Linear stability analysis of meso-alpha,beta scale disturbance along Japan-Sea Polor-Airmass Convergence Zone(JPCZ)

DOI

Bibliographic Information

Other Title
  • 帯状収束雲上に発達するメソα,βスケールの擾乱に関する線形安定解析

Description

To study the mechanism of development of meso-scale disturbance along Japan-Sea Polar-Airmass Convergence Zone (JPCZ) linear stability of a basic flow with a frontal structure is investigated under quasi-geostrophic system which includes both barotropic and baroclinic instabilities. The meso-beta scale disturbance has local maximum of amplitude in the region where the horizontal shear is large. The structure of this disturbance shows that barotropic instability is the dominant developing mechanism. The meso-alpha scale disturbance has large amplitude on frontal surface where the basic field has positive potential vorticity gradient and on the ground surface with negative potential vorticity gradient. The structure of this disturbance indicates that it is caused by baroclinic instability.

Journal

Details 詳細情報について

  • CRID
    1390282680568778624
  • NII Article ID
    130004603316
  • DOI
    10.11345/japannctam.54.0.122.0
  • Data Source
    • JaLC
    • CiNii Articles
  • Abstract License Flag
    Disallowed

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