low-level jet造句
例句與造句
- A low - level jet is a narrow band of strong winds in the lower atmosphere
低空急流是在大氣低層出現(xiàn)的狹窄強風(fēng)帶。 - A low - level jet is a narrow band of strong winds in the lower atmosphere
低空急流是在大氣低層出現(xiàn)的狹窄強風(fēng)帶。 - Scientists tried to seek explanations from the dv of low - level jet as a member of the meiyu precipitating system
過去曾從低空急流日變化等一些梅雨系統(tǒng)的內(nèi)部聯(lián)系尋求解釋。 - The low - level jet stream has three vibration processes , which corresponded to the three lows " beginning and developing
低空急流有三次脈動過程，與三個低渦的產(chǎn)生和發(fā)展對應(yīng)。 - The low - level jet stream is the result of the spread of the momentum from the upper - level jet stream
低空急流是高空急流的動量向下輸送的結(jié)果。低空急流的生成先于水汽及降水的爆發(fā)。 - It's difficult to find low-level jet in a sentence. 用low-level jet造句挺難的
- The positive storm - relative helicity center is accompany with low - level jet in 850 - hpa isobaric surface fields
通過分析我們發(fā)現(xiàn)了正的相對螺旋度中心與850hpa低空急流的演變過程是一致的。 - Severe convergence brought by low - level jet pulsation , and severe divergence brought by upper - level jet is directly trigger mechanism of this intense rainstorm
低層低空急流脈動產(chǎn)生的強輻合，高空急流誘發(fā)的高層強輻散是本次東北地區(qū)暴雨天氣的直接觸發(fā)機制。 - The results show that the event is directly affected by the formation and evolution of southwest vortex and mcc cloud cluster which locate in the intersection region of the upper - level jet and the low - level jet
結(jié)果表明：高、低空急流耦合區(qū)中西南低渦及mcc特徵云團的形成和維持是造成此次特大暴雨的直接影響系統(tǒng)。 - At the same time , the disturbance of the low - level jet might be the triggering condition for heavy rain . but the surface occluded front crossing qinling mountains and strengthening , maybe the direct reason
同時，由于冷空氣是從中層侵入西北地區(qū)東部，這樣就形成了較強的對流不穩(wěn)定層結(jié)，有利于對流降水的發(fā)生。 - The result indicates that , in the course of the rainstorm in huoshan , there are obvious low - level jet of great intensity , infection of mesoscale shear line , enhancement of plus vorticity which increases intensity of convergence , improves ascending velocity and brings on precipitation , and quick enhancement of helicity which provides the basis to forecast , in addition , convergence of moisture flux and analyzed potential vorticity which reflects baroclinic convective instability sufficiently indicate the characteristics of the rainstorm
結(jié)果表明：此次霍山暴雨發(fā)生前后，存在明顯的大強度低空急流，并受到中尺度切變線的影響，而且正渦度的加強引起了輻合加劇，提高了上升速度從而引起降水，同時暴雨發(fā)生前螺旋度的迅速增強，也為預(yù)報提供了根據(jù)，另外水汽通量的輻合以及分析位渦反映出的斜壓對流不穩(wěn)定都充分體現(xiàn)了這次降水的特點。 - 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(fā)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(fā)展過程，總結(jié)了暴雨的產(chǎn)生與中小尺度系統(tǒng)的關(guān)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(cè)強正渦度中心附近形成中尺度渦旋，激發(fā)暴雨云團等。 - The analysis of the large - scale synoptic situation shows that strong precipitation is closely related to the explosion of monsoon and the intensification of cross - equatorial flow which bring a lot of vapor and meet with cold masses at the eastern of northwest district on 8th , june causing extremely heavy rainfall ; that subtropical high - level jet at 200hpa , subtropical high at 500hpa and low - level jet at 850hpa are the weather backgrounds favorable to strong precipitation ; that the pattern of eastern highs and western lows and the establishment of a low - level jet and the coupling between upper - and low - level patterns that determine that the rain occurred in the east of the northwest china ( on average , this is the rainy season for the south of china , but not for the northwest china ) ; that water vapor comes from southerly and easterly flow which converge at the eastern of northwest district with convergence mainly in lower levels and pbl ; that the high value of the whole - level apparent heat source < q1 > is near the area of large rainfall in the direction of northeasterly - southwesterly agreeable to shear line very well and the condensation latent heat releasing is main heat source with vertical advection item playing key role in q1 and q2 ; that there is a vertical secondary circulation crossing low - lever jet whose ascending branch is at the area of large rainfall ; that the construction of convection instability and conditional symmetry instability results that there is not only deep thermal instability , but also moisture influx and triggering mechanism of thermal instability causing strong torrential rain
作為對比，本文還對2002年6月24 - 25日發(fā)生在北京地區(qū)的強地形雨進行了分析，并討論陜南、北京地區(qū)兩地暴雨的異同點以及地形作用的共性和個性，為兩地暴雨預(yù)報提供有益的參考，得出了一些很有意義的結(jié)果： 1大尺度環(huán)流背景分析表明： ( 1 ) “ 02 . 6 ”強降水與6月上旬越赤道氣流和季風(fēng)爆發(fā)密切相關(guān)，攜帶大量水汽的偏南氣流與冷空氣于6月8日交匯在西北地區(qū)東部，導(dǎo)致了這次強降水的發(fā)生； ( 2 ) 200hpa的副熱帶西風(fēng)急流、 500hpa副高以及850hpa的低空急流的配置非常有利于本文分析之陜西強降水的發(fā)展與維持。大尺度形勢分析表明，東高西低形勢場、低空急流的建立和高低空形勢的配置決定了這場降雨出現(xiàn)在西北地區(qū)東部。與暴雨區(qū)相聯(lián)系，存在一支橫越低空急流的經(jīng)向垂直環(huán)流，暴雨區(qū)處于該垂直環(huán)流的上升支； ( 3 )偏南和偏東氣流水汽通道在西北地區(qū)東部交匯，水汽的輻合積聚主要在對流層低層和行星邊界層內(nèi)完成； ( 4 )整層的視熱源< q _ 1 >高值區(qū)在暴雨區(qū)附近呈東北-西南向分布，與切變線走向非常一致，降水產(chǎn)生的凝結(jié)潛熱釋放是強降水區(qū)大氣的主要熱源。 - With the research of the evolvement features of barotropic and baroclinic atmosphere flow fields , the mechanism has been studied of the formation , development and die out of the heavy rainfall which occurred in wu - han during the period of 21 - 22 , july 1998 . the results are shown as follows : the evolvement of the rainstorm has a close relation to the barotropic component of the real atmospheric flow filed . and the barotropic component is , to a certain degree , also responsible for the coupling characteristics of high - and low - level jets
本文從研究大氣正、斜壓流場的演變特征入手研究了1998年7月武漢的一次強暴雨發(fā)生、發(fā)展、消亡全過程的機理，研究結(jié)果表明： ( 1 )未經(jīng)過尺度分離的實際大氣流場正壓分量的演變與此次暴雨的醞踉、發(fā)展和消亡相對應(yīng)，并且正壓分量在一定程度上反映高、低空急流耦合特征。
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