[Objective] The aim was to simulate the development process of one spring hailstone weather in Hohhot. [Method] By dint of three dimensional cumulus numerical models, and considering real time radar echo document and ...[Objective] The aim was to simulate the development process of one spring hailstone weather in Hohhot. [Method] By dint of three dimensional cumulus numerical models, and considering real time radar echo document and ground hailstorm data, numerical simulation was conducted to the development process of one hailstorm in Hohhot. [Result] The numerical simulation suggested that in the early period of the development of hailstorm cloud, the low layer convergence and high layer divergence were weak and the divergence layer height was low (4.5 km), Vor had weak symmetric dual structure; in the maturing period of the formation of hail cloud, the low layer convergence and high layer divergence strengthened and the divergence layer height increased obviously (9.5 km). Vor has obvious dual symmetric structure. Qg and Qt value increased rapidly and the top of Qt uplifted (10.5 km). The maximum upward airstream speed of output model Wm, divergence Div, vertical vector of vortex Vor, specific water content of graupel Qg, total specific water content Qt, ground solid precipitation Rs and theoretical value, radar echo and ground observation fit well. [Conclusion] The model had capacity to simulate strong convective cloud development process and could be developed and used continuously in the professional work of the weather modification.展开更多
基金Supported by Inner Mongolia Meteorological Bureau Scientific Innovation Program (nmqxkjcx 200811)
文摘[Objective] The aim was to simulate the development process of one spring hailstone weather in Hohhot. [Method] By dint of three dimensional cumulus numerical models, and considering real time radar echo document and ground hailstorm data, numerical simulation was conducted to the development process of one hailstorm in Hohhot. [Result] The numerical simulation suggested that in the early period of the development of hailstorm cloud, the low layer convergence and high layer divergence were weak and the divergence layer height was low (4.5 km), Vor had weak symmetric dual structure; in the maturing period of the formation of hail cloud, the low layer convergence and high layer divergence strengthened and the divergence layer height increased obviously (9.5 km). Vor has obvious dual symmetric structure. Qg and Qt value increased rapidly and the top of Qt uplifted (10.5 km). The maximum upward airstream speed of output model Wm, divergence Div, vertical vector of vortex Vor, specific water content of graupel Qg, total specific water content Qt, ground solid precipitation Rs and theoretical value, radar echo and ground observation fit well. [Conclusion] The model had capacity to simulate strong convective cloud development process and could be developed and used continuously in the professional work of the weather modification.
