水动力学研究与进展A辑
水動力學研究與進展A輯
수동역학연구여진전A집
JOURNAL OF HYDRODYNAMICS
2009年
4期
472-479
,共8页
海岸带微气候%斜坡地形%MM5%动力效应%热力效应
海岸帶微氣候%斜坡地形%MM5%動力效應%熱力效應
해안대미기후%사파지형%MM5%동력효응%열력효응
coastal climate%inclined surface%MM5%dynamic effect%thermal effect
该文应用美国NCAR三维非静力平衡中尺度模式MM5研究了近岸斜坡地形对海岸带微气候特征的影响,得到了不同位置、不同坡度的斜坡地形条件下海岸带微气候要素的日变化过程,并与无地形条件下的情况进行了对比.计算结果表明,在陆地下垫面升温的初始阶段,斜坡地形的热力效应起主导作用;在海陆风发展过程的大部分时间里,斜坡地形的动力效应起主导作用.此外,近岸斜坡地形与岸线的距离以及地形坡度等也会对海岸带微气候要素产生影响.
該文應用美國NCAR三維非靜力平衡中呎度模式MM5研究瞭近岸斜坡地形對海岸帶微氣候特徵的影響,得到瞭不同位置、不同坡度的斜坡地形條件下海岸帶微氣候要素的日變化過程,併與無地形條件下的情況進行瞭對比.計算結果錶明,在陸地下墊麵升溫的初始階段,斜坡地形的熱力效應起主導作用;在海陸風髮展過程的大部分時間裏,斜坡地形的動力效應起主導作用.此外,近岸斜坡地形與岸線的距離以及地形坡度等也會對海岸帶微氣候要素產生影響.
해문응용미국NCAR삼유비정력평형중척도모식MM5연구료근안사파지형대해안대미기후특정적영향,득도료불동위치、불동파도적사파지형조건하해안대미기후요소적일변화과정,병여무지형조건하적정황진행료대비.계산결과표명,재륙지하점면승온적초시계단,사파지형적열력효응기주도작용;재해륙풍발전과정적대부분시간리,사파지형적동력효응기주도작용.차외,근안사파지형여안선적거리이급지형파도등야회대해안대미기후요소산생영향.
The fifth-generation NCAR/Penn State nonhydrostatic dynamics mesoscale model (MM5) was used for the numerical study of the microclimate of the coastal area where an inclined surface is in presence. The main factors representing the coastal microlimate are computed under the conditions of different slope locations and different grades. It is shown that the sea/land breeze has been hastened at the beginning due to the existance of the slope. When the sea/land breeze develops, the slope wakes as a barrier which depresses the surface pressure and reduces the wind velocity. The main factors representing the coastal microlimate are also influenced by the slope location and grades.
