热带大气的CISK-Rossby波和30-50天振荡

CISK-ROSSBY WAVES IN THE TROPICAL ATMOSPHERE AND 30-50 DAY OSCILLATION

中文关键词:  30-50d振荡  积云对流反馈  CISK-Rossby波

英文关键词:30-50 day oscillation  Convection feedback  CISK-Rossby wave

中文摘要:

      利用斜压准地转滤波方法,通过引入一个反映CISK机制的无量纲凝结潜热参数η(Z),建立了描述热带大气的CISK-Rossby波模式,并求得了该模式的解析解。理论研究表明,考虑CISK机制的CISK-Rossby波与经典的Rossby波有明显差别,它可较好地解释热带大气30-50d振荡现象。

英文摘要:

      In terms of a baroclinic quasi-geostrophic wave-filtering technique and through introducing a dimensionless parameter.η(Z),of condensation-released heat that indicates the CISK mechanism.a model is established for describing tropical atmosphere CISK-Rossby waves.At the same time.the model's analytical solution has also been obtained.Theoretical study shows that there is pronounced difference between CISK-involving Rossby waves and classic Rossby waves.and CISK-Rossby waves can better interpret some aspects of 30-50 day oscillation in the tropical atmosphere.