Special Issue: Dynamics and Structure of the Mesopause Region (DYSMER)
Observations of mesospheric sporadic sodium layers with the MU radar and sodium lidars
Earth, Planets and Space volume 51, pages 785–797 (1999)
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.
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.
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.
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.
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.
Clemesha, B. R., P. P. Batista, and D. M. Simonich, Concerning the origin of enhanced sodium layers, Geophys. Res. Lett., 15, 1267–1270, 1988.
Clemesha, B. R., P. P. Batista, and D. M. Simonich, Formation of sporadic sodium layers, J. Geophys. Res., 101, 19701–19706, 1996.
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.
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.
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.
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.
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.
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.
Granier, C. and G. Megie, Daytime lidar measurements of the mesospheric sodium layer, Planet. Space Sci., 30, 169–177, 1982.
Hansen, G. and U. von Zahn, Sudden sodium layers in polar latitudes, J. Atmos. Terr. Phys., 52, 585–608, 1990.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
von Zahn, U. and E. Murad, NaHCO3, a source of Na atoms for sudden sodium layers, Geophys. Res. Lett., 17, 147–150, 1990.
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.
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.
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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