Specialists and scholars of Japan think that the sand -dust is long -distance transported by upper westerly air from the desert in the northwest China and Loess Plateau in China to Japan.

日本专家学者认为，发生于中国西北沙漠、黄土高原的沙尘通过高空西风气流远距离输送是造成日本黄沙的主要原因。

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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.

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。

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