Simulation Performance and Case Study of Extreme Events in Northwest China Using the BCC-CSM2 Model

Song, Minghao; Pei, Yufei; Zhang, Shaobo; Wu, Tongwen

doi:10.3390/rs14194922

Cited by 3 publications

(2 citation statements)

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“…And this change also took place around 1986 [34]. In addition, the majority of prior research regarding extreme climate events in this region has shown that extreme climate events, such as storms and droughts, are becoming more frequent due to inhomogeneous precipitation [16,28,29,[35][36][37]. Whether the climatic extremes have changed in accordance with the changes of the average temperature and precipitation remains to be studied.…”

Section: Introductionmentioning

confidence: 99%

“…Therefore, it is imperative to gather more data regarding climate change from different countries and regions to make impactful decisions. Extreme climate events caused by climate change have been analyzed from regional [14][15][16][17][18][19][20] to global scales [21][22][23][24]. Regarding temperature extremes, there is a significant upward trend in nearly all regions.…”

Section: Introductionmentioning

confidence: 99%

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Temporal and Spatial Variations of Extreme Climate Events in Northwestern China from 1960 to 2020

Liang,

Niu,

2023

Sustainability

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In the context of global warming, the frequency and intensity of extreme weather and climate events have been increasing. Characterized by scarce water resources and fragile ecosystems, Northwest China has experienced a climate shift since the 1980s. In this study, spatial and temporal patterns of changes in the indices of climate extremes, based on daily maximum and minimum temperature and precipitation at 172 meteorological stations in Northwest China, were analyzed for the period 1960–2020. A total of 26 indices divided into two categories, 16 extreme temperature indices and 10 extreme precipitation indices, were used. Analysis of these indices revealed a general warming trend in the region, which consistent with global warming. The regional occurrence of summer days, tropical nights, growing season length, warm nights, warm days, and warm spell duration index increased by 0.22, 0.14, 0.29, 0.73, 0.46, and 0.11 days/decade, respectively. Over the same period, the occurrence of frost days, icing days, cool nights, cool days, and cold spell duration index decreased by −0.38, −0.21, −0.93, −0.44, and −0.13 days/decade, respectively. The decreasing trends in cold extremes were greater than the increasing trends in warm extremes. Additionally, many regions have experienced increasing trends in several precipitation indices. The annual total wet-day precipitation increased by 5.3 mm/decade. Increasing trends were also evident in simple daily intensity index, heavy precipitation days, very heavy precipitation days, very wet days, and extremely wet days. Consecutive dry days decreased by −1.5 days/decade, while no significant change was observed in consecutive wet days. In contrast to the remarkable spatial consistency of temperature extremes, precipitation extremes exhibited large and expected spatial variability. Most precipitation indices showed increasing trends in the western region of Northwest China and decreasing trends in the eastern part of Northwest China. These results indicate a transition from cold–dry to warm–wet in Northwestern China. Our findings suggest that Northwest China is experiencing more extreme climate events, which could consequently impact hydrological processes, ecological processes, and human health. These observations increase our understanding of the interactions between climate change and regional climate variability, which is conducive to improving disaster prevention.

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