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Volume 51 Supplement 7-8

Special Issue: Dynamics and Structure of the Mesopause Region (DYSMER)

Observations of mesospheric sporadic sodium layers with the MU radar and sodium lidars

Abstract

The dynamical structure of the atmosphere around the sporadic sodium layer at mid-latitude (35°N) below 100 km was studied by simultaneous observation with the MU radar at Shigaraki (34.9°N, 136.1°E), and two Na lidars at Shigaraki and in Hachioji (35.6°N, 139.4°E). In the lidar data, fifteen Nas (sporadic sodium layer) events were detected. Wind shear, temperature, and stability indices, at around the time and height of Nas were observed with the MU radar. Strong total wind shear correlated well with Nas, especially when sporadic Es did not accompany. However, no other clear correlations, such as correlations with temperature etc., were found. The result is similar to the report of the lidar observations in Hawaii during the ALOHA-93 campaign (Qian et al., 1998), and suggests a similar generation mechanism between 20°N and 35°N.

References

  • Batista, P. P., B. R. Clemesha, and D. M. Simonich, Characteristics of the sporadic sodium layers observed at 23°S, J. Geophys. Res., 94, 15349–15358, 1989.

    Article  Google Scholar 

  • Beatty, T. J., R. L. Collins, C. S. Gardner, C. A. Hostetler, C. F. Sechrist, Jr., and C. A. Tepley, Simultaneous radar and lidar observations of sporadic E and Na layers at Arecibo, Geophys. Res. Lett., 16, 1019–1022, 1989.

    Article  Google Scholar 

  • Clemesha, B. R., V. W. J. H. Kirchhoff, D. M. Simonich, and H. Takahashi, Evidence of an extra-terrestrial source for the mesospheric sodium layer, Geophys. Res. Lett., 5(10), 873–876, 1978.

    Article  Google Scholar 

  • Clemesha, B. R., V. W. J. H. Kirchhoff, D. M. Simonich, H. Takahashi, and P. P. Batista, Spaced lidar and nightglow observations of an atmospheric sodium enhancement, J. Geophys. Res., 85, 3480–3484, 1980.

    Article  Google Scholar 

  • Clemesha, B. R., P. P. Batista, and D. M. Simonich, Concerning the origin of enhanced sodium layers, Geophys. Res. Lett., 15, 1267–1270, 1988.

    Article  Google Scholar 

  • Clemesha, B. R., P. P. Batista, and D. M. Simonich, Formation of sporadic sodium layers, J. Geophys. Res., 101, 19701–19706, 1996.

    Article  Google Scholar 

  • Cox, R. M. and J. M. C. Plane, An ion-modecule mechanism for the formation of neutral sporadic Na layers, J. Geophys. Res., 103, 6349–6359, 1998.

    Article  Google Scholar 

  • Fukao, S., T. Sato, T. Tsuda, S. Kato, K. Wakasugi, and T. Makihira, The MU Radar with an active phased array system: 1. Antenna and power amplifiers, Radio Sci., 20, 1155–1168, 1985a.

    Article  Google Scholar 

  • Fukao, S., T. Tsuda, T. Sato, S. Kato, K. Wakasugi, and T. Makihira, The MU Radar with an active phased array system: 2. In-house equipment, Radio Sci., 20, 1169–1176, 1985b.

    Article  Google Scholar 

  • Gardner, C. S., D. G. Voelz, C. F. Sechrist, Jr., and A. C. Segal, Lidar studies of the nighttime sodium layer over Urbana, Illinois, 1, Seasonal and nocturnal variations, J. Geophys. Res., 91, 13659–13673, 1986.

    Article  Google Scholar 

  • Gardner, C. S., D. C. Senft, and K. H. Kwon, Lidar observations of a substantial sodium depletion in the summertime Arctic mesosphere, Nature, 332, 142–144, 1988.

    Article  Google Scholar 

  • Gardner, C. S., X. Tao, and G. C. Papen, Observations of strong wind shears and temperature enhancement during several sporadic Na layer events above Haleakala, Geophys. Res. Lett., 22(20), 2809–2812, 1995.

    Article  Google Scholar 

  • Granier, C. and G. Megie, Daytime lidar measurements of the mesospheric sodium layer, Planet. Space Sci., 30, 169–177, 1982.

    Article  Google Scholar 

  • Hansen, G. and U. von Zahn, Sudden sodium layers in polar latitudes, J. Atmos. Terr. Phys., 52, 585–608, 1990.

    Article  Google Scholar 

  • Kane, T. J., C. S. Gardner, Q. Zhou, J. D. Mathew, and C. A. Tepley, Lidar, radar and airglow observations of a prominent sporadic Na/sporadic E layer event at Arecibo during AIDA-89, J. Atmos. Terr. Phys., 55(3), 499–511, 1993.

    Article  Google Scholar 

  • Kirkwood, S. and U. von Zahn, On the role of auroral electric fields in the formation of low altitude sporadic-E and sudden sodium layers, J. Atmos. Terr. Phys., 53, 389–407, 1991.

    Article  Google Scholar 

  • Kobayashi, K., T. Kitahara, T. D. Kawahara, Y. Saito, A. Nomura, T. Nakamura, T. Tsuda, M. Abo, C. Nagasawa, and M. Tsutsumi, Simultaneous measurements of dynamical structure in the mesopause region with lidars and MU radar, Earth Planets Space, 51, this issue, 731–739, 1999.

    Article  Google Scholar 

  • Kwon, K. H., D. C. Senft, and C. S. Gardner, Lidar observations of sporadic sodium layers at Mauna Kea Observatory, Hawaii, J. Geophys. Res., 93, 14,199–14,208, 1988.

    Article  Google Scholar 

  • Nagasawa, C. and M. Abo, Lidar observations of a lot of sporadic sodium layers in mid-latitude, Geophys. Res. Lett., 22(3), 263–266, 1995.

    Article  Google Scholar 

  • Nakamura, T., T. Tsuda, M. Tsutsumi, K. Kita, T. Uehara, S. Kato, and S. Fukao, Meteor wind observations with the MU radar, Radio Sci., 26, 857–869, 1991.

    Article  Google Scholar 

  • Nakamura, T., T. Tsuda, S. Fukao, H. Takahashi, P. P. Batista, R. A. Buriti, M. Tsutsumi, M. Ishii, K. Igarashi, H. Fukunishi, Y. Yamada, A. Nomura, T. D. Kawahara, K. Kobayashi, C. Nagasawa, M. Abo, and M. J. Taylor, Studies of the MLT regions using the MU radar and simultaneous observations with OH spectrometer and other optical instruments, Adv. Space Res., 19, 643–652, 1997.

    Article  Google Scholar 

  • Namboothiri, S. P., T. Tsuda, M. Tsutsumi, T. Nakamura, C. Nagasawa, and M. Abo, Simultaneous observations of mesospheric gravity waves with the MU radar and a sodium lidar, J. Geophys. Res., 101, 4057–4063, 1996.

    Article  Google Scholar 

  • Nomura, A., T. Kano, Y. Iwasaka, H. Fukunishi, T. Hirasawa, and S. Kawaguchi, Lidar observations of the mesospheric sodium layer at Syowa station, Antarctica, Geophys. Res. Lett., 14, 700–703, 1987.

    Article  Google Scholar 

  • Qian, J., Y. Gu, and C. S. Gardner, Characteristics of the sporadic Na layers observed during the ALOHA/ANLC-93 campaigns, J. Geophys. Res., 103(D6), 6333–6347, 1998.

    Article  Google Scholar 

  • Tsutsumi, M., T. Tsuda, T. Nakamura, and S. Fukao, Wind velocity and temperature fluctuations due to a 2-day wave observed with radio meteor echoes, J. Geophys. Res., 101(D5), 9425–9432, 1996.

    Article  Google Scholar 

  • von Zahn, U., P. von der Gathen, and G. Hansen, Forced release of sodium from upper atmospheric dust particles, Geophys. Res. Lett., 14, 76–79, 1987.

    Article  Google Scholar 

  • von Zahn, U. and T. L. Hansen, Sudden neutral sodium layers: a strong link to sporadic E layers, J. Atmos. Terr. Phys., 50, 93–104, 1988.

    Article  Google Scholar 

  • von Zahn, U. and E. Murad, NaHCO3, a source of Na atoms for sudden sodium layers, Geophys. Res. Lett., 17, 147–150, 1990.

    Article  Google Scholar 

  • Zhou, Q. and J. D. Mathews, Generation of sporadic sodium layers via turbulent heating of the atmosphere?, J. Atmos. Terr. Phys., 57(11), 1309–1319, 1995.

    Article  Google Scholar 

  • Zhou, Q., J. D. Mathews, and C. A. Tepley, A proposed temperature dependent mechanism for the formation of sporadic sodium layers, J. Atmos. Terr. Phys., 55(3), 513–521, 1993.

    Article  Google Scholar 

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Correspondence to Hirohisa Miyagawa.

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Miyagawa, H., Nakamura, T., Tsuda, T. et al. Observations of mesospheric sporadic sodium layers with the MU radar and sodium lidars. Earth Planet Sp 51, 785–797 (1999). https://doi.org/10.1186/BF03353237

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  • DOI: https://doi.org/10.1186/BF03353237

Keywords

  • Lidar
  • Wind Shear
  • Richardson Number
  • Lidar Observation
  • Mesopause Region