Comparisons between a GCM run and theoretical calculation for Yanai waves due to meridional wind forcing in the western edge of a basin. The forcing is weak Tau-y, turned on at t=0 and remaining steady thereafter, uniform in y over a region 26° longitude wide along the western boundary of the model. The model v-field is projected onto vertical modes (see vertical baroclinic mode figures below), and then onto the Yanai wave meridional structure function. The figures below show some comparisons between the model and theoretical solutions.

Read the abstract: Moore, Kloosterziel and Kessler (1997).

Figures showing the projection of the model zonal and meridional current fields onto vertical modes.

- Vertical baroclinic modes for Gent/Cane model

Shows the vertical structures and associated horizontal modes for ZONAL current on the equator. - Vertical baroclinic modes for Gent/Cane model

Shows the horizontal modes for MERIDIONAL current on the equator.

- 95°W (35 Rossby radii east of forcing)
- 112°W (30 RR)
- 128°W (25 RR)
- 145°W (20 RR)
- 161°W (15 RR)
- 177°W (10 RR)
- 166°E (5 RR)

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