Contribution of tropical cyclones to atmospheric moisture transport and rainfall over East Asia

Article English OPEN
Guo, Liang ; Klingaman, Nick P. ; Vidale, Pier Luigi ; Turner, Andy G. ; Demory, Marie-Estelle ; Cobb, Alison (2017)

The coastal region of East Asia (EA) is one of the regions with the most frequent impacts from tropical cyclones (TCs). In this study, rainfall and moisture\ud transports related to TCs are measured over the EA, and the contribution of TCs to the regional water budget is compared with other contributors, especially the mean circulation of the EA summer monsoon (EASM). Based on\ud ERA-Interim re-analysis (1979–2012), the trajectories of TCs are identified using an objective feature tracking method. Over 60% of TCs occur from July to October (JASO). During JASO, TC rainfall contributes 10-30% the of monthly total rainfall over the coastal region of EA; this contribution is highest over the south/southeast coast of China in September. TCs make a larger contribution to daily extreme rainfall (above the 95th percentile): 50-60% over the EA coast and as high as 70% over Taiwan island. Compared\ud with the mean EASM, TCs transport less moisture over the EA. However, as the peak of the mean seasonal cycle of TCs lags two months behind that of the EASM, the moisture transported by TCs is an important source for the water\ud budget over the EA region when the EASM withdraws. This moisture transport is largely performed by westward-moving TCs. These results improve our understanding of the water cycle of EA and provide a useful test bed for evaluating and improving seasonal forecasts and coupled climate models.
  • References (34)
    34 references, page 1 of 4

    Chen, J.-M., T. Li, and C.-F. Shih, 2010: Tropical cyclone- and monsoon-induced rainfall variability in Taiwan. J. Climate, 23, 4107-4120, doi:10.1175/2010JCLI3355.1.

    Chen, Y., E. E. Ebert, K. J. Walsh, and N. E. Davidson, 2013: Evaluation of TRMM 3B42 precipitation estimates of tropical cyclone rainfall using PACRAIN data. J. Geophys. Res., 118, 2184-2196, doi:10.1002/jgrd.50250.

    Chia, H., and C. Ropelewski, 2002: The interannual variability in the genesis location of tropical cyclones in the northwest Pacific. J. Climate, 15, 2934-2944, doi:10.1175/1520-0442(2002)015,2934: TIVITG.2.0.CO;2.

    Dare, R. A., N. E. Davidson, and J. L. McBride, 2012: Tropical cyclone contribution to rainfall over Australia. Mon. Wea. Rev., 140, 3606-3619, doi:10.1175/MWR-D-11-00340.1.

    Dee, D. P., and Coauthors, 2011: The ERA-Interim reanalysis: Configuration and performance of the data assimilation system. Quart. J. Roy. Meteor. Soc., 137, 553-597, doi:10.1002/qj.828.

    Englehart, P. J., and A. V. Douglas, 2001: The role of eastern North Pacific tropical storms in the rainfall climatology of western Mexico. Int. J. Climatol., 21, 1357-1370, doi:10.1002/joc.637.

    Feng, X., R. Wu, J. Chen, and Z. Wen, 2013: Factors for interannual variations of September-October rainfall in Hainan, China. J. Climate, 26, 8962-8978, doi:10.1175/JCLI-D-12-00728.1.

    Ho, C.-H., H.-S. Kim, J.-H. Jeong, and S.-W. Son, 2009: Influence of stratospheric quasi-biennial oscillation on tropical cyclone tracks in the western North Pacific. Geophys. Res. Lett., 36, L06702, doi:10.1029/2009GL037163.

    Hodges, K. I., 1994: A general method for tracking analysis and its application to meteorological data. Mon. Wea. Rev., 122, 2573-2586, doi:10.1175/1520-0493(1994)122,2573: AGMFTA.2.0.CO;2.

    --, 1995: Feature tracking on the unit sphere. Mon. Wea. Rev., 123, 3458-3465, doi:10.1175/1520-0493(1995)123,3458: FTOTUS.2.0.CO;2.

  • Metrics
    views in OpenAIRE
    views in local repository
    downloads in local repository

    The information is available from the following content providers:

    From Number Of Views Number Of Downloads
    Central Archive at the University of Reading - IRUS-UK 0 118
Share - Bookmark