The effect of upper tropospheric perturbation PV on the development of the South-West Meso-cyclogenesis is discussed on Hoskins PV Principle in terms of conservation of PV on isobaric surface and humid isentropic PV.Upper tropospheric perturbation PV,which dilates slantwise downward and southward,is found to be an important factor to influence the low-level South-West Mesocyclone.

基于Hoskins位渦理論思想從等壓面位渦守恒和濕等熵位渦守恒的角度來研究對流層高層位渦擾動(dòng)對低層西南渦的發(fā)生發(fā)展影響女人內射色人人在线，發(fā)現(xiàn)對流層高層位渦擾動(dòng)是影響西南渦發(fā)生發(fā)展的重要因素亚洲欧美日韩AⅤ中文三区，它對西南渦的影響表現(xiàn)出它有向南向下傾斜伸展的特點(diǎn)。

There is a certain extent difference for the temperature at each isobaric surface, and the difference is most when the convection is active.

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The temporal and special cross section of MPV1 on isobaric surface can reflect the evolution of dry intrusion.

4等壓面上的MPV1空間、時(shí)空剖面均能很好地描述干侵入的演變特征久久精品无码亚洲一区二区。

It is a method for the estimate of the surface wind using the observed wind in the nearest standard isobaric surface above the top of the planetary boundary layer under the actual topographic conditions.

文中提出了一種在實(shí)際地形條件下5级黄色网站，利用行星邊界層頂上方最鄰近標(biāo)準(zhǔn)等壓面的實(shí)測風(fēng)推算地面風(fēng)的方法——修正的Taylor螺線法午夜福利網站AV。

From this model the height of 500 mb surface andthe thickness between a certain selected isobaric surface in the vicinity of thetop of friction layer and 500 mb surface can be forecasted.

在某些近似下，作者推導(dǎo)了一組閉合的預(yù)告500mb 高度和500mb 與某等壓面之間的厚度的方程式毛片免费全部播放完整；把它推廣九九精品视频在线播放8，作者還求出了一組預(yù)告三層等壓面高度的方程式。

The results showed as followed :（ 1 ） The most important factor of atmospheric general circulation controlled and influenced the immigration of WBPH＇s populations was the patterns and the tempo-spatial changes of potential height field on 850hPa isobaric surface,（2） There were relative coincident air streams with a northern exposure on 850hPa isobaric surface during the migrations northward of WBPH and there were concurrent airflows with a southern exposure on 925hPa isobaric surface during the migration southward.

利用MM5中尺度數(shù)值預(yù)報(bào)模式和由PCVSAT系統(tǒng)接收的氣象數(shù)據(jù)對2個(gè)典型的白背飛虱南久久久久亚洲色欲AV无码裤子、北遷降落過程的大氣背景進(jìn)行了數(shù)值模擬和客觀分析99热在线这里只有精品3，模擬和分析結(jié)果表明：（1）850hPa等壓面上氣壓場的配置及其隨時(shí)空的演變是控制和影響白背飛虱遷入的最重要的大氣環(huán)流因素。

Through analysis of potential vorticity in isobaric surface field, in high-troposphere a positive potential vorticity disturbance before rainstorm generation;positive potential vorticity disturbance in high-troposphere downward, form one vertical disturbance column, now corresponding precipitation develop stage;When near ground arises negative potential vorticity disturbance, precipitation also weaken.

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