TITLE:
Modal Analysis of Linear Mesoscale Convective System in Fujian Heavy Rainstorm
AUTHORS:
Hong Guo, Meijin Huang, Xingyu Wu, Wei Hong, Tingting Li
KEYWORDS:
Sustained Heavy Rain in Fujian, Linear Mesoscale Convective System, Organizational Mode
JOURNAL NAME:
Journal of Geoscience and Environment Protection,
Vol.6 No.9,
August
29,
2018
ABSTRACT: This paper uses the daily precipitation observation data and Doppler weather
radar observation data from 2017 observatories and regional automatic stations
in Fujian, China from 2009 to 2015. The characteristics of formation
mode, organization mode, moving direction and duration of linear mesoscale
convective system during non-typhoon continuous rainstorm in Fujian were
analyzed. This paper gives the definition of linear mesoscale convective systems,
trailing and parallel mesoscale convective systems. The above characteristics
of the linear mesoscale convective system during the continuous heavy
rain in Fujian differ greatly from the non-sustained heavy rain process: The
linear mesoscale convective system in the continuous heavy rain in Fujian is
mainly constructed later, and the trailing and parallel mesoscale convective
system is conducive to the occurrence of continuous heavy rain in Fujian.
The moving direction of the linear mesoscale convective system and convective
monomer is mainly in the east direction, and the system duration is
mostly 4 - 10 hours. The formation time of the monomer to form a linear
convection time is mainly 1 - 3 hours, which is 2 hours earlier than the organization
process of the general linear mesoscale convective system. The linear
convective system formed to a dead time of an average of 5 hours,
slightly longer than the general linear mesoscale convective system.