北半球大气环流对北极海冰异常响应的数值试验

A NUMERICAL EXPERIMENT FOR RESPONSE OF ATMOSPHERIC CIRCULATION IN THE NORTHERN HEMISPHERE TO ANOMALY OF ARCTIC SEA ICE

本文利用全球9层15波谱模式,模拟了北极海冰后退期持续异常对北半球大气环流季节变化的影响。结果表明:这种影响是明显的,它遍及近地面层,对流层和平流层等各层;波及极地——高纬——中纬——低纬整个北半球;既有同时的,又有滞后的,且还具有季节变化等特点。

In this paper, the seasonal changes of atmospheric circulation in the Northern He-misphere induced by persistent anomaly of Arctic sea ice have bean examined. The global spectral model (15-wave trunctioa, 9-level, primitive equations) was used in the experiments of persistent anomalous increase of Arctic sea ice. The results quite clearly indicate that anomalous increase of Arctic sea ice has the effects on atmospheric circul-ation at surface, tropospheric and stratospheric layers. They affected the areas of polar. high, mid, and low-latitude and the entire Northern Hemisphere. The effects have featug-res with both synchronous and lagging properties in time and still have seasonal changes.