Advances in Earth Science ›› 2021, Vol. 36 ›› Issue (1): 58-68. doi: 10.11867/j.issn.1001-8166.2021.004

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Simulation Evaluation of AMO and PDO with CMIP5 and CMIP6 Models in Historical Experiment

Song XIA( ), Peng LIU( ), Zhihong JIANG, Jun CHENG   

  1. Key Laboratory of Meteorological Disaster,Ministry of Education (KLME)/Joint International Research Laboratory of Climate and Environmental Change (ILCEC)/Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters (CIC-FEMD),Nanjing University of Information Science and Technology,Nanjing 210044,China
  • Received:2020-10-23 Revised:2020-12-27 Online:2021-03-19 Published:2021-03-19
  • Contact: Peng LIU;
  • About author:XIA Song (1997-), male, Suqian City, Jiangsu Province, Master student. Research areas include climate change. E-mail:
  • Supported by:
    the National Key R & D Program "The global pattern and attribution of interdecadal climate change since the industrial revolution"(2016YFA0600402);"The East Asian climate system response and scenario projection under global warming at 1.5 ℃"(2017YFA0603804)

Song XIA, Peng LIU, Zhihong JIANG, Jun CHENG. Simulation Evaluation of AMO and PDO with CMIP5 and CMIP6 Models in Historical Experiment[J]. Advances in Earth Science, 2021, 36(1): 58-68.

Using the observed sea surface temperature data of the Hadley Center, as well as the model data under historical experiments in the Coupled Model Intercomparison Project Phase 5 (CMIP5) and the Coupled Model Intercomparison Project Phase 6 (CMIP6), the simulation ability of the two most important interdecadal scale modes, the Atlantic Multi-decadal Oscillation (AMO) and the Pacific Decadal Oscillation (PDO), in CMIP5 and CMIP6 was analyzed and evaluated. By comparing the multi-model ensemble, it is found that in terms of spatial patterns, both CMIP6 and CMIP5 can simulate the signals of AMO in the North Atlantic region, but the simulation of CMIP6 is better. For PDO modes, both can simulate the signal in the North Pacific region, while for the PDO signal in the tropical Pacific region, the amplitude of the CMIP6 simulation is significantly closer to the observation. In terms of periodic simulation, the results of CMIP5 and CMIP6 are similar, and both can simulate the 60~70-year period of the AMO and the double periods, namely 20 and 60~70 years, of the PDO. On the whole, CMIP6 has a certain improvement in the simulation of spatial characteristics compared with CMIP5. But there is no significant improvement in the ability of periodic simulation.

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