Effects of solar variations on the upper atmosphere

dc.contributor.author	Kockarts, G.
dc.date	1981
dc.date.accessioned	2017-09-06T09:07:42Z
dc.date.available	2017-09-06T09:07:42Z
dc.identifier.uri	https://orfeo.belnet.be/handle/internal/6166
dc.description	Several semi-empirical models of the terrestrial upper atmosphere are presently available. These models take into account solar activity effects by using the solar decimetric flux as an index. Such a procedure is a consequence of the lack of continuous determinations of the solar spectrum directly responsible for the physical structure of the upper atmosphere. Variations of the thermopause temperature are discussed. Using five sets of solar irradiances measured in the ultraviolet and in the extreme ultraviolet, the penetration of solar radiation is analyzed as a function of solar activity. Several examples of absorption profiles and ion production rates are discussed for variable conditions. Various energetic effects are also described. All computations are made for physical conditions above Scheveningen (52.08° N) where the 14th ESLAB symposium was held.
dc.language	eng
dc.title	Effects of solar variations on the upper atmosphere
dc.type	Article
dc.subject.frascati	Physical sciences
dc.audience	Scientific
dc.source.title	Solar Physics
dc.source.volume	74
dc.source.issue	2
dc.source.page	295-320
Orfeo.peerreviewed	Yes
dc.identifier.doi	10.1007/BF00154520
dc.identifier.scopus	2-s2.0-34250242643