| 喀什市降水日变化特征分析 |
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| 引用本文： | 赵克明.喀什市降水日变化特征分析[J].新疆气象,2016,10(2):31-35. |
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| 作者姓名： | 赵克明 |
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| 作者单位： | 新疆维吾尔自治区气象台 |
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| 基金项目： | 中国沙漠气象科学研究基金(Sqj2013006),中国沙漠气象科学研究基金(Sqj2012008) |
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| 摘 要： | 利用1994～2013年5～9月喀什市气象站逐小时降水资料，分析喀什近20a降水日变化特征。研究表明，20时至翌日06时为降水量的高值阶段，最大值出现在01时，07时至19时为降水量的低值时段，最小值出现在16时。降水频次的高值区为00时至07时，降水最不易产生的时间为17时。降水强度最高值在20时，次高值为01时，也是累积降水量较大时刻，降水强度最低值出现在15时也是累积降水量的低值区。喀什的降水主要以短时性降水（1～3h）为主，多发生在傍晚至夜间，1h降水频次最多的是量级≤1mm的降水，但1.1mm≤R1≤3.0mm量级的降水贡献率最高。小雨、中雨及大雨降水过程最易发生时段均为前半夜，下午为各量级降水过程发生最少的时段。
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| 关 键 词： | 降水 日变化 雨强 持续时间 喀什 |
| 收稿时间： | 2015/8/20 0:00:00 |
| 修稿时间： | 2015/10/28 0:00:00 |
Characteristic analysis of the diurnal variation of precipitation in Kashgar |
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| zhaokeming.Characteristic analysis of the diurnal variation of precipitation in Kashgar[J].Bimonthly of Xinjiang Meteorology,2016,10(2):31-35. |
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| Authors: | zhaokeming |
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| Institution: | Xinjiang Meteorological Observatory |
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| Abstract: | Based on hourly precipitation data from May to September during 1994-2013 from Kashgar meteorological station, the diurnal variation of rainfall during recent 20 years were analyzed. Results showed that the period from 20:00 to 6:00 the next day was the high value section of the precipitation and the maximum appeared at 1:00 while the period from 7:00 to 19:00 was the low value section of the precipitation and the minimum appeared at 17:00. The precipitation intensity peak appeared at 16:00, and the secondary, also the lager cumulative precipitation, did at 1:00. The valley appeared at 15:00, with the low value of the cumulative precipitation. The short-term precipitation (1~3h) was the mainly precipitation in Kashgar, mainly happened from the evening to the night. The maximum of rainfall frequency in 1 hour was the precipitation less than or equal to 1.0mm, but the contribution of the rainfall frequency greater than or equal to 1.1mm but less than or equal to 3.0mm, was the biggest to the precipitation. The light rain, moderate rain, and heavy rain most easily occurred at the first half of night(21:00~2:00), and it rained least in the afternoon. |
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| Keywords: | rainfall diurnal variation rainfall intensity rainfall duration Kashgar |
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