THE DIABATIC WAVES IN BAROTROPIC MODEL

LI Li-ming; HUANG Da-chuan; QIAO Fang-li; LIU Shi-kuo

Abstract:

The equations of barotropic model are used to discuss the effects of diabatic factors such as heat-ing of convective condensation, evaporation-wind feedback and CISK on the Rossby wave and the Kelvin wave. In low latitudes we have obtained the angular frequency and analyzed the period and stability of waves. The result shows the existence of the diabatic factors not only enlarges the period of adiabatic waves but also changes the stability of waves. Thus we think that the so-called intraseasonal oscillation and some other low-frequency oscillations are a kind of diabatic waves which are important factors producing the long-term weather changes and short-term climatic evolution.

Get Citation+

LI Li-ming, HUANG Da-chuan, QIAO Fang-li, et al. THE DIABATIC WAVES IN BAROTROPIC MODEL [J]. Journal of Tropical Meteorology, 2000, 6(1): 1-14.

Export:

Article Metrics

THE DIABATIC WAVES IN BAROTROPIC MODEL

Department of Geophysics, Peking University, Beijing 100871 China

First National Institute of Ocean-ography Key Laboratory of Marine Science and Numerical Modeling, Qingdao 266000, China

Received Date: 1999-09-20

Rev Recd Date: 2000-03-06

Abstract: The equations of barotropic model are used to discuss the effects of diabatic factors such as heat-ing of convective condensation, evaporation-wind feedback and CISK on the Rossby wave and the Kelvin wave. In low latitudes we have obtained the angular frequency and analyzed the period and stability of waves. The result shows the existence of the diabatic factors not only enlarges the period of adiabatic waves but also changes the stability of waves. Thus we think that the so-called intraseasonal oscillation and some other low-frequency oscillations are a kind of diabatic waves which are important factors producing the long-term weather changes and short-term climatic evolution.

HTML

Reference (28)

[1]	Chang C P,Lim H,1988.Kelvin wave-CISK:a possible mechanism for 30-50 day oscillations.J.Atmos.Sci., 45:1709-2240.
[2]	Charney J G,Eliassen A.1964.On the growth of the hurricane depression.J.Atmos.Sci.,21:68-75.
[3]	Emanual K A.1987.An air-sea interaction model of the intraseasonal oscillation in the tropics.J.Atmos.Sci., 44:2224-2240.
[4]	Hayashi Y,1970.A theory of large-scale equatorial waves generated by condensation heat and accelerating the zonal wind.J.Meteor.Soc.Japan,48:140-160.
[5]	Hayashi Y-Y,Sumi A,1986.The 30-40 day oscillations simulated in an 'equal planet' model.J.Meteor.Soc. Japan,64:451-467.
[6]	Krishnamurti T N,Jayakumar P K,Jian Sheng,et al,1985.Divergent circulation on the 30 to 50 day time scale. J.Atmos.Sci.,42:364-375.
[7]	Krishnamurti T N,Subrahmanyam D,1982.The 30-60 day mode at 850mb during MONEX.J.Atmos.Sci.,39: 2088-2095.
[8]	Krishnamurti T N,Sulocana Hadgil,1985.On the structure of the 30 to 50 day mode over the global during FGGE.Tellus,37A:336-360.
[9]	Lau K M.Deng L,1987.Origin of low-frequency(intraseasonal)oscillations in the tropical atmosphere,Part Ⅰ:Basic theory.J.Atmos.Sci.,44:950-972.
[10]	Lau L M,Shen S H,1988.On the dynamics of intraseasonal oscillation and ENSO.J.Atmos.Sci.,45: 1781-1797.
[11]	Li Chongyin,1985.Hovmoler of South Asia Monsoon in summer and the activity of the tropical cyclone and the moving of CISK waves.Sci.Sinica,(B),7:668-675.
[12]	Li Chongying,1983.CISK-oscillation convection(in chinese).Sci.Sinica,(B),857-865.
[13]	Li Guinong,Li Shikuo,1993.Wave-CISK,evaporation-wind feedback and low-frequency oscillation(in Chinese).Chinese J.Atmos.Sci.,17:403-413.
[14]	Li Shikuo,Zhuang Ruining,1993.The effect of SST and low-frequency oscillations(in Chinese).J.Trop.Meteor.,65-69.
[15]	Lindzen R S,1974.Wave-CISK in the tropics.J.Atmos.Sci.,31:156-197.
[16]	Liu S K,Wang J Y,1990.A baroclinic semi-geostrophic model using the wave-CISK theory and low-frequency oscillations.Acta.Meteor.Sinica,4:576-585.
[17]	Liu Shikuo,Liu Shida,1988.Special Functions.Beijing:China Meteor Press,789.
[18]	Madden R A,Julian P R,1971.Detection of a 40-50 day oscillation in the zonal wind in the tropical Pacific.J. Atmos.Sci.,28:702-708.
[19]	Madden R A,Julian P R,1972.Description of global-scale circulation cells in the tropics with a 40-50 day period.J.Atmos.Sci.,29:1109-1123.
[20]	Miyahara S,1987.A simple model of the tropical intraseasonal oscillation.J.Meteor.Soc.Japan.65:340-351;
[21]	Murakami T,Nakazawa T,1985.Tropical 45 day oscillations during the 1979 northern hemisphre summr.J. Atmos.Sci.,42:1107-1122.
[22]	Murakami T,Nakazawa T,Jinhai H,1984.On the 40-50 day oscillations during the 1979 northern hemisphere summer,Part 1:Phase propagation.J.Meteor.Soc.Japan,62:440-468.
[23]	Neelin J D,Held I M,Cook K H,1887.Evaporation-wind feedback and low-frequency variability in tropical atmosphere.J.Atmos.Sci.,44:2541-2348.
[24]	Wang Jiyong,Liu Shikuo,1996.Wave-CISK and atmosphere low-frequency oscillations in low latitudes. Chinese J.Atmos.Sci.,20:584-592.
[25]	Yamasaki M,1969.Large-scale disturbances in a conditionally unstable atmosphere in low latitudes.Paper in Meteor.Geophys.,20:289-336.
[26]	Yasunai T,1979.Cloudiness fluctuation associated with the northern hemisphere summer monsoon.J.Meteor. Soc.Japan,57:227-242.
[27]	Yasunai T,1980.A quasi-stationary appearance of 30-40 day period in the cloudiness fluctuations during the summer monsoon over India.J.Meteor.Soc.Japan,58:225-229.
[28]	Zhao Qiang,Li Shikuo,1996.CISK,evaporation-wind feedback mechanism and tropical atmosphere 30-60 day oscillation.Acta.Meteor.Sinica,54:417-426.

THE DIABATIC WAVES IN BAROTROPIC MODEL

Abstract:

References

Get Citation+

Share Article

Article Metrics

Proportional views

Manuscript History

Online:

通讯作者: 陈斌, bchen63@163.com