Teleconnection Pattern between the Arctic Ice Area and the 500 hPa Geopotential Height Field during the Northern Hemispheric Summer
夏季北极海冰激发的500hPa遥相关型

In this paper, the correlation field between the Arctic ice area and 500 hPa geopotential height field, the one-point correlation maps at 500 hPa, and the 1000-500 hPa thickness difference chart between the strongest arctic ice year and the weakest year for July and August (etc.)are analyzed.According to the foregoing statistical discussion, it may be noted: the arctic ice cold source in summer can be forcing the teleconnection pattern in the northern hemispheric atmosphere. The teleconnection pattern has two-dimensional Rossby wave train and equivalent barotropic structure.The centers of action in the teleconnection pattern can across the westerly jet and into the subtropics, but they only exist in the westerly belt.The teleconnectin pattern effects the atmospheric circulation and weather showing the polar ice being excessive, the polar low pressure being stengthened, the Canada ridge and the Northern American trough being strengthened too, and vice versa.