渦旋中心 的英文怎麼說
中文拼音 [guōxuánzhōngxīn]
渦旋中心
英文
vortex center-
From the numerical modeling results, it can be found that there is a clockwise gyre in the middle part of bohai sea, whether in wintertime or in summertime. in summer, the clockwise gyre corresponding to the high - temperature and low - density center in the middle bohai sea is mainly dominated by the density circulation. and in winter, it is mainly dominated by the wind stress curl
通過數值模擬結果發現,在渤海中部,無論冬季還是夏季,都存在一個順時針的渦旋運動,夏季,對應于渤海中部的高溫低密中心,其流場主體部分呈順時渤海冬夏季環流特徵及變異的初步研究針向旋轉,這主要是密度環流占優的結果,而冬季的順時針向的旋轉,主要是海面風應力旋度影響的結果。Call them twisters or tonadoes, the nature ' s most violent storms with swirling winds that can top 3 hundred miles per hour
旋風或龍卷風是自然界最猛烈的風暴,其渦旋中心風速可超過三百英里每小時。The phenomena of initial disturbance vorticity translating into spiral bands is most evidently for it locating at the periphery of radius of maximum wind ( rmw ), near rmw next and the spiral bands vanish when it is positioned in the inner core region. indicating that the farther the distance from the tc center, the more distinctly the spiral bands and the opposite is true
初始圓形擾動渦度場轉化為螺旋臂渦量帶的現象是初始擾動位於渦旋最大風速半徑( rmw )外圍最顯著,其次是rmw附近,當擾動位於渦旋內核區時幾乎沒有螺旋臂結構形態出現,表明,初始擾動離tc中心越遠,其強迫渦旋rossby波形成的螺旋帶結構越明顯,反之越弱。The salinity distribution characteristics are the high - salinity in the bohai bay and the low - salinity in the boahi strait. the density distribution shows that there is a large cyclonic density circulation in bohai sea and it is likely to exist some density current gyre in the middle part of the bohai sea. in winter the saddle - like pattern of the bohai sea temperature and salinity shows that the circulation structure is much complexer than the previous research results
密度分佈表明:夏季渤海灣口已經由以前的低密度中心變為現在的高密度中心,相應的環流結構也必會發生大的變化;夏季渤海中部會存在一個反氣旋式的密度環流,並在局部可能存在多個密度流渦環;冬季渤海「馬鞍狀」溫鹽結構反映其密度環流結構要比以往研究結果復雜得多。Through analysis of potential vorticity in equity - entropy surface field, a relatively high potential vorticity center in cyclone top in low - troposphere have discovered, and make cyclone develop in a more deep cyclone circulation by this ; and an anticyclone circulation zone with more severe low potential vorticity in high - troposphere
通過對等熵面的位渦分析,發現了對流層中低層的位渦場,在氣旋上方有一個相對高位渦中心,由此使得氣旋在一個比較深厚的氣旋性環流中發展;而對流層高層則是一個伴有較強位渦低值的反氣旋環流區。Vortex field - vortex field gives more of a tornado effect, with particles spiralling around the vortex center
漩渦場-漩渦場提供更多的龍卷風效應,粒子螺旋運動在漩渦中心的周圍。A spiral motion of fluid within a limited area, especially a whirling mass of water or air that sucks everything near it toward its center
漩渦在一定地域內液體的螺旋狀運動,尤指把附近各種東西吸向其中心的螺旋水流或空氣In this paper, a bogused vortex with tilted vertical structure is firstly taken into account. check results of experiment b, experiment bt and experiment nb, we find that the simulated tc track, center pressure and pattern of precipitation during landing in experiment b are better than others. so, a bogused vortex with asymmetrical horizontal structure and tilted vertical structure is good for a tc moving in mid - latitude, which may be a new way to initialize this kind of tc in numerical simulation
本文首次採用傾斜垂直結構的人造熱帶氣旋作為初始渦旋,試驗b和試驗bt以及試驗nb的模擬結果對比發現,前者對9806號熱帶氣旋登陸前後的運動路徑、中心氣壓、降水分佈和初始結構的模擬能力優於後兩者,因此,具有傾斜垂直結構的人造熱帶氣旋比正壓結構的人造熱帶氣旋更適合於作為模擬中緯度運動的熱帶氣旋的初始渦旋,從而提出解決該類熱帶氣旋初始化問題的一種新思路。The analysis of dry pv shows that the high pv dominate the area of typhoon, the higher is the center value of pv, the stronger is the typhoon. lt is also shown that the most important reason resulting in rainstorm is the cold air ( high pv ) which spreads to south from the upper troposphere or lower stratosphere and transports into the warm air. the joining situation of upper and lower pv area make vortex develop. pv transpotation reduces static stability, which increases the releasing of instability energy and makes rainstorm amplify
對干位渦的分析表明:臺風或臺風環流區為高值位渦區,臺風越強,位渦中心值越大;對流層上部或平流層下部冷空氣(高位渦)的擴散南下與暖濕氣流的交匯是造成特大暴雨的重要原因,因為上游斜壓性的發展使對流層頂發生折疊,平流層與對流層相互作用增強,上下位渦區相接的形勢使低層渦旋發展,上升運動加強,位渦的下傳有效地降低了靜力穩定度,有利於位勢不穩定能量的釋放,使得暴雨增幅。By mesoanalysis of a precipitation that occurred in the middle reaches of the changjiang river, 8th jul. in 2003, the formation and development of the event, its relation with the meso - microscale system are studied, it is emphasized that the low - level jet would cause favorable thermodynamic, moisture and dynamic conditions for the heavy rainfall in the middle reaches of the changjiang river and that the mesoscale vortex formed in the left of the low - level jet would stimulate strong convective clouds and cause the heavy rain
摘要通過對2003年7月8日發生在長江中游的一場大暴雨進行中尺度分析,初步研究了暴雨的形成及發展過程,總結了暴雨的產生與中小尺度系統的關系,著重闡述了低空急流在暴雨形成中的作用,以及在低空急流左側強正渦度中心附近形成中尺度渦旋,激發暴雨雲團等。The mid - eddy centers on 12437 ' e, 37n, and the south eddy centers on 124e, 3530 ' n. the description of the two eddies above is according with the situation of the distribution of temperature and salinity
居中的渦旋中心在124 37 e , 37 n ,南部的渦旋中心在124 e , 35 30 n ,上述兩渦旋與以往溫鹽的分佈結果相符。Generally under 300hpa the subsidence zone of the potential vorticity lies above cyclone at the violent stage of the development of the cyclone, however, the center of cyclone still lies near the potential vorticity of large value above 300hpa
氣旋強烈發展期,一般300hpa以下,位渦的下沉區在氣旋的上空, 300hpa以上氣旋中心仍位於大值位渦後部。This paper discuss the effect of roughness coefficient on the tropical cyclone landfalling process using a idealized tc model developed from psu / ncar mm5 in the condition of quiescence and f - plane atmosphere. in order to understand the different influences of land and sea surfaces in the tc landfalling process, two kind of experiments had been designed : one for settled tc, the other for movable tc, and each kind consists four tests. the result indicates that the distribution of wind, precipitation, warm core and intensity of tropical cyclone has been changed obviously due to the effect of difference between the land and sea
本文利用bogus技術在psu / ncarmm5中加入了理想熱帶氣旋初始渦旋,在f -平面和無環境流場的理想情況下,設計了兩組靜態和動態試驗,通過控制試驗和不同粗糙度的登陸試驗,分別從空間和時間上探討了理想熱帶氣旋的登陸規律和分佈特徵,特別研究了邊界層中熱帶氣旋中心區域風場的垂直細致結構,並初步分析了其物理機制。The attacking midfielder was at the centre of a transfer battle between the two clubs in the summer, but the spanish giants have never given up on the idea of seeing the brazilian at the santiago bernabeu
在夏季的時候,這位前腰就被捲入了這筆轉會旋渦的中心,即使夏季受挫了,但是西班牙球隊從來沒有停止過爭取把他帶到柏納烏的努力。There are two evident cyclonic eddies whose centers lie at 34 n, 164 band 33 n, 176 e, and two evident anti - cyclonic eddies whose centers lie at 33 n, 175 e and 32 n, 162. 5 e. the result seems to suggest a causal relation between the formation, evolution and disappearance of the eddy and the kuroshio meander path
其中比較明顯的渦旋包括中心位置分別位於34on , 164oe和33 「 n , 176 「 e附近的兩個氣旋渦和中心位置在33on , 175oe和32on , 162 . 5oe的兩個反氣旋渦。本文認為渦旋的形成、發展與消亡與黑潮路徑的彎曲程度以及主軸流速的大小有著密切的因果關系。During the passage of tornadoes or waterspouts, the direct impact of very strong winds and the difference in pressure between the interior and outside of a building can shatter weak structures, and even blow away trees and vehicles
渦旋中心附近的氣壓非常低,並且風力強大。卷風經過時,單薄的建築物可能會抵受不住強大風力及室內室外的氣壓差而損毀,樹木及汽車等會被吹起。During the passage of tornadoes or waterspouts, the direct impact of very strong winds and the difference in pressure between the interior and outside of a building can shatter weak structures, and even blow away trees and vehicles. there have been reports of small boats capsizing in nearby waters on encountering waterspouts
渦旋中心附近的氣壓非常低,並且風力強大。龍卷風經過時,單薄的建築物可能會抵受不住強大風力及室內室外的氣壓差而損毀,樹木及汽車等會被吹起。在海上曾經有小型船隻遇到水龍卷而沉沒。In the metaphase of precipitation, the high - layer inertia - gravity wave presented indirect circulation posture circling the center of low - layer vortex. at this time precipitation became stronger and moved towards the east
在降水的中期,高層的重力慣性波出現圍繞低層渦旋中心逆時針旋轉的形勢,此時降水開始加大並東移。The main conclusions show as following : 1 the effects of propagating vortex rossby waves on tc intensity change are relative closely to the position, the size and intensity of the initial disturbance
主要結果可歸納如下: 1渦旋rossby波傳播對熱帶氣旋強度變化的影響,與初始擾動相對渦旋中心的位置、初始擾動尺度大小及強度等關系密切。The action that weak cold air penetrated into the tropical cyclone made the low pressure become vortex potential instability, and finally turned into kinetic energy. the results were that the center pressure of low became lower, the wind velocity around the cyclone was stronger and the precipitation became more
冷空氣在中低層的滲透主要使大氣斜壓作用加強,使不穩定能量的積聚並最終釋放;還造成臺風渦旋位勢不穩定,使熱帶氣旋中心氣壓降低,周圍風力加大,因而產生更大的降水。分享友人