Mean Climatic Characteristics in High Northern Latitudes in an Ocean-Sea Ice-Atmosphere Coupled Model
  • 【摘要】

    Emphasizing the model's ability in mean climate reproduction in high northern latitudes, results from an ocean-sea ice-atmosphere coupled model are analyzed. It is shown that the coupled model can sim... 展开>>Emphasizing the model's ability in mean climate reproduction in high northern latitudes, results from an ocean-sea ice-atmosphere coupled model are analyzed. It is shown that the coupled model can simulate the main characteristics of annual mean global sea surface temperature and sea level pressure well, but the extent of ice coverage produced in the Southern Hemisphere is not large enough. The main distribution characteristics of simulated sea level pressure and temperature at 850 hPa in high northern latitudes agree well with their counterparts in the NCEP reanalysis dataset, and the model can reproduce the Arctic Oscillation (AO) mode successfully. The simulated seasonal variation of sea ice in the Northern Hemisphere is rational and its main distribution features in winter agree well with those from observations.But the ice concentration in the sea ice edge area close to the Eurasian continent in the inner Arctic Ocean is much larger than the observation. There are significant interannual variation signals in the simulated sea ice concentration in winter in high northern latitudes and the most significant area lies in the Greenland Sea, followed by the Barents Sea. All of these features agree well with the results from observations. 收起<<

  • 【作者】

    刘喜迎  张学洪  俞永强  宇如聪 

  • 【作者单位】

    State Key Laboratory of Numerical Modeling for Atmospherics Sciences and Geophysical Fluid Dynamics

  • 【刊期】

    大气科学进展(英文版) ISTIC SCI 2004年2期

  • 【关键词】

    coupled model  arctic oscillation  sea ice 

  • 【基金项目】

    中国科学院知识创新工程项目 国家自然科学基金 theNational Key Project of fundamental Research of China