摘要: Radio wave absorption data for a large number of stations have been used to study the semiannual variations (SAV–s) in mesosphere. Temperature 50-km levels also utilized similar study. While temperature show systematic variation all latitudes investigated, do not yield phase relationship with latitude. However, maximum SAV is found occur at high-latitude station. The different behavior SAV's latitude could perhaps be explained terms mesospheric composition changes resulting from circulation pattern lower atmosphere.
harvard.edu
osti.gov
agu.org参考文章(25)
J.B Gregory, A.H Manson, Seasonal variations of electron densities below 100 km at mid-latitudes—III Journal of Atmospheric and Terrestrial Physics. ,vol. 32, pp. 837- 852 ,(1970) , 10.1016/0021-9169(70)90032-2
L. G. Jacchia, Semiannual variation in the heterosphere: A reappraisal Journal of Geophysical Research. ,vol. 76, pp. 4602- 4607 ,(1971) , 10.1029/JA076I019P04602
H Volland, C Wulf-Mathies, W Priester, On the annual and semiannual variations of the thermospheric density Journal of Atmospheric and Terrestrial Physics. ,vol. 34, pp. 1053- 1063 ,(1972) , 10.1016/0021-9169(72)90094-3
L.G. Jacchia, J.W. Slowey, I.G. Campbell, A study of the semi-annual density variation in the upper atmosphere from 1958 to 1966, based on satellite drag analysis Planetary and Space Science. ,vol. 17, pp. 49- 60 ,(1969) , 10.1016/0032-0633(69)90122-6
H.G. Mayr, H. Volland, Magnetic storm effects in the neutral composition Planetary and Space Science. ,vol. 20, pp. 379- 393 ,(1972) , 10.1016/0032-0633(72)90036-0
H Volland, H.G Mayr, A three-dimensional model of thermosphere dynamics—III. Planetary waves Journal of Atmospheric and Terrestrial Physics. ,vol. 34, pp. 1797- 1816 ,(1972) , 10.1016/0021-9169(72)90035-9
RICHARD J. REED, SOME FEATURES OF THE ANNUAL TEMPERATURE REGIME IN THE TROPICAL STRATOSPHERE Monthly Weather Review. ,vol. 90, pp. 211- 215 ,(1962) , 10.1175/1520-0493(1962)090<0211:SFOTAT>2.0.CO;2
Douglas Haig McIntosh, On the Annual Variation of Magnetic Disturbance Philosophical Transactions of the Royal Society A. ,vol. 251, pp. 525- 552 ,(1959) , 10.1098/RSTA.1959.0010
A.P. Mitra, A review of D-region processes in non-polar latitudes Journal of Atmospheric and Solar-Terrestrial Physics. ,vol. 30, pp. 1065- 1114 ,(1968) , 10.1016/S0021-9169(68)80001-7
Allen E. Cole, Suggestion of a second isopycnic level at 80 to 90 kilometers over Churchill, Canada Journal of Geophysical Research. ,vol. 66, pp. 2773- 2778 ,(1961) , 10.1029/JZ066I009P02773