CAJ | 학술논문

通过对6月27-29日出现在玉林大暴雨进行动力机制分析,结果表明：这次大暴雨在两槽两脊较强经向环流下,高原槽东移为暴雨产生提供了有利的动力条件;850hPa切变线快速南压至桂中,触发了当地不稳定能量释放;低层强辐合、高层强辐散的耦合利于垂直上升运动和MCS的发生发展;强降水出现在MCS发展最旺盛的时段。
통과대6월27-29일출현재옥림대폭우진행동력궤제분석,결과표명：저차대폭우재량조량척교강경향배류하,고원조동이위폭우산생제공료유리적동력조건;850hPa절변선쾌속남압지계중,촉발료당지불은정능량석방;저층강복합、고층강복산적우합리우수직상승운동화MCS적발생발전;강강수출현재MCS발전최왕성적시단。
Basing the heavy rain on June 27-29 in Yulin City,the dynamic mechanism was analyzed.The results show that： The heavy rain occurs in the strong meridional circulation of two slots and two ridges.The plateau trough moving eastward provides storms a favorable dynamic condition.On 850hpa,the shear line fast moving southward triggers local instability energy releasing.The coupling of low-level strong convergence and high-level strong divergence is conducive to the development of vertical velocity and MCS.The heavy precipitation occurs in the most productive periods of MCS development.