DB43/T 2055-2021 水上交通气象灾害风险预警等级划分预评标准

ICS07.060

CCSA47

43

湖南省地方标准

DB43/T2055—2021

水上交通气象灾害风险预警

等级划分和评判标准

ClassificationandEvaluationCriteriaforEarlyWarning

ofMeteorologicalDisasterRiskinWatorborneTraffic

2021-04-02发布2021-06-02实施

湖南省市场监督管理局发布

DB43/T2055—2021

目次

前言························································································································Ⅲ

1范围·····················································································································1

2规范性引用文件······································································································1

3术语和定义············································································································1

4水上交通气象风险预警等级划分一般规则·····································································2

5水上交通主要气象风险因子及预警等级标准··································································3

5.1风··················································································································3

5.2能见度············································································································3

5.3降雨···············································································································3

5.4降雪···············································································································4

5.5强对流天气······································································································4

5.6冰冻···············································································································4

5.7等级判别·········································································································5

附录A（资料性）········································································································6

表A.1蒲福风力等级表····························································································6

表A.2湖南降雨等级·······························································································7

表A.3湖南降雪等级·······························································································7

I

DB43/T2055—2021

II

DB43/T2055—2021

前言

本文件按照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：湖南省气象服务中心、湖南省水运事务中心

本文件主要起草人：郭海峰、廖春花、罗红梅、熊寄林、杨特群、禹伟、江涤非、贾海鹰、刘祥。

本文件首次发布。

III

DB43/T2055—2021

IV

DB43/T2055—2021

水上交通气象灾害风险预警等级划分和评判标准

1范围

本文件规定了水上交通气象灾害风险预警等级的划分规则和不同预警等级的气象指标判定阈值。

本文件适用于湖南省水上交通气象灾害风险评估与预警。

2规范性引用文件

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/T27962—2011气象灾害预警信号图标

GB/T28591—2012风力等级

GB/T28592—2012降水量等级

GB/T33673—2017水平能见度等级

GB/T34297—2017冰冻天气等级

GB/T21984—2017短期天气预报

QX/T333—2016船舶引航气象条件等级

QX/T416—2018强对流天气等级

3术语和定义

下列术语和定义适用于本文件。

3.1

水上交通watorbornetraffic

船舶在通航水域从事航行、停泊和作业以及与内河交通安全有关的活动。

3.2

气象灾害meteorologicaldisaster

由天气现象对人类的生命财产和国民经济建设及国防建设等造成直接或间接损害的灾害。

3.3

风险预警riskearlywarning

根据研究对象的实际情况及风险管理者的经验，合理划分风险预警区间，判断风险量所处状态。

3.4

阵风gust

一定时段内的最大瞬时风速。

注：单位为米每秒（m/s）。

[QX/T21984—2017，定义2.14]

1

DB43/T2055—2021

3.5

风力等级windscale

根据风对地面（或海面）物体影响程度而定出的等级，用来表示风速的大小。

注：常用的风力等级系英国人蒲福（Beaufort）于1805年拟定，故又称“蒲福风级（Beaufortscale）”，自零到

十二分十三个等级。自1946年以来，风力等级又做了扩充，增加到十八个等级（0-17级）。蒲福风力等级见附录A.1。

[QX/T21984—2017，定义2.15]

3.6

水平能见度visibility

视力正常（眼睛能察觉的最小亮度对比0.05）的人，在当时的天气条件下，能够从天空背景中看

到和辨认的目标物（黑色，大小适度）的最大水平距离；夜间是指中等强度的发光体能被看到和识别的

最大水平距离。

注：单位为米（m）。

[GB/T33673—2017，术语和定义2.1]

3.7

降水量precipitationlevel

某一时段内，从天空降落到地面上的液态（降雨）或固态（降雪）（经融化后）降水，未经蒸发、

渗透、流失而在水平面上积聚的深度。

注：单位为毫米（mm）。

[QX/T21984—2017，定义2.16]

3.8

降水量等级gradofprecipitation

降水量大小的级别标准。

湖南降水量等级见附录A.2-A.3。

[QX/T21984—2017，定义2.17]

3.9

强对流天气Strongconvectiveweather