Abstract
Changes in climate extremes have become a hot issue in the research field of climate change recently. Many studies have reported that climate extremes have occurred more frequently and with increasing intensity in recent decades. In this study, thresholds of precipitation and drought extremes were determined by the cumulative distribution function, and their spatiotemporal changes over the past half-century in China were analyzed by relative change rate. The results show that: (1) precipitation extremes increased in all regions except North China, while increasing trends of drought extremes were detected in all regions except Northwest China and the Qing–Tibet Plateau; (2) the maximum change rates in frequency of precipitation extremes were found in Northwest China and the Qing–Tibet Plateau, with values of 16.13% and 8.12%, and the maximum change rates in frequency of drought extremes were in Southwest and Southeast China, whose increases in intensity of drought extremes were also the maximum; (3) variation in precipitation extremes showed a relatively mixed pattern with higher heterogeneity compared to that of drought extremes; and (4) changes in precipitation and drought extremes relate to mid-intensity, lower-intensity, and annual precipitation.
Highlights
Nowadays, one of the hottest issues of global concern is climate change and its impacts
PartAnnual of Eurasia, China has a complex terrain and diverse climatic types, the Qing–Tibet precipitation decreases from southeast to northwest, northwest, Plateau with the highest temperature in South China and the lowest at the northern border and including a continental monsoon climate
Table 1), and the results show that increased precipitation extreme (PE) during 1985–2007 was detected in most of the six regions, except North China, while reduced drought extreme (DE) was detected mainly in Northwest China and the regions, except North China, while reduced DE was detected mainly in Northwest China and the
Summary
One of the hottest issues of global concern is climate change and its impacts. Extreme climate events have occurred more frequently under continuous global warming [1,2]. China has a complexdecreases terrain andfrom diverse climaticto types, northwest, with the highest temperature in South. China and the lowest at the northern border and to including a continental monsoon climate. PartAnnual of Eurasia, China has a complex terrain and diverse climatic types, the Qing–Tibet precipitation decreases from southeast to northwest, northwest, Plateau with the highest temperature in South China and the lowest at the northern border and including a continental monsoon climate. Annual temperature decreases from southeast to lowest northwest, withthe theQing–Tibet highest precipitation greater than 1600 precipitation mm, in the southeast coastalfrom region, and the Plateau (Figure 1a). Annual decreases southeast to northwest, with the highest temperature in.
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