Impact of extreme high temperature on mortality and regional level definition of heat wave: A multi-city study in China

Gao, Jinghong; Sun, Yunzong; Liu, Qiyong; Zhou, Maigeng; Lu, Yaogui; Li, Liping

doi:10.1016/j.scitotenv.2014.10.028

Cited by 118 publications

(64 citation statements)

References 48 publications

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“…However, the thermal conditions of a typical high-rise residential quarter in Beijing remain largely untouched. A relevant study becomes imperative in the context of worsening of UHI effects and extreme climate events, which has been predicted to increase in number, duration, and frequency with continuous global climate change [25]. …”

Section: Introductionmentioning

confidence: 99%

The Impact of Greenspace on Thermal Comfort in a Residential Quarter of Beijing, China

Kong

Wang

et al. 2016

IJERPH

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With the process of urbanization, a large number of residential quarters, which is the main dwelling form in the urban area of Beijing, have been developed in last three decades to accommodate the rising population. In the context of intensification of urban heat island (UHI), the potential degradation of the thermal environment of residential quarters can give rise to a variety of problems affecting inhabitants’ health. This paper reports the results of a numerical study of the thermal conditions of a residential quarter on a typical summertime day under four greening modification scenarios, characterized by different leaf area density (LAD) profiles. The modelling results demonstrated that vegetation could evidently reduce near-surface air temperature, with the combination of grass and mature trees achieving as much as 1.5 °C of air temperature decrease compared with the non-green scenario. Vegetation can also lead to smaller air temperature fluctuations, which contribute to a more stable microclimate. The Universal Thermal Climate Index (UTCI) was then calculated to represent the variation of thermal environment of the study area. While grass is helpful in improving outdoor thermal comfort, trees are more effective in reducing the duration and expansion of suffering from severe heat stress. The results of this study showed that proper maintenance of vegetation, especially trees, is significant to improving the outdoor thermal environment in the summer season. In consideration of the deficiency of the current code in the management of greenspace in residential areas, we hope the results reported here will help promote the improvement of the code and related regulations for greenspace management.

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Section: Introductionmentioning

confidence: 99%

The Impact of Greenspace on Thermal Comfort in a Residential Quarter of Beijing, China

Kong

Wang

et al. 2016

IJERPH

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“…To date, numerous studies choose all-cause mortality or non-accidental death as the mortality indices without explaining the reasons for choosing this over another when they examine the exposure–response association between temperature and mortality53545556. According to the present study, as the leading cause of accidental mortality in China, only 19.93% RTIs from the studied hospital could be accounted for by weather factors, thus, the real temperature-mortality relationships would be underestimated or even misjudged when the accidental deaths (mainly RTI-related) were considered and all-cause death was set as the mortality indicator to investigate the temperature-mortality association151657.…”

Section: Discussionmentioning

confidence: 92%

The association between meteorological factors and road traffic injuries: a case analysis from Shantou city, China

Gao

Chen

Woodward

et al. 2016

Sci Rep

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Few studies examined the associations of meteorological factors with road traffic injuries (RTIs). The purpose of the present study was to quantify the contributions of meteorological factors to RTI cases treated at a tertiary level hospital in Shantou city, China. A time-series diagram was employed to illustrate the time trends and seasonal variation of RTIs, and correlation analysis and multiple linear regression analysis were conducted to investigate the relationships between meteorological parameters and RTIs. RTIs followed a seasonal pattern as more cases occurred during summer and winter months. RTIs are positively correlated with temperature and sunshine duration, while negatively associated with wind speed. Temperature, sunshine hour and wind speed were included in the final linear model with regression coefficients of 0.65 (t = 2.36, P = 0.019), 2.23 (t = 2.72, P = 0.007) and −27.66 (t = −5.67, P < 0.001), respectively, accounting for 19.93% of the total variation of RTI cases. The findings can help us better understand the associations between meteorological factors and RTIs, and with potential contributions to the development and implementation of regional level evidence-based weather-responsive traffic management system in the future.

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“…Many previous studies have reported that heat effects appeared immediately and lasted for about three days (Anderson and Bell 2009;Guo et al 2011Guo et al , 2014Gao et al 2015), but cold effects were delayed and lasted for about 3 weeks or even longer (Analitis et al 2008;Gasparrini and Armstrong 2013;. Therefore, it is very important to identify a reasonable lag time that captures accurately the magnitude of the cold/heat effect.…”

Section: Identifying Cold/heat Effect Using Alternative Approachesmentioning

confidence: 99%

“…As global warming continues, there is increasing evidence that extreme climatic events are becoming more frequent, more intense, and longer-lasting (Guo et al 2013;Gao et al 2015). Extreme heat events have increased human mortality in North America (IPCC 2014) and Europe (Conti et al 2005;Michelozzi et al 2009;Lass et al 2011;Schuster et al 2014).…”

Section: Introductionmentioning

confidence: 99%

“…This document identifies and characterizes related risks in urban areas, particularly public health risks; the health risks from extreme temperature events are considered an especially important task for climate action planning (NDRC 2016). Existing studies have examined temperature-mortality relationships according to different study objectives; some have focused on a single city (Guo et al 2011;Yang et al 2012;Chen et al 2015), and others have concentrated on special climatic or geographic zones (Curriero et al 2002;Li et al 2014;Gao et al 2015;. But few studies have examined the issue in city clusters.…”

Section: Introductionmentioning

confidence: 99%

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Different Mortality Effects of Extreme Temperature Stress in Three Large City Clusters of Northern and Southern China

Zhang

Wang

et al. 2017

Int J Disaster Risk Sci

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Extreme temperature events have affected Chinese city residents more frequently and intensively since the early 2000s, but few studies have identified the impacts of extreme temperature on mortality in different city clusters of China. This study first used a distributed lag, nonlinear model to estimate the county/district-specific effects of extreme temperature on nonaccidental and cardiovascular mortality. The authors then applied a multivariate meta-analysis to pool the estimated effects in order to derive regional temperature-mortality relationship in three large city clusters-the Beijing-Tianjin-Hebei (BTH) region, the Yangtze River Delta (YRD), and the Pearl River Delta (PRD), which represent northern and southern regions. With 0-3 days' lag, the strongest heat-related mortality effect was observed in the BTH region (with relative risk (RR) of 1.29; 95% confidence interval (CI): 1.13-1.47), followed by the YRD (RR = 1.25; 95% CI: 1.13-1.35) and the PRD (RR = 1.14; 95% CI: 1.01-1.28) areas. With 0-21 days' lag, the cold effect was pronounced in all city clusters, with the highest extreme cold-related mortality risk found in the PRD area (RR = 2.27; 95% CI: 1.63-3.16), followed by the YRD area (RR = 1.85; 95% CI: 1.56-2.20) and BTH region (RR = 1.33; 95% CI: 0.96-1.83). People in the southern regions tended to be more vulnerable to cold stress, but the northern population was more sensitive to heat stress. By examining the effects of extreme temperature in city clusters of different regions, our findings underline the role of adaptation towards heat and cold, which has important implications for public health policy making and practice.

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Impact of extreme high temperature on mortality and regional level definition of heat wave: A multi-city study in China

Cited by 118 publications

References 48 publications

The Impact of Greenspace on Thermal Comfort in a Residential Quarter of Beijing, China

The Impact of Greenspace on Thermal Comfort in a Residential Quarter of Beijing, China

The association between meteorological factors and road traffic injuries: a case analysis from Shantou city, China

Different Mortality Effects of Extreme Temperature Stress in Three Large City Clusters of Northern and Southern China

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