Spatio-temporal characteristics of precipitation and dryness/wetness in Yangtze River Delta, eastern China, during 1960–2012

Wang, Yuefeng; Xu, Yuan; Lei, Chaogui; Li, Guang; Han, Longfei; Song, Song; Yang, Liu; Deng, Xiaojun

doi:10.1016/j.atmosres.2016.01.008

Cited by 89 publications

(48 citation statements)

References 47 publications

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“…Precipitation in eastern China, particularly the precipitation in the southeastern coastal regions, is heavily affected by TCs. In particular, the fractional contribution of TC-induced precipitation to consecutive 1 day, 3 day, and 7 day maximum summer precipitations exceeds 50% in parts of eastern China with highly developed socioeconomy, including the Yangtze River Delta and the Pearl River Delta regions, where extreme events may pose great challenges for regional socioeconomy and water resources management [Zhang et al, 2011a;Wang et al, 2016]. Figure 6 also illustrates that TC-induced precipitation exhibits larger fractional contribution to consecutive 1 day and 3 day maximum summer precipitations but smaller fractional contribution to consecutive 7 day maximum summer precipitation.…”

Section: Tc-induced Extreme Precipitationmentioning

confidence: 99%

Summer extreme precipitation in eastern China: Mechanisms and impacts

et al. 2017

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With the highest population density in China, eastern China has an unshakable position in Chinese socioeconomic development. To understand the precipitation changes and the related mechanisms is of great significance for regional management of water resources and agricultural irrigation. In this study, the impacts of western North Pacific subtropical high (WNPSH) on precipitation changes in eastern China and the underlying processes are investigated. The results indicate that the strength and location of WNPSH are in close relations with the changes of summer precipitation in eastern China, and their influences vary across both space and time. In particular, WNPSH exerts remarkable impacts on precipitation in June and July in Jiang‐Huai region and precipitation in June in South China such as the Pearl River basin. The interannual variations of WNPSH exhibit significant correlations with water vapor flux in East Asia, and the variations of the location and direction of the west flank of the WNPSH are well corroborated with the influences of the East Asian summer monsoon (EASM) on precipitation in eastern China. The westward extension of WNPSH tends to favor the strong moisture transport to East Asia, intensify the EASM, and thus increase water vapor flux in East Asia, which greatly benefits the occurrence of Meiyu regimes in Jiang‐Huai region. Besides, analysis results also show that the westward extension of WNPSH drives tropical cyclones southward so as to increase the occurrence of extreme precipitation in South China. This study helps to bridge the knowledge gap in the relationship between WNPSH, tropical cyclones, and summer precipitation events in eastern China.

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Section: Tc-induced Extreme Precipitationmentioning

confidence: 99%

Summer extreme precipitation in eastern China: Mechanisms and impacts

et al. 2017

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“…At the local scale, the Yangtze River Delta, which overlaps with the north subtropical zone, has experienced sharp increases in total precipitation (PRCPTOT, R95p), heavy precipitation (RX1day, RX5day), and wet days (CWD) during 1960-2012, e.g. PRCPTOT showed a sharp increase of 23.70 mm decade −1 (Wang et al, 2016). These results are consistent with the increase in the trend in the north subtropical zone observed in our study, but the magnitude of the increase (e.g.…”

Section: Comparisons With Previous Studiesmentioning

confidence: 99%

“…The extreme precipitation events have proven destructive with the ongoing rapid urbanization, and even threaten two major economic centers of China, namely the Yangtze River Delta (Li et al ., ) and the Pearl River Delta (Du et al ., ). In previous studies, increased annual precipitation and decreased consecutive dry days (CDD) have been reported in the Yangtze River Delta (Wang et al ., ), while a decrease in annual precipitation, an increase in CDD (Zhao et al ., ), and a drying trend in the rainy season (Zhang et al ., ) were discovered in the Pearl River Basin. The changing patterns of extreme precipitation over this region are potentially complex.…”

Section: Introductionmentioning

confidence: 99%

Variability of precipitation extremes and dryness/wetness over the southeast coastal region of China, 1960–2014

Ren

Chen

et al. 2017

Intl Journal of Climatology

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The spatio‐temporal variability of precipitation extremes was investigated over the southeast coastal region of China, based on daily precipitation records from 73 meteorological stations for the period of 1960–2014. The standardized precipitation index (SPI), rotated empirical orthogonal function (REOF), and wavelet analysis methods were used to assess the characteristics of dryness/wetness patterns, as well as their correlations with the El Niño/Southern Oscillation (ENSO). Most of the extreme indices exhibited increasing trends at the regional scale over the past 55 years and generally had larger magnitudes than in other regions, with heavy precipitation that was more concentrated in time. The annual total wet day precipitation (PRCPTOT), total precipitation on very wet days (R95p), and total precipitation on extremely wet days (R99p) displayed sharp increases, with magnitudes of 22.60 (P = 0.33), 21.50 (P = 0.02) and 7.80 (P = 0.06) mm decade−1, respectively. In contrast, the regional averaged maximum consecutive wet days (CWD) decreased by −0.10 days decade−1 (P = 0.48). The stations with sharp increases in extreme heavy precipitation were mainly located in the north and coastal areas. In addition, three dominant dryness/wetness patterns (REOFs) corresponding to different climatic partitions were identified. With regard to the time coefficients (PCs) of each REOF, no significant trend in PC1 was detected, while an increasing trend (P < 0.001) in PC2 and decreasing trend (P < 0.001) in PC3 were found. The evolution of dryness/wetness occurred over a 4‐ to 12‐year period in the first three REOFs, and their PCs all had significant positive correlations with ENSO at a 12‐month lag time. This study suggests that the risks of heavy precipitation and flooding are likely to increase in southeast China, particularly in the northern and coastal areas, and extreme events may be strengthened in the southern subtropical zone during certain seasons.

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“…by Coles, ; Katz et al ., ; Coelho et al ., ; Katz, ) are the most commonly used. The threshold approach considers the precipitation total exceeding a defined precipitation threshold value (Štekl, ; Muluneh et al ., ; Tošić et al ., ; Wang et al ., ; Ngo‐Duc et al, ), or a percentile (Wi et al ., ; Allan et al ., ; Wang et al ., ; Yin et al ., ; Blenkinsop et al, ). Although the peaks over a defined percentile may lead to more adequate results because of its capability to reflect microclimates, yet they are based on an empirical distribution.…”

Section: Introductionmentioning

confidence: 99%

Characteristics of extreme precipitation in the Vosges Mountains region (north‐eastern France)

Minářová

Müller

Clappier

et al. 2017

Intl Journal of Climatology

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In this research, different characteristics (duration, affected area, extremity, and synoptic conditions) related to extreme precipitation events (EPEs), and the trends in frequency of EPEs in the Vosges Mountains (VG) region (north‐eastern France) have been analysed and the events were evaluated on regional scale using the Weather Extremity Index. The index combines three aspects of an EPE – rarity, spatial extent, and duration – and it enables a quantitative comparison of these aspects in a data set of EPEs. In this study, 54 EPEs (which occurred during 1960–2013) were selected using daily precipitation totals from meteorological stations. Although possible maximum duration of an EPE was set to 10 days, all detected EPEs lasted 1–5 days. The prevailing short EPEs (1–2 days) affected smaller areas as compared to long EPEs (3–5 days). Instead of the winter maximum of mean precipitation in the VG, the autumn EPEs prevailed in the data set (40% of all EPEs including the four strongest EPEs). Using the manual and the automated catalogues (Grosswetterlagen and SynopVisGWL, respectively), majority of the 54 EPEs was found associated with the west cyclonic weather type; however, none of the five maximum events was produced by this weather type. The two strongest EPEs were related to the stationary cold front rather than to the expected strong zonal circulation. The EPEs were mostly related to strong southwest airflow and flux of specific humidity. No significant trend was found in frequency of EPEs during the 54 years. Our results highlight new insights into the extreme precipitation in VG region. We believe that the ranking of EPEs according to their extremity in the VG region provides useful information for local decision making authorities, engineers, and risk managers.

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Spatio-temporal characteristics of precipitation and dryness/wetness in Yangtze River Delta, eastern China, during 1960–2012

Cited by 89 publications

References 47 publications

Summer extreme precipitation in eastern China: Mechanisms and impacts

Summer extreme precipitation in eastern China: Mechanisms and impacts

Variability of precipitation extremes and dryness/wetness over the southeast coastal region of China, 1960–2014

Characteristics of extreme precipitation in the Vosges Mountains region (north‐eastern France)

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