经向温度梯度的改变，直接影响到对平均经圈环流及西风急流强度的模拟。
The change of meridional temperature gradient influences the strength of the mean meridional circulation and the westerly jets directly.
发现高空低频扰动动能的高值区与西风急流的纬向非对称性和经向切变关系密切。
The results reveal that the high value areas of the kinetic energy of low-frequency fluctuations in the upper level are closely related with the zonal asymmetry and the meridional shear of westerlies.
季风爆发阶段西风急流逐渐离开改则地区并向高原北部移动，在该地区表现为减弱。
During the monsoon onset period, the westerly jet becomes weaker due to its moving away from Gaize to the north.
探讨了东亚地区副热带西风急流(EAJS)位置的年际变化特征、影响及其可能机制。
We study the interannual variability of the extratropical westerly jet over East Asian (EAJS), its impacts and possible mechanisms.
利用原始方程模式探讨了高空西风急流和低空南风急流中锢囚锋环流的演变和增强机制。
The evolution and enhancement of occluded frontal circulation in upper-level westerly jet and lower-level southerly jet are discussed by using a dry primitive equation model.
高空西风急流配合适合的垂直环流，产生动量下传，是超出一般强度的冷空气大风产生的原因；
The downward momentum transportation produced by the high-altitude westerly jet with the suitable vertical circulation is the main reason of the strong gale beyond general cold.
结果表明，我国北部上空的西风急流（及相应的锋区）与澳大利亚的夏季风的低频变化有很好的一致性。
The results show that there is a good consistency between the low -frequency variations of the westerly jet (and its relevant front zone) over the Northern China and Australian summer monsoon.
对东亚季风气候具有决定性影响的系统，如副热带高压、蒙古高压、印度低压以及西风急流等也模拟得比较好。
The large scale systems such as Subtropical High, Mongolia High, Indian Low which have important influence on the East Asia Monsoon are also simulated pretty well.
主要影响系统为登陆台风、西风低槽和低空急流。
The main affecting systems include landfall typhoon, low-level jet stream and west trough.
主要影响系统为登陆台风、西风低槽和低空急流。
The main affecting systems include landfall typhoon, low-level jet stream and west trough.
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