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WAVE-CISK MODEL OF SQUALL LINES.
被引:0
|作者:
Raymond, David J.
[1
]
机构:
[1] Dept. of Physics & Geophysical Research Center, New Mexico Inst. of Mining & Technology, Socorro, NM 87801, USA.
来源:
|
1946年
/
41期
关键词:
D O I:
暂无
中图分类号:
P4 [大气科学(气象学)];
学科分类号:
0706 ;
070601 ;
摘要:
The wave-CISK model of Raymond incorporating lag effects in the updraft and downdraft is implemented as an initial value problem in physical space. Examples of both midlatitude and tropical squall lines are successfully simulated. Diagnosis of the model shows that condensational heating in the updraft is the primary driving mechanism of a mature squall line, with evaporative cooling and convective momentum transfer playing subsidiary roles. However, an instability involving the displacement of boundary layer air by downdrafts apparently plays an important role in squall line initiation.
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