Page 92 - 《高原气象》2022年第5期

5 期 王 钦等：四川盆地两类区域持续性暴雨的环流物理量场特征及成因分析 1185

图7 盆西型和盆东型RPHRs500 hPa位势高度距平场（等值线，单位：gpm）以及
异常风场（矢量，单位：m·s ）的合成图
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2 m·s 以下的风速被省略，黑色点划线为105°E经线，AAC表示反气旋性环流距平，AC表示气旋性环流距平
Fig. 7 The composition of geopotential height（contour，unit：gpm）and wind（vector，unit：m·s ）anomalies
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at 500 hPa before and during Western-type and Eastern-type of RPHRs. The longitudinal line of 105°E is
indicated by dashed line. Wind speed less than 2 m·s is omitted. AAC represents the anticyclonic
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circulation anomaly，while AC represents a cyclonic circulation anomaly