Vertical Eddy Diffusivity in the Lower and Middle Atmosphere:
A Climatology Based on the MU Radar Observations during 1986-1992

Toru Sato
Department of Electrical Engineering II, Kyoto University, Sakyo, Kyoto 606, Japan

and Shoichiro Fukao
Radio Atmospheric Science Center, Kyoto University, Uji, Kyoto 611, Japan

Journal of Atmospheric and Terrestrial Physics , Vol. 58 , No.6, pp.727-734.

Extended from Paper GW-6 (Original title: Meteorological Processes and Troposphere-Stratosphere Interactions Revealed by MST Radar Techniques) presented at the Workshop on Dynamics and Coupling of Ionosphere, Middle and Lower Atmosphere in the 26th URSI General Assembly, Kyoto, Japan, 1 September 1993.
Submitted: January 16, 1994; Received: January 21, 1994; First revision: August 14, 1994; Second revision: September, 1994;
Final manuscript received: November 1, 1994; Accepted: November 23, 1994
Published: April, 1996

1. Introduction

2. MU Radar Observations

3. Vertical Distribution of Annual Median

4. Seasonal Variability

5. Interannual Variability

6. Discussion on Estimation of Median

7. Conclusion

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Corrections and Additional Remarks (Nothing)

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List of Tables and Figures

• Table 1. List of the GRATMAC standard observations.
• Fig. 1. Vertical profiles of the annual medians of vertical eddy diffusivity $K$ observed by the MU radar during 1986-1992 in (a) the mesosphere and (b) the upper troposphere and lower stratosphere, compared with standard model profiles indicated by dashed curves ({\sc Ogawa}\ and\ {\sc Shimazaki},\ 1975; {\sc Massie}\ and\ {\sc Hunten},\ 1981).
• Fig. 2. Vertical-temporal plots of the monthly medians of vertical eddy diffusivity $K$ observed by the MU radar during 1986-1992 in (a) the mesosphere and (b) the upper troposphere and lower stratosphere.
• Fig. 3. Same as Fig.\ 2 but for 12-month running-averaged data.
• Fig. 4. Power spectra of vertical eddy diffusivity $K$ observed by the MU radar during 1986-1992 in the lower stratosphere.
• Fig. 5. Vertical-temporal plots of the 12-month running-averaged monthly medians of zonal wind velocity observed by the MU radar during 1986-1992 in the upper troposphere and lower stratosphere.
• Fig. 6. Same as Fig.\ 1(b) but including samples of $\sigma^2$ with values which are negative or smaller than the accuracy.
• Fig. 7. Same as (a) Fig.\ 2(b) and (b) Fig.\ 3(b) but including samples of $\sigma^2$ with values which are negative or smaller than the accuracy.

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References (Updated after publication)

• Dewan 1981: Science , 211 , 1041-1042.
• Fukao et al., 1991: Mon. Wea. Rev. , 119 , 1479-1489.
• Fukao et al., 1994: J. Geophys. Res. , 99 , 18973-18987.
• Garcia and Solomon, 1985: J. geophys. Res. , 90 , 3850-3868.
• Hocking, 1983: J. atmos. terr. Phys. , 45, 89-102.
• Hocking, 1985: Radio Sci. , 20 , 1403-1402.
• Hocking, 1988: J. geophys. Res. , 93 , 2475-2491.
• Hocking, 1991: J. Geomag. Geoelectr. , 43 , 621-636.
• L\"{u}bken et al., 1987: J. atmos. terr. Phys. , 49 , 763-775.
• L\"{u}bken et al., 1993: J. geophys. Res. , 98 , 20369-20384.
• Massie and Hunten, 1981: J. geophys. Res. , 86 , 9859-9868.
• Matsuno, 1980: Pure appl. Geophys , 118 , 189-216.
• Murayama et al., 1994: J. geophys. Res. , 99 , 23057-23069.
• Ogawa and Shimazaki, 1975: J. geophys. Res. , 80 , 3945-3960.
• Sato, 1994: J. atmos. terr. Phys. , 56 , 755-774.
• Strobel et al., 1987: J. geophys. Res. , 92 , 6691-6698.
• Tsuda et al., 1990: Geophys. Res. Lett. , 17 , 725-728.
• Tsutsumi et al., 1994: Radio Sci. , 29 , 599-610.
• Weinstock, 1990: J. atmos. Sci. , 47 , 2211-2225.
• Yamamoto et al., 1988: Radio Sci. , 23 , 1013-1021.
• Yamanaka, 1992: Adv. Space Res. , 12 (10), 215-218.
• Yamanaka and Fukao, 1994: J. atmos. terr. Phys. , 56 , 1375-1385.
• Yamanaka et al., 1994: Adv. Space Res. , 14 (9), 277-280.

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Citations by Subsequent Papers (Under construction !!!!!)

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List of Original Papers by M. D. Yamanaka

Bibliography by any authors

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M. D. YAMANAKA homepage (English)

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E-mail : yamanaka@kurasc.kyoto-u.ac.jp