AbstractLower-mesospheric inversion layers (MILs) were studied using the temperature profiles observed by TIMED/SABER over Cariri (7.5°S, 36.5°W), Brazil, in 2005. A total 175 MILs were identified with the maximum occurrence in April and October and the minimum in January and July. The lower MIL is located in a height region from 70 to 90km, with the peak at around 83±4km with the temperature of 205±5K, and the thickness of 4–10km. The results show large amplitudes of MILs during equinoxes and minimum in solstices, with a clear semiannual variation. A general feature of lower MIL in monthly mean profile was observed twice a year, one from February to May, and the other from August to October with a downward shift of the top level. These results suggest that formation and long persistence of MIL is an important factor to investigate propagation of atmospheric gravity waves in the mesosphere-lower thermosphere (MLT) region.
Lower-mesospheric inversion layers over brazilian equatorial region using TIMED/SABER temperature profiles
Advances in Space Research ; 41 , 9 ; 1447-1453
2007-04-24
7 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
Variability of Equatorial Mesospheric Echoes
British Library Conference Proceedings | 2003
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