LASG,;
Institute;
of;
Atmospheric;
Physics,;
Chinese;
Academy;
of;
Sciences,;
Beijing;
100029,;
China;
Institute;
of;
Heavy;
Rain,;
China;
Meteorological;
Administration,;
Wuhan;
430074,;
China;
China;
Meteorological;
Administration;
Training;
Center,;
Beijing;
100081,;
China;
LASG,;
Institute;
of;
Atmospheric;
Physics,;
Chinese;
Academy;
of;
Sciences,;
Beijing;
100029,;
China;
Shanghai;
Typhoon;
Institute;
of;
China;
Meteorological;
Administration,;
Shanghai;
200030,;
China;
China;
Meteorological;
Administration;
Training;
Center,;
Beijing;
100081,;
China;
Institute;
of;
Heavy;
Rain,;
China;
Meteorological;
Administration,;
Wuhan;
430074,;
China;
National;
Meteorological;
Center;
of;
the;
China;
Meteorological;
Administration,;
Beijing;
100081,;
China;
Meiyu; front,; low; vortex; precipitation,; dry; intrusion,; mechanisim,; vapor; image,; potential; vorticity,; relative; humidity;