DB43/T 2833-2023 野外用火风险气象等级

ICS07.060

CCSA47

43

湖南省地方标准

DB43/T2833—2023

野外用火风险气象等级

Wildlandfireriskweatherratings

2023-11-09发布2024-02-09实施

湖南省市场监督管理局发布

DB43/T2833—2023

目次

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

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

2术语和定义············································································································1

3野外用火风险气象等级的确定····················································································1

4野外用火风险气象指数的计算····················································································2

参考文献····················································································································4

I

DB43/T2833—2023

II

DB43/T2833—2023

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：衡阳市气象局。

本文件主要起草人：彭双姿、谢威、彭莉娟、许笛、肖健、肖兰、陈嘉欣、张翔、刘鑫淼。

III

DB43/T2833—2023

IV

DB43/T2833—2023

野外用火风险气象等级

1范围

本文件规定了野外用火风险气象等级的确定及其计算方法。

本文件适用于野外用火风险气象条件的监测、预报和服务。

2术语和定义

下列术语和定义适用于本文件。

2.1

风速windspeed

一般指离地10m单位时间内空气移动的水平距离，以米每秒（m/s）为单位。

2.2

降水量precipitation

某一时段内未蒸发、渗透、流失的降水，在水平面上累积的深度，以毫米（mm）为单位。

2.3

气温airtemperature

标准观测环境百叶箱中离地面1.5m高处的空气温度，以摄氏度（℃）为单位。

2.4

相对湿度relativehumidity

空气中实际水汽压与当时气温下的饱和水汽压之比，反映了空气距饱和空气的程度，以百分数（％）

表示。

2.5

无降水日precipitationfreeday

24h降水量小于0.1mm为一个无降水日。

2.6

野外用火风险气象指数wildlandfireriskweatherindex；WFRI

表征野外用火火灾风险气象综合评价指标。

2.7

野外用火风险气象等级wildlandfireriskweathe