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Urban extent enhances extreme precipitation over the Pearl River Delta, China

机译:城市范围加剧了中国珠江三角洲的极端降水

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The relationship between urban extent and extreme precipitation over the Pearl River Delta in China is evaluated using the Tropical Rainfall Measurement Mission 3B42 precipitation product. The spatial pattern of extreme precipitation indices agrees well with that of the urban extent, with significant and positive spatial correlation between the two. The correlation is stronger for extreme indices at shorter temporal scales than for those at longer temporal scales. For example, the coefficient of correlation with the natural logarithm of urban extent is 0.42 for the maximum consecutive 5‐day precipitation amount and reaches 0.74 for the maximum consecutive 3‐h precipitation amount.
机译:利用热带雨量测量任务3B42的降水量评估了中国珠江三角洲城市范围与极端降水之间的关系。极端降水指数的空间格局与城市范围非常吻合,二者之间存在显着的正相关关系。对于时间尺度较短的极端指标,其相关性强于时间尺度较长的极端指标。例如,最大连续5天降水量与城市自然对数的相关系数为0.42,最大连续3小时降水量与城市对数的相关系数为0.74。

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