分析表明：（1）上层逆温与位于其顶部附近较为强劲的偏北气流是相伴出现的，其性质属下沉逆温。
The analysis demonstrates that : ( 1 ) The upper temperature inversion which is the subsidence inversion , appears together with the relatively strong deviating north air stream near to its top .
下沉逆温