Precipitation extremes observed over and around the Taklimakan Desert, China

Abstract

The Taklimakan Desert (TD) is the largest desert in China located in the Tarim Basin (TB) in China’s arid region. This study is a review of the change in precipitation and its extremes since 1961 and the high-impact extreme precipitation events in 2012–2021, particularly in 2021, with a focus on the TD along with the surrounding oases and mountainous regions.The TB has experienced significantly warmer and wetter trends since 1961, and extreme rainfall has increased significantly in the TD and its surrounding areas during the 2000s. In the TB, the year 2021 was identified as the 4th warmest for 1961–2021, and was remembered for unprecedented extreme events. Three high-impact extreme events that occurred in 2021 are highlighted, including extreme heavy rainfall over Hetian in mid-June. The earliest extreme rainfall event occurred over North Bazhou in early spring, and the strongest heavy snowfall over Baicheng in April. In addition, we also discussed the underlying physical mechanisms of extreme events over the TB and proposed novel perspectives and unresolved questions on the sciences of heavy rainfall in arid regions. Our results provide a reference for the physical mechanism, attribution, and high-resolution modeling of extreme events.

Numerical Simulation and Parameter Optimization of a New Reed–Nylon Net Combined Sand Fence

“…The average range of maximum wind speed at the monitoring station is 5.7-15.5 m/s, and the maximum wind speed is 22 m/s. The average maximum wind speed in the hinterland of the Taklamakan Desert is generally around 20 m/s, and the maximum wind speed at the mouth of the wind does not exceed 27 m/s [12]. Therefore, three wind speeds of 15 m/s, 20 m/s, and 25 m/s of incoming flow are selected for analysis in this paper.…”

Ratio Limits of Water Storage and Outflow in Rainfall-runoff Process

“…With the influence of climate change and extreme El Niño events (Ward, et al, 2014;Cai, et al, 2014), flood events caused by extreme precipitation are occurring frequently in many regions around the world (Kirezci, et al, 2020;Najibi and Devineni, 2018;Almazroui, 2020). From 2020 to 2023, catastrophic floods caused by several extreme rainfall events were reported in Germany (Tradowsky, et al, 2023), China (Hsu, et al, 2021), Italy (Valente, et al, 2023), Japan (Kobayashi, et al, 2023), Pakistan (Nanditha, et al, 2023) and other developed or developing countries and regions, even in some desert areas (e.g., Taklimakan Desert (Li and Yao, 2023) and Atacama Desert (Cabré, et al, 2023)). Research shows that under a high emissions scenario, in latitudes above 40 o north, compound flooding could become more than 2.5 times as frequent by 2100 compared to present (Bevacqua, et al, 2020).…”