On the climatology of persistent heavy rainfall events in China

Tang, Yanbing; Gan, Jingjing; Zhao, Lu; Gao, Kun

doi:10.1007/s00376-006-0678-x

Cited by 57 publications

(31 citation statements)

References 17 publications

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“…2) For duration, a single-station PHR event over the MLYRV generally has a duration of $3 days (Tang et al 2006;Bao 2007). 1) For intensity, when the rainfall p $ 25 (or 50) mm day 21 is found at a particular gauge station, it is called a singlestation PHR event.…”

Section: B Analysis Methodsmentioning

confidence: 99%

“…This region is influenced by the East Asian summer monsoon (Tao and Chen 1987;Ding and Chan 2005;Jin et al 2013); therefore, the variation of flood/drought in this region has been the focus in many studies (Shen and Lau 1995;Mao and Xu 2006;Yang et al 2005;Sun and Yang 2005;Huang et al 2007;Zhu et al 2007;Yang and Zhu 2008;Ye and Lu 2012;Jiang et al 2013;Greatbatch et al 2013). The PHR features strong intensity (about 15-50 mm day 21 on average), long duration (3-7 days), and a large area of rainfall band (Tang et al 2006;Bao 2007). Analyses of the long-term station dataset show that persistent heavy rainfall (PHR) events over the MLYRV are abundant in summer.…”

Section: Introductionmentioning

confidence: 99%

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Zonal Oscillation of Western Pacific Subtropical High and Subseasonal SST Variations during Yangtze Persistent Heavy Rainfall Events

Ren¹,

Yang²,

Sun³

2013

Journal of Climate

136

120

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This study examines the relationship between the zonal oscillation of the western Pacific subtropical high (WPSH) and underneath sea surface temperature (SST) variation on a subseasonal time scale, associated with the persistent heavy rainfall (PHR) events over the middle and lower reaches of the Yangtze River valley (MLYRV) in China. A total of 76 PHR events and 45 break events in the summers of 1979-2011 are first identified over the MLYRV and divided into early and late summer groups. During the PHR events over the MLYRV for both groups, the WPSH stretches more westward, accompanied by the positive anomalies of the 500-hPa geopotential height field over East Asia and its coastal region south of 308N and the subseasonal warmer SSTs beneath the WPSH western edge. The time-lagged composites suggest that the WPSH western edge exhibits westward-then-eastward migration on a subseasonal time scale for the PHR events. The zonal changes of the WPSH and anomalous circulation and SST anomaly (SSTA) signals for break events is almost the mirror image of that for the PHR events for the early summer group. Accompanied by the WPSH westward extension, the increased incident solar radiation and decreased latent heat flux over the coastal region of East Asia contribute to the positive SSTAs beneath the western part of the WPSH. The positive SSTAs construct a convective instability that provides an adverse condition for maintaining the anticyclonic anomalies in the mid-lower levels. The persistent SST warming is also favorable to the transition of low-level circulation from anticyclonic to cyclonic anomalies over the coastal region. As a result, the WPSH withdraws eastward after the peak of the rainfall events over the MLYRV.

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Section: B Analysis Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Zonal Oscillation of Western Pacific Subtropical High and Subseasonal SST Variations during Yangtze Persistent Heavy Rainfall Events

Ren¹,

Yang²,

Sun³

2013

Journal of Climate

136

120

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“…The early-flood season persistent heavy rainfall events (PHR events hereafter) are responsible for most severe flood disasters associated with significant economic losses in South China. Thus, they have received much attention (Tao and Chen 1987;Lau et al 1988;Tang et al 2006;Bao 2007Bao , 2008.The intraseasonal oscillation (ISO) has been found responsible for most rainfall variations in the Asian summer monsoon region (Yang 1992; Mao and Chan 2005; Li and Wang 2005; Zhou and Chan 2005; Miura et al 2007; Lin et al 2008; Mao et al 2010; Yang et al 2010; Ren et al 2013, 2015; Pan et al 2013; Chen and Zhai 2014). Two different periodicities of the boreal summer ISO (BSISO) have been identified (Li and Wang 2005): 30-60 days (e.g., Wang et al 2005) and 10-20 days (e.g., Kikuchi and Wang 2010).…”

mentioning

confidence: 99%

mentioning

confidence: 99%

Monitoring early-flood season intraseasonal oscillations and persistent heavy rainfall in South China

Gao¹,

Lin

You³

et al. 2016

Clim Dyn

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Guangxi and Fujian provinces, has the most abundant rainfall in China (Lu 1990). The rainy season in this area is usually divided into the early-flood season (April-June) and the late-flood season (July-September). During the early-flood season, heavy rainfall events and the associated floods frequently cause severe property damages in South China. The late-flood season rainfall is mainly caused by tropical systems moving into South China, whereas the rainfall during the early-flood season is largely associated with the quasistationary subtropical front, called the Mei-Yu front (Chen et al. 2006). The early-flood season persistent heavy rainfall events (PHR events hereafter) are responsible for most severe flood disasters associated with significant economic losses in South China. Thus, they have received much attention (Tao and Chen 1987;Lau et al. 1988;Tang et al. 2006;Bao 2007Bao , 2008.The intraseasonal oscillation (ISO) has been found responsible for most rainfall variations in the Asian summer monsoon region (Yang 1992; Mao and Chan 2005; Li and Wang 2005; Zhou and Chan 2005; Miura et al. 2007; Lin et al. 2008; Mao et al. 2010; Yang et al. 2010; Ren et al. 2013, 2015; Pan et al. 2013; Chen and Zhai 2014). Two different periodicities of the boreal summer ISO (BSISO) have been identified (Li and Wang 2005): 30-60 days (e.g., Wang et al. 2005) and 10-20 days (e.g., Kikuchi and Wang 2010). The wet and dry spells of the BSISO strongly influence extreme hydro-meteorological events, major driving forces of natural disasters, and thus the socio-economic activities in South Asia (Lau and Waliser 2005). Huang et al. (2008) investigated the climatological characteristics of the ISO related precipitation variability in China and found that the ISO begins to amplify in April and weakens in November. Ju and Zhao (2005) showed that the 30-60 days ISO is the most remarkable in strong summer Abstract Rainfall variability during the early-flood season (April-June) in South China is largely controlled by both the 10-20 and 20-70-day intraseasonal oscillations (ISO). In this study, a method is described to monitor the ISO and persistent heavy rainfall in South China. Three existing daily real-time 20-70-day ISO indices are compared. It is found that the regional East Asia-western North Pacific (EAWNP) ISO index best represents the earlyflood season 20-70-day ISO in South China. A new bivariate boreal summer ISO index is designed to describe the 10-20-day ISO in the EAWNP region. Composite analysis shows that the rainfall anomaly in South China is well captured by the northward propagation of both the 10-20 and 20-70-day ISO. With different phase combinations of the 10-20 and 20-70-day EAWNP ISO, nine conditions are defined ranging from those favorable to those unfavorable to heavy rainfall in South China that can be used to effectively monitor the early-flood season ISO and persistent heavy rainfall in South China.

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“…Tang et al (2006) analyzed the climatology of persistent heavy rainfall events in China during 1951China during -2004. Using station daily precipitation data and the corresponding 30 km ×30 km gridded data, the definition of persistent heavy rainfall (PHR) events was given mainly in three aspects-intensity, extent, and duration-and 197 PHR events were then identified.…”

Section: Introductionmentioning

confidence: 99%

Changes in regional heavy rainfall events in China during 1961–2012

Zou

Ren

2015

Adv. Atmos. Sci.

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A new technique for identifying regional climate events, the Objective Identification Technique for Regional Extreme Events (OITREE), was applied to investigate the characteristics of regional heavy rainfall events in China during the period 1961-2012. In total, 373 regional heavy rainfall events (RHREs) were identified during the past 52 years. The East Asian summer monsoon (EASM) had an important influence on the annual variations of China's RHRE activities, with a significant relationship between the intensity of the RHREs and the intensity of the Mei-yu. Although the increase in the frequency of those RHREs was not significant, China experienced more severe and extreme regional rainfall events in the 1990s. The middle and lower reaches of the Yangtze River and the northern part of South China were the regions in the country most susceptible to extreme precipitation events. Some stations showed significant increasing trends in the southern part of the middle and lower reaches of the Yangtze River and the northern part of South China, while parts of North China, regions between Guangxi and Guangdong, and northern Sichuan showed decreasing trends in the accumulated intensity of RHREs. The spatial distribution of the linear trends of events' accumulated intensity displayed a similar so-called "southern flooding and northern drought" pattern over eastern China in recent decades.

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On the climatology of persistent heavy rainfall events in China

Cited by 57 publications

References 17 publications

Zonal Oscillation of Western Pacific Subtropical High and Subseasonal SST Variations during Yangtze Persistent Heavy Rainfall Events

Zonal Oscillation of Western Pacific Subtropical High and Subseasonal SST Variations during Yangtze Persistent Heavy Rainfall Events

Monitoring early-flood season intraseasonal oscillations and persistent heavy rainfall in South China

Changes in regional heavy rainfall events in China during 1961–2012

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