westerly jet 中文意思是什麼
westerly jet
解釋
西風噴流-
The somali jet and the south china sea ( scs ) cef in the lower level play an important role in the onset of the south china sea summer monsoon ( scssm ). the somali jet is rapidly enhanced two pentads prior to the onset of scssm, thus accelerating the eastward extension of the westerly over the bay of bengal and leading to the eastward retreat of the western pacific subtropical high ( wpsh )
低層的索馬里和南海越赤道氣流對南海夏季風的爆發有至關重要的作用，在南海夏季風爆發前2候，索馬里急流有一次迅速的增強，這一增強有利於加速孟加拉灣地區西風的向東擴展，並使控制在南海的西太平洋副高東撤；同時，南海越赤道氣流的迅速增強也加速副高的北上，共同促使南海夏季風全面爆發。 -
( 2 ) sxsp anomaly is closely related to the abnormity of 500hpa geopotential height field over the east of ural and yakutsk area, western ridge point and area of subtropical high, the cold air abnormity from north of china and the position of upper level westerly jet over east asia
（ 2 ）三峽庫區夏季降水異常與大氣環流異常密切相關：與500hpa烏拉爾山以東高度場異常、雅庫茨克以東高度場異常、副熱帶高壓面積及西伸脊點、北方冷空氣異常、 200hpa東亞高空西風急流位置異常偏南（偏北）密切相關。 -
In addition, in the austral winter, the westerly jet splits into two branches over the south pacific from 600 to 100hpa, with the subtropical branch located at 27. 5 s and the polar counterpart at 60 s. the maximal speed of the former is at 200hpa while the speed of the latter increases with height
其次，在南半球冬季， 600 ? 100hpa的南太平洋上空西風急流會出現分裂，其中副熱帶急流中心位於27 . 5 s ，高緯度急流中心位於60 s ，前者在200hpa層風速達到極大值，後者風速隨高度增加而增加。 -
Jet stream is an elongated belt of high speed air, typically found in upper tropospheric westerly flow round the globe. a jet stream may stretch over tens of thousands of kilometres in length from west to east and a few hundred kilometres in width from north to south
高空急流是圍繞地球的一條強而窄的高速氣流帶，集中在對流層上部或平流層中，在中高緯西風帶內或在低緯度地區都可出現。 -
The main relative systems of heavy - hard rainfall in northeast plateau are western pacific subtropical high, south asia high, low latitude systems, upper level jet ( ulj ), low level greater wind speed axes, westerly trough and plateau trough, low level vortex, cold frontal, occluded front in qinghai lake, mesoscale low pressure, heat low - pressure in qinghai, shear line and convergence line, mesoscale cloud cluster, etc. the west subsidiary model of south asia high is the main circulation type of heavy - hard rainfall in this area
3 、西太平洋副高、南亞高壓、低緯系統、高空急流、低空大風速軸；西風槽和高原槽、低渦、冷鋒、青海湖錮囚鋒以及中尺度低壓、青海熱低壓、切變線與輻合線、中尺度雲團等系統是高原東北部地區大到暴雨的主要相關系統。 100hpa上的南亞高壓中心強度加強，位置東西擺動預示高原地區將有降水產生，中心強度減弱，降水過程結束。南亞高壓西部副型是高原東北部地區大到暴雨的主要流型。 -
The results show that there are two centers of occurrence of llsw respectively in dong bei and jiang nan ; the regional torrential rain over the yangtze river basin is closely associated with llsw during the major periods of heavy rainfall ; the diurnal variation of the number of occurrence in the middle and low reaches of the yangtze river is the strongest in china there are some significant differences between llj and nallsw in positive season, spatial variation, diurnal variation and field of pressure. by the way, the important effect of inertial stability on heavy rainfall with both low level south - westerly jet and high level northerly strong flow is analyzed theoretically. the results show that the existence of the maximum of inertial stability in the left font of the low level jet is favor of the accumulation of the moist thermal energy, and conditional symmetric instability or convective instability can be expected in this region
另外，慣性穩定性的作用以往不受重視，本文通過對西南低空急流左前方和高空偏北大風軸右後方的慣性穩定性和對稱穩定性的理論分析和實例計算，表明慣性穩定性在伴有高低空急流的暴雨中有重要意義，揭示了梅雨暴雨的一種新的高低空急流耦合機制：低空急流左前方慣性穩定度大值區的存在，有利於低層濕熱能量的積累，使低層傾斜對流的不穩定發展更多期望于條件性對稱不穩定或對流不穩定；高空偏北大風軸（西風急流）的存在，是其右後方（右側）出現對稱不穩定的有利條件，高空相對容易出現干對稱不穩定；慣性穩定性的作用，使低層的傾斜對流更偏向於垂直方向，有利於對流發展，使高層的傾斜對流更偏向於水平方向，有利於高層輻散。 -
The analysis for the evolution of the upper westerly field, north - south wind field show that the upper jet stream is a good indication to sandstorm - occurring areas, the strong sandstorm appears at the right side of the entry domain of the jet stream and the ascension domain of secondary circulation
對高空東西風場、南北風場的演變進行分析，發現高空急流對沙塵暴發生區有很好的指示作用，強沙塵暴位於200hpa高空急流入口區右側、 500hpa正渦度中心下風方和次級反環流的上升區域內。 -
For this reason, the aao index ( aaoi ) is defined as the normalized zonal mean slp difference between 30 s and 65 s. the result indicates that when aao is stronger in boreal summer, both the antarctic vortex ( av ) and the polar westerly jet ( pwj ) are stronger while the subtropical westerly jet ( stwj ) is weaker, and vice versa
研究發現，當夏季南極濤動偏強時，南極極渦和高緯度的西風急流強度都偏強，但中低緯度西風急流的強度偏弱;反之，當南極濤動偏弱時，南極極渦和高緯度西風急流強度將偏弱，中低緯度西風急流強度將偏強。
分享友人