Peninsula-Scale Convergence in the South Florida Sea Breeze
Peninsula-Scale Convergence in the South Florida Sea Breeze
复制标题
南佛罗里达海风的半岛规模汇聚
DOI：
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发表时间：
1979
期刊：
影响因子：
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通讯作者：
Robert W. Burpee
中科院分区：
文献类型：
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作者：
Robert W. Burpee
摘要 对佛罗里达州南部半岛尺度辐合的计算表明，降雨量相对较少的海风日的日平均地表辐合量大于大范围降雨日的日平均地表辐合量。地表辐合与区域平均降雨量之间的这种负相关性是由于在降雨量较大的日子里，下午晚些时候和傍晚早些时候地表辐合显着减少而发生的。在降雨量较大的日子里，下午晚些时候海风辐合量的减少显然是由于海风辐合带中形成的深对流产生的下沉气流和雷暴产生的马戏团云层的结果。在海风日深对流典型下午三点左右出现最大值之前，大范围降雨天和小降雨天的地表辐合平均值没有显着差异。然而，在对流层中部观察到了重要的差异，那里的海风......
Abstract Computations of peninsula-scale convergence in southern Florida reveal that daily-averaged surface convergence on sea-breeze days with relatively little rainfall is larger than on days with widespread rain. This negative correlation between surface convergence and area-averaged rainfall occurs as a result of significantly less surface convergence in the late afternoon and early evening on those days with considerable rainfall. The decrease in sea-breeze convergence during the late afternoon of the days with extensive rainfall is apparently a consequence of the downdrafts and thunderstorm-generated circus cloud cover produced by the deep convection that forms in the sea-breeze convergence zones. Before the typical midafternoon maximum of deep convection on sea-breeze days, there is no significant difference between the surface convergence averaged for days with widespread rain and for days with little rain. Important differences are observed, however, in the middle troposphere, where the sea-breez...