Abstract
To investigate whether the Asian monsoon influences tropical cyclone (TC) activity over the South China Sea (SCS), TCs (including tropical storms and typhoons) over the SCS are analyzed using the Joint Typhoon Warning Center dataset from 1945 to 2009. Results show an increasing trend in the frequencies of TC-all (all TCs over the SCS) and TY-all (all typhoons over the SCS), due mainly to an increase in the number of TCs moving into the SCS after development elsewhere. Little change is seen in the number of TCs that form in the SCS. The results of wavelet analysis indicate that the frequency of typhoons (TY) shows a similar oscillation as that of TCs, i.e., a dominant periodicity of 8–16 years around the 1970s for all TC activity, except for TC-mov (TCs that moved into the SCS from the western North Pacific). To examine the relationship between typhoon activity and the summer monsoon, a correlation analysis was performed that considered typhoons, TCs, and five monsoon indexes. The analysis reveals statistically significant negative correlation between the strength of the Southwest Asian summer monsoon and typhoon activity over the SCS, which likely reflects the effect of the monsoon on TC formation in the western North Pacific (WNP) and subsequent movement into the SCS. There is a statistically significant negative correlation between TY-loc (typhoons that developed from TCs formed over the SCS) and the South China Sea summer monsoon and Southeast Asian summer monsoon.
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References
Chan J C L. 2000. Tropical cyclone activity over the western North Pacific associated with El Niño and La Niña events. J. Clim., 13: 2 960–2 972.
Chen T, Weng S-P, Yamazaki N, Kiehne S. 1998. Interannual variation in the tropical cyclone formation over the western North Pacific. Mon. Wea. Rev., 126: 1 080–1 090.
Chen G, Huang R. 2008. Influence of monsoon over the warm pool on interannual variation on tropical cyclone activity over the western North Pacific. Adv. Atmos. Sci., 25 (2): 319–328.
Chen G. 2011. How does shifting Pacific Ocean warming modulate on tropical cyclone frequency over the South China Sea? J. Clim., 24: 4 695–4 700.
Ho C H, Baik J J, Kim J H, Gong D Y, Sui C H. 2004. Interdecadal changes in summertime typhoon tracks. J. Clim., 17: 1 767–1 776.
Gray W M. 1975. Tropical cyclone genesis. Dept. of Atmos. Sci. Paper No. 232, Colorado State University, Ft. Collins, Co. 121p.
Gray W M. 1998. The formation of tropical cyclones. Meteor. Atmos. Phys., 67: 37–69.
Lee C-S, Lin Y-L, Cheung K K W. 2006. Tropical cyclone formations in the South China Sea associated with the Mei-Yu Front. Mon. Wea. Rev., 134: 2 670–2 687.
Li J P, Zeng Q C. 2000. Significance of the normalized seasonality of wind field and its rationality for characterizing the monsoon. Sci. Chin. D, 43: 646–653.
Li J, Zeng Q. 2002. A unified monsoon index. Geophys. Res. Lett., 29 (8): 1 151–1 154.
Li J P, Zeng Q C. 2003. A new monsoon index and the geographical distribution of the global monsoons. Adv. Atmos. Sci., 20: 299–302.
Kuma V, Krishnan R. 2005. On the association between the Indian summer monsoon and the tropical cyclone activity over northwest Pacific. Curr. Sci., 88: 602–612.
Sreenivas P, Gnanaseelan C, Prasad K V S R. 2012. Influence of El Niño and Indian Ocean Dipole on sea level variability in the Bay of Bengal. Global and Planetary Change, 80–81: 215–225.
Torrence C, Compo G P. 1998. A practical guide to wavelet analysis. B. Am. Meteorol. Soc., 70: 61–78.
Wang H, Ding Y H, He J H. 2006. Influence of western North Pacific summer monsoon changes on typhoon geneis. Acta Meteorologica Sinica, 64: 345–356. (in Chinese)
Wang B, Fan Z. 1999. Choice of South Asian summer monsoon indices. Bull. Amer. Meteor. Soc., 80: 629–638.
Wang G, Wang H, Qi Y. 2007a. Seasonal variability of tropical cyclones generated over the South China Sea. Acta Oceanologica Sinica, 26(4): 20–28.
Wang G, Su J, Ding Y, Chen D. 2007b. Tropical cyclones genesis over the South China Sea. J. Mar. Syst., 68(3–4): 318–326.
Wang L, Fung C-H, Lau K-H. 2007c. The upper ocean thermal structure and the genesis locations of tropical cyclones in the South China Sea. Journal of Ocean University of China, 6 (2): 125–131.
Wang L, Lau K-H, Fung C-H, Gan J P. 2007d. The relative vorticity of ocean surface winds from the QuikSCAT satellite and its effects on the geneses of tropical cyclones in the South China Sea. Tellus, A, 59: 562–569.
Wang L, Lau K-H, Zhang Q-H, Fung C-H. 2008. Observation of non-developing and developing tropical disturbances over the South China Sea using SSM/I satellite. Geophys. Res. Lett., 35: L10802.
Wu L, Wang B, Geng S. 2005. Growing typhoon influence on East Asia. Geophys. Res. Lett., 32: L18703.
Zeng Q C, Zhang B L. 1998. On the seasonal variation of atmospheric general circulation and the monsoon. Chin. J. Atmo s. Sci., 23 (3): 211–220.
Zhou T, Wu B, Scaife A A, Bronnimann S et al. 2009a. The CLIVAR C20C Project: which components of the Asian-Australian monsoon circulation variations are forced and reproducible? Climate Dynamics, 33 (7–8): 1 051–1 068.
Zhou T, Yu R, Zhang J et al. 2009b. Why the western Pacific subtropical high has extended westward since the late 1970s. J. Climate, 22: 2 199–2 215.
Zhou T, Gong D, Li J, Li B. 2009c. Detecting and understanding the multi-decadal variability of the East Asian Summer Monsoon—recent progress and state of affairs. Meteorologische Zeitschrift, 18(4): 455–467.
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Supported by the Knowledge Innovation Program of Chinese Academy of Sciences (No. KZCX2-YW-Q11-02)
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Huang, Q., Guan, Y. Does the Asian monsoon modulate tropical cyclone activity over the South China Sea?. Chin. J. Ocean. Limnol. 30, 960–965 (2012). https://doi.org/10.1007/s00343-012-1273-x
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DOI: https://doi.org/10.1007/s00343-012-1273-x