主办单位:中国气象局沈阳大气环境研究所
国际刊号:ISSN 1673-503X
国内刊号:CN 21-1531/P

Journal of Meteorology and Environment ›› 2023, Vol. 39 ›› Issue (6): 51-60.doi: 10.3969/j.issn.1673-503X.2023.06.007

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Simulation and projection of climate change in Central China based on CMIP6 multi-model ensemble

Miao WANG1(),Pengcheng QIN1,Chenxu SHE2,Xiaofang ZHAO1,Mingwei YANG3   

  1. 1. Wuhan Regional Climate Center, Wuhan 430074, China
    2. Xiangyang Meteorological Service, Xiangyang 441021, China
    3. Xiaogan Meteorological Service, Xiaogan 432020, China
  • Received:2022-03-11 Online:2023-12-28 Published:2024-01-27

Abstract:

Utilizing daily meteorological observation data from Central China from 1961-2014, along with downscaled and bias-corrected data from 12 CMIP6 models from 1961-2100, this study assesses the spatial and temporal distributions of temperature and precipitation simulations of the CMIP6 models for the region, using the selected temperatures from six models and the precipitation data from four models. Based on the ensemble mean of the selected model results, the change trends in temperature and precipitation for Central China during different periods from 2021 to 2100 under three future scenarios i.e. SSP1-2.6, SSP2-4.5, and SSP5-8.5 were analyzed. The results indicate that the ensemble mean provides better interannual variability in temperature simulations than those of precipitation, while the spatial simulation of precipitation is better than that of temperature. Under all three scenarios, both regional temperature and precipitation show increasing trends, with temperature rise rates of 0.13 ℃/decade, 0.30 ℃/decade, and 0.62 ℃/decade, and precipitation rise rates of 16.2 mm/decade, 12.3 mm/decade, and 19.3 mm/decade, respectively. For the future period from 2021 to 2100 under the three scenarios, precipitation in Central China is projected to decrease in the south and to increase in the north. Near-term and mid-term temperatures are expected to decrease in the west and to increase in the central and eastern parts, while the long-term trend indicates that temperature increases across the region and only decreases in the western mountainous area of Hubei.

Key words: Precipitation, Temperature, CMIP6, Model Ensemble

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