COMPARATIVE ANALYSIS OF CHINESE CLIMATE BETWEEN THE PLIOCENE AND FUTURE CLIMATE WARMING SCENARIO
The mid-Pliocene was characterized by warmer and wetter conditions,with a weakened meridional temperature gradient compare to the pre-industrial period,making it a crucial reference for understanding future climate warming.Based on the 12 mid-Pliocene simulations from the mid-Pliocene Model Intercomparison Project Phase2(PlioMIP2)and the 26 shared socio-economic pathway(SSP)5-8.5 experiments from the Coupled Model Intercomparison Project phase 6(CMIP6),this study contrasts the Chinese climate between the mid-Pliocene and future global warming scenario.The study reveals that compared to the pre-industrial period,warming in Northern China is more pronounced under both two warming climates,with winter surface air temperature(SAT)increasing significantly more than summer or annual means.Additionally,both two warming climates exhibit characteristics of increased precipitation,particularly notable in the significant increase in summer precipitation in Northeast and North China.However,there are also significant differences between the climate changes in the mid-Pliocene and the SSP5-8.5 scenario.Compared to multi-model ensemble(MME)mean 4.49 ℃ warming of the SSP5-8.5 scenario,the warming of the mid-Pliocene experiences a more moderate warming of 3.00 ℃.Furthermore,during the mid-Pliocene period,the rise in summer precipitation surpasses that of future warming scenario.This is attributed to the more intensive East Asian summer monsoon during the mid-Pliocene,which allows the monsoon moisture to reach further into the northern areas of China and generate more precipitation.And in boreal winter,southerly anomalies occur in Southern China,indicating a relative weakening of the winter monsoon and a weakening of the dry northerly winds from the inland,leading to an increased precipitation.Mid-Pliocene effective precipitation is weaker than future warming scenario after considering evapotranspiration,with a decrease in annual mean effective precipitation and an increase in future warming scenario in Northwest China,and the mid-Pliocene characterized by wetter winters and drier summers in the Southeast China,whereas future warming scenario shows the opposite trend.
mid-PlioceneChinese climateEast Asian monsoonPlioMIP2SSP5-8.5
万方数据
维普
