Abstract
To expand torrential rain, which is a meso- and microscale weather process, to a meso- and long-scale weather process, in this paper, we choose South China as a sample region and propose the conception of the “Cumulative Effect” of torrential rain (CETR) by using daily precipitation observational data from 740 stations. Through a statistical analysis of the observations, three indexes—continuous time (L d), control area (A r), and precipitation contribution rate (Q s)—are used to define the CETR and indicate the torrential rain processes. The relationships between the CETR and simultaneous total precipitation over South China are analyzed in the pre-flooding and latter flooding seasons. This analysis shows that on both interannual and interdecadal scales, the three indexes are highly correlated with simultaneous total precipitation over South China in the pre-flooding season and latter flooding season. Moreover, an empirical orthogonal function (EOF) analysis is performed to classify the spatial distribution of the CETR. In both the pre-flooding season and the latter flooding season, the four major spatial models of torrential rain are similar to those of total precipitation over South China. With regard to the amount of precipitation caused by the CETR, the latter flooding season is affected more significantly than the pre-flooding season. Regarding the geographical distribution of precipitation, the opposite result occurs. In conclusion, in both the pre-flooding season and the latter flooding season, the CETR influences and even determines the amount and distribution of precipitation over South China.
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References
Bei N, Zhao S, Gao S (2002) Numerical simulation of a heavy rainfall event in China during July 1998. Meteorog Atmos Phys 80(1–4):153–164
Bao M, Huang RH (2006) Characteristics of the interdecadal variations of heavy rain over China in the last 40 years. Chin J Atmosph Sci 30:1057(in Chinese)
Bao M (2007) The statistical analysis of the persistent heavy rain in the last 50 years over China and their backgrounds on the large scale circulation. Chin J Atmosph Sci 31(5):779–792(in Chinese)
Chen H, Yu R, Li J, et al. (2010) Why nocturnal long-duration rainfall presents an eastward-delayed diurnal phase of rainfall down the Yangtze River Valley. J Clim 23(4):905–917
Chang CP, Zhang Y, Li T (2000a) Interannual and interdecadal variations of the east Asian summer monsoon and tropical Pacific SSTs. Part I : roles of the subtropical ridge. J Clim 13(24):4310–4325
Chang CP, Zhang Y, Li T (2000b) Interannual and interdecadal variations of the East Asian summer monsoon and tropical Pacific SSTs. Part II: meridional structure of the monsoon. J Clim 13(24):4326–4340
Chen TJ, Wang CC, Lin TW, et al. (2005) Characteristics of low-level jets over northern Taiwan in Mei-Yu season and their relationship to heavy rain events. Mon Weather Rev 133(1):20–43
Ducrocq R, Lafore P, et al. (2002) Storm-scale numerical rainfall prediction for five precipitating events over France: on the importance of the initial humidity field. Weather Forecast 17(6):1236–1256
Doswell Iii CA, Ramis C, Romero R, et al. (1998) A diagnostic study of three heavy precipitation episodes in the Western Mediterranean Region. Weather Forecast 13(1):102–124
Ding YH, He C (2006) The summer monsoon onset over the tropical eastern Indian Ocean: the earliest onset process of the Asian summer monsoon. Adv Atmos Sci 23(6):940–950
Frich P, Alexander LV, Della-Marta P, et al. (2002) Observed coherent changes in climatic extremes during the second half of the twentieth century. Clim Res 19(3):193–212
Gao ST, Zhao SX, Zhou XP, Sun SQ, Tao SY (2003) Progress of research on sub-synoptic scale and mesoscale torrential rain systems. Chin J Atmosph Sci 27:618(in Chinese)
Hou SC, Kuo HC, Chen GT (1998) The development of an intense East Asian summer monsoon disturbance with strong vertical coupling. Mon Weather Rev 126(10):2692
He YH, Guan CH, Lin GX, et al. (1998) Oscillation and distribution of rainfall during second rainy season in South China. J Trop Meteorol 14(4):359–363(in Chinese)
Homar V, Romero R, Ramis C, et al. (2002) Numerical study of the October 2000 torrential precipitation event over eastern Spain: analysis of the synoptic-scale stationarity. Ann Geophys 20(12):2047–2066
Li J, Yu RC, Sun W (2014) Duration and seasonality of hourly extreme rainfall in the central eastern China. J Meteorol Res 27(6):799–807
Li J, Yu R, Zhou T (2008) Seasonal variation of the diurnal cycle of rainfall in southern contiguous China. J Clim 21(22):6036–6043
Lebeaupin C, Ducrocq V, Giordani H (2006) Sensitivity of torrential rain events to the sea surface temperature based on high-resolution numerical forecasts. J Geophys Res 111(D12):1125–1132
Luo Y, Wang H, Zhang R, et al. (2012) Comparison of rainfall characteristics and convective properties of monsoon precipitation systems over South China and Yangtze and Huai River Basin. J Clim 26:7128
Sun Y, Solomon S, Dai A, et al. (2006) How often does it rain? J. Climate 19(6):916–934
Xu WX, Zipser EJ, Liu CT (2009) Rainfall characteristics and convective properties of Mei-Yu precipitation systems over South China, Taiwan, and the South China Sea. Part I: TRMM observations. Mon Weather Rev 137(12):4261–4275
Xu W, Zipser EJ, Chen YL, et al. (2012) An orography-associated extreme rainfall event during TiMREX: initiation, storm evolution, and maintenance. Mon Weather Rev 140(8):2555–2574
Yu R, Xu Y, Zhou T, et al. (2007) Relation between rainfall duration and diurnal variation in the warm season precipitation over central eastern China. Geophys Res Lett 34(13):173–180
Yang QW, Huang ZM, Lin AL (2001) Variations of annual frequency of landfall typhoons in South China and its relation with ENSO. Meteorol Monogr 27:12(in Chinese)
Zhou T, Yu R, Chen H, et al. (2008) Summer precipitation frequency, intensity, and diurnal cycle over China: a comparison of satellite data with rain gauge observations. J Clim 21(16):3997–4010
Zhang SX, Feng GL, Zhao JH (2013) “Cumulative Effect” of torrential rain in the middle and lower reaches of the Yangtze River. Acta Phys Sin 62:496(in Chinese)
Zhai PM, Zhang XB, Wan H, et al. (2005) Trends in total precipitation and frequency of daily precipitation extremes over China. J Clim 18:1096–1108
Acknowledgments
This research was jointly supported by The National Natural Science Foundation of China (Grant Nos. 41305100, 41530531, 41375078), the Global Change Study of Major National Scientific Research Plan of China (Grant No. 2012CB955902), and the Meteorological Special Project of China (Grant No. GYHY201306021).
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Chu, Q., Wang, Q., Qiao, S. et al. Spatial-temporal characteristics of the “cumulative effect” of torrential rain over South China. Theor Appl Climatol 127, 911–921 (2017). https://doi.org/10.1007/s00704-015-1669-6
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DOI: https://doi.org/10.1007/s00704-015-1669-6