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CMIP5 기후 모형에서 나타나는 북서태평양 아열대 고기압의 변동성

Variability of the Western North Pacific Subtropical High in the CMIP5 Coupled Climate Models

  • 김은진 (과학기술연합대학원대학교) ;
  • 권민호 (과학기술연합대학원대학교) ;
  • 이강진 (한국해양과학기술원)
  • Kim, Eunjin (Integrated Ocean Science, Korea University of Science and Technology) ;
  • Kwon, MinHo (Integrated Ocean Science, Korea University of Science and Technology) ;
  • Lee, Kang-Jin (Ocean Circulation and Climate Research Center, Korea Institute of Ocean Science and Technology)
  • 투고 : 2016.10.17
  • 심사 : 2016.11.24
  • 발행 : 2016.12.31

초록

The western North Pacific subtropical high (WNPSH) in boreal summer has interannual and interdecadal variability, which affects East Asian summer monsoon variability. In particular, it is well known that the intensity of WNPSH is reversely related to that of summer monsoon in North East Asia in association with Pacific Japan (PJ)-like pattern. Many coupled climate models weakly simulate this large-scale teleconnection pattern and also exhibit the diverse variability of WNPSH. This study discusses the inter-model differences of WNPSH simulated by different climate models, which participate in the Coupled Model Intercomparison Project phase 5 (CMIP5). In comparing with reanalysis observation, the 29 CMIP5 models could be assorted into two difference groups in terms of interannual variability of WNPSH. This study also discusses the dynamical or thermodynamics factors for the differences of two groups of the CMIP5 climate models. As results, the regressed precipitation in well-simulating group onto the Nino3.4 index ($5^{\circ}N-5^{\circ}S$, $170^{\circ}W-120^{\circ}W$) is stronger than that in poorly-simulating group. We suggest that this difference of two groups of the CMIP5 climate models would have an effect on simulating the interannual variability of WNPSH.

키워드

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피인용 문헌

  1. Can coupled models perform better in the simulation of sub-seasonal evolution of the western North Pacific subtropical high than atmospheric models in boreal summer? pp.1530261X, 2018, https://doi.org/10.1002/asl.862