Wave activities characteristics during a sudden sharp drought–flood turn event in 2011 in East China

Wang, Chenghai; Li, Kechen; Santisirisomboon, Jerasorn

doi:10.1002/joc.7030

Cited by 9 publications

(6 citation statements)

References 44 publications

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“…In recent decades, the STDF frequency has peaked 1 month earlier, in late spring and early summer, as a result of major shifts in trend. This finding is consistent with earlier observations of shorter springs (C. Wang et al., 2021; J. Wang et al., 2021). Moreover, it is essential to note that considering the annual or seasonal mean would neutralize the real changes by counteracting opposing trends in different months.…”

Section: Conclusion and Discussionsupporting

confidence: 94%

“…Previous case studies have found that STDFs are closely related to anomalous intra-seasonal oscillations, rapid changes in the intensity and position of the western North Pacific subtropical high (WPSH) and subtropical westerly jet, tropical cyclone landfall, etc. (Yang et al, 2013;Shi et al, 2021;C. Wang et al, 2021;.…”

Section: Conclusion and Discussionmentioning

confidence: 99%

“…In recent years, STDFs have gained increased popular recognition. In China, the middle and lower reaches of the Yangtze River (MLYR) endured the most severe winter‐spring sustained drought in nearly 60 years from January to May 2011 (C. Wang et al., 2021; J. Wang et al., 2021; Yang et al., 2013), which was immediately followed by floods in excess of the alarm level in more than 10 rivers after the region was slammed by five rounds of concentrated heavy precipitation events shortly after June began (Si et al., 2012). In September 2015, South Carolina experienced a rapid transition from drought to flooding in one week, resulting in flash floods and altering the vegetation‐landscape distribution (X.…”

Section: Introductionmentioning

confidence: 99%

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Increasing Occurrence of Sudden Turns From Drought to Flood Over China

Wang,

Shu

et al. 2024

JGR Atmospheres

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This study focuses on a new compounding concern, the sudden turn from drought to flood (STDF), that is becoming increasingly prominent. This study investigates the long‐term trends and variability of STDFs in China during 1961–2020. The findings indicate that STDFs are prevalent in north and northeast China, and the Yangtze River Delta (YRD). The probability of a drought being followed by a severe flood is approaching 35% in northern and northeastern China. Since 1961, the number of STDFs in China has increased at a rate of average 2.8 events per decade. This increase mainly has occurred in late spring and early summer. The likelihood that a drought being followed by a significant pluvial is also increasing. The increasing STDF in northern China is mainly attributable to the increasing flood frequency and volatility of precipitation. Changes in the STDF trend is more dependent on the drought frequency in the YRD.

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Section: Conclusion and Discussionsupporting

confidence: 94%

Section: Conclusion and Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Increasing Occurrence of Sudden Turns From Drought to Flood Over China

Wang,

Shu

et al. 2024

JGR Atmospheres

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“…Over the wide eastern region, including north China, the Yangtze River basin, and south China, while it may also be influenced by the southwest monsoon flow, the atmosphere is majorly dominated by the East Asia monsoon flow. During the spring of 2011, a once‐in‐a‐fifty‐year drought occurred over the Yangtze River basin and south China, which also led to tremendous losses (e.g., Jin et al ., 2013; Lu et al ., 2014; Wang et al ., 2021).…”

Section: Introductionmentioning

confidence: 99%

The 2014 severe drought over northeast China and its comparison with droughts over the southern regions: A perspective from synergic effects of water vapour and cold air

Yuan

Hao

et al. 2022

Intl Journal of Climatology

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Northeast China (NEC) is an agricultural base of the country. It suffered a severe drought in 2014. During the drought, the western Pacific subtropical high is stronger than normal and stretches to the west. The warm and moist air in the southwest edge of the high transports northwestwards and thus cannot affect NEC. Over high latitudes, in the regions west and east to NEC, there are large anomalies in geopotential height, which favour meridional exchange and may lead to stronger-than-normal cold air intrusions. Because of the lack of warm and moist air supply from the south while the invasion of the cold and dry air from the north, the atmosphere over NEC is finally drier and colder than normal in saturation levels. Based on the physical relation between seasonal precipitation and relative humidity, along with the defined C q and C T , indicators for measuring the changes in moisture and temperature, the effects of water vapour and air temperature on the drought can be linearly separated, and thus compared. Results reveal that, at middle and high levels, the dryness of the air, which plays a positive role in the drought, can offset the negative effect of the coldness, and the atmosphere over NEC then maintains a lower-than-normal relative humidity. In the near-surface level, the air is drier and warmer than normal, which facilitates the drought.

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“…In recent years, under the influence of global climate change and abnormal atmospheric circulation, drywet events abrupt alternation have frequently occurred [26]. In 2011, the extreme drywet events abrupt alternation occurred in the middle and lower reaches of the Yangtze River [27,28], which was listed as one of the top ten weather and climate events in China in 2011, causing huge economic losses and ecological environment destruction in the middle and lower reaches of the Yangtze River. The frequency of dry-wet events abrupt alternation in Huaihe River Basin is increasing [29].…”

Section: Introductionmentioning

confidence: 99%

Analysis of Characteristics of Dry–Wet Events Abrupt Alternation in Northern Shaanxi, China

Zhang

Rong

et al. 2021

Water

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In this study, Yulin city and Yan’an city in northern Shaanxi Province were taken as the study area. Based on the diurnal dry–wet events abrupt alternation index DWAAI, the joint probability distribution of two characteristic variables of “urgency” and “alternation” of dry–wet events abrupt alternation was established by using copula function, and the characteristics of dry–wet events abrupt alternation were analyzed. DWAAI was calculated from daily precipitation data and the applicability of the index was verified. On this basis, the two characteristic variables of “urgency” and “alternation” were separated, and the appropriate marginal distribution function was selected to fit them, and the correlation between the two variables was evaluated. Finally, the appropriate copula function was selected to fit the bivariate of each station, and the joint cumulative probability and recurrence period of the two variables were calculated. The results show that the DWAAI index is suitable for the identification of dry–wet events abrupt alternation in the study area. Light and moderate dry–wet events abrupt alternation occurs more frequently, while severe events rarely occur in the study area. The frequency of severe dry–wet events abrupt alternation in Jingbian station and its northern area is greater than that in the southern area, and the risk of dry–wet events abrupt alternation of disasters in the northern area is higher. The greater the degree of “urgency” and “alternation”, the greater the joint cumulative probability and the greater the return period. The return period of severe dry–wet events abrupt alternation was more than five years, while the return period of light and moderate dry–wet events abrupt alternation was less than five years.

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Wave activities characteristics during a sudden sharp drought–flood turn event in 2011 in East China

Cited by 9 publications

References 44 publications

Increasing Occurrence of Sudden Turns From Drought to Flood Over China

Increasing Occurrence of Sudden Turns From Drought to Flood Over China

The 2014 severe drought over northeast China and its comparison with droughts over the southern regions: A perspective from synergic effects of water vapour and cold air

Analysis of Characteristics of Dry–Wet Events Abrupt Alternation in Northern Shaanxi, China

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