潜热释放和初始位温扰动对锋生的影响

LATENT HEAT AND EFFECTS OF INITIAL POTENTIAL TEMPERATURE DISTURBANCE RELEASE ON FRONTOGENESIS

中文关键词:  锋生  非绝热加热  初始位温扰动  物理量场

英文关键词:Frontogenesis  Diabatic heating  Initial potential temperature disturbance  Physical variable fields

中文摘要:

      在Chan和Cho作的基础上,用中α尺度位温扰动代替了原来的中β尺度位温扰动,并且增加了一个高度函数H(Z),模式还改变了相对湿度的分布,取了可供比较的两个试验,并运行了半地转湿大气锋生模式程序,积分一段时间后,绘出有关的物理量的等值线图,分析、比较了非绝热加热及初始位温扰动对物理量的影响。试验结果表明:初始位温扰动为中α尺度比中β尺度更接近实际情况,对流层湿度分布不均匀,非绝热加热的作用比初始位温扰动的影响明显些。

英文摘要:

      Based on the work of Chan and Cho, a meso-β scale potential disturbance was replaced by a meso-a scale potential disturbance,and add an elevation function-H(z),as:
θ_m=△θ_m·exp[-(x-x₀)²/L_m²]·H(z)
The distributions of relative humidity were changed two experiments which could be compared each other, and run the NSI semi-geostrophic humid atmosphere frontogenesis model produce. After run a period,some contour charts of some physical variables were drew, the effects of diabatic heating and initial potential temperature disturbance on were analyzed and compared physical variables.