-6 Mathematical Models Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science
Content Type	Text
Resource Type	Technical Report

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