DB43∕T 2073-2021 降水强度等级(湖南省)

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1、ICS07.060CCSA47□B43湖南省地方标准DB43/T2073—2021降水强度等级GradeclassificationofrainfallintensityDB43/T2073—2021目次前言························································································································Ⅲ1范围···································

2、··················································································12规范性引用文件······································································································13术语与定义·······························································

3、·············································14降水强度分级标准···································································································25降水强度等级指标···································································································

4、2附录A（规范性）降水等级·························································································5参考文献····················································································································6IDB43/T2073—2021IIDB43/T2073—2021前言本文件按

5、照GB/T1.1—2020《标准化工作导则第1部分：标准化文件的结构和起草规则》的规定起草。请注意本文件的某些内容可能涉及专利。本文件的发布机构不承担识别专利的责任。本文件由湖南省气象局提出。本文件由湖南省气象标准化技术委员会归口。本文件起草单位：湖南省气象台。本文件起草人：蔡荣辉、姚蓉、李巧媛、唐佳、苏涛。IIIDB43/T2073—2021IVDB43/T2073—2021降水强度等级1范围本文件规定了24小时降水强度分级标准和降水强度等级指标。本文件适用于气象、地质、水利、农业等相关部门对降水强度的应用和研究。2规

6、范性引用文件下列文件中的内容通过文中的规范性引用而构成本文件必不可少的条款。其中，注日期的引用文件，仅该日期对应的版本适用于本文件；不注日期的引用文件，其最新版本（包括所有的修改单）适用于本文件。GB/T27956—2011中期天气预报GB/T27966—2011灾害性天气预报警报指南GB/T28594—2012临近天气预报GB/T20486—2017江河流域面雨量等级GB/T21984—2017短期天气预报GB/T33669—2017极端降水监测指标DB43/T232—2004天气术语DB43/T835—2013湖南极

7、端降水事件监测方法与判别指标3术语与定义下列术语和定义适用于本文件。3.1降水量precipitation降落在地面上的雨水未经蒸发、渗透和流失而积聚的深度,规定以毫米(mm)为深度单位，本文件仅适用于液态降水。[来源：DB43/T232—2004，2.4.1，有修改]。3.2降水量等级precipitationgrade降水量等级根据一定时间内降水量的大小划分，见附录A。[来源：DB43/T232—2004，2.4.2]3.3短时强降水short-timestrongrainfall指1小时降水量≥20mm的降水。[来

8、源：GB/T28594—2012，2.3]3.4百分位数percentile1DB43/T2073—2021将一组数据按从小到大排序，并计算相应的累计百分位，某一百分位所对应数据的值即为这一百分位的百分位数。[来源：GB/T33669—2017，2.3]3.5极端事件extremeevents统计学中把一组按大小排序