2007—2019年山东省短时强降水时空分布特征
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第一作者:赵海军,男,高级工程师,主要从事灾害性天气研究,weazhj@163.com。 通信作者:曹洁,女,副研究员,主要从事中尺度动力学和灾害性天气研究,iamcaojie@126.com。

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国家自然科学基金重点项目(91937301);山东省气象局重点科研项目(2017sdqxz09);山东省气象局预报员专项(SDYBY2018-13)


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Spatial-temporal distribution of short-time severe precipitation in Shandong from 2007 to 2019
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    摘要:

    选用山东 123 个国家级地面气象观测站 2007—2019 年地面逐小时降水资料,分析短时强降水分布特征,主要结论如下:1)其间共有 695 个短时强降水日、3 337 个短时强降水时次和 6 257 个短时强降水样本,基于排序法确定山东省极端短时强降水间值为 71.2 mm • h-1,鲁东南地区间值最高,鲁中地区间值最低。2)各站年均发生 3.9 次短时强降水天气,鲁东南地区短时强降水和极端短时强降水发生频次最多,半岛地区短时强降水发生最少,鲁西南地区极端短时强降水发生最少。3)短时强降水集中出现在 6 月中旬至 8 月下旬,又以 8 月上旬最多。4)日变化显著,呈现典型 “双峰” 特征,主要集中在午后至傍晚,其次是后半夜;6 月中旬至 8 月下旬傍晚和后半夜发生短时强降水的可能性大,需重点关注。

    Abstract:

    Using the hourly precipitation data of national meteorological stations in Shandong from 2007 to 2019, the spatio-temporal distribution characteristics of short-time severe precipitation are analyzed. The results are as follows. There are 695 short-time severe precipitation days, 3 337 short-time severe precipitation hours and 6 257 short-time severe precipitation samples . Based on the sorting method , theextreme short-time severe precipitation threshold is 71.2 mm • h-1. The highest threshold is in southeastern Shandong and the lowest is in central Shandong. The average annual occurrence times of short-time severe precipitation are 3.9. The maximum frequency of short-time severe precipitation is in southeastern Shandong, the minimum is in Shandong peninsula. The maximum frequency of extreme short-time severe precipitation is in southeastern Shandong, the minimum is in southwestern Shandong. Short-time severe precipitation occurs mainly from mid-June to late August, and the most is in early August. The diurnal variation has double peaks, precipitation concentrate in the afternoon to evening, and then in late night. It is necessary to pay attention to the possibility of short-time severe precipitation around the evening and late night from mid-June to late August.

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赵海军 ,曹洁 ,潘玲 ,王庆华 ,曹张驰 ,毛国荣.2007—2019年山东省短时强降水时空分布特征[J].海洋气象学报,2021,41(2):149-155.

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  • 在线发布日期: 2021-09-03
  • 出版日期: 2021-05-31
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