Warm season nocturnal precipitation in the Great Plains of the United States.
Warm season nocturnal precipitation in the Great Plains of the United States.
复制标题
美国大平原的暖季夜间降水。
DOI：
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发表时间：
1985
期刊：
影响因子：
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通讯作者：
R. Balling
中科院分区：
文献类型：
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作者：
R. Balling
摘要本文确定了美国大平原每小时暖季降水事件的日循环的时空格局。来自515个站的30年每小时降水记录的结果表明，从内布拉斯加州南部到俄克拉荷马州和德克萨斯州北方部分地区，所有暖季降雨量（≥0.25 mm）中有60%以上发生在夜间。较大的降水事件（≥2.54 mm）显示了一个更大的区域，其中60%的暖季降水发生在夜间。谐波分析揭示了一个非常均匀的纵向梯度的最大降雨频率的时间跨越大平原。更精确地识别这些空间和时间模式应该是特别有用的：1）评估美国中部夜间降水的许多理论，2）验证该地区的数值降水模型，3）生成一天中不同时间的降雨预报。
Abstract This paper identifies temporal and spatial patterns in the diurnal cycle of hourly warm season precipitation events over the Great Plains of the United States. Results from 30 years of hourly precipitation records from 515 stations indicate that over 60% of all warm season rainfall (≥0.25 mm) occurs at night from southern Nebraska to panhandle Oklahoma and portions of northern Texas. The larger precipitation events (≥2.54 mm) display a much larger region where 60% of the warm season precipitation occurs at night. Harmonic analysis reveals a remarkably uniform longitudinal gradient in the timing of maximum rainfall frequencies across much of the Great Plains. The more precise identification of these spatial and temporal patterns should be particularly useful in 1) assessing the many theories of nocturnal precipitation in the central United States, 2) verifying numerical precipitation models for the region, and 3) generating rainfall forecasts for various times of the day.