The relationship between the near-surface meso-β scale circulation systems and the heavy rainfall events in the sanxia gorge region of the changjiang river. J Appl Meteor Sci, 1991, 2(1): 83-90.
Citation:
The relationship between the near-surface meso-β scale circulation systems and the heavy rainfall events in the sanxia gorge region of the changjiang river. J Appl Meteor Sci, 1991, 2(1): 83-90.
The relationship between the near-surface meso-β scale circulation systems and the heavy rainfall events in the sanxia gorge region of the changjiang river. J Appl Meteor Sci, 1991, 2(1): 83-90.
Citation:
The relationship between the near-surface meso-β scale circulation systems and the heavy rainfall events in the sanxia gorge region of the changjiang river. J Appl Meteor Sci, 1991, 2(1): 83-90.
The Relationship between the Near-surface Meso-β Scale Circulation Systems and the Heavy Rainfall Events in the Sanxia Gorge Region of the Changjiang River
1.
1) (The Meteorological Observatory of the Yichang Prefecture of Hubei Rrovince); 2) (Academy of Meteorological Science, SMA)
In this paper, the heavy rainfall events in the Sanxia Gorge region of the Changjiang River and the southwestern region of Hubei Province during the summers 1983—1987 are analyzed. It is found that about 80% of the events are associated with meso-β scale cyclones are anticyclones with mean diameters of 97 and 114 km respectively. These meso-β scale cyclones are anticyclones are respectively concentrated in different areas essentially without overlapping. The areas are coincided with the meso-β scale cyclones or anticyclones system on the mean surface streamline chart and with the climatological distribution of the rainfall and heavy rainy day in the region. Compared the areas of high frequency of occurrence of the meso-β cyclones and anticyclones with the topographical features, it is demonstrated that the terrain plays a crucial role in producing the meso-β cyclones or anticyclones
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