Of the three tropical precipitation clouds in winter in hainan the water vapor content is the highest in cumulonimbus and varies most greatly during precipitation , the second highest in cumulus congestus and the lowest in stratocumulus opacus .

在海南岛冬季三类热带降水云中，积雨云水汽含量最大，降水期间变化幅度也最大，浓积云次之，最低是蔽光层积云。