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pentad n.1.五;五個一組。2.五年,五天。3.【化學】五價元...

pentadactyl

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,這一增強有利于加速孟加拉灣地區西風的向東擴展,并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。

Climatological characteristics , which can provide some drought or flood years with large - scale background , are investigated for large - scale water vapor transport over asian - australian monsoon region based on vertically integrated water vapor flux by pentad from 1980 to 1997 . at the same time , the differences of moisture transport over the yangtze river basin between drought and flood and the moisture budgets over eastern china from april to september are examined . major results are as follows : i 使用1980 ? 1997年垂直積分的整層水汽輸送通量資料,從氣候平均的角度分析了亞澳季風區大尺度水汽輸送演變和偏南風水汽輸送在東亞地區推進的氣候特征,為研究異常年份旱澇事件的產生提供了相應的大尺度背景;同時還討論了長江流域旱澇年水汽輸送的差異以及4 - 9月我國東部各區域的水分收支情況。