NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Back to Results
Equatorial composition in the 137- to 225-km region from the San Marco 3 mass spectrometerThe neutral atmospheric composition experiment (Nace) carried by the San Marco 3 (SM 3) satellite measured the equatorial atmospheric composition during the reentry period of Nov. 21-28, 1971. The mass density and molecular nitrogen density measured by the Nace are in agreement with values measured by rocket experiments and inferred from satellite experiments. The average total oxygen content measured by Nace is 30% below the value suggested by von Zahn at 150-km altitude. When it is assumed that his value for the molecular oxygen density at 150 km represents averaged rocket results applicable to the equatorial thermosphere, the Nace total oxygen content results in an atomic oxygen concentration comparable to the mean value of Cira (1965). The Nace helium measurements interpreted in terms of an altitude profile have an altitude distribution similar to that of molecular nitrogen below 165 km.
Document ID
19740047918
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Newton, G. P.
Kasprzak, W. T.
Pelz, D. T.
(NASA Goddard Space Flight Center Greenbelt, Md., United States)
Date Acquired
August 7, 2013
Publication Date
May 1, 1974
Publication Information
Publication: Journal of Geophysical Research
Volume: 79
Subject Category
Geophysics
Accession Number
74A30668
Distribution Limits
Public
Copyright
Other

Available Downloads

There are no available downloads for this record.
No Preview Available