[1]邓悦,李艳萍,卓健,等.2022年桂北“龙舟水”期间融合降水实况产品的真实性检验[J].气象研究与应用,2023,44(01):44-50.[doi:10.19849/j.cnki.CN45-1356/P.2023.1.08]
　Deng Yue,Li Yanping,Zhuo Jian,et al.Authentic assessment of several merged precipitation products process during the dragon-boat precipitation period in northern Guangxi in 2022[J].Journal of Meteorological Research and Application,2023,44(01):44-50.[doi:10.19849/j.cnki.CN45-1356/P.2023.1.08]
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2022年桂北“龙舟水”期间融合降水实况产品的真实性检验()
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气象研究与应用[ISSN:1673-8411/CN:45-1356/P]

卷:
第44卷
期数:
2023年01期
页码:
44-50
栏目:
龙舟水专刊
出版日期:
2023-03-15

文章信息/Info

Title:
Authentic assessment of several merged precipitation products process during the dragon-boat precipitation period in northern Guangxi in 2022
作者:
邓悦;  李艳萍;  卓健;  俸玉端
广西壮族自治区气象信息中心, 南宁 530022
Author(s):
Deng Yue;  Li Yanping;  Zhuo Jian;  Feng Yuduan
Guangxi Meteorological Information Center, Nanning 530022, China
关键词:
实况降水产品; “龙舟水”; 地形因子; 真实性检验
Keywords:
merged precipitation products; dragon-boat precipitation; topographic factors; authentic assessment
分类号:
P426.6
DOI:
10.19849/j.cnki.CN45-1356/P.2023.1.08
摘要:
通过铁路雨量站和迟到报气象站雨量资料设计两次独立检验,并利用数字高程模型计算地形因子,评估2022年桂北"龙舟水"期间实况降水融合产品的性能。结果表明,融合降水实况产品能真实地反映广西陆面降水情况,空间一致性好,能较为准确地捕捉到暴雨中心,三种融合降水实况产品的晴雨检验正确率均超过85%,两次独立检验实况降水值与观测值的相关系数分别超过0.8和0.9,其中短时强降水的相关系数均超过0.5,TS评分保持在0.5以上。坡度越大,实况降水的平均偏差的绝对值越大,短时强降水的负偏差随地形起伏度的增加而增大。此次评估结果表明融合降水实况产品的真实性较好,实际业务中当部分地面自动站资料缺失时,使用融合降水产品代替是一个可行的选择。
Abstract:
Based on the rainfall data from railroad rainfall stations and late-reporting meteorological stations, the performance of the precipitation fusion products during the dragon-boat precipitation period in northern Guangxi in 2022 was evaluated by designing two independent tests and calculating the topographic factor using the Digital Elevation Model (DEM). The result reflect that the merged precipitation products can reflect the land surface precipitation in Guangxi with good spatial consistency, and can capture the rainstorm center more accurately. The rain accuracy of the three merged precipitation products is more than 85%, and the correlation coefficients between the observed precipitation values and the values of the products in the two independent tests are more than 0.8 and 0.9, respectively. The correlation coefficients of short-term heavy precipitation are more than 0.5, and the TS score remains above 0.5 in the two experiments. The greater the slope, the greater the absolute value of the mean error, and the negative deviation of short-term heavy precipitation increases with the increase of topographic relief. The results of this evaluation show that the realism of the fused precipitation products is good, and it is a feasible choice to use several merged precipitation products instead when the data of meteorological stations are missing in some areas.

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备注/Memo

备注/Memo:
收稿日期:2022-11-25。
基金项目:中国气象局创新发展专项子项目(CXFZ2021Z007)、广西气象科研计划项目(桂气科2022QN012)、广西气象数据治理及实况业务创新团队项目
作者简介:邓悦(1995-),女,硕士,工程师,主要从事气象数据分析工作。E-mail:dengyue010203@163.com
通讯作者:李艳萍(1977-),女,正研级高级工程师,主要从事气象信息业务管理工作。E-mail:80085820@qq.com
更新日期/Last Update: 1900-01-01