著者
Masashi Kohma Kaoru Sato
出版者
(公社)日本気象学会
雑誌
SOLA (ISSN:13496476)
巻号頁・発行日
vol.9, pp.9-14, 2013 (Released:2013-02-02)
参考文献数
27
被引用文献数
1

It is shown that there are two types of wave solutions trapped at the boundaries which owe to the Coriolis force proportional to the meridional component of the earth's rotation vector (hereafter referred to as the fH force) under the nontraditional approximation (non-TA). One is a type of Kelvin waves (non-TA Kelvin waves) trapped on the eastern and western boundaries. Unlike traditional Kelvin waves (TA Kelvin waves), non-TA Kelvin waves trapped on the western (eastern) boundary can have northward (southward) phase and group velocities in the Northern Hemisphere (NH). The other is a type of Rossby waves trapped on the ground. The external Rossby waves can have wave structure in the vertical and amplitudes decaying with height. Moreover, the fH force modifies even the characteristics of TA Kelvin waves trapped on the southern and northern boundaries: In the NH, the Kelvin waves trapped on the southern boundary have an upper limit (kc) to the zonal wavenumber (k), and those with large k (> kc) trapped on the northern boundary have eastward phase velocity in the NH. The latter is regarded as the third type of edge waves unique to non-TA.

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@micchi1205 地球回転ベクトル水平成分は最大だけどね~,大規模対流域付近で等価順圧的に高気圧渦つくったり,変わったKelvin波とRossby波がでてきたり,などなど http://t.co/O0nXCEdXzF https://t.co/Zm0UBCNasW
SOLA(気象学会のレター誌)に論文が掲載されました。 自転角速度ベクトルの水平成分によるコリオリ力を含む方程式系を使って、境界に捕捉される大気波動を新たに導出しました。 https://t.co/TuCqL9td

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