Rainfall Characteristics and Convective Properties of Mei-Yu Precipitation Systems over South China, Taiwan, and the South China Sea. Part I: TRMM Observations

Weixin Xu; Zipser, Edward J.; Chuntao Liu
December 2009
Monthly Weather Review;Dec2009, Vol. 137 Issue 12, p4261
Academic Journal
Rainfall characteristics and mesoscale properties of precipitation systems in mei-yu seasons over South China, Taiwan, and the South China Sea (SCS) during 1998–2007 are investigated in this study. Mei-yu rainbands are defined using the Tropical Rainfall Measuring Mission 3B42 rainfall product and then applied to divide the mei-yu season into the mei-yu and break periods. In the 10-yr “climatology,” on average, the mei-yu rainbands have a lifetime of 4–5 days and most frequently occur near the South China coast. During the mei-yu periods, rainfall maxima are found over the Pearl River Delta, the foothills of the Yun-Gui Plateau, and Wuyi Mountain, with the first two maxima corresponding to especially heavy rainfall. Intraseasonal variations on the convective structures, especially over land, are distinct among the mei-yu, break, pre-mei-yu, and post-mei-yu, based on analysis of convection intensity proxies and vertical radar reflectivity profiles of precipitation features. Lightning flash rates are consistent with the convective structure. The most frequent lightning over South China and Taiwan is in the pre-mei-yu and the least is during the mei-yu, which suggests different microphysical structures. Therefore, the discrimination of intraseasonal transitions on convective vertical structures may have important implications to the problems of cumulus parameterization, model validation, rainfall estimation, and latent heat retrievals. Intraseasonal variations of convective structures over the SCS are less evident than those over land. Storms over the SCS during the mei-yu are slightly convectively stronger than those in the break. Oceanic features with strong ice scattering have much lower lightning flash rates than their counterparts over land.


Related Articles

  • An Evaluation of the Predictability of Austral Summer Season Precipitation over South America. Misra, Vasubandhu // Journal of Climate;Mar2004, Vol. 17 Issue 6, p1161 

    In this study predictability of austral summer seasonal precipitation over South America is investigated using a 12-yr set of a 3.5-month range (seasonal) and a 17-yr range (continuous multiannual) five-member ensemble integrations of the Center for Ocean–Land–Atmosphere Studies...

  • Corridors of Warm Season Precipitation in the Central United States. Tuttle, John D.; Davis, Chris A. // Monthly Weather Review;Sep2006, Vol. 134 Issue 9, p2297 

    During the warm season in the central United States there often exists a corridor of precipitation where a succession of mesoscale convective systems (MCSs) follow similar paths lasting several days. The total cumulative rainfall within a corridor can be substantial while precipitation at nearby...

  • Dynamical Aspects of Wintertime Cold-Air Pools in an Alpine Valley System. Zängl, Günther // Monthly Weather Review;Sep2005, Vol. 133 Issue 9, p2721 

    This study presents high-resolution numerical simulations in order to examine the dynamical mechanisms controlling the persistence of wintertime cold-air pools in an Alpine valley system. First, a case study of a cold-pool episode is conducted, the formation of which was related to the passage...

  • Spatial and temporal variability of winter and summer precipitation over Serbia and Montenegro. Tošić, I. // Theoretical & Applied Climatology;2004, Vol. 77 Issue 1/2, p47 

    Summary The main characteristics of the spatial and temporal variability of winter and summer precipitation observed at 30 stations in Serbia and Montenegro were analysed for the period 1951–2000. The rainfall series were examined spatially by means of Empirical Orthogonal Functions (EOF)...

  • An Observational Study of Intraseasonal Variations over Southeast Asia during the 1998 Rainy Season. Yokoi, Satoru; Satomura, Takehiko // Monthly Weather Review;Jul2005, Vol. 133 Issue 7, p2091 

    In the present study, intraseasonal variations of precipitation over Thailand [Thailand daily rainfall (TDR)] during 1998 and the accompanying variations of the tropospheric circulation are analyzed, mainly with the use of rain gauge data and the Global Energy and Water Cycle Experiment (GEWEX)...

  • Detecting trends of extreme rainfall series in Sicily. Bonaccorso, B.; Cancelliere, A.; Rossi, G.; Ferraris, L.; Egozcue, J. J. // Advances in Geosciences;2005, Vol. 2, p7 

    The objective of the study is to assess the presence of linear and non linear trends in annual maximum rainfall series of different durations observed in Sicily. In particular, annual maximum rainfall series with at least 50 years of records starting from the 1920's are selected, and for each...

  • Adjustment of Daily Precipitation Data at Barrow and Nome Alaska for 1995-2001. Benning, Jennifer; Daqing Yang // Arctic, Antarctic & Alpine Research;Aug2005, Vol. 37 Issue 3, p276 

    Systematic errors in precipitation measurements are known to affect all types of precipitation gages. These errors are more sensitive for solid precipitation than for rain. In arctic regions, these systematic errors become significantly more pronounced than for other regions due to the...

  • Determination of the onset dates of the rainy season in central Amazon with equatorially antisymmetric outgoing longwave radiation. Garcia, Sâmia R.; Kayano, Mary T. // Theoretical & Applied Climatology;2009, Vol. 97 Issue 3/4, p361 

    The present work provides a new methodology to determine onset dates of the rainy season (ONR) in central Amazon (CAM) using the antisymmetric in relation to the equator outgoing longwave radiation (OLR) (AOLR) data, for the 1979–2006 period. Spatial averages of the AOLR ( $$\overline...

  • Spatial distribution of rainfall in Salem and Namakkal districts. Jegankumar, R.; Nagarathinam, S. R.; Kannadasan, K. // International Journal of Geomatics & Geosciences;2012, Vol. 2 Issue 4, p976 

    The spatial distribution of rainfall shows a unique pattern in Salem and Namakkal Districts. By analyzing the long term rainfall data, the results shows that Summer contributes 18.73%, Southwest monsoon produces 40% and North east 40%. The average mean rainfall of the study area is 844.49mm. The...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics