1970—2020年我國(guó)雪災(zāi)的時(shí)空分布特征及其風(fēng)險(xiǎn)評(píng)估區(qū)劃分析

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作者簡(jiǎn)介 朱萬(wàn)林（1995—），安徽六安人，主要從事氣象災(zāi)害過(guò)程監(jiān)測(cè)研究。*通信作者：武于潔（1988—），山西呂梁人，副研究員，主要從事天氣氣候數(shù)值模擬預(yù)測(cè)、遙感監(jiān)測(cè)應(yīng)用等，E-mail：wuyujie@piesat.cn。

收稿日期 2023-08-11

Spatiotemporal Distribution Characteristics and Risk Assessment Zoning Analysis of Snow Disasters in China from 1970 to 2020

Zhu Wan-lin et al（Nanjing Aerospace Hongtu Information Technology Co.， Ltd， NanJing， Jiangsu 210012）

Abstract Analyzed the spatiotemporal distribution characteristics and risk assessment zoning of snow disaster factors in China from 1970 to 2020 based on ERA5 hourly reanalysis data and population economic spatial distribution data. The results show that： （1） In the past 50 years， the factors causing snow disasters in China have shown a significant downward trend; In terms of spatial distribution， it is larger in the Qinghai-Xizang Plateau， northeast and northern Dzungaria， smaller in Central China， and smallest in southern coastal areas of South China， northern China and southern Southern Xinjiang; （2） The areas with high and high snow hazard risk level are mainly located in the Qinghai-Xizang Plateau and northern Dzungaria. The snow hazard risk level in Northeast China is low， and other areas are basically low; （3） The population and economic risks are high risks and high risk levels are mainly located in the eastern part of the Qinghai-Xizang Plateau， the North China Plain and the eastern coastal areas. This article explores the hazards and risks of snow disasters， which can serve as a reference for understanding and understanding China’s snow disasters and their impact on population and economy.

Key words Snow disaster; Disaster causing factors; Number of blizzard days; Maximum snow depth; Accumulated snowfall; Risk assessment zoning

摘要 基于ERA5逐小時(shí)再分析資料和人口經(jīng)濟(jì)空間分布等數(shù)據(jù)，對(duì)1970—2020年我國(guó)雪災(zāi)致災(zāi)因子的時(shí)空特征和風(fēng)險(xiǎn)評(píng)估區(qū)劃結(jié)果進(jìn)行分析。（剩余4104字）