Especially, the Secondary compensation circulation ascending from the divergent source in the Bay of Bengal and decending in the west Pacific is the primary factor maintaining the subtropical ridge of the west Pacific High in the mid-summer.

• 特别是由孟加拉弯辐散源上升进入西太平洋下沉的次级补偿环流,是盛夏维持西太平洋高压最主要因素。