On the day of our arrival , a cold front crossed the region of yantai . the weather was gloomy with rain . strong northerlies started blowing in the evening 抵步當(dāng)日,剛巧有一道冷鋒橫過煙臺(tái)地區(qū),在冷鋒下,天色變得陰暗及有雨,傍晚更開始刮起強(qiáng)烈的北風(fēng)。
On the day of our arrival , a cold front crossed the region of yantai . the weather was gloomy with rain . strong northerlies started blowing in the evening 抵步當(dāng)日,剛巧有一道冷鋒橫過煙臺(tái)地區(qū),在冷鋒下,天色變得陰暗及有雨,傍晚更開始刮起強(qiáng)烈的北風(fēng)。
A cold front crossed the south china coast early on 8 march 1999 . a ridge of high pressure extended from east china to the south china coastal areas behind the front figure 11 一九九九年三月八日早上,一道冷鋒橫過華南沿岸,冷鋒過后華東的高壓脊伸展至華南沿岸地區(qū)圖11 。
A cold front crossed the south china coast early on 8 march 1999 . a ridge of high pressure extended from east china to the south china coastal areas behind the front ( figure 11 ) 一九九九年三月八日早上,一道冷鋒橫過華南沿岸,冷鋒過后華東的高壓脊伸展至華南沿岸地區(qū)(圖11 ) 。
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(shí),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(qiáng)的對(duì)流不穩(wěn)定層結(jié),有利于對(duì)流降水的發(fā)生。