Dr. Ch. Jacobi LIM Dr. D. Kuerschner Institute for Geophysics and Geology Collm Observatory Results from upper atmosphere wind measurements (52N, 15E) September 2000 ---------------------------------------------------------- Analyses using monthly median half-hourly winds T2z in UT Winds and amplitudes in m/s Frequency voz vom v2z T2z September 2000 Mean 6 -3 20 5.5 virtual height 93 km ---------------------------------------------------------- Results from daily analyses of wind parameters derived from mean wind values on 3 frequencies September 2000 Semidiurnal tidal phase in local mean time (LMT) = UT+1 Date voz vom v2z T2z h' 1./ 2. 9.00 12.3 9.4 18.6 8.1 92.0 2./ 3. 9.00 26.1 6.2 10.0 1.7 94.0 3./ 4. 9.00 18.5 -9.5 23.4 7.5 94.4 4./ 5. 9.00 8.9 -4.3 20.7 6.5 101.5 5./ 6. 9.00 16.1 -4.0 15.3 5.7 93.8 6./ 7. 9.00 21.8 -8.5 14.6 8.0 93.6 7./ 8. 9.00 18.4 -11.2 21.7 5.9 100.7 8./ 9. 9.00 17.9 -7.0 16.3 7.3 96.9 9./10. 9.00 8.7 -1.7 30.7 5.9 90.9 10./11. 9.00 8.8 .7 26.4 6.8 93.1 11./12. 9.00 5.5 .3 24.5 7.6 89.7 12./13. 9.00 -3.2 .7 16.3 7.0 97.3 13./14. 9.00 -2.8 -7.1 26.9 5.2 91.4 14./15. 9.00 2.0 -9.6 25.3 6.9 94.4 15./16. 9.00 11.7 -5.9 17.5 6.6 96.3 16./17. 9.00 1.8 -3.4 25.7 7.0 99.5 17./18. 9.00 .9 -.5 20.2 5.8 95.3 18./19. 9.00 15.8 -5.7 17.9 6.5 92.8 19./20. 9.00 6.0 -8.1 7.5 5.7 92.3 20./21. 9.00 -8.2 -6.6 16.5 4.8 91.6 21./22. 9.00 -13.6 -13.1 8.8 4.7 91.0 22./23. 9.00 .9 -5.9 16.3 6.7 91.9 23./24. 9.00 .6 3.3 19.7 7.1 89.5 24./25. 9.00 9.4 -.2 23.3 6.5 94.5 25./26. 9.00 5.2 -1.1 13.1 5.9 93.6 26./27. 9.00 3.4 -.3 20.8 5.4 91.6 27./28. 9.00 -4.3 -1.6 14.2 6.4 94.6 28./29. 9.00 -1.5 .6 21.3 6.8 92.5 29./30. 9.00 -6.6 -10.0 24.1 6.6 94.2 30. 9./ 1.10.00 -1.1 -6.7 20.2 5.0 101.2 ---------------------------------------------------------- Monthly median winds and heights - September 2000 Time vz vm N h' lower upper N (UT) quartiles .25 -13 3 30 93 90 96 30 .75 -16 7 30 92 90 96 30 1.25 -12 9 30 94 91 97 29 1.75 -4 11 30 93 91 99 30 2.25 8 14 30 95 91 100 30 2.75 11 14 30 96 93 100 30 3.25 15 14 30 98 93 101 30 3.75 23 10 30 98 92 99 30 4.25 23 9 30 97 94 100 30 4.75 22 4 30 93 91 96 30 5.25 23 6 30 90 88 92 30 5.75 24 -1 28 88 86 89 28 6.25 26 7 21 87 86 89 20 6.75 8 2 9 89 85 90 8 7.25 - - - 89 - - 2 7.75 - - - 89 - - 2 8.25 - - - - - - 0 8.75 - - - - - - 0 9.25 - - - - - - 0 11.25 - - - - - - 0 12.25 - - - - - - 0 12.75 -19 -27 7 - - - 0 13.25 -13 -2 8 - - - 0 13.75 - - - - - - 0 14.25 - - - 87 - - 2 14.75 6 2 8 87 86 93 4 15.25 16 6 13 87 85 88 11 15.75 19 7 17 88 86 90 16 16.25 22 6 24 89 87 90 22 16.75 25 8 30 89 87 90 30 17.25 33 4 30 90 88 92 30 17.75 29 -4 30 91 90 92 30 18.25 27 -10 30 91 90 92 30 18.75 26 -15 30 92 90 94 30 19.25 20 -18 30 92 91 95 30 19.75 17 -23 30 91 91 93 29 20.25 9 -22 30 92 91 93 30 20.75 3 -21 30 92 90 95 30 21.25 -5 -21 30 93 91 95 30 21.75 -10 -17 30 94 91 96 30 22.25 -9 -12 30 93 91 95 30 22.75 -13 -5 30 92 91 95 29 23.25 -15 -3 30 93 91 96 30 23.75 -14 -1 30 92 89 95 30 Chaotic velocity 177 kHz Vc/V = 1.04 270 kHz Vc/V = 1.10 225 kHz Vc/V = 1.49 ---------------------------------------------------------- Vertical profiles of monthly mean wind parameters derived from mesosphere/lower thermosphere LF D1 measurements over Central Europe (52N, 15E) September 2000 Results from separate analyses (T2z in UT): 1. - 15. 9. 0 16. - 30. 9. 0 Height voz vom v2z T2z voz vom v2z T2z 85.0 0 0 21 5.5 0 4 13 5.8 87.5 4 -1 20 5.6 1 1 14 5.6 90.0 8 -2 18 5.7 2 -2 16 5.5 92.5 11 -3 17 5.7 2 -4 17 5.4 95.0 13 -4 17 5.7 3 -4 18 5.3 97.5 14 -4 16 5.7 2 -4 19 5.3 100.0 14 -4 16 5.6 2 -3 20 5.4 102.5 13 -4 16 5.5 1 -2 21 5.4 105.0 11 -4 17 5.3 -1 1 22 5.5 Monthly mean values of calculated diurnal tidal wind components at 95 km 1. - 15. 9. 0 16. - 30. 9. 0 Amplitude: 3 m/s 8 m/s Zonal Phase: 19.6 UT 17.1 UT ---------------------------------------------------------- Collm Observatory Ionospheric SID on 60, 75, 162 and 252 kHz Date Time 60 75 162 252 Impor- (Begin) tance (1-3) 4. 9. 0 14.53 UT x x 1 5. 9. 0 10.10 UT x x 1 7. 9. 0 10.58 UT x x 1 9. 9. 0 8.31 UT x x x x 2 11. 9. 0 7.07 UT x x x 1 12. 9. 0 9.05 UT x x x 1 12. 9. 0 11.37 UT x x x 1 14. 9. 0 13.53 UT x x x 1 15. 9. 0 9.50 UT x x x x 1 15. 9. 0 10.54 UT x x x x 1 15. 9. 0 14.32 UT x x x x 2 16. 9. 0 14.20 UT c x x x 2 17. 9. 0 10.24 UT x 1 17. 9. 0 12.20 UT x x x x 1 18. 9. 0 12.21 UT x 1 19. 9. 0 8.07 UT x 1 19. 9. 0 8.10 UT x x x x 2 21. 9. 0 9.12 UT x 1 22. 9. 0 10.00 UT x 1 22. 9. 0 12.59 UT x x x x 1 23. 9. 0 7.10 UT x x x x 1 23. 9. 0 11.44 UT x 1 24. 9. 0 14.05 UT x x 1 26. 9. 0 9.23 UT x x 1 26. 9. 0 12.31 UT x x x 1 29. 9. 0 10.16 UT x x 1 29. 9. 0 13.11 UT x x 1 30. 9. 0 8.25 UT x x 1 30. 9. 0 8.59 UT x x x 1 ---------------------------------------------------------- Please also see some further results on: http://www.uni-leipzig.de/~jacobi/collm/results