Changes in summer extreme precipitation in Northeast Asia and their relationships with the East Asian summer monsoon during 1961-2009

Wang, Lei; Wu, Zhengfang; He, Hongshi; Wang, Fuxue; Du, Haibo; Zong, Shengwei

doi:10.1002/joc.4683

Cited by 40 publications

(29 citation statements)

References 52 publications

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“…The intensity of the EASM has a significant impact on the distribution of summer precipitation in China. Strong EASM results in greater than normal precipitation in Northern China [66]. We detected a significant positive correlation between the EASMI and SPEII-12, which confirms this theory.…”

Section: Discussionsupporting

confidence: 85%

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Estimation of Variability Characteristics of Regional Drought during 1964–2013 in Horqin Sandy Land, China

Zhang

Guo

et al. 2016

Water

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Drought has an important influence on the hydrological cycle, ecological system, industrial and agricultural production, and social life. Based on the different time scales of characteristics of drought variability, the standardized precipitation evapotranspiration index (SPEI), a multi-timescale index with consideration of evaporation, was used in this study to estimate the spatial and temporal variability characteristics of drought. Climatic data from 15 meteorological stations across Horqin Sandy Land during 1964-2013 were used to calculate the SPEI of 1, 3, 6, and 12 months. In order to examine the relationship between droughts and other variables, 10 extreme climate indices were calculated based on the daily precipitation and maximum/mean/minimum temperature data of 15 meteorological stations, and linkages between SPEI-12 and atmosphere indices were established using by the cross wavelet transform method. The results indicated that the climate of Horqin Sandy Land had a tendency towards drought conditions, which is particularly apparent from the year 2000 onwards. During the study period, drought events were frequent in the region. Mild drought occurred in a quarter of the month, with that of moderate, severe, and extreme drought accounting for 0.11, 0.05, and 0.02 of the total months. The spatial trend of multi-timescale drought revealed that there was an increase in the severity of drought throughout Horqin Sandy Land, among which the magnitude in southern parts was larger than that of northern parts. The results also showed that the short time scale drought negatively correlated with precipitation extremes and positively correlated with temperature extremes. Furthermore, the long time scale drought (SPEI-12) was associated with atmosphere indices. Significant resonance periods were found between El Nino southern oscillation (ENSO), the East Asian summer monsoon index (EASMI), and SPEI-12.

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Section: Discussionsupporting

confidence: 85%

“…For example, we found a clear decreasing trend of SPEI-3 reported by Xu, who reported a drying trend in Northeastern China, which was statistically significant in areas corresponding to Horqin Sandy Land [65]. Elsewhere, Wang et al identified a dry trend in Northeastern China [66].…”

Section: Discussionsupporting

confidence: 54%

Estimation of Variability Characteristics of Regional Drought during 1964–2013 in Horqin Sandy Land, China

Zhang

Guo

et al. 2016

Water

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“…More precipitation occurs as rain instead of snow, and snow melts earlier (Emori, 2005;Trenberth, 2011;Fischer and Knutti, 2015). The impact of climate change on precipitation is changing the precipitation amount and type, causing an increase in precipitation (about 0.1 to 24.5 mm decade −1 ) (Wang et al, 2017) and a decrease in snow at Toyama. The annual precipitation may increase to about 3000 mm by 2030; and annual snowfall will decrease to less than 1000 mm by 2050 (Table 2).…”

Section: Impact Of Climate Change On Rainfallmentioning

confidence: 99%

Temporal variations of groundwater tables and implications for submarine groundwater discharge: a 3-decade case study in central Japan

Zhang

et al. 2017

Hydrol. Earth Syst. Sci.

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Abstract. Fresh submarine groundwater discharge (SGD) is the key pathway of flux and nutrients for the groundwater from land to the ocean. SGD flux is a current issue of discussion and a means to clarify the coastal marine system under climate change. SGD flux accounts for about one-quarter of the river runoff in the Katakai alluvial fan in Uozu, Toyama, Japan, which is an ideal area to study SGD flux considering the need for a rapid response to climate change and the prior research on SGD there. In this paper, the monthly groundwater table's condition over 30 years is analyzed using monthly rainfall, snowfall, and the climate change index. Rainfall has been on an upward trend, but the snowfall has decreased over 40 years. Furthermore, the groundwater table at monitoring wells in the coastal area increased, as a result of the increased rainfall. However, the relationship between snowfall and groundwater is negative. As expected by Darcy's law, SGD flux was controlled by the hydraulic gradient of the coastal groundwater. The estimated historic SGD flux by groundwater table variation shows an upward trend of SGD. Considering the increase in precipitation and the groundwater table, SGD flux may increase under climate change.

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“…For instance, the Wutaishan Meteorological Station in the Shanxi Province (38.95°N, 113.52°E) was founded in 1956 and was relocated in 1998, resulting in an altitude change from 2895.8 to 2208.3 m (Ma et al ., ). Therefore, the migrated meteorological station has a mean annual precipitation that showed a sharp decreasing trend in 1998 (Wang et al ., ). As a result, the stations with significant migration distances and those missing more than 30 days of precipitation from 1961 to 2013 are eliminated from this analysis.…”

Section: Data Sources and Algorithmsmentioning

confidence: 97%

“…Wang et al . () found that the times when R95p most frequently occurred are consistent with those when the north moving EASM rain belt is over Northeast Asia. Zhang et al .…”

Section: Introductionmentioning

confidence: 99%

Variations in the start, end, and length of extreme precipitation period across China

Guo

et al. 2017

Intl Journal of Climatology

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Using the daily precipitation records during 1961–2013 from 686 meteorological stations across China and the atmospheric circulation indexes, this study investigates the spatio‐temporal changes in the occurrence time and length of the extreme precipitation period (EPP), as well as their influencing factors. The results show the following aspects: (1) In the last 53 years, the start dates of the extreme precipitation period (EPPS) generally advanced. The end dates of the extreme precipitation period (EPPE) are delayed, which show an increasing trend. The lengths of the extreme precipitation period (EPPL) in most of the China meteorological stations increased. (2) The spatial patterns of the trends in the occurrence time and length of the extreme precipitation period are similar and show obvious clustering. The occurrence time and length of the extreme precipitation period have obvious spatial gradient differences in their average values. In southeastern China, the average EPPS is earlier, EPPE is later than those in other regions, and their EPPL is prolonged. The EPP in northeastern China begins later and ends earlier, and its EPPL is shorter than that in other regions. (3) The western Pacific subtropical high, Northern Hemisphere polar vortex, Antarctic Oscillation, and western Pacific warm pool have significant effects on the occurrence time and length of EPP over China, and different regions show different effects.

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Changes in summer extreme precipitation in Northeast Asia and their relationships with the East Asian summer monsoon during 1961-2009

Cited by 40 publications

References 52 publications

Estimation of Variability Characteristics of Regional Drought during 1964–2013 in Horqin Sandy Land, China

Estimation of Variability Characteristics of Regional Drought during 1964–2013 in Horqin Sandy Land, China

Temporal variations of groundwater tables and implications for submarine groundwater discharge: a 3-decade case study in central Japan

Variations in the start, end, and length of extreme precipitation period across China

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