Dr. Ch. Jacobi LIM Dr. D. Kuerschner Institute for Geophysics and Geology Collm Observatory Results from upper atmosphere wind measurements (52N, 15E) January 2000 ---------------------------------------------------------- Analyses using monthly median half-hourly winds T2z in UT Winds and amplitudes in m/s Frequency voz vom v2z T2z January 2000 Mean 15 -7 9 8.7 virtual height 96 km ---------------------------------------------------------- Results from daily analyses of wind parameters derived from mean wind values on 3 frequencies January 2000 Semidiurnal tidal phase in local mean time (LMT) = UT+1 Date voz vom v2z T2z h' 1./ 2. 1.00 17.2 -3.2 17.6 11.2 96.2 2./ 3. 1.00 17.4 -8.5 15.5 12.1 93.6 3./ 4. 1.00 18.7 5.2 8.1 10.9 91.8 4./ 5. 1.00 23.2 -3.4 6.7 10.5 92.7 5./ 6. 1.00 13.6 -1.9 10.6 10.3 97.4 6./ 7. 1.00 13.9 -4.3 16.2 10.1 96.9 7./ 8. 1.00 17.0 -2.4 15.7 10.4 94.5 8./ 9. 1.00 14.7 -3.6 7.4 8.5 95.7 9./10. 1.00 18.2 -7.0 11.2 9.3 97.8 10./11. 1.00 19.4 2.1 9.0 7.5 100.0 11./12. 1.00 11.0 -9.5 10.9 8.9 101.0 12./13. 1.00 16.2 .5 15.4 8.9 96.7 13./14. 1.00 -2.6 -8.1 16.6 9.4 94.2 14./15. 1.00 -8.1 -17.1 20.4 9.6 94.8 15./16. 1.00 -12.3 -14.6 15.9 9.5 94.1 16./17. 1.00 -10.5 -19.3 7.2 9.3 95.2 17./18. 1.00 -3.0 -5.7 11.9 10.2 92.4 18./19. 1.00 -3.8 -7.0 8.1 5.8 96.0 19./20. 1.00 10.5 -4.0 1.3 11.0 103.6 20./21. 1.00 9.7 -13.5 3.4 8.4 100.5 21./22. 1.00 17.3 -10.6 7.9 9.8 95.8 22./23. 1.00 -2.8 -6.5 16.4 6.6 105.7 23./24. 1.00 18.2 -4.1 11.5 9.1 92.3 24./25. 1.00 20.3 -3.8 3.9 8.7 101.2 25./26. 1.00 24.1 -9.0 10.6 11.3 96.3 26./27. 1.00 22.4 -7.8 4.8 10.3 97.5 27./28. 1.00 9.6 -5.7 8.7 9.5 98.8 28./29. 1.00 4.8 -6.0 18.8 8.6 100.1 29./30. 1.00 17.2 -.2 14.0 8.3 101.6 30./31. 1.00 1.6 -11.3 7.6 10.8 97.0 31. 1./ 1. 2.00 23.0 -.7 11.6 10.9 94.6 ---------------------------------------------------------- Monthly median winds and heights - January 2000 Time vz vm N h' lower upper N (UT) quartiles .25 6 -14 31 99 94 105 30 .75 10 -10 31 100 97 105 29 1.25 6 -11 31 100 97 104 28 1.75 -5 -11 31 100 98 104 27 2.25 2 -7 31 99 97 104 28 2.75 8 -6 31 99 97 103 27 3.25 2 -6 31 100 96 105 29 3.75 7 -3 31 98 96 103 30 4.25 -2 0 31 97 94 105 30 4.75 11 7 31 101 96 105 29 5.25 7 5 31 100 95 104 30 5.75 21 4 31 101 98 104 29 6.25 26 6 31 102 96 104 30 6.75 25 10 31 99 95 101 30 7.25 21 9 31 92 89 95 31 7.75 18 11 31 86 85 89 30 8.25 18 6 31 84 82 85 28 8.75 12 6 30 83 82 86 20 9.25 8 5 25 82 81 85 12 9.75 13 4 22 81 80 82 12 10.25 11 3 18 80 78 83 7 10.75 6 -5 19 81 80 85 7 11.25 7 2 20 79 78 80 5 11.75 7 -3 8 79 - - 2 12.25 14 7 23 83 80 85 10 12.75 15 6 21 82 81 83 14 13.25 21 9 23 83 81 83 12 13.75 19 4 28 82 80 83 19 14.25 19 3 30 84 82 86 22 14.75 17 -5 31 85 84 86 26 15.25 17 -5 31 87 85 89 30 15.75 9 -9 31 88 87 90 31 16.25 13 -11 31 89 87 91 31 16.75 9 -9 31 89 88 91 31 17.25 7 -4 31 89 88 91 31 17.75 14 -3 31 90 89 92 31 18.25 17 -3 31 91 89 93 31 18.75 21 -1 31 92 91 94 31 19.25 24 -4 31 93 91 95 31 19.75 27 -5 31 95 92 98 31 20.25 27 -6 31 95 93 98 31 20.75 25 -10 31 94 92 101 30 21.25 23 -10 31 95 92 99 30 21.75 24 -8 31 98 94 100 30 22.25 22 -9 31 96 93 101 30 22.75 21 -11 31 96 94 102 29 23.25 20 -12 31 96 93 101 28 23.75 15 -15 31 97 94 101 30 Chaotic velocity 177 kHz Vc/V = 1.38 270 kHz Vc/V = 1.38 225 kHz Vc/V = 1.43 ---------------------------------------------------------- Vertical profiles of monthly mean wind parameters derived from mesosphere/lower thermosphere LF D1 measurements over Central Europe (52N, 15E) January 2000 h voz vom v2z T2z km m/s m/s m/s UT 82.5 11 -1 6 13.7 85.0 11 -1 3 12.3 87.5 9 -2 4 10.3 90.0 8 -4 6 9.4 92.5 7 -6 9 9.0 95.0 6 -7 10 8.6 97.5 5 -8 12 8.3 100.0 5 -8 13 8.0 102.5 4 -7 14 7.7 105.0 2 -6 13 7.3 Monthly mean values of calculated diurnal tidal wind components at 95 km Amplitude: 6 m/s Zonal Phase: 13.7 UT ---------------------------------------------------------- Collm Observatory Ionospheric SID on 60, 75, 162 and 252 kHz Date Time 60 75 162 252 Impor- (Begin) tance (1-3) 4. 1. 0 11.12 UT c x x 1 7. 1. 0 11.26 UT x x x 1 10. 1. 0 8.59 UT x x x x 1 10. 1. 0 13.34 UT x x x x 1 18. 1. 0 9.33 UT x x 1 21. 1. 0 11.35 UT x x 1