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extratropical transition
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  “extratropical transition”译为未确定词的双语例句
     MOISTURE POTENTIAL VORTICITY ANALYSIS ON THE EXTRATROPICAL TRANSITION PROCESSES OF WINNIE(1997) AND BILIS(2000)
     Winnie(1997)和Bilis(2000)变性过程的湿位涡分析
短句来源
     THE TRANSFIGURATION FRONTOGENESIS ANALYSES ON 0108 LANDFALL TYPHOON EXTRATROPICAL TRANSITION AND HEAVY RAIN STRUCTURE
     变形场锋生对0108登陆台风温带变性和暴雨形成作用的诊断分析
短句来源
     Winnie(9711) and Matsa(0509) are the extratropical transition(ET) typhoons which move northward after their landfalling and affect Liaodong Peninsula. Matsa directly lands Liaodong Peninsula and Winnie indirectly lands Liaodong Peninsula passing through Bohai Sea, the precipitation of Matsa is only a half of Winnie’s.
     9711(Winnie)和0509(Matsa)是两个登陆北上影响辽东半岛的变性台风,Matsa直接登陆辽东半岛,但降水量仅为穿过渤海间接影响辽东半岛的Winnie的一半。
     Typhoon Winnie(9711) and Bilis(0010) underwent extratropical transition (ET) over Chinese mainland but only Winnie re-intensified as an extratropical system.
     9711号台风Winnie和0010号台风Bilis均在中国大陆发生变性,但前者变性后再度加强,而后者变性后减弱消亡。
短句来源
     Diagnostic Analysis of the Extratropical Transition Process of the Landfall Typhoon Matsa(0509)
     台风“麦莎”(0509)登陆北上变性加强过程的诊断分析
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  相似匹配句对
     THE EXTRATROPICAL TRANSITION ANALYSES ON TWO LANDFALL TYPHOONS
     登陆台风变性发展与消亡的对比分析
短句来源
     Kinetic Energy Buget of Typhoon During Extratropical Transition
     台风变性再度发展的动能收支分析
短句来源
     On Learning Transition
     学习迁移的分析
短句来源
     and transition phase.
     转变 ,并析出过渡相。
短句来源
     ON EXTRATROPICAL STORM SURGES
     关于温带风暴潮
短句来源
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  extratropical transition
The SV associated with Jeanne at later stage shows that Jeanne influenced the third hurricane Karl through the trough system as Karl went through extratropical transition and became part of the trough.
      
The Kain-Fritsch scheme more accurately reproduced the track of Irene and, hence, its interaction with upper-level features that caused extratropical transition and post-transition intensification.
      
In the case of hurricane Irene (1999), the choice of parameterization markedly impacted the modeled track and structure of the hurricane and its subsequent extratropical transition.
      
What is missing is adequate in situ observations to resolve a critical question as to the relative contributions to extratropical transition.
      
This EPS approach will lead to a better understanding of the predictability of extratropical transition.
      
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Both of typhoon Winnie(1997) and Tim(1994) sustained over land for a long period (2-3 days) and caused severe rainfall after they made landfall. The former developed distinctly with its extratropical transition(ET)process while the latter dissipated gradually after it entered into the mid-latitude region. Scale discretion of T BB 1-degree grid data and NCEP reanalysis 2.5-degree grid data analysis was performed with filtering scheme. Then the sub-synoptic scale features of Winnie and Tim were...

Both of typhoon Winnie(1997) and Tim(1994) sustained over land for a long period (2-3 days) and caused severe rainfall after they made landfall. The former developed distinctly with its extratropical transition(ET)process while the latter dissipated gradually after it entered into the mid-latitude region. Scale discretion of T BB 1-degree grid data and NCEP reanalysis 2.5-degree grid data analysis was performed with filtering scheme. Then the sub-synoptic scale features of Winnie and Tim were compared based on movable coordinate. Besides, the conversion of kinetic energy and vorticity between tropical cyclone (TC) and sub-synoptic scale systems (SSS) were calculated on TC area mean basis. Results showed that the intensity change of TC over land was closely related to the SSS in TC circulation. T BB disturbances displayed a clear spiral structure of cloud bands in TC circulation which was favorable to sustain TC intensity. After landfall, Winnie's spiral structure was asymmetric at beginning but returned to symmetric structure when it was re-intensified. Tim's cloud bands were broken after landfall, and its spiral structure of the cloud bands loosed gradually. The sub-synoptic scale stream fields exhibited a kind of wave structure (WS) in TC circulation. It was found that the interaction between TC and westerly trough could stir strong disturbances on the periphery of TC. For Winnie, the disturbances located northwest quadrant and led to strong mesoscale wave trains through TC that strengthened its WS. As to Tim, the strong wave trains located its east area that destroyed its WS. The results of the kinetic energy and vorticity conversion between TC and SSS demonstrated that SSS provided kinetic energy for the re-intensification of Winnie but consumed kinetic energy from Tim. Besides,Winnie obtained positive vorticity from SSS more than Tim did.

971 1 (Winnie)和 94 0 6 (Tim)是 2个在中国登陆后长久维持 (2~ 3d)并产生严重降水的热带气旋。在深入内陆过程中 ,Winnie变性并再次加强为一个温带气旋 ,Tim则衰减消亡。采用移动坐标以及云顶亮温 (TBB)和常规资料 ,对它们在陆上维持期间的次天气尺度环流特征及其与次天气尺度系统之间的相互作用进行对比分析和诊断。结果表明 :(1 )Winnie和Tim登陆过程中具有螺旋波状的次天气尺度云系 ,这种螺旋波结构有利于热带气旋的维持。陆上维持后期 ,Winnie的螺旋云系继续维持并有所加强 ,Tim的螺旋云系趋于零散、消亡。Winnie的螺旋波特征比Tim明显 ,因而维持更长时间 ;(2 )热带气旋次天气尺度环流也具有环绕热带气旋中心的明显波动特征 ,此波动结构能否维持与热带气旋活动的天气尺度背景密切相关。在与西风槽相互作用过程中 ,Winnie的次天气尺度波动结构维持 ,而Tim的次天气尺度波动结构遭到破坏 ;(3)作为登陆后长久维持热带气旋 ,Winnie和Tim均从次天气环流中获得正涡度 ,有助于维持其气旋性环流 ,但Winnie获得的正涡度比Tim明显的大。此外 ,Wi...

971 1 (Winnie)和 94 0 6 (Tim)是 2个在中国登陆后长久维持 (2~ 3d)并产生严重降水的热带气旋。在深入内陆过程中 ,Winnie变性并再次加强为一个温带气旋 ,Tim则衰减消亡。采用移动坐标以及云顶亮温 (TBB)和常规资料 ,对它们在陆上维持期间的次天气尺度环流特征及其与次天气尺度系统之间的相互作用进行对比分析和诊断。结果表明 :(1 )Winnie和Tim登陆过程中具有螺旋波状的次天气尺度云系 ,这种螺旋波结构有利于热带气旋的维持。陆上维持后期 ,Winnie的螺旋云系继续维持并有所加强 ,Tim的螺旋云系趋于零散、消亡。Winnie的螺旋波特征比Tim明显 ,因而维持更长时间 ;(2 )热带气旋次天气尺度环流也具有环绕热带气旋中心的明显波动特征 ,此波动结构能否维持与热带气旋活动的天气尺度背景密切相关。在与西风槽相互作用过程中 ,Winnie的次天气尺度波动结构维持 ,而Tim的次天气尺度波动结构遭到破坏 ;(3)作为登陆后长久维持热带气旋 ,Winnie和Tim均从次天气环流中获得正涡度 ,有助于维持其气旋性环流 ,但Winnie获得的正涡度比Tim明显的大。此外 ,Winnie从次天气尺度环流中获得动能补充 ,Tim则只有次天气尺度环流对其动能的耗散。因此 ,陆上维持后期Winnie再度发展而Tim逐渐消亡

Most prominent structure change of a tropical cyclone in its life span would appear in the period of its landfall process. Topographic forcing plays an important role for the tropical cyclone structure change when it's making landfall. Apart from the topographic forcing, structure change of a landfalling tropical cyclone also can arise from the interaction between the cyclone itself and some peripheral mesoscale vortices or a mid-latitude westerly trough. The structure change of a tropical cyclone often give...

Most prominent structure change of a tropical cyclone in its life span would appear in the period of its landfall process. Topographic forcing plays an important role for the tropical cyclone structure change when it's making landfall. Apart from the topographic forcing, structure change of a landfalling tropical cyclone also can arise from the interaction between the cyclone itself and some peripheral mesoscale vortices or a mid-latitude westerly trough. The structure change of a tropical cyclone often give rise to its intensity change, track turning and rainfall enhancement etc. On the other hand, the occurrence of most severe damages is due to those high impact weather such as high winds, heavy rainfall and strong storm surges associated with the landfalling tropical cyclones. Research community around the world attach more importance to the area of tropical cyclone landfall process in last ten years. Several scientific field experiments related to those tropical cyclones in the coastal water or over land are being implemented in the different region of the world. The title and its acronyms are as follows: TOST (THORPEX Observational System Test) in the eastern coast of US, CBLAST (Coupled Boundary Layer Air-Sea Transfer)-US, ATCCIP (Australia Tropical Cyclone Coastal Impacts Program), DOTSTAR (Dropsonde Observation for Typhoon Surveillance near the Taiwan Region), CLATEX (China Landfallling Typhoon Experiment). One of the common scientific objectives of those field experiments is to improve the tropical cyclone forecasting accuracy. Research programs are being carried out on the tropical cyclone landfall process. Some observational studies indicated that some tornadoes spawned in the right front quadrant of the typhoon after its landfall. Others find some mesovortices generated in the rainband of a tropical cyclone. Those structure changes would affect the behavior of the tropical cyclone including its high winds and rainfall intensity and distribution. Numerical simulation indicates that the moisture transportation is a favorable condition for the intensification of a tropical cyclone in the region of coastal water. Moisture transportation and latent heat transfer from the inland water surface or saturated wet ground are also favorable to landfalling tropical cyclone sustaining over land. Upper level strong divergence field or out-flow channel and small vertical shear or merger with some peripheral meso vortices (MSV) would be helpful to tropical cyclone intensifying in the off shore water or sustaining over land. Those processes provide latent heat energy to tropical cyclone which are also helpful to increase heavy rainfall of a landfalling typhoon. On the other hand, strong cold wave and oceanic stratification would be helpful to fill up or decay the typhoon. Extratropical transition process is another channel for storm to gain the new energy-baroclinic potential energy from the mid-latitude which is the result of the interaction between the tropical cyclone and the mid-latitude systems. ET process will convert the baroclinic potential energy into the kinetic energy to strengthen the circulation of the remnant low of the landfalling typhoon.

随着大气探测技术的发展 ,登陆热带气旋研究已经成为热带气旋研究中一个新的领域。新的探测技术能初步揭示出热带气旋登陆过程中发生的多种改变。近年来 ,国内外科学家实施了一系列外场科学试验 (Fieldscientificexperi ments) ,对登陆热带气旋进行探测和研究 ,旨在提高预报的准确率。登陆热带气旋研究内容包括 :海岸和内陆山脉地形影响 ,结构和强度变化 ,登陆热带气旋的暴雨强度和分布 ,大风强度和分布 ,风暴潮强度和范围 ,登陆热带气旋在陆上的维持机制 ,陆地涡旋的路径和入海加强 ,边界层结构 ,陆面过程和能量交换 ,变性过程等。研究采用外场科学试验与数值模拟相结合的方法。模拟或预报模式中使用同化资料尤其是卫星同化资料来构造初值场 ,取得较好结果。登陆热带气旋的研究目前正在展开 ,并取得了一些重要结果。研究表明 ,潜热释放和斜压位能释放是近海或登陆热带气旋加强或维持的两种主要能源。这两种能量可分别从水汽输送和热带气旋与中纬度环流的相互作用中获得。另外 ,陆面饱和湿地或水面的潜热输送、热带气旋与中尺度涡旋或热带云团的合并以及高空流出气流强辐散也对其加强和维持有利。世界气象组织的热带气象研究计划 (...

随着大气探测技术的发展 ,登陆热带气旋研究已经成为热带气旋研究中一个新的领域。新的探测技术能初步揭示出热带气旋登陆过程中发生的多种改变。近年来 ,国内外科学家实施了一系列外场科学试验 (Fieldscientificexperi ments) ,对登陆热带气旋进行探测和研究 ,旨在提高预报的准确率。登陆热带气旋研究内容包括 :海岸和内陆山脉地形影响 ,结构和强度变化 ,登陆热带气旋的暴雨强度和分布 ,大风强度和分布 ,风暴潮强度和范围 ,登陆热带气旋在陆上的维持机制 ,陆地涡旋的路径和入海加强 ,边界层结构 ,陆面过程和能量交换 ,变性过程等。研究采用外场科学试验与数值模拟相结合的方法。模拟或预报模式中使用同化资料尤其是卫星同化资料来构造初值场 ,取得较好结果。登陆热带气旋的研究目前正在展开 ,并取得了一些重要结果。研究表明 ,潜热释放和斜压位能释放是近海或登陆热带气旋加强或维持的两种主要能源。这两种能量可分别从水汽输送和热带气旋与中纬度环流的相互作用中获得。另外 ,陆面饱和湿地或水面的潜热输送、热带气旋与中尺度涡旋或热带云团的合并以及高空流出气流强辐散也对其加强和维持有利。世界气象组织的热带气象研究计划 (TMRP)正在组织对这一领域的总结和下一步的研究计划。这项研究将对预报和

Typhoon Winnie(9711) and Bilis(0010) underwent extratropical transition (ET) over Chinese mainland but only Winnie re-intensified as an extratropical system. Their ET processes were examined and compared in terms of the Moisture Potential Vorticity u ( m P ) perspective. Results show that Winnie enters mid-latitude zone and couples with an upper trough during its ET. Bilis also approaches an upper trough but decouples with it. ET re-intensification is related to the interactions between typhoon remnant...

Typhoon Winnie(9711) and Bilis(0010) underwent extratropical transition (ET) over Chinese mainland but only Winnie re-intensified as an extratropical system. Their ET processes were examined and compared in terms of the Moisture Potential Vorticity u ( m P ) perspective. Results show that Winnie enters mid-latitude zone and couples with an upper trough during its ET. Bilis also approaches an upper trough but decouples with it. ET re-intensification is related to the interactions between typhoon remnant circulation and lower layer front zone and m P anomaly downward transported from the upper troposphere. Especially, slantwise vorticity development caused by the increase of moist baroclinicity is an main factor responsible for Winnie re-intensification. However, there is no frontal zone occurring in Bilis’s remnant circulation and downward transportation of the upper m P anomaly is weak.

9711号台风Winnie和0010号台风Bilis均在中国大陆发生变性,但前者变性后再度加强,而后者变性后减弱消亡。从湿位涡理论出发,对比分析两者的变性过程,结果表明:作为变性台风,Winnie和Bilis均在北上过程中与中纬度西风槽发生作用,但前者与高空槽发生耦合,后者仅接近高空槽底部,没有发生耦合;Winnie变性加强过程表现为一个温带气旋在低层锋区上的强烈发展过程,主要与高层正位涡扰动下传、低层锋区及热带气旋低压环流之间的相互作用有关。mP湿斜压项增长引起的倾斜涡度发展是登陆热带气旋变性加强的主要因子。在Bilis变性过程中,高层无明显的正位涡扰动下传,热带气旋低压环流内无锋区面出现,大气斜压性弱且变化不明显。

 
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