季风和中纬西风是影响亚欧大陆东岸天气和气候的两种重要的大气环流形式。可是人们在谈论东亚天气和气候时 ,多只着眼于季风环流而不谈西风环流 ,其实中纬西风对东亚天气和气候的影响虽不如季风大 ,但其影响也是不可忽视的。一些地区的天气变化和某些气候特征的形成 ,都与其有 The monsoon and mid-western westerlies are two important types of atmospheric circulation that affect the weather and climate on the east coast of the Eurasian continent. However, when people talk about weather and climate in East Asia, they mostly focus on the monsoon circulation without talking about the westerly circulation. In fact, the effect of the mid-western westerly on the weather and climate in East Asia is not as great as the monsoon, but its influence cannot be ignored. In some areas, weather changes and the formation of certain climatic features are associated with