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Global Structure, Seasonal and Interannual Variability of the Migrating Semidiurnal Tide Seen in the Saber/Timed Temperatures (2002–2007) : Volume 27, Issue 2 (12/02/2009)

By Pancheva, D.

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Book Id: WPLBN0003984550
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Reproduction Date: 2015

Title: Global Structure, Seasonal and Interannual Variability of the Migrating Semidiurnal Tide Seen in the Saber/Timed Temperatures (2002–2007) : Volume 27, Issue 2 (12/02/2009)  
Author: Pancheva, D.
Volume: Vol. 27, Issue 2
Language: English
Subject: Science, Annales, Geophysicae
Collections: Periodicals: Journal and Magazine Collection, Copernicus GmbH
Historic
Publication Date:
2009
Publisher: Copernicus Gmbh, Göttingen, Germany
Member Page: Copernicus Publications

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Pancheva, D., Andonov, B., & Mukhtarov, P. (2009). Global Structure, Seasonal and Interannual Variability of the Migrating Semidiurnal Tide Seen in the Saber/Timed Temperatures (2002–2007) : Volume 27, Issue 2 (12/02/2009). Retrieved from http://members.worldlibrary.net/


Description
Description: Geophysical Institute, Bulgarian Academy of Sciences, Sofia, Bulgaria. The present paper is focused on the global spatial (altitude and latitude) structure, seasonal and interannual variability of the migrating semidiurnal tide derived from the SABER/TIMED temperature measurements for 6 years (January 2002–December 2007). The tidal results are obtained by a new analysis method where the tides (migrating and nonmigrating) and the planetary waves (zonally travelling and stationary) are simultaneously extracted from the satellite data. The strongest migrating semidiurnal tide has been derived at tropical latitudes (±20–30°) where it revealed significant amplification between May and August in the lower thermosphere of both hemispheres. On the average, the semidiurnal temperature tide is stronger in the SH (32 K) than that in the NH (30 K) and the tidal amplitudes at 110 km height are nearly a factor of 5 larger than those at 90 km. The migrating semidiurnal tide in both hemispheres revealed remarkable seasonal behavior at the altitude where it maximizes, ~110 km in the NH and ~115 km in the SH, indicating repeatable each year maxima exactly in May–June and August. However, while the main maximum in the NH is that in August, in the SH it is that in May. The vertical wavelengths indicated seasonal variability being larger in summer (~38–50 km) than in winter (~25–35 km). The seasonal behavior of the semidiurnal tide in the middle latitudes (±40°) is dominated by annual variability with a winter maximum in the upper mesosphere (90 km) of both hemispheres and summer one in the lower thermosphere (110 km). The NH summer maximum (June and August peaks) is much stronger than that in the SH (November and March peaks) having amplitudes of ~23 K and ~13–15 K respectively. The vertical wavelengths at both hemispheres indicated slight seasonal changes and a mean vertical wavelength of ~35 km is observed during most of the year. The interannual variability of the semidiurnal tide in the midlatitude lower thermosphere is at least partly connected with the stratospheric QBO as this effect is stronger in the NH.

Summary
Global structure, seasonal and interannual variability of the migrating semidiurnal tide seen in the SABER/TIMED temperatures (2002–2007)

Excerpt
Huang, F. T., Mayr, H. G., Reber, C. A., Russell, J. M., Mlynczak, M., and Mengel, J. G.: Stratospheric and mesospheric temperature variations for the quasi-biennial and semiannual (QBO and SAO) oscillations based on measurements from SABER (TIMED) and MLS (UARS), Ann. Geophys., 24, 2131–2149, 2006.; Huang, F. T., Mayr, H. G., Reber, C. A., Russell, J. M., Mlynczak, M., and Mengel, J. G.: Ozone quasi-biennial oscillation (QBO), semiannual oscillations (SAO), and correlations with temperature in the mesosphere, lower thermosphere, and stratosphere, based on measurements from SABER on TIMED and MLS on UARS, J. Geophys. Res., 113, A01316, doi:10.1029/2007JA012634, 2008.; Jacobi, Ch., Portnyagin, Yu., Solovjova, T., Hoffmann, P., Singer, W., Fahrutdinova, A., Ishmuratov, R., Beard, G., Mitchell, N., Muller, G., Schminder, R., Kürschner D., Manson, A., and Meek, C.: Climatology of the semidiurnal tide at 52° N–56° N from ground-based radar wind measurements 1985–1995, J. Atmos. Sol.-Terr. Phys., 61, 975–991, 1999.; Kong, A. K. H., Charles, P. A., and Kuulkers, E.: Long-term X-ray variability in GX 354-0, New Astronomy, 3(5), 301–307, 1998.; Manson, A. H., Meek, C. E., Schminder, R., Kürschner, D., Clark, R. R., Müller, H. G., Vincent, R. A., Phillips, A., Fraser, G. J., Singer, W., and Kazimirovsky, E. S.: Tidal winds from the MLT global radar network during the first LTCS campaign September 1987, J. Atmos. Terr. Phys. 52, 175–183, 1990.; Manson, A. H., Meek, C. E., Hagan, M., Hall, C., Hocking, W., MacDougall, J., Franke, S., Riggin, D., Fritts, D., Vincent, R., and Burrage, M.: Seasonal variations of the semi-diurnal tides in the MLT: multi-year MF radar observations from 2 to 70° N, and the GSWM tidal model, J. Atmos. Sol.-Terr. Phys. 61, 809–828, 1999.; Manson, A. H., Meek, C., Hagan, M., Koshyk, J., Franke, S., Fritts, D., Hall, C., Hocking, W., Igarashi, K., MacDougall, J., Riggin, D., and Vincent, R.: Seasonal variations of the semi-diurnal and diurnal tides in the MLT: multi-year MF radar observations from 2–70° N, modelled tides (GSWM, CMAM), Ann. Geophys., 20, 661–677, 2002.; Manson, A. H., Meek, C. E., Hall, C.M., Nozawa, S., Mitchell, N.J., Pancheva, D., Singer, W., and Hoffmann, P.: Mesopause dynamics from the scandinavian triangle ofradars within the PSMOS-DATAR Project, Ann. Geophys., 22, 367–386, 2004.; McLandress, C., Rochon, C. Y., Shepherd, G. G., Solheim, B. H., Thuillier, G., and Vial, F.: The meridional wind component of the thermospheric tides observed by WINDII on UARS, Geophys. Res. Lett., 21, 2417–2420, 1994.; McLandress, C., Shepherd, G. G., and Solheim, B. H.: Satellite observations of thermospheric tides: Results from the Wind Imaging Interferometer on UARS, J. Geophys. Res., 101(D2), 4093–4114, doi:10.1029/95JD03359, 1996.; Mertens, C. J., Mlynczak, M., Lopez-Puertas, M., et al.: Retrieval of mesospheric and lower thermospheric kinetic temperature from measurements of CO2 15 μm earth limb emission under non-LTE conditions, Geophys. Res. Lett., 28, 1391–1394, 2001.; Mertens, C. J., Schmidlin, F. J., Goldberg, R. A., et al.: SABER observations of mesospheric temperature and comparisons with falling sphere measurements taken during the 2002 summer MaCWINE campaign, Geophys. Res. Lett., 31, J03105, doi:10.1029/2003GL018605, 2004.; Mitchell, N. J., Pancheva, D., Middleton, H., and Hagan, M.: Mean winds and tides in the Arctic mesosphere/lower thermosphere region and comparison with the GSWM, J. Geophys. Res., 106, A1, doi:10.1029/2001JA900127, 2002.; Mukhtarov, P., Pancheva, D., and Andonov, B.: Global structure and seasonal and interannual variability of the migrating diurnal tide seen in the SABER/TIMED temperatures between 20 and 120 km, J. Geophys. Res., 114, in press, 2009.; Pancheva, D., Mukhtarov, P., Mitchell, N. J., Beard, A. G., and Muller, H. G.: A comparative study of winds and tidal variability in the mesosphere/lower-thermosphere region o

 

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