FURTHER STUDIES ON EVAPORATION-WIND FEEDBACK |
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| Authors: | Li Chongyin |
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| Institution: | LASG, Institute of Atmospheric Physics, Academia Sinica, Beijing 100080 |
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| Abstract: | The results from simple dynamic studies on the evaporation-wind feedback show that the effect cannot change the nature of tropical atmospheric waves (by retarding the speed), so that the evaporation-wind feedback alone cannot be an exciting mechanism of intraseasonal oscillation in the tropical atmosphere. This is different from that of the wave-CISK mechanism. With combined effect of the cumulus convection heating and evaporation-wind feedback, the CISK-Kelvin waves and CISK-Rossby waves will develop unstably, explaining the dynamic mechanism of tropical intraseasonal oscillation in a more complete and reasonable way than the convection heating alone. Therefore, the evaporation-wind feedback is also important to the intraseasonal oscillation in the tropical atmosphere. |
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| Keywords: | evaporation-wind feedback CISK mechanism intraseasonal oscillation in the tropical atmosphere |
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