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弱对流
相关语句
  weak convection
    Weak convection occurs sometimes in nighttime with maximum reflectivity of about 20 dBz.
    此外,在晚上也有弱对流,最大反射率约为20 dBz。
短句来源
    A Diagnostic Analysis of a Local Heavy Rainfall Event in Weak Convection Condition
    一次弱对流引发局地特大暴雨天气的诊断分析
短句来源
    A local heavy rainfall event in Ningshan, Shaanxi Province on 28-29 August 2003 is diagnosed. The results show that the event occurred in a weak convection condition with convergence at high and low-level against strong convection.
    对2003年8月28~29日宁陕特大暴雨过程诊断分析结果表明:特大暴雨发生在低层辐合、高层辐合,不利于强对流发展的弱对流环境中。
短句来源
  weak convection
    Weak convection occurs sometimes in nighttime with maximum reflectivity of about 20 dBz.
    此外,在晚上也有弱对流,最大反射率约为20 dBz。
短句来源
    A Diagnostic Analysis of a Local Heavy Rainfall Event in Weak Convection Condition
    一次弱对流引发局地特大暴雨天气的诊断分析
短句来源
    A local heavy rainfall event in Ningshan, Shaanxi Province on 28-29 August 2003 is diagnosed. The results show that the event occurred in a weak convection condition with convergence at high and low-level against strong convection.
    对2003年8月28~29日宁陕特大暴雨过程诊断分析结果表明:特大暴雨发生在低层辐合、高层辐合,不利于强对流发展的弱对流环境中。
短句来源
  weak convection
    Weak convection occurs sometimes in nighttime with maximum reflectivity of about 20 dBz.
    此外,在晚上也有弱对流,最大反射率约为20 dBz。
短句来源
    A Diagnostic Analysis of a Local Heavy Rainfall Event in Weak Convection Condition
    一次弱对流引发局地特大暴雨天气的诊断分析
短句来源
    A local heavy rainfall event in Ningshan, Shaanxi Province on 28-29 August 2003 is diagnosed. The results show that the event occurred in a weak convection condition with convergence at high and low-level against strong convection.
    对2003年8月28~29日宁陕特大暴雨过程诊断分析结果表明:特大暴雨发生在低层辐合、高层辐合,不利于强对流发展的弱对流环境中。
短句来源
  “弱对流”译为未确定词的双语例句
    , symmetric stability is the possible mechanism of meso- 0 -scale system. Over the convectively unstable area, baroclinic item of moist potential vorticity (mpv2) is the dominant factor.
    对称不稳定可能是中β尺度系统发生发展的一种重要机制,在中β尺度系统发生的弱对流不稳定区,湿位涡的斜压项mpv2起了主导作用。
短句来源
    In this paper,Rossby wave-CISK near the equator is investigated according to the wind-pressure field balance relation. It is found that Rossby wave-CISK modes not only propagate in the west-east direction,but also in the north-south direction for the weak cumulus convective heating and the modes are a kind of decayed waves;
    本文根据低纬热带大气中的风压场平衡关系对CISK-Rossby波进行了研究,指出对于弱对流加热,CISK-Rossby波既可以向东西方向传播,又可以向南北方向传播,并且这种弱对流加热所激发的CISK-Rossby波是一种稳定的减幅波;
短句来源
    Results show that average location of subtropical ridge in 1998 is in the south of secular average position, summer monsoon is stronger with long time strong convection activity in South China and Yangtze River Basins,weak summer monsoon and convection in North China.
    结果指出 ,1 998年夏季副高脊线的平均位置偏南 ,华南地区和长江流域的夏季风较强 ,强对流维持时间长 ; 华北地区的夏季风较弱 ,对流比常年偏弱 ;
短句来源
    the stability conditions of the front zone turn into the moist neutral above 900 hPa from the weak convective unstable under 900 hPa;
    锋区90 0hPa以下是一个大气弱对流不稳定区 ,向上气层变为潮湿中性直至 40 0hPa ,等θse线基本上呈垂直分布 ;
短句来源
    Symmetric stability is the possible mechanism of meso-β-scale system. Over the convectively unstable area,baroclinic item of moist potential vorticity(mpv2) is the dominant factor.
    对称不稳定可能是中β尺度系统发生发展的一种重要机制,在中β尺度系统发生的弱对流不稳定区,湿位涡的斜压项mpv2起了主导作用。
短句来源
查询“弱对流”译词为用户自定义的双语例句

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  weak convection
The results of an experimental check are presented for the visualization of weak convection air flows near a heated body.
      
Rainfall that occurs during days without low OLR (weak convection with warm cloud tops or isolated deep convection) contributes to 69% of the total rainfall during dry sequences and 45% during wet sequences.
      
Very weak convection of the reaction suspensions in microgravity is another important factor.
      
It is shown that a weak convection region forms near the ingot top in the liquid zone at a certain stage of solidification and then develops downward gradually, and the negative segregation is detected in the weak convection region.
      
A curious pulsing of the precipitation is seen, indicating either drifting moisture anomalies or weak convection.
      
更多          
  weak convection
The results of an experimental check are presented for the visualization of weak convection air flows near a heated body.
      
Rainfall that occurs during days without low OLR (weak convection with warm cloud tops or isolated deep convection) contributes to 69% of the total rainfall during dry sequences and 45% during wet sequences.
      
Very weak convection of the reaction suspensions in microgravity is another important factor.
      
It is shown that a weak convection region forms near the ingot top in the liquid zone at a certain stage of solidification and then develops downward gradually, and the negative segregation is detected in the weak convection region.
      
A curious pulsing of the precipitation is seen, indicating either drifting moisture anomalies or weak convection.
      
更多          
  weak convection
The results of an experimental check are presented for the visualization of weak convection air flows near a heated body.
      
Rainfall that occurs during days without low OLR (weak convection with warm cloud tops or isolated deep convection) contributes to 69% of the total rainfall during dry sequences and 45% during wet sequences.
      
Very weak convection of the reaction suspensions in microgravity is another important factor.
      
It is shown that a weak convection region forms near the ingot top in the liquid zone at a certain stage of solidification and then develops downward gradually, and the negative segregation is detected in the weak convection region.
      
A curious pulsing of the precipitation is seen, indicating either drifting moisture anomalies or weak convection.
      
更多          


In this paper,Rossby wave-CISK near the equator is investigated according to the wind-pressure field balance relation. It is found that Rossby wave-CISK modes not only propagate in the west-east direction,but also in the north-south direction for the weak cumulus convective heating and the modes are a kind of decayed waves; For the strong convective heating,Rossby wave-CISK modes propagate slowly eastward and northward respectively , which characters are in a good agreement with the properties of 30-60 day Low...

In this paper,Rossby wave-CISK near the equator is investigated according to the wind-pressure field balance relation. It is found that Rossby wave-CISK modes not only propagate in the west-east direction,but also in the north-south direction for the weak cumulus convective heating and the modes are a kind of decayed waves; For the strong convective heating,Rossby wave-CISK modes propagate slowly eastward and northward respectively , which characters are in a good agreement with the properties of 30-60 day Low frequency oscillations. This shows that Rossby wove-CISK may be a possible mechanism for exciting 30-60 low frequency oscillations in the tropical atmosphere.

本文根据低纬热带大气中的风压场平衡关系对CISK-Rossby波进行了研究,指出对于弱对流加热,CISK-Rossby波既可以向东西方向传播,又可以向南北方向传播,并且这种弱对流加热所激发的CISK-Rossby波是一种稳定的减幅波;对于强对流加热,这种CISK-Rossby波减速并向东和向北传播,其传播特征与30~60天低频振荡的特征比较一致,并且这种CISK-Rossby波又是一种不稳定的增幅波,在10°N和17°N地区,经向波长为6000km的CISK-Rossby波的e倍增幅时间分别为6天和8天。因此,CISK-Rossby波可能是30~60天低频振荡的触发机制。

In this paper, solutions for travelling waves are derived with a partially nonlinear dynamic model with two dimensional internal gravity waves to 1) study forms, characteristics and velocity with which the cold surge propagates in the South China Sea during winter monsoon, and 2) discuss the contribution to the propagation by large scale meridional circulation and its vertical structure. thermodynamics, stability of stratification and initial disturbance. Important conclusions are that the cold surge propagates...

In this paper, solutions for travelling waves are derived with a partially nonlinear dynamic model with two dimensional internal gravity waves to 1) study forms, characteristics and velocity with which the cold surge propagates in the South China Sea during winter monsoon, and 2) discuss the contribution to the propagation by large scale meridional circulation and its vertical structure. thermodynamics, stability of stratification and initial disturbance. Important conclusions are that the cold surge propagates in the form of travelling gravity waves of no or weak dispersion with non-linear effect and much faster in the southward directin than the velocity of advection but almost as fast as that of internal gravity waves; condition of initial disturbance, subject to difference in flow fields and geopotential temperature, determines whether the cold surge travells in the form of preiodic or isolated internal gravity waves, which is reflecting two synoptic processes, and basic condition for the cold surge to travel in the form of propagating internal gravity is the strengthening and southward advancement of meridional circulation, stable atmospheric stratification, and weak convective condensation and heating.

利用一个部分非线性的二维经向重力内波动力模式,通过求行波解,对冬季风期间南海冷涌的传播形式,传播特征和传播速度进行了分析,并讨论了大尺度经向环流及其垂直结构、热力作用、层结稳定状况和初始扰动条件对冷涌传播的作用。主要结论是:冷涌的传播表现为具有非线性效应的无频散或弱频散的重力行波,其向南传播速度远大于平流速度而接近于重力内波波速;不同流场和位温的初始扰动状况决定了冷涌将以周期重力行波或者以孤立重力行波的方式传播,这两种不同的传播方式反映出两种不同的天气过程,经圈环流的加强和南移、稳定的大气层结以及弱的对流凝结加热是冷涌以重力行波方式传播的基本条件。

The structures, formation and maintenance of the Mei-Yu front over the torrential rain period of the middle June 1998 were diagnosed with analysis data. Some general structural characteristics of Mei-Yu fronts are confirmed, such as the strong contrast ofθ_ se rather than temperature, the positive velocity, the wind and moisture convergence over the lower troposphere within the Mei-Yu front zone, etc. Especially, it is revealed that during the torrential rain period, the Mei-Yu front may extend vertically to...

The structures, formation and maintenance of the Mei-Yu front over the torrential rain period of the middle June 1998 were diagnosed with analysis data. Some general structural characteristics of Mei-Yu fronts are confirmed, such as the strong contrast ofθ_ se rather than temperature, the positive velocity, the wind and moisture convergence over the lower troposphere within the Mei-Yu front zone, etc. Especially, it is revealed that during the torrential rain period, the Mei-Yu front may extend vertically to 600 hPa from the near surface, which is higher than the general thinking of 800 hPa, and the front nearly doesn't tilt with height; the stability conditions of the front zone turn into the moist neutral above 900 hPa from the weak convective unstable under 900 hPa; the baroclinicity is very weak within the Mei-Yu front zone. It is pointed out that the nature of the Mei-Yu front's structures has changed into the sub-tropical style, something between extratropical fronts and ITCZ during the torrential rain period . The diagnoses also show that horizontal air motions and geostrophic departures over the lower-troposphere have obvious positive contributions to the formation and maintenance of the Mei-Yu front in 1998.

应用 1 998年 6月中旬的分析资料 ,对 1 998年 6月 1 6~ 1 7日暴雨时段的梅雨锋结构及梅雨锋的形成与维持进行了诊断分析 ,确认了暴雨发生时期梅雨锋结构的一些普遍特征 ,如在对流层低层表现为θse锋而不是温度的强烈对比 ,梅雨锋区是一个低层正涡度带以及风和水汽的辐合带等。同时揭示了 1 998年 6月暴雨时期梅雨锋结构的典型特征 :锋区从近地面可伸展到 60 0hPa层 (一般认为梅雨锋只存在于 80 0hPa以下 ) ,近乎垂直、略向北倾 ;锋区90 0hPa以下是一个大气弱对流不稳定区 ,向上气层变为潮湿中性直至 40 0hPa ,等θse线基本上呈垂直分布 ;锋区斜压性相当弱等。研究表明 ,出现强降水时的梅雨锋结构已经变性或者说它是介于温带锋面结构和ITCZ结构之间的副热带锋系结构。分析还认为 ,在强盛的南海季风涌和频繁的西风带扰动组配的大尺度有利背景形势下 ,低层空气的水平运动和地转偏差风对 1 998梅雨锋的形成和维持有明显的正贡献。

 
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