[1]Xu Fan,Ma Long,Huang Xing,et al.Changes in extreme temperature and precipitation and their responses to climate drivers in Inner Mongolia from 1960 to 2021[J].Research of Soil and Water Conservation,2025,32(06):225-235.[doi:10.13869/j.cnki.rswc.2025.06.013]
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Changes in extreme temperature and precipitation and their responses to climate drivers in Inner Mongolia from 1960 to 2021
Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
32
Number of periods:
2025 06
Page number:
225-235
Column:
Public date:
2025-10-20
- Title:
- Changes in extreme temperature and precipitation and their responses to climate drivers in Inner Mongolia from 1960 to 2021
- Keywords:
- Inner Mongolia; extreme climate index; spatiotemporal characteristics; climate driving factors
- CLC:
- P467
- DOI:
- 10.13869/j.cnki.rswc.2025.06.013
- Abstract:
- [Objective] The frequent occurrence of extreme temperature and precipitation events in Inner Mongolia highlights the need to investigate these extreme events and their responses to the driving factors, aiming to provide a reference for addressing climate change in the region. [Methods] Based on the meteorological observation data from 104 meteorological stations in Inner Mongolia, including maximum temperature, minimum temperature, and precipitation, 25 extreme climate indices were selected. Linear regression, Mann-Kendall(MK) trend tests, Spearman correlation analysis, and Mantel tests were used. [Results] A significant overall warming trend was observed across Inner Mongolia. From 1960 to 2021, the extreme high temperature indices, TX90 p, TN90 p, TR, TXx, TNx, and WSDI significantly increased at rates of 0.140 d/a, 0.211 d/a, 0.374 d/a, 0.137 ℃/a, 0.024 ℃/a and 0.10 d/a, respectively. The extreme low temperature indices TX10p, TN10p, FD, ID and CSDI significantly decreased at rates of -0.10 d/a, -0.23 d/a, -0.37 d/a, -0.22 d/a, and -0.10 d/a, respectively. The extreme high temperature gradually decreased from west to east, while the extreme low temperature showed the opposite pattern. From 1960 to 2021, the extreme precipitation occurrence showed an increasing trend. The indices PRCPTOT, R95P, R99P, SDII, R10, R20, and R25 significantly increased at rates of 0.331 mm/a, 0.087 mm/a, 0.022 mm/a, 0.002 mm/d/a, 0.014 mm/a, 0.005 mm/a, and 0.003 mm/a, respectively. The indices of continuous wet days(CWD) and continuous dry days(CDD) decreased at rates of -0.001 d/a and -0.203 d/a, respectively. Extreme precipitation was relatively abundant in the eastern and central regions, but relatively scarce in the western regions. The variation trend of extreme precipitation indices was faster in the east and slower in the west. From 1960 to 2021, Inner Mongolia exhibited an overall trend of climatic warming and wetting, with a significant shortening of drought periods. The Atlantic multidecadal oscillation (AMO) and global mean land-ocean temperature(GMLOT) contributed significantly to extreme temperature and precipitation events, with both reaching a statistically significant level of p<0.001. [Conclusion] From 1960 to 2021, Inner Mongolia showed an overall trend of climate warming and wetting, with extreme high temperature and extreme precipitation indices showing significant increases. Specifically, the extreme high temperature exhibited a gradual decrease from west to east, while extreme precipitation gradually increased from west to east. Extreme low temperature indices significantly decreased, and drought periods were notably shortened. The AMO and GMLOT had significant impacts on extreme temperature and precipitation events.
- References:
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Last Update:
2025-12-10