Diagnostic Analysis of a Continuous Meiyu Front Heavy Rainfall Event From June 18 to 22, 2005 in Southern Zhejiang
Abstract：Based on the reanalysis data （1°×1°, 4-times-a-day＇ s） of NCEP, the conventional data and hourly intensive rainfall data, a diagnosis of continuous rainfall event from June 18 to 22, 2005 in southern Zhejiang is made. The result showed the rainfall event was caused by the low-level shear, south- west vortex and cold air on the circulation pattern of the two troughs and a ridge, and had obvious me-soscale characters. The 12 mesoscale rain cluster which continuous generated caused the heavy rainfall The large value of vorticity center can reflect the strong of mesoscale rain cluster and the area of heavy rainfall. The strong of vertical speed and vertical helicity were consistent with the mesoscale rain cluster. The jet-cores caused the water vapor increased. From the point of view the configuration of rainfall areas and jet-core location, the heavy rainfall happened on the left of the jet-cores.
Keywords：Meiyu front heavy rainfallmesoscale rain clustervertical helicityjet-core
Publication Date：2012-01-01
Online Publishing Date：2026-09-12(First online date of this platform, not the publication date of the document)
Pages：6( 32-37 )