upper-air front 中文意思是什麼
upper-air front
解釋
高空鋒-
The squall line is a kind of instable and strong convective weather caused by the air with upper - layer dry and lower - layer wet in front of the upper - troposphere trough
分析指出，該颮線系統是由高空槽前型的上干下濕引起的不穩定強對流天氣。 -
A durative heavy rainfall process occurred on the middle and lower reaches of yangtze river in lat junl999. lt was just during the period of the operation of hubex experiment which provided a great deal of intensive rainfall data and upper - air sounding data. so it is a good chance for us to do research on the mei - yu front and low
1999年6月下旬在長江中下游出現了梅雨期的持續性暴雨，並且正值hubex試驗期間，獲得了很多加密觀測降水及探空資料，為我們提供了良好的研究梅雨鋒和低渦的機會。 -
She said, lifting her finger ; and then she wrote in the air a memento, which ran in lurid hieroglyphics all along the house - front, between the upper and lower row of windows, " like it if you can
她豎起她的手指說，隨后在空中寫了一條警語，那文字奇形怪狀，十分可怖，覆蓋了上下兩排窗戶之間的正壁：只要能夠，你就喜歡它！ -
A transverse secondary circulation is produced by the coupling of high and low jets, while the sinking branch of the secondary circulation providing the dynamic conditions for the dry intrusion air. during the period of the heavy rain process, dry intrusion descends southward along the intense constant potential temperature lines, which promotes the lower cyclone. in addition, the pouring of upper - level dry air not only decreases ground temperature behind the front but also increases surface pressure and velocity
由於高、低空急流耦合，在高空急流中心左側產生的下沉運動和高空急流中心右側、低空急流左側產生的上升運動在鋒面上形成一次級環流，次級環流的下沉支運動為對流層高層干空氣和高位渦的下傳提供了動力條件；進一步研究發現，干侵入沿相當位溫密集帶向南向下伸展，引起對流層低層氣旋性渦度的發展；此外，高層乾冷空氣向下注入，導致地面溫度降低、氣壓升高、風速加大、低層輻合增強、上升速度加大，從而促進了新的對流運動，引起降水增強。 -
It was a typical mei - yu front on the middle and upper level of the troposphere which became wider with the height increased. the temperature field of mei - yu front area looked like " sandwich " with the warmer air along the each side of the colder air of mei - yu area
在水平方向，梅雨鋒區的溫度場在對流層中低層呈現「暖-冷-暖」的「三明治」結構，即梅雨鋒區溫度最低，而在其兩側溫度最高。
分享友人