The associations of cold spells with human mortality in Shanghai, China

IF 6 2区 工程技术 Q1 ENVIRONMENTAL SCIENCES Urban Climate Pub Date : 2024-10-24 DOI:10.1016/j.uclim.2024.102175
Shan Jin , Xing Bi , Caiyan Wu , Bo Fang , Qi Li , Chunfang Wang , Conghe Song , Junxiang Li
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Abstract

Current studies of climate change impacts on human health primarily focus on extreme heat. It is equally imperative to understand the substantial effects of extreme cold on human well-being. We defined 15 distinct cold spells based on various temperature percentiles and durations observed in Shanghai between 2016 and 2020. To estimate the association between cold spells and human mortality, we employed a quasi-Poisson regression with a distributed non-linear model (DLNM). We quantified the mortality burden attributed to cold spells. Our observations showed that the relative risks of cold spells on mortality varied depending on cold spell definitions and sub-population groups. People were more susceptible to cold spells that spanned at least two consecutive days with a daily mean temperature falling below the 5th percentile of temperature records. The prolonged lag effect of cold spells on mortality lasted for two weeks. Cold spells positively associated with total non-accidental deaths and cardiovascular disease. Sub-population groups, including females, the elderly, and individuals with low education, exhibited heightened vulnerability to cold spells compared to their respective counterparts. Our findings are expected to provide guidance for the development of an early warning system aimed at mitigating the adverse impacts of cold spells on human mortality.
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中国上海寒流与人类死亡率的关系
目前关于气候变化对人类健康影响的研究主要集中在极端高温方面。了解极寒对人类健康的实质性影响同样至关重要。我们根据 2016 年至 2020 年期间在上海观测到的不同温度百分位数和持续时间,定义了 15 种不同的寒流。为了估算寒流与人类死亡率之间的关系,我们采用了分布式非线性模型(DLNM)的准泊松回归。我们对寒流造成的死亡负担进行了量化。我们的观察结果表明,寒流对死亡率的相对风险因寒流定义和亚人群而异。如果寒流持续至少两天,且日平均气温低于气温记录的第 5 百分位数,则人们更容易受到寒流的影响。寒流对死亡率的长期滞后影响持续了两周。寒流与非意外死亡总数和心血管疾病呈正相关。与女性、老年人和低学历者等亚群相比,他们更容易受到寒流的影响。我们的研究结果有望为开发预警系统提供指导,从而减轻寒流对人类死亡率的不利影响。
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来源期刊
Urban Climate
Urban Climate Social Sciences-Urban Studies
CiteScore
9.70
自引率
9.40%
发文量
286
期刊介绍: Urban Climate serves the scientific and decision making communities with the publication of research on theory, science and applications relevant to understanding urban climatic conditions and change in relation to their geography and to demographic, socioeconomic, institutional, technological and environmental dynamics and global change. Targeted towards both disciplinary and interdisciplinary audiences, this journal publishes original research papers, comprehensive review articles, book reviews, and short communications on topics including, but not limited to, the following: Urban meteorology and climate[...] Urban environmental pollution[...] Adaptation to global change[...] Urban economic and social issues[...] Research Approaches[...]
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