Low-frequency unstable planetary waves in realistic basic states

Auteur :
TANAKA, H. L.

Description :
This study investigates low-frequency, unstable planetary waves in realistic basic states of January 1979, using three-dimensional spectral primitive equations derived by orthonormal vertical structure functions and Hough harmonics. Three selected unsable modes are extensively examined. One is the Green mode in the planetary waves, and the other two are deep Charney modes having different meridional structures. The results suggest that large-scale Pacific blocking during the winter are, at least in part, related to the low-frequency Charney mode having a dipole structure.


Type de document :
Article de périodique

Source :
Science reports of the Institute of Geoscience, University of Tsukuba. Section A : Geographical sciences, issn : 0388-6174, 1993, vol. 14, p. 61-82, Collation : Illustration, Références bibliographiques : réf.

Date :
1993

Editeur :
Pays édition : Japon, Tsukuba, University of Tsukuba, Institute of Geoscience