CAJ | 학술논문

通过位涡、相对湿度与相当位温关系的讨论并结合2003年10月10-12日河北深秋时节在冀中南部发生的特大暴雨,分析了倾斜涡度发展理论.发现此次暴雨过程中存在干侵入现象,且干侵入的发生、发展对暴雨过程具有重要影响;干侵入沿相当位温高值脊向对流层低层伸展,引起对流层低层气旋性涡度的发展,使降水强度加剧.干侵入是暴雨形成的一种重要机制.
통과위와、상대습도여상당위온관계적토론병결합2003년10월10-12일하북심추시절재기중남부발생적특대폭우,분석료경사와도발전이론.발현차차폭우과정중존재간침입현상,차간침입적발생、발전대폭우과정구유중요영향;간침입연상당위온고치척향대류층저층신전,인기대류층저층기선성와도적발전,사강수강도가극.간침입시폭우형성적일충중요궤제.
Combined with a violent rainstorm taked place in Hebei and Shandong provinces from October 10 to 12,2003,and through a discussion on relationship among the potential vorticity,the relative humidity and the constant potential temperature,the theory about development of slantwise vortieity WaS analyzed.It is discovered that dry intrusion flow has an important influence on rainstorm course.Dry intrusion flow spreads to lower layer of troposphere along hish value spine of constant potential temperature,causes cyclone vorticity development in lower layer of troposphere,aggravates precipitation intensity and is one of the important mechanism to cause the rainstorm.