Climate Dynamics

, Volume 53, Issue 1–2, pp 137–153 | Cite as

Coordinated influences of the tropical and extratropical intraseasonal oscillations on the 10–30-day variability of the summer rainfall over southeastern China

  • Jianying Li
  • Jiangyu MaoEmail author


This study explores the spatial variations and physical mechanisms of 10–30-day rainfall anomalies over southeastern China based on daily station-observed rainfall data for the period 1979–2015. Empirical orthogonal function analysis shows that the dominant spatial distribution of 10–30-day rainfall anomalies is a monopole pattern over the south of the middle and lower reaches of the Yangtze River Valley (SMLY). Lead-lag composites reveal that the evolution of such a monopole pattern depends on the coordinated influences of 10–30-day atmospheric intraseasonal oscillations (ISOs) from the tropics and mid-high latitudes. In the upper troposphere, the southeastward-propagating Rossby wave train from the mid-high latitudes, which presents as anomalous anticyclones and cyclones alternating over eastern Europe to southeastern coastal area of China, induces strong ascents (descents) over the SMLY via vorticity advection. Circulation anomalies associated with tropical ISO over East Asia/Western North Pacific trigger a vertical cell with strong updraft (downdraft) over the SMLY and downdraft (updraft) to the south, further enhancing the ascents (descents) over the SMLY, forming the wet (dry) phases of 10–30-day rainfall anomalies. Moreover, due to the meridional non-uniformity of ISO-related diabatic heating along the Indian Ocean longitudes, an anticyclone (cyclone) is generated over the central Indian–northern Bay of Bengal, which tends to anchor the anomalous ascents (descents) over the SMLY through its interaction with the intraseasonal Rossby wave from mid-high latitudes, thus favoring the persistence of wet (dry) phases of the 10–30-day SMLY rainfall anomalies.


10–30-day intraseasonal oscillation Non-uniformity of diabatic heating Tropical–extratropical interaction 



This research was jointly supported by the SOA Program on Global Change and Air–Sea Interactions (GASI-IPOVAI-03), the Natural Science Foundation of China (41730963 and 91537103), the Priority Research Program of the Chinese Academy of Sciences (QYZDY-SSW-DQC018), the Fundamental Research Funds for the Central Universities, the China University of Geosciences (Wuhan) (CUG170643), the Key Laboratory of Meteorological Disaster of Ministry of Education, Nanjing University of Information Science and Technology (KLME1602) and the State Scholarship Fund from the China Scholarship Council (CSC).


  1. Annamalai H, Slingo JM (2001) Active/break cycles: diagnosis of the intraseasonal variability of the Asian summer monsoon. Clim Dyn 18:85–102CrossRefGoogle Scholar
  2. Chatterjee P, Goswami BN (2004) Structure, genesis and scale selection of the tropical quasi-biweekly mode. Q J R Meteorol Soc 130:1171–1194CrossRefGoogle Scholar
  3. Chen TC, Chen JM (1995) An observational study of the South China Sea monsoon during the 1979 summer: onset and life cycle. Mon Weather Rev 123:2295–2318CrossRefGoogle Scholar
  4. Chen TC, Murakami M (1988) The 30–50 day variation of convective activity over the Western Pacific Ocean with emphasis on the northwestern region. Mon Weather Rev 116(4):892–906CrossRefGoogle Scholar
  5. Chen GH, Sui C-H (2010) Characteristics and origin of quasi-biweekly oscillation over the western North Pacific during boreal summer. J Geophys Res 115:D14113. CrossRefGoogle Scholar
  6. Chen Y, Zhai P (2013) Persistent extreme precipitation events in China during 1951–2010. Clim Res 57:143–155CrossRefGoogle Scholar
  7. Chen Y, Zhai P (2017) Simultaneous modulations of precipitation and temperature extremes in Southern parts of China by the boreal summer intraseasonal oscillation. Clim Dyn 49:3363–3381CrossRefGoogle Scholar
  8. Easterling DR, Meehl GA, Parmesan C, Changnon SA, Karl TR, Mearns LO (2000) Climate extremes: observations, modeling, and impacts. Science 289:2068–2074CrossRefGoogle Scholar
  9. Enomoto T, Hoskins BJ, Matsuda Y (2003) The formation mechanism of the Bonin high in August. J Meteoro Soc Jpn 129:157–178CrossRefGoogle Scholar
  10. Ertel H (1942) Ein neuer hydrodynamische wirbdsatz. Wirbelsatz Met Z 59:33–49Google Scholar
  11. Fujinami H, Yasunari T (2004) Submonthly variability of convection and circulation over and around the Tibetan Plateau during the boreal summer. J Meteorol Soc Jpn 82:1545–1564CrossRefGoogle Scholar
  12. Fujinami H, Yasunari T (2009) The effects of midlatitude waves over and around the Tibetan Plateau on submonthly variability of the East Asian summer monsoon. Mon Weather Rev 137:2286–2304CrossRefGoogle Scholar
  13. Guan B, Chan JC (2006) Nonstationarity of the intraseasonal oscillations associated with the western North Pacific Summer Monsoon. J Clim 19:622–629CrossRefGoogle Scholar
  14. Hart RE, Grumm RH (2001) Using normalized climatological anomalies to rank synoptic-scale events objectively. Mon Weather Rev 129:2426–2442CrossRefGoogle Scholar
  15. Hong W, Ren XJ (2013) Persistent heavy rainfall over South China during May–August: subseasonal anomalies of circulation and sea surface temperature. Acta Meteorol Sin 27:769–787CrossRefGoogle Scholar
  16. Hoskins BJ, Mclntyre M, Robertson A (1985) On the use and significance of isentropic potential vorticity maps. Q J R Meteorol Soc 111:877–946CrossRefGoogle Scholar
  17. Hsu PC, Lee JY, Ha KJ (2016) Influence of boreal summer intraseasonal oscillation on rainfall extremes in southern China. Int J Clim 36:1403–1412CrossRefGoogle Scholar
  18. Hu WT, Duan AM, Li Y, He H (2016) The intraseasonal oscillation of eastern Tibetan Plateau precipitation in response to the summer Eurasian wave train. J Clim 29:7215–7230CrossRefGoogle Scholar
  19. Jones C, Carvalho LMV, Higgins RW, Waliser DE, Schemm JKE (2004) Climatology of tropical intraseasonal convective anomalies: 1979–2002. J Clim 17:523–539CrossRefGoogle Scholar
  20. Kanamitsu M et al (2002) NCEP dynamical seasonal forecast system 2000. Bull Am Meteorol Soc 83:1019–1037CrossRefGoogle Scholar
  21. Kikuchi K, Wang B (2009) Global perspective of the quasi- biweekly oscillation. J Clim 22:1340–1359CrossRefGoogle Scholar
  22. Kong X, Mao J, Wu G (2017) Influence on the South China rainfall anomalies of the atmospheric quasi-biweekly oscillation in mid-high latitude during the summer of 2002. Chin J Atmos Sci 41(6):1204–1220Google Scholar
  23. Lau WKM, Chan PH (1986) Aspects of the 40–50 day oscillation during the northern summer as inferred from outgoing long wave radiation. Mon Weather Rev 114:1354–1367CrossRefGoogle Scholar
  24. Lau WKM, Waliser DE (eds) (2005) Intraseasonal variability of the atmosphere-ocean climate system. Springer, HeidelbergGoogle Scholar
  25. Lau KM, Yang GJ, Shen SH (1988) Seasonal and intraseasonal climatology of summer monsoon rainfall over East Asia. Mon Weather Rev 116:18–37CrossRefGoogle Scholar
  26. Lawrence DM, Webster PJ (2002) The boreal summer intraseasonal oscillation: relationship between northward and eastward movement of convection. J Atmos Sci 59:1593–1606CrossRefGoogle Scholar
  27. Lee JY, Wang B, Wheeler MC, Fu XH, Waliser DE, Kang IS (2013) Real-time multivariate indices for the boreal summer intraseasonal oscillation over the Asian summer monsoon region. Clim Dyn 40:493–509CrossRefGoogle Scholar
  28. Lee SS, Waliser DE, Neena JM, Lee JY (2015) Predictability and prediction skill of the boreal summer intraseasonal oscillation in the intraseasonal variability hindcast experiment. Clim Dyn 45:2123–2135CrossRefGoogle Scholar
  29. Lee SS, Moon JY, Wang B, Kim HJ (2017) Subseasonal prediction of extreme precipitation over Asia: boreal summer intraseasonal oscillation perspective. J Clim 30:2849–2865CrossRefGoogle Scholar
  30. Li J, Mao J (2018) The impact of interactions between tropical and extra-tropical intraseasonal oscillations around Tibetan Plateau on the 1998 Yangtze floods. Q J R Meteorol Soc 144:1123–1139CrossRefGoogle Scholar
  31. Li CY, Zhou W (2015) Multiscale control of summertime persistent heavy precipitation events over South China in association with synoptic, intraseasonal, and low-frequency background. Clim Dyn 45:1–15CrossRefGoogle Scholar
  32. Li J, Mao J, Wu G (2015) A case study of the impact of boreal summer intraseasonal oscillations on Yangtze rainfall. Clim Dyn 44:2683–2702CrossRefGoogle Scholar
  33. Liebmann B, Smith CA (1996) Description of a complete (interpolated) outgoing longwave radiation dataset. Bull Am Meteorol Soc 77:1275–1277Google Scholar
  34. Mao J, Wu G (2006) Intraseasonal variations of the Yangtze rainfall and its related atmospheric circulation features during the 1991 summer. Clim Dyn 27:815–830CrossRefGoogle Scholar
  35. Mao J, Sun Z, Wu G (2010) 20–50-day oscillation of summer Yangtze rainfall in response to intraseasonal variations in the subtropical high over the western North Pacific and South China Sea. Clim Dyn 34:747–761CrossRefGoogle Scholar
  36. Naoe H, Matsuda Y (1998) Rossby wave propagation and nonlinear effects in zonally-varyingbasic flows. J Meteorol Soc Jpn 76:385–402CrossRefGoogle Scholar
  37. Nitta T (1983) Observational study of heat sources over the eastern Tibetan Plateau during the summer monsoon. J Meteorol Soc Jpn 61:590–605CrossRefGoogle Scholar
  38. North GR, Bell TL, Cahalan RF, Moeng FJ (1982) Sampling errors in the estimation of empirical orthogonal functions. Mon Weather Rev 110:699–706CrossRefGoogle Scholar
  39. Pan LL, Li T (2008) Interactions between the tropical ISO and midlatitude low-frequency flow. Clim Dyn 31:375–388CrossRefGoogle Scholar
  40. Sardeshmukh PD, Hoskins BJ (1988) The generation of global rotational flow by steady idealized tropical divergence. J Atmos Sci 45:1228–1251CrossRefGoogle Scholar
  41. Takaya K, Nakamura H (2001) A formulation of a phase independent wave-activity flux for stationary and migratory quasigeostrophic eddies on a zonally varying basic flow. J Atmos Sci 58:608–627CrossRefGoogle Scholar
  42. Tao SY, Xu SY (1962) Some aspects of the circulation during the periods of the persistent drought and flood in the Yangtze River and Huaihe River valley in summer. Acta Meteorol Sin 32(1):1–18Google Scholar
  43. Terao T (1998) Barotropic disturbances on intraseasonal timescales observed in the midlatitudes over the Eurasian Continent during the northern summer. J Meteorol Soc Jpn 76:419–436CrossRefGoogle Scholar
  44. Wang X, Chen GH (2017) Quasi-biweekly oscillation over the South China Sea in late summer: propagation dynamics and energetics. J Clim 30:4103–4112CrossRefGoogle Scholar
  45. Wang M, Duan A (2015) Quasi-biweekly oscillation over the Tibetan Plateau and its link with Asian summer monsoon. J Clim 28:4921–4940CrossRefGoogle Scholar
  46. Watanabe T, Yamazaki K (2012) Influence of the anticyclonic anomaly in the subtropical jet over the western Tibetan Plateau on the intraseasonal variability of the summer Asian monsoon in early summer. J Clim 25:1146–1159Google Scholar
  47. Wheeler MC, Hendon HH (2004) An all-season real-time multivariate MJO index: development of an index for monitoring and prediction. Mon Weather Rev 132:1917–1932CrossRefGoogle Scholar
  48. Wu J, Gao XJ (2013) A gridded daily observation dataset over China region and comparison with the other datasets. Acta Geophys Sin (in Chinese) 56(4):1102–1111Google Scholar
  49. Wu GX, Liu H (1998) Vertical vorticity development owing to down-sliding at slantwise isentropic surface. Dyn Atmos Oceans 27:715–743CrossRefGoogle Scholar
  50. Yanai M, Esbensen S, Chu JH (1973) Determination of bulk properties of tropical cloud clusters from large-scale heat and moisture budgets. J Atmos Sci 30:611–627CrossRefGoogle Scholar
  51. Yang S, Li T (2017) Causes of intraseasonal diabatic heating variability over and near the Tibetan Plateau in boreal summer. Clim Dyn 49:2385–2406CrossRefGoogle Scholar
  52. Yang J, Wang B, Wang B, Bao Q (2010) Biweekly and 21–30-day variations of the subtropical summer monsoon rainfall over the lower reach of the Yangtze River Basin. J Clim 23:1146–1159CrossRefGoogle Scholar
  53. Yang J, Bao Q, Wang B, Gong DY, He H, Gao MN (2014) Distinct quasi-biweekly features of the subtropical East Asian monsoon during early and late summers. Clim Dyn 42:1469–1486CrossRefGoogle Scholar
  54. Zhu C, Nakazawa T, Li J, Chen L (2003) The 30–60 day intraseasonal oscillation over the western North Pacific Ocean and its impacts on summer flooding in China during 1998. Geophys Res Lett 30(18):1952CrossRefGoogle Scholar

Copyright information

© Springer-Verlag GmbH Germany, part of Springer Nature 2018

Authors and Affiliations

  1. 1.School of Environmental StudiesChina University of GeosciencesWuhanChina
  2. 2.Key Laboratory of Meteorological Disaster of Ministry of EducationNanjing University of Information Science and TechnologyNanjingChina
  3. 3.State Key Laboratory of Numerical Modeling for Atmospheric Sciences and Geophysical Fluid Dynamics (LASG), Institute of Atmospheric PhysicsChinese Academy of SciencesBeijingChina

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