ISSN 1000-0526
CN 11-2282/P
CN 11-2282/P
Character Analysis on CINRADAR Products of Strong Convection Storm Weather in Henan Province
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Abstract:
CINRADAR Products of Puyang and Sanmenxia combined with data of satellite, radio sounding, synoptic chart and rainfall station were used to analyze the process of the strong convective weather such as thunder rain as well as local hailstone happened in the north, west and middle of Henan on June 25 ,2006. The conclusions are: (1) This strong convection storm showed that several cells for strong convection echo during different development stage consisted t o mesoβ convective echoes band namely squall line with 80～400km long, 40 km wide and in NESW direction. (2) During vigorously developing period of sev e re thunderstorm there was a thunderstorm outflow border. (3) In the low level st rong northwest air flow forced the convective echoes band to grow and form the band echoes like bow shape. (4) There was a velocity line of arc shape short ba nd medial the thunderstorm outflow border in front of the severe convective stor m, this velocity line was far away from the area of blockbuster velocity and gra dually disappeared with the outflow border away from the main body of strong con vection storm. (5) The base reflectivity, echo top and vertical integral liquid water content of different type of severe thunderstorm had distinctions during t he strong convection weather with different properties. Thunder wind with short time strong rainfall weather had the base reflectivity in the strong center of 53～63dBz, echo top of 9～14km and vertical integral liquid water content of 38～48kg/m2 in the north, while 53～65dBz base reflectivity, 11～16km echo to p and 48～63kg/m2 vertical integral liquid water content in the west and the m iddle region in Henan Province. (6) There always was mesocyclone during the vigo rously developing stage of severe thunderstorm. Mesocyclone occurred in front of severe convection cell or foregoing inflow trough scoop. These CINRADAR product s characters of severe convective storm are important reference basements in str ong conwection weather forecast and alarm.
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