A diagnostic study of monsoon intraseasonal oscillation by using observational data of Xisha Station in the South China Sea

YUAN Jing-nan; LIANG Jian-yin

Article Contents

Article Navigation > Haiyang Xuebao > 2006 > 28(1): 18-25

YUAN Jing-nan, LIANG Jian-yin. A diagnostic study of monsoon intraseasonal oscillation by using observational data of Xisha Station in the South China Sea[J]. Haiyang Xuebao, 2006, 28(1): 18-25.

Citation:

YUAN Jing-nan, LIANG Jian-yin. A diagnostic study of monsoon intraseasonal oscillation by using observational data of Xisha Station in the South China Sea[J]. Haiyang Xuebao, 2006, 28(1): 18-25.

YUAN Jing-nan, LIANG Jian-yin. A diagnostic study of monsoon intraseasonal oscillation by using observational data of Xisha Station in the South China Sea[J]. Haiyang Xuebao, 2006, 28(1): 18-25.

Citation:

YUAN Jing-nan, LIANG Jian-yin. A diagnostic study of monsoon intraseasonal oscillation by using observational data of Xisha Station in the South China Sea[J]. Haiyang Xuebao, 2006, 28(1): 18-25.

PDF( 1549 KB)

A diagnostic study of monsoon intraseasonal oscillation by using observational data of Xisha Station in the South China Sea

Guangzhou Institute of Tropical and Marine Meteorology, China Meteorological Administration, Guangzhou 510080, China

Received Date: 2005-05-15
Rev Recd Date: 2005-12-22

Abstract

Abstract

With the Lanczos filter and wavelet transform methods,the observational daily rainfall for the period 1958~2000 and winds at 850 hPa level for the period 1980~2001 of Xisha Station(16.5 N,112.2 E) in the north of South China Sea are used to study the intraseasonal variability of monsoon in the South China Sea.It is shown that the daily rainfall and winds at 850 hPa level have intraseasonal oscillation(ISO) which has spectral time scales about 10~50 d with two peak values of 10~20 and 30~50 d,and the ISO has a prom inentannual variation.The rainfall ISO starts in the middle of May and ends in the middle of October,which time is consistent with the time of summer monsoon onset and ending in the South China Sea.The 850 hPa winds ISO exists nearly in all the year round.And the strong and weakyears of the rainfall and 850 hP a winds ISO are inconsistent with the strong and weak years of summer monso on in the South China Sea.The study shows that the summer monsoon in the South China Sea has ISO,but the relationship between the summer monsoon and the ISO is complex.
- rainf all and 850 hPa winds of Xisha Station,
- Lanczos filter and wavelet analysis,
- monsoon ISO

FullText(HTML)

References(23)

References

MADDEN R D,JULIAN P.Detection of a 40-50 day oscillation in the zonal wind in the tropical Pacific[J].J Atmos Sci,1971,28:702-708.

MADDEN R D,JULIAN P.Description of global scale circulation cells in the tropics with 40-50 day period[J].J Atmos Sci,1972,29:1 109-1 123.

KRISHNAMURTI T N,BHALME H N.Oscillation of a monsoon system:Part Ⅰ.Observational aspects[J].J Atmos Sci,1976,33:1 937-1 954.

KRISHNAMURTI T N,SUBRAHMANYAM D.The 30-50 day mode at 850 mb during MONEX[J].J Atmos Sci,1982,39:2 088-2 095.

YASUNARI T.Cloudiness fluctuations associated with the Northern Hemisphere summer monsoon[J].J Meteor Soc Japan,1979,57:227-242.

YASUNARI T.A quasi-stationary appearance of 30-40 day period in the cloudiness fluctuations during the summer monsoon over India[J].J Meteor Soc Japan,1980,58:225-229.

LAU K M,CHAN P H.Aspects of the 40-50 day oscillation during the northern winter as inferred from outgoing longwave radiation[J].Mon Wea Rev,1985,113:1 889-1 909.

LAU K M,CHAN P H.Aspects of the 40-50 day oscillation during the northern summer as inferred from outgoing longwave radiation[J].Mon Wea Rev,1986,114:1 354-1 367.

WEICKMANN K M,LUSSKY G R,KUTZBACH J E.Intraseasonal(30——60 day) fluctuations of outgoing longwave radiation and 250mb stream function during northern winter[J].Mon Wea Rev,1985,113:941-961.

MURAKAMI T,CHEN L X,XIE A,et al.Eastward propagation of 30-60 day perturbations as revealed from outgoing longwave radiation data[J].J Atmos Sci,1986,43:961-971.

MURAKAMI T,CHEN L X,XIE A.Relationship among seasonal cycles,low-frequency oscillations,and transient disturbances as revealed from outgoing longwave radiation data[J].Mon Wea Rev,1986,114:1 456-1 465.

ANDERSON J R,ROSEN R D.The latitude-height structure of 40-50 day variations in atmospheric and angular momentum[J].J Atmos Sci,1983,40:1 584-1 591.

张可苏.40-50天的纬向基流低频振荡及其失稳效应[J].大气科学,1987,11:227-236.

李崇银.大气中的季节内振荡[J].大气科学,1990,14:32-45.

李崇银.南亚季风槽(脊)和热带气旋活动与移动性CISK波[J].中国科学(B),1985,668-675.

李崇银.频繁的强东亚大槽活动与El Nino发生[J].中国科学(B),1988,667-674.

LAU K M,PENG L.Origin of low-frequency(intraseasonal) oscillations in the tropical atmosphere:Part Ⅰ.Basic theory[J].J Atmos Sci,1987,44:950-972.

宋焱云,谢安,毛江玉,叶谦.南海夏季风暴发过程的低频特征[J].海洋学报,2000,22(2):35-40.

LANCZOS C.Applied Analysis[M].Prentice-Hall,1956.539.

JONES C,WALISER D E,GAUTIER C.The influence of the Madden Julian oscillation on ocean surface heat fluxes and sea surface temperature[J].J Climate,1998,11:1 057-1 072.

DUCHON C E.Lanczos filtering in one and two dimensions[J].J Appl Meteor,1979,18:1 016-1 022.

TORRENCE C,GILBERT P C.A practical guide to wavelet analysis[J].Bulletin of American Meteorological Society,1998,79:61-78.

吴尚森,梁建茵,李春晖.南海夏季风强度与我国汛期降水的关系[J].热带气象学报,2003,19(增刊):25-36.

Relative Articles

Supplements(0)

Cited By

Proportional views