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京津冀地区“23·7”特大暴雨精细化特征及成因分析
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Refined characteristics and cause analysis of the “23·7” extraordinary heavy rainfall in Beijing-Tianjin-Hebei region
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图8. 2023年7月30—31日保定(a)和北京(b)假相当位温(等值线,单位:K)和锋生函数(灰色阴影,单位:10-9 K·m-1·s-1 )的时间-高度剖面 |
Fig.8. Time-height cross sections of pseudo-equivalent potential temperature (isolines, Unit: K) and frontogenetic function (the grey shaded, Unit: 10-9 K·m-1·s-1 ) over Baoding (a) and Beijing (b) during 30-31 July 2023 |
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