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Detailed Reference Information |
Stening, R.J., Tsuda, T. and Nakamura, T. (2003). Lunar tidal winds in the upper atmosphere over Jakarta. Journal of Geophysical Research 108: doi: 10.1029/2002JA009528. issn: 0148-0227. |
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Winds have been measured at heights from 70 to 120 km by means of a Meteor Wind Radar near Jakarta (6.4S, 106.7E) from 1993 to 1997. These data have been analysed for the lunar semidiurnal tide using a least squares fitting method. Generally lunar tidal amplitudes in the winds are about 2 m s-1 though the northward wind amplitude reaches 6 m s-1 in southern summer. Variations with height and season are shown and compared with the Global Scale Wave Model (GSWM). Often the agreement with the model is good but there is a difference in phase of the eastward wind in southern winter. The GSWM predicts a more rapid increase in northward wind magnitude with height than is observed. Year-to-year changes are examined for different seasons and these reveal sometimes consistent results and sometimes a variation in phase from year to year. Often the phase relations between eastward and northward winds at Jakarta are more characteristic of a Northern Hemisphere tide, as predicted by classical tidal theory, particularly in southern spring and summer. |
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Abstract |
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Keywords
Meteorology and Atmospheric Dynamics, Waves and tides, Meteorology and Atmospheric Dynamics, Mesospheric dynamics, Meteorology and Atmospheric Dynamics, Thermospheric dynamics, Meteorology and Atmospheric Dynamics, Middle atmosphere dynamics (0341, 0342) |
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Publisher
American Geophysical Union 2000 Florida Avenue N.W. Washington, D.C. 20009-1277 USA 1-202-462-6900 1-202-328-0566 service@agu.org |
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