...环流背景 西太平洋副热带高压 西风槽 [gap=1485]Keywords】: upper reaches of Yellow River,high flow and low flow cycles,circumfluence backdrop,subtropical high over west pacific,westerly trough ..
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大气环流背景场 Large-scale circulation background field
The results indicate that sustainable and stable atmospheric circulation anomalies in Europe and Asia area provide the large-scale circulation background for the sleet weather;and the middle low-level shear line and southwest jet are the major effect systems.
结果表明:欧亚地区持续稳定的大气环流异常为雨雪天气提供了大的环流背景;中低层切变线和西南风急流是强降雪的主要影响系统。
参考来源 - 2008年1月18·2,447,543篇论文数据，部分数据来源于NoteExpress
对流层中低层的暖脊和地面均压场的维持是此次大雾形成的良好环流背景。
The warm high ridge at the middle and low troposphere and the lower pressure of the ground all provide the good circulation background of this heavy fog.
三类降水云的月、年际和年代际变化特征及所对应的环流背景和影响系统具有明显的差异。
There are notable differences for the month, interannual and interdecadal change characteristics of three kinds of precipitation clouds and their circulation background and inducing systems.
结果表明：贵州气候受多种气团活动的影响，各型气团对应特定的天气特征及一定的环流背景。
The results show that the climate in Guizhou is effected by much air masses′ motion, and each has its corresponding weather characteristics.
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