Characteristics of the persistent and non-persistent extreme precipitation in China from 1961 to 2016

doi:10.12006/j.issn.1673-1719.2018.016

Abstract

Abstract:

In this study, based on daily gauge precipitation data of 2480 stations from 1961 to 2016, the summer extreme precipitation event was defined using the 95th percentile, and the changes in persistent (last for at least 2 d) and non-persistent (1 d) extreme event in China were analyzed. The results indicate that under global warming, the contribution of extreme precipitation to total precipitation increased in most of China, but it decreased in the central part of Inner Mongolia and the Sichuan Basin. In North China and Southwest China, both persistent and non-persistent extreme precipitation totals decreased; the decreasing trend of persistent extreme precipitation was more significant; extreme precipitation event occurred as non-persistent event. Meanwhile, in the Yangtze River Basin and South China, both extreme precipitation totals increased; especially persistent extreme precipitation increased obviously; extreme precipitation events occurred more as persistent ones.

Key words: China, Persistent extreme precipitation, Non-persistent extreme precipitation, Trend, Persistence structure

Bing-Rui HE,Pan-Mao ZHAI. Characteristics of the persistent and non-persistent extreme precipitation in China from 1961 to 2016[J]. Climate Change Research, 2018, 14(5): 437-444.

Figures/Tables 6

Fig. 1 Spatial distribution of linear trend of (a) summer total precipitation, (b) extreme precipitation, (c) the contribution of extreme precipitation to summer total precipitation and (d) its linear trend in 1961-2016

Fig. 2 Spatial distribution of linear trend of (a) non-persistent extreme precipitation, (b) persistent extreme precipitation, (c) the ratio of persistent extreme precipitation to non-persistent extreme precipitation in 1961-2016

Fig. 3 Time series of summer extreme precipitation, persistent and non-persistent extreme precipitation anomalies (relative to the 30-year average from 1961 to 1990)

Fig. 4 Time-series of contributions of persistent and non-persistent extreme precipitation to extreme heavy rainfall and the ratio of persistent and non-persistent extreme precipitation in (a) North China, (b) South China, (c) Jianghuai region, (d) Southwest China

Table 1 Linear trend of extreme precipitation and two extreme precipitation events, contribution of persistent and non-persistent extreme precipitation and its linear trend, the ratio of persistent and non-persistent extreme precipitation and its linear trend

Fig. 5 Conceptual model of precipitation change in (a) the Yangtze River Basin and South China, (b) North China and Southwest China

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