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タイトル: Characteristics of atmospheric gravity waves observed using the MU (Middle and Upper atmosphere) radar and GPS (Global Positioning System) radio occultation
著者: TSUDA, Toshitaka  kyouindb  KAKEN_id
著者名の別形: 津田, 敏隆
キーワード: atmospheric gravity wave
middle atmosphere
wave breaking
saturated spectrum
the MU radar
GPS radio occultation
発行日: 31-Jan-2014
出版者: Japan Academy
誌名: Proceedings of the Japan Academy, Series B
巻: 90
号: 1
開始ページ: 12
終了ページ: 27
抄録: The wind velocity and temperature profiles observed in the middle atmosphere (altitude: 10–100 km) show perturbations resulting from superposition of various atmospheric waves, including atmospheric gravity waves. Atmospheric gravity waves are known to play an important role in determining the general circulation in the middle atmosphere by dynamical stresses caused by gravity wave breaking. In this paper, we summarize the characteristics of atmospheric gravity waves observed using the middle and upper atmosphere (MU) radar in Japan, as well as novel satellite data obtained from global positioning system radio occultation (GPS RO) measurements. In particular, we focus on the behavior of gravity waves in the mesosphere (50–90 km), where considerable gravity wave attenuation occurs. We also report on the global distribution of gravity wave activity in the stratosphere (10–50 km), highlighting various excitation mechanisms such as orographic effects, convection in the tropics, meteorological disturbances, the subtropical jet and the polar night jet.
著作権等: © 2014 The Japan Academy
URI: http://hdl.handle.net/2433/182948
DOI(出版社版): 10.2183/pjab.90.12
出現コレクション:学術雑誌掲載論文等

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