首页|Assessment of the hazard of extreme low-temperature events over China in 2021

Assessment of the hazard of extreme low-temperature events over China in 2021

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  • 国家科技期刊平台
  • NETL
  • NSTL
  • 万方数据
  • 维普
In January 2021,an impressive extreme low-temperature event(ELTE)occurred in China,bringing record-breaking low temperatures to some regions.The comprehensive hazard and the overall situation of ELTEs in the whole of 2021 are still unclear.Accordingly,the overview of ELTEs over the mainland in 2021 and their hazards were systematically reviewed and comprehensively evaluated by using an improved identification and assessment method,which can objectively determine the hazard levels of ELTEs and distinguish spatial differences in the hazard of a single event.A total of 20 ELTEs occurred in 2021;their intensity was remarkably higher than the climatology,while the impacted area and duration were lower than or near the climatology,indicating a normal hazard.In general,the losses of low-temperature related disasters in 2021 were relatively less than the average loss in the past ten years,which is likely related to the low proportion of higher-than-moderately low events in the whole year.ELTEs in 2021 had large impacts on Northwest,North and Northeast China and small impacts on the southeastern Qinghai-Tibet Plateau and western parts of Southwest China.Winter and autumn had a higher-than-normal hazard index for ELTEs due to two high-hazard events in early-to-mid January and early-to-mid November,respectively.These two high-hazard events showed different spatial impacts.The former mainly affected central and eastern parts of China.However,the latter mostly attacked central and western parts of China,especially resulting in high-hazard in parts of Xinjiang.

Extreme low-temperature eventsHazard assessmentChina

Ying-Xian ZHANG、Guo-Fu WANG

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China Meteorological Administration Climate Studies Key Laboratory,Beijing 100081,China

National Climate Center China Meteorological Administration,Beijing 100081,China

National Key Research and Development Programme of China国家自然科学基金China Meteorological Administration Special Foundation for Innovation and Development

2019YFC1510202NSFC41790471CXFZ2022J068

2022

气候变化研究进展(英文版)
国家气候中心

气候变化研究进展(英文版)

CSCDSCI
影响因子：0.806
ISSN：1674-9278
年,卷(期)：2022.13(6)
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