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Journal of Meteorological Research

, Volume 32, Issue 3, pp 491–502 | Cite as

The 200-hPa Wind Perturbation in the Subtropical Westerly over East Asia Related to Medium-Range Forecast of Summer Rainfall in China

  • Ronghua Jin
  • Yan Li
  • Qingrou Long
  • Sijia Liu
Article
  • 14 Downloads

Abstract

The 200-hPa wind perturbation (WP) in the subtropical westerly over East Asia (SWEA) has seldom been examined in previous studies, especially in connection with forecast of the summer rainfall in China. Based on the daily NCEP/NCAR reanalysis data and precipitation observations in China from 1 June to 31 August of 1960–2015, this study first systematically analyzes the spatiotemporal distribution features of the 200-hPa WP in the SWEA on different scales, especially during the Meiyu season in the Yangtze–Huaihe region and during the rainy period in North China, by using spectral decomposition and period analysis. It is found that in the 56-yr mean fields, the 200-hPa WP in the SWEA is collocated with the East Asian subtropical jet (EASJ), with the centers of the two systems coincidentally overlapped. The WP filed in the subtropical westerly mainly comprises planetary- and synoptic-scale waves. The quasi-stationary planetary-scale wave seems to determine the shape and intensity of the WP in the SWEA, while the synoptic-scale wave is closely related to the local central intensity of the WP. The daily evolution of the 56-yr mean fields shows that, following the northward (southward) movement of SWEA from 1 June to 31 August, the planetaryscale WP in the SWEA becomes gradually weakened (intensified) whereas the synoptic-scale WP is slightly intensified (weakened).

The results also reveal that during the Meiyu season in the Yangtze–Huaihe region, the WP in the SWEA moves northward slowly around 37°–39°N, demonstrating a quasi-biweekly oscillation in its geographic location, which is largely attributed to the strong (weak) planetary-scale (synoptic-scale) component. On the contrast, in the summer rainy season over North China, the WP in the SWEA further strives northward beyond 40°N, showing both quasi-biweekly and weekly oscillations in its position; meanwhile, the planetary-scale wave in the SWEA becomes weakened whereas the synoptic-scale wave is enhanced. These salient variational features of the WP in the SWEA and its scaledependent components may be useful for the medium-range forecast of the rain belt migration in eastern China.

Key words

westerly wind perturbation subtropical westerly East Asia spectral decomposition rainy season in eastern China period analysis 

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References

  1. Ambrizzi T., B. J. Hoskins, and H. H. Hsu, 1995: Rossby wave propagation and teleconnection patterns in the austral winter. J. Atmos. Sci., 52, 3661–3672, doi: 10.1175/1520-0469(1995)052<3661:RWPATP>2.0.CO;2.CrossRefGoogle Scholar
  2. Berggren R., W. J. Gibbs, and C. W. Newton, 1958: Observational Characteristics of the Jet Stream. WMO Technical Note, 19 pp.Google Scholar
  3. Chen G. S., and R. H. Huang, 2012: Excitation mechanisms of the teleconnection patterns affecting the July precipitation in Northwest China. J. Climate, 25, 7834–7851, doi: 10.1175/JCLI-D-11-00684.1.CrossRefGoogle Scholar
  4. Chen T. C., M. C. Yen, and S. P. Weng, 2000: Interaction between the summer monsoons in East Asia and the South China Sea: Intraseasonal monsoon modes. J. Atmos. Sci, 57, 1373–1392, doi: 10.1175/1520-0469(2000)057<1373:IBTSMI>2.0.CO;2.CrossRefGoogle Scholar
  5. Cressman G. P., 1981: Circulations of the West Pacific jet stream. Mon. Wea. Rev., 109, 2450–2463, doi: 10.1175/1520-0493(1981)109<2450:COTWPJ>2.0.CO;2.CrossRefGoogle Scholar
  6. Ding Q. H., and B. Wang, 2005: Circumglobal teleconnection in the Northern Hemisphere summer. J. Climate, 18, 3483–3505, doi: 10.1175/JCLI3473.1.CrossRefGoogle Scholar
  7. Ding Y. H., S. M. Zhao, and X. Q. Fu, 1988: A study of the longterm mean circulation at 200 hPa over the global tropics and subtropics during northern summer —Part II: Planetaryscale wind systems. Chinese J. Atmos. Sci., 12, 242–249, doi: 10.3878/j.issn.1006-9895.1988.03.03. (in Chinese)Google Scholar
  8. Endlich R. M., and G. S. McLean, 1957: The structure of the jet stream core. J. Atmos. Sci., 14, 543–552, doi: 10.1175/1520-0469(1957)014<0543:TSOTJS>2.0.CO;2.Google Scholar
  9. Enomoto T., B. J. Hoskins, and Y. Matsuda, 2003: The formation mechanism of the Bonin high in August. Quart. J. Roy. Meteor. Soc., 129, 157–178, doi: 10.1256/qj.01.211.CrossRefGoogle Scholar
  10. Farge M., 1992: Wavelet transforms and their applications to turbulence. Ann. Rev. Fluid Mech., 24, 395–457, doi: 10.1146/annurev.fl.24.010192.002143.CrossRefGoogle Scholar
  11. Francis J. A., and S. J. Vavrus, 2012: Evidence linking Arctic amplification to extreme weather in mid-latitudes. Geophy. Res. Lett., 39, L06801, doi: 10.1029/2012GL051000.CrossRefGoogle Scholar
  12. Francis J. A., and S. J. Vavrus, 2015: Evidence for a wavier jet stream in response to rapid Arctic warming. Environ. Res. Lett., 10, 014005, doi: 10.1088/1748-9326/10/1/014005.CrossRefGoogle Scholar
  13. Gao S. T., S. Y. Tao, and Y. H. Ding, 1992: Upper wave–East Asian jet interaction during the period of cold wave outbreak. Chinese J. Atmos. Sci., 16, 718–724, doi: 10.3878/j.issn.1006-9895.1992.06.09. (in Chinese)Google Scholar
  14. Hoskins B. J., and D. J. Karoly, 1981: The steady linear response of a spherical atmosphere to thermal and orographic forcing. J. Atmos. Sci., 38, 1179–1196, doi: 10.1175/1520-0469(1981)038<1179:TSLROA>2.0.CO;2.CrossRefGoogle Scholar
  15. Hoskins B. J., and T. Ambrizzi, 1993: Rossby wave propagation on a realistic longitudinally varying flow. J. Atmos. Sci., 50, 1661–1671, doi: 10.1175/1520-0469(1993)050<1661:RWPOAR>2.0.CO;2.CrossRefGoogle Scholar
  16. Jin R. H., 2012: Middle-range variation of the East Asian subtropical westerly jet and its influence on abnormal character of Meiyu. Ph. D. dissertation, Nanjing University of Information Science & Technology, Nanjing, 15–17. (in Chinese)Google Scholar
  17. Jin R. H., W. J. Li, B. Zhang, et al., 2012: A study of the relationship between East Asia subtropical westerly jet and abnormal Meiyu in the middle–lower reaches of the Yangtze River. Chinese J. Atmos. Sci., 36, 722–732, doi: 10.3878/j.issn.1006-9895.2011.11076. (in Chinese)Google Scholar
  18. Kalnay E., M. Kanamitsu, R. Kistler, et al., 1996: The NCEP/ NCAR 40-year reanalysis project. Bull. Amer. Meteor. Soc., 77, 437–472, doi: 10.1175/1520-0477(1996)077<0437:TNYRP>2.0.CO;2.CrossRefGoogle Scholar
  19. Kuang X. Y., and Y. C. Zhang, 2005: Seasonal variation of the East Asian subtropical westerly jet and its association with the heating field over East Asia. Adv. Atmos. Sci., 22, 831–840, doi: 10.1007/BF02918683.CrossRefGoogle Scholar
  20. Kuang X. Y., Y. C. Zhang, Y. Huang, et al., 2014: Spatial differences in seasonal variation of the upper-tropospheric jet stream in the Northern Hemisphere and its thermal dynamic mechanism. Theor. Appl. Climatol., 117, 103–112, doi: 10.1007/s00704-013-0994-x.CrossRefGoogle Scholar
  21. Lau K. M., G. J. Yang, and S. H. Shen, 1988: Seasonal and intraseasonal climatology of summer monsoon rainfall over East Asia. Mon. Wea. Rev., 116, 18–37, doi: 10.1175/1520-0493(1988)116<0018:SAICOS>2.0.CO;2.CrossRefGoogle Scholar
  22. Li C. Y., Z. T. Wang, S. Z. Lin, et al., 2004: The relationship between East Asian summer monsoon activity and northward jump of the upper westerly jet location. Chinese J. Atmos. Sci., 28, 641–658, doi: 10.3878/j.issn.1006-9895.2004.05.01. (in Chinese)Google Scholar
  23. Liao Q. H., and S. Y. Tao, 2004: The seasonal march of atmospheric circulation over East Asia in the late summer and its role in the formation of the regional persistent precipitation anomaly. Chinese J. Atmos. Sci., 28, 835–846. (in Chinese)Google Scholar
  24. Lin Z. D., 2010: Relationship between meridional displacement of the monthly East Asian jet stream in the summer and sea surface temperature in the tropical central and eastern Pacific. Atmos. Ocean. Sci. Lett., 3, 40–44, doi: 10.1080/16742834.2010.11446840.CrossRefGoogle Scholar
  25. Lin Z. D., and R. Y. Lu, 2005: Interannual meridional displacement of the East Asian upper-tropospheric jet stream in summer. Adv. Atmos. Sci., 22, 199–211, doi: 10.1007/BF02918509.CrossRefGoogle Scholar
  26. Lin Z. D., and R. Y. Lu, 2009: Abrupt northward jump of the East Asian upper-tropospheric jet stream in mid-summer. J. Meteor. Soc. Japan, 86, 857–866, doi: 10.2151/jmsj.86.857.CrossRefGoogle Scholar
  27. Liu H. W., 2009: Multiple-time-scale variability analyses of rainfall during rainy season over North China and study on evolution of large-scale precipitation conditions. Ph. D. dissertation, Chinese Academy of Meteorological Sciences and Nanjing University of Information Science & Technology, Beijing (and Nanjing), 47–51. (in Chinese).Google Scholar
  28. Lu R. Y., 2004: Associations among the components of the East Asian summer monsoon system in the meridional direction. J. Meteor. Soc. Japan, 82, 155–165, doi: 10.2151/jmsj.82.155.CrossRefGoogle Scholar
  29. Lu R. Y., and Y. H. Fu, 2010: Intensification of East Asian summer rainfall interannual variability in the twenty-first century simulated by 12 CMIP3 coupled models. J. Climate, 23, 3316–3331, doi: 10.1175/2009JCLI3130.1.CrossRefGoogle Scholar
  30. Lu R. Y., J. H. Oh, and B. J. Kim, 2002: A teleconnection pattern in upper-level meridional wind over the North African and Eurasian continent in summer. Tellus A, 54, 44–55, doi: 10.3402/tellusa.v54i1.12122.CrossRefGoogle Scholar
  31. Lu R. Y., Z. D. Lin, and Y. C. Zhang, 2013: Variability of the East Asian upper-tropospheric jet in summer and its impacts on the East Asian monsoon. Chinese J. Atmos. Sci., 37, 331–340, doi: 10.3878/j.issn.1006-9895.2012.12310. (in Chinese)Google Scholar
  32. Mei S. L., and Z. Y. Guan, 2009: Propagation of baroclinic wave packets in upper troposphere during the Meiyu period of 1998 over middle and lower reaches of Yangtze River valley. J. Tropical Meteor., 25, 300–306, doi: 10.3969/j.issn.1004-4965.2009.03.007. (in Chinese)Google Scholar
  33. Ren X. J., X. Q. Yang, T. J. Zhou, et al., 2010: Diagnostic comparison of wintertime East Asian subtropical jet and polarfront jet: Large-scale characteristics and transient eddy activities. Acta Meteor. Sinica, 25, 21–33, doi: 10.1007/s13351-011-0002-2.CrossRefGoogle Scholar
  34. Tao S. Y., and J. Wei, 2006: The westward, northward advance of the subtropical high over the western Pacific in summer. J. Appl. Meteor. Sci., 17, 513–525, doi: 10.3969/j.issn.1001-7313.2006.05.001. (in Chinese)Google Scholar
  35. Terao T., 1999a: The zonal wavelength of the quasi-stationary Rossby waves trapped in the westerly jet. J. Meteor. Soc. Japan, 77, 687–699, doi: 10.2151/jmsj1965.77.3_687.CrossRefGoogle Scholar
  36. Terao T., 1999b: Relationships between the quasi-stationary Rossby waves in the subtropical jet and the mass and heat transport in the northern periphery of the Tibetan high. J. Meteor. Soc. Japan, 77, 1271–1285, doi: 10.2151/jmsj1965.77.6_1271.CrossRefGoogle Scholar
  37. Tsay C. Y., and S. K. Kao, 1978: Linear and nonlinear contributions to the growth and decay of the large-scale atmospheric waves and jet stream. Tellus, 30, 1–14, doi: 10.3402/tellusa.v30i1.10306.Google Scholar
  38. Uccellini L. W., 1998: On the role of upper tropospheric jet streaks and leeside cyclogenesis in the development of lowlevel jets in the Great Plains. Mon. Wea. Rev., 108, 1689–1696, doi: 10.1175/1520-0493(1980)108<1689:OTROUT>2.0.CO;2.CrossRefGoogle Scholar
  39. Uccellini L. W., and D. R. Johnson, 1979: The coupling of upper and lower tropospheric jet streaks and implications for the development of severe convective storms. Mon. Wea. Rev., 107, 682–703, doi: 10.1175/1520-0493(1979)107<0682:TCOUAL>2.0.CO;2.CrossRefGoogle Scholar
  40. Xiao C. L., and Y. C. Zhang, 2012: The East Asian upper-tropospheric jet streams and associated transient eddy activities simulated by a climate system model BCC_CSM1.1. Acta Meteor. Sinica, 26, 700–716, doi: 10.1007/s13351-012-0603-4.CrossRefGoogle Scholar
  41. Xiang Y., 2011: The effect of transient eddy on the meridional displacement of the East Asian subtropical westerly jet stream. Ph. D. dissertation, Nanjing University, Nanjing, 65–80. (in Chinese).Google Scholar
  42. Xiang Y., and X. Q. Yang, 2012: The effect of transient eddy on interannual meridional displacement of summer East Asian subtropical jet. Adv. Atmos. Sci., 29, 484–492, doi: 10.1007/s00376-011-1113-5.CrossRefGoogle Scholar
  43. Yang L. M., and Q. Y. Zhang, 2007: Anomalous perturbation kinetic energy of Rossby wave along East Asian westerly jet and its association with summer rainfall in China. Chinese J. Atmos. Sci., 31, 586–595, doi: 10.3878/j.issn.1006-9895.2007.04.04. (in Chinese)Google Scholar
  44. Ye D. Z., S. Y. Tao, and M. C. Li, 1958: The abrupt change of circulation over the Northern Hemisphere during June and October. Acta Meteor. Sinica, 29, 249–263. (in Chinese)Google Scholar

Copyright information

© The Chinese Meteorological Society and Springer-Verlag GmbH Germany, part of Springer Nature 2018

Authors and Affiliations

  1. 1.National Meteorological CenterChina Meteorological AdministrationBeijingChina
  2. 2.Key Laboratory of Semi-Arid Climate Change of the Ministry of Education, College of Atmospheric SciencesLanzhou UniversityLanzhouChina
  3. 3.Chengdu University of Information TechnologyChengduChina

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