AN OBSERVATIONAL STUDY OF STRONG VERTICAL WIND SHEAR OVER NORTH-AMERICA DURING THE 1983/84 COLD SEASON

被引：0

作者：

GYAKUM, JR ^{[1
]}

CAI, M ^{[1
]}

机构：

[1] UNIV ILLINOIS,DEPT ATMOSPHER SCI,URBANA,IL 61801

来源：

JOURNAL OF APPLIED METEOROLOGY | 1990年 / 29卷 / 09期

关键词：

D O I：

10.1175/1520-0450(1990)029<0902:AOSOSV>2.0.CO;2

中图分类号：

P4 [大气科学（气象学）];

学科分类号：

0706 ; 070601 ;

摘要：

An examination of an exceptionally active five-day period of SWS activity shows a very strong baroclinic zone throughout the United States. The most active region of SWS in the eastern area is located in a zone of cyclonic wind shear downstream of a time-averaged trough. This particular region of SWS is associated with explosive surface cyclogenesis. A study of a corresponding period of exceptionally weak SWS activity reveals a markedly different synoptic pattern in which relatively weak wind maxima and baroclinity are shifted poleward into Canada; significantly weaker surface anticyclones and no explosive cyclogenesis occurs. These results suggest that the phenomenon of SWS can be related to synoptic-scale weather patterns. -from Authors

引用

页码：902 / 915

页数：14

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