P. M. Banks and G. Kockarts (Auth.)'s Aeronomy PDF

By P. M. Banks and G. Kockarts (Auth.)

ISBN-10: 0120778017

ISBN-13: 9780120778010

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Nucl. Sei. 8, 243 (1958). 51. W. F. Libby, Res. Geochem. 151, 33 (1959). 52. W. B. Clarke, M. A. Beg, and H. Craig, Earth Planet. Sei. Lett. 6, 213 (1969). 53. H. Craig, / . Geol. 62, 115 (1954). 54. H. Craig, in Earth Science and Meteoritics (J. Geiss and E. D. ). Chapter 6, p. 103. , Amsterdam, 1963. 55. H. D. Babcock and L. Herzberg, Astrophys. J. 108, 167 (1948). 56. G. A. Lane and M. Dole, Science 123, 574 (1956). 1 Introduction Thirty years ago it was generally accepted that the composition of the stratospheric air varied with altitude because it was believed that helium and oxygen samples taken above 20 km showed departures from a mixing distribution toward partial diffusive separation.

2 as one of the principle constituents along with molecular nitrogen and oxygen since its volume ratio is about 3xl0~ 4 . Other molecules are true minor constituents even though they may have important roles in the atmosphere. It is not yet possible to obtain a clear picture of the behavior of the molecular constituents in the homosphere since few spectroscopic observations have been made and systematic satellite observations are just beginning [24, 25]. 4 gives a list of some of the molecules which should be present throughout the homosphere.

CIRA 1965. , Amsterdam, 1965. 12. S. Teweles, in Meteorological Observations above 30 Kilometers, pp. 15-35. C. (1964). 13. B. J. Conrath, R. A. Hanel, V. G. Kunde, and C. Prabhakara, /. Geophys. Res. 75, 5831 (1970). 1 Introduction The transition from the homosphere to the heterosphere involves a competition between mixing and diffusive processes. The former tends to keep the mean molecular mass constant with altitude, while the latter acts to let each gas constituent assume a density and pressure distribution consistent with its own mass and temperature.

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Aeronomy by P. M. Banks and G. Kockarts (Auth.)

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