scholarly journals Heat Stress in Indoor Environments of Scandinavian Urban Areas: A Literature Review

2019 ◽  
Vol 16 (4) ◽  
pp. 560 ◽  
Author(s):  
Karin Lundgren Kownacki ◽  
Chuansi Gao ◽  
Kalev Kuklane ◽  
Aneta Wierzbicka
Keyword(s):  
Heat Stress ◽  
Literature Review ◽  
Urban Areas ◽  
Heat Waves ◽  
Well Being ◽  
Heat Index ◽  
Vulnerable Groups ◽  
Heat Radiation ◽  
Indoor Environments ◽  
Promising Alternative

Climate change increases the risks of heat stress, especially in urban areas where urban heat islands can develop. This literature review aims to describe how severe heat can occur and be identified in urban indoor environments, and what actions can be taken on the local scale. There is a connection between the outdoor and the indoor climate in buildings without air conditioning, but the pathways leading to the development of severe heat levels indoors are complex. These depend, for example, on the type of building, window placement, the residential area’s thermal outdoor conditions, and the residents’ influence and behavior. This review shows that only few studies have focused on the thermal environment indoors during heat waves, despite the fact that people commonly spend most of their time indoors and are likely to experience increased heat stress indoors in the future. Among reviewed studies, it was found that the indoor temperature can reach levels 50% higher in °C than the outdoor temperature, which highlights the importance of assessment and remediation of heat indoors. Further, most Heat-Health Warning Systems (HHWS) are based on the outdoor climate only, which can lead to a misleading interpretation of the health effects and associated solutions. In order to identify severe heat, six factors need to be taken into account, including air temperature, heat radiation, humidity, and air movement as well as the physical activity and the clothes worn by the individual. Heat stress can be identified using a heat index that includes these six factors. This paper presents some examples of practical and easy to use heat indices that are relevant for indoor environments as well as models that can be applied in indoor environments at the city level. However, existing indexes are developed for healthy workers and do not account for vulnerable groups, different uses, and daily variations. As a result, this paper highlights the need for the development of a heat index or the adjustment of current thresholds to apply specifically to indoor environments, its different uses, and vulnerable groups. There are several actions that can be taken to reduce heat indoors and thus improve the health and well-being of the population in urban areas. Examples of effective measures to reduce heat stress indoors include the use of shading devices such as blinds and vegetation as well as personal cooling techniques such as the use of fans and cooling vests. Additionally, the integration of innovative Phase Change Materials (PCM) into facades, roofs, floors, and windows can be a promising alternative once no negative health and environmental effects of PCM can be ensured.

scholarly journals New and Old Indices for Evaluating Heat Stress in an Indoor Environment: Some Considerations. Comment on Kownacki, L.; Gao, C.; Kuklane, K.; Wierzbicka, A. Heat Stress in Indoor Environments of Scandinavian Urban Areas: A Literature Review. Int. J. Environ. Res. Public Health 2019, 16 (4), 560. doi:10.3390/ijerph16040560

2019 ◽  
Vol 16 (8) ◽  
pp. 1444 ◽  
Author(s):  
Francesco Chirico ◽  
Nicola Magnavita
Keyword(s):  
Heat Stress ◽  
Urban Areas ◽  
Heat Index ◽  
Indoor Environments ◽  
Wet Bulb Globe Temperature ◽  
Comfort Index ◽  
Predicted Heat Strain ◽  
Thermal Work ◽  
Globe Temperature ◽  
Heat Indices

In their review, Kownacki et al. showed some practical and easy to use workplace heat indices that are useful for indoor environments, namely the “Wet Bulb Globe Temperature” (WBGT), the “Predicted Heat Strain” (PHS) model, the “Thermal Work Limit” (TWL), the “Equivalent Temperature” (ET) and the thermal comfort index “PMV/PPD”. In this letter, the authors explain why the modified PMV/PPD method together with the indices combining temperature with humidity, such as the “Humidex Index” and the “Heat Index”, could be a more feasible and useful tool for evaluating potential thermal stress in indoor environments for both the occupational and general population.

scholarly journals Addressing migrants’ well-being during COVID-19: An analysis of Chinese communities’ heritage language schools in Germany

2020 ◽  
Author(s):  
Zi Wang
Keyword(s):  
Public Schools ◽  
Urban Areas ◽  
Social Life ◽  
Heritage Language ◽  
Positive Impact ◽  
Information Access ◽  
Well Being ◽  
School Closure ◽  
Vulnerable Groups ◽  
Educational Programmes

Abstract The coronavirus pandemic and the ensuing lockdown affected social life in every regard. In critical times, the well-being of vulnerable groups is often at stake. Migrants represent a case in point because language barriers and the lack of social networks impede their seeking help from public institutions and information access. In migration policy and research, current attention overwhelmingly focusses on COVID-19’s impact on travel restrictions and healthcare. This article contributes a new perspective by demonstrating how migrants’ well-being needs (understood as emotions and sense of achievement) in education during the COVID-19-induced school closure were addressed by community educational organisations. Focussing on the Chinese community in Germany, data were collected in Chinese heritage language (CHL) schools from three urban areas. This article argues that CHL schools’ reaction to public schools’ closure had a positive impact on their members’ well-being. Such organisations achieved this by expanding their educational programmes during and after the lockdown. These measures ensured continuity in migrant children’s education beyond the realm of heritage language instruction, while enabling migrant parents to seek employment as the economy reopened. Overall, the results of this study underscore the potential of community organisations’ educational programmes in maintaining migrants’ well-being, especially in trying times.

scholarly journals Steps Towards Comprehensive Heat Communication in the Frame of a Heat Health Warning System in Slovenia

2020 ◽  
Vol 17 (16) ◽  
pp. 5829
Author(s):  
Tjaša Pogačar ◽  
Zala Žnidaršič ◽  
Lučka Kajfež Bogataj ◽  
Zalika Črepinšek
Keyword(s):  
Public Health ◽  
Heat Stress ◽  
Negative Impact ◽  
Warning System ◽  
Well Being ◽  
Vulnerable Groups ◽  
Public Health Issue ◽  
Mean Values ◽  
Health Warning ◽  
Health Measures

Occupational heat stress has an important negative impact on the well-being, health and productivity of workers and should; therefore, be recognized as a public health issue in Europe. There is no comprehensive heat health warning system in Slovenia combining public health measures with meteorological forecasts. The aim of this research was to provide insight into the development of such a system in Slovenia, turning the communication from the current meteoalarm into a broader system that has more information for different social groups. To achieve this goal, the following steps were used: Analysis of summer temperatures and issued meteoalarms, a survey of the general knowledge about heat among the public, organization and management of two stakeholder symposia, and a final survey on workers’ opinions on heat stress and measures, supplemented by interviews with employers. Summer average daily temperature distributions in Slovenia changed during the investigated period (1961–2019) and the mean values increased over time by 2–3 °C. Additionally, the number of days with fulfilled yellow (potentially dangerous) and especially orange (dangerous) meteoalarm conditions increased significantly after 1990. The survey of the general public about heat stress and warnings showed that efforts to raise awareness of heat issues need to be intensified and that public health measures should effectively target vulnerable groups. Stakeholder symposia and further surveys have shown that awareness and understanding of the negative effects of heat stress on health and productivity are still quite low, so effective ways of disseminating information to different sectors while striking the best balance between efficiency, feasibility and economic cost have to be found.

The heat is on: Observations and trends of heat stress metrics during Florida summers

2022 ◽  
Keyword(s):  
Heat Stress ◽  
Heat Waves ◽  
South Florida ◽  
Heat Index ◽  
Daily Maximum ◽  
Wet Bulb Globe Temperature ◽  
Key West ◽  
Outdoor Work ◽  
Temperature And Humidity ◽  
Globe Temperature

Abstract Extreme heat is annually the deadliest weather hazard in the U.S. and is strongly amplified by climate change. In Florida, summer heat waves have increased in frequency and duration, exacerbating negative human health impacts on a state with a substantial older population and industries (e.g., agriculture) that require frequent outdoor work. However, the combined impacts of temperature and humidity (heat stress) have not been previously investigated. For eight Florida cities, this study constructs summer climatologies and trend analyses (1950–2020) of two heat stress metrics: heat index (HI) and wet bulb globe temperature (WBGT). While both incorporate temperature and humidity, WBGT also includes wind and solar radiation, and is a more comprehensive measure of heat stress on the human body. With minor exceptions, results show increases in average summer daily maximum, mean, and minimum HI and WBGT throughout Florida. Daily minimum HI and WBGT exhibit statistically significant increases at all eight stations, emphasizing a hazardous rise in nighttime heat stress. Corresponding to other recent studies, HI and WBGT increases are largest in coastal subtropical locations in Central and South Florida (i.e., Daytona Beach, Tampa, Miami, Key West), but exhibit no conclusive relationship with urbanization changes. Finally, danger (103–124°F) HI and high (> 88°F) WBGT summer days exhibit significant frequency increases across the state. Especially at coastal locations in the Florida Peninsula and Keys, danger HI and high WBGT days now account for > 20% of total summer days, emphasizing a substantial escalation in heat stress, particularly since 2000.

scholarly journals Heat Waves Occurrence and Outdoor Workers’ Self-assessment of Heat Stress in Slovenia and Greece

2019 ◽  
Vol 16 (4) ◽  
pp. 597 ◽  
Author(s):  
Tjaša Pogačar ◽  
Zala Žnidaršič ◽  
Lučka Kajfež Bogataj ◽  
Andreas Flouris ◽  
Konstantina Poulianiti ◽  
...  
Keyword(s):  
Heat Stress ◽  
Heat Waves ◽  
Negative Impact ◽  
Well Being ◽  
Mitigation Measures ◽  
Self Assessment ◽  
Excessive Sweating ◽  
Outdoor Workers ◽  
Changing Patterns ◽  
Educational Campaigns

Changing patterns of heat waves are part of the global warming effect and the importance of changes is reinforced by their negative impact on society. Firstly, heat waves were analyzed in Brnik (Slovenia) and Larisa (Greece) in the period 1981–2017 to reflect the environment which workers are exposed to. Secondly, outdoor workers (70 from Greece, 216 from Slovenia) provided a self-assessment of heat stress. The heat wave timeline is presented as an effective way of illustrating long-term changes in heat waves’ characteristics for various stakeholders. In both countries, workers assessed as significant the heat stress impact on productivity (Greece 69%, Slovenia 71%; p > 0.05), and in Slovenia also on well-being (74%; p < 0.01). The main experienced symptoms and diseases were thirst (Greece 70%, Slovenia 82%; p = 0.03), excessive sweating (67%, 85%; p = 0.01), exhaustion (51%, 62%; p > 0.05) and headache (44%, 53%; p > 0.05). The most common way to reduce heat stress was drinking more water (Greece 64%, Slovenia 82%; p = 0.001). Among the informed workers, the prevalent source of information was discussions. Therefore, educational campaigns are recommended, together with the testing of the efficiency of mitigation measures that will be proposed on the Heat-Shield project portal.

scholarly journals How to deal with heat stress at an open-air event? Exploring visitors’ vulnerability, risk perception, and adaptive behavior with a multi-method approach

2021 ◽  
Author(s):  
Anna Heidenreich ◽  
Martin Buchner ◽  
Ariane Walz ◽  
Annegret H. Thieken
Keyword(s):  
Heat Stress ◽  
Adaptive Behavior ◽  
Heat Waves ◽  
The Elderly ◽  
Activity Level ◽  
Vulnerable Groups ◽  
Risk Awareness ◽  
Hot Days ◽  
Multi Method Approach ◽  
High Level

AbstractHeat waves are increasingly common in many countries across the globe, and also in Germany, where this study is set. Heat poses severe health risks, especially for vulnerable groups such as the elderly and children. This case study explores visitors’ behavior and perceptions during six weekends in the summer of 2018 at a six-month open-air horticultural show. Data from a face-to-face survey (n = 306) and behavioral observations (n = 2750) were analyzed via correlation analyses, ANOVA, and multiple regression analyses. Differences in weather perception, risk awareness, adaptive behavior, and activity level were observed between rainy days (maximum daily temperature < 25°C), warm summer days (25 - 30°C), and hot days (> 30°C). Respondents reported a high level of heat risk awareness, but most (90 %) were unaware of actual heat warnings. During hot days, more adaptive measures were reported and observed. Older respondents reported taking the highest number of adaptive measures. We observed the highest level of adaptation in children, but they also showed the highest activity level. Based on our results we discuss how to facilitate individual adaptation to heat stress at open-air events by taking the heterogeneity of visitors into account. In order to mitigate negative health outcomes for citizens in the future, we argue for tailored risk communication aimed at vulnerable groups.

scholarly journals Comprehension of climatic and occupational heat stress amongst agricultural advisers and workers in Slovenia

2017 ◽  
Vol 109 (3) ◽  
pp. 545 ◽  
Author(s):  
Tjaša POGAČAR ◽  
Zalika ČREPINŠEK ◽  
Lučka KAJFEŽ BOGATAJ ◽  
Lars NYBO
Keyword(s):  
Heat Stress ◽  
Thermal Comfort ◽  
Climate Changes ◽  
Agricultural Sector ◽  
Heat Waves ◽  
Negative Impact ◽  
Well Being ◽  
Excessive Sweating ◽  
Behavioral Adaptations ◽  
Feasible Solutions

<p>Climate changes and the associated higher frequency of heat waves in Middle-European countries will aggravate occupational heat stress experienced by Slovenian workers. Appropriate behavioral adaptations are important coping strategies and it is pertinent to establish if knowledge among advisers and workers is sufficient and identify the symptoms experienced by workers. Therefore a survey including 230 farmers and 86 agricultural advisers was completed. Thermal comfort ranged from hot to extremely hot for 85 ± 5 % of farmers working outside and heat stress had a negative impact on well-being (74 ± 6 %), productivity (68 ± 6 %) and concentration (34 ± 6 %). Reported symptoms were excessive sweating (84 ± 5 %), thirst (81 ± 5 %), and tiredness (59 ± 6 %). Women had a higher prevalence of headache (64 ± 10 %) compared to males (47 ± 8 %), higher frequency of fatigue (69 ± 10 vs 56 ± 8 %), and incidents with nausea or vomiting (19 ± 8 vs 9 ± 5 %). 81 ± 4 % of the responders reported that more time is required to complete tasks when the weather is hot. Nevertheless, 61 ± 6 % of farmers have never been informed of the impacts of heat stress and 29 ± 10 % of the agricultural advisers does not include this information in their guidance. This emphasizes the need for increased information and implementation of feasible solutions to mitigate the negative impact of heat stress on workers in the agricultural sector.</p>

scholarly journals Climate Change–Related Heat Stress and Subjective Well-Being in Australia

2019 ◽  
Vol 11 (3) ◽  
pp. 505-520 ◽  
Author(s):  
Kerstin K. Zander ◽  
Simon Moss ◽  
Stephen T. Garnett
Keyword(s):  
Climate Change ◽  
Life Satisfaction ◽  
Heat Stress ◽  
Heat Waves ◽  
Productivity Loss ◽  
Climate Change Impacts ◽  
Well Being ◽  
Future Research ◽  
Subjective Well Being ◽  
The Impact

Abstract There is mounting evidence that climate change impacts compromise people’s well-being. Many regions of Australia have experienced record hot temperatures and more frequent and longer heat waves with substantial consequences for people, economies, and ecosystems. Using data from an Australia-wide online survey with 1101 respondents, we investigated the relationship between self-reported measures of heat stress and different dimensions of subjective well-being. After controlling for socioeconomic factors known to affect well-being, we found that heat stress was linked to people’s certainty about and planning for their future but not to their life satisfaction, happiness, social state, capabilities, or purpose in life. This result indicates that, while heat is not associated with present well-being, many people worry about the effect that increased heat will have on their future well-being. People who were uncertain about their future were also more likely than those who did not feel uncertain to think that heat compromised their productivity. People who agreed that they were competent and capable in their activities rated their heat stress–related productivity loss lower than those who disagreed. The findings are relevant for future studies using life-satisfaction approaches to assess consequences of climate change impacts and to studies in “happiness economics.” We recommend that future research on the impact of climate change on well-being go beyond simply life satisfaction and happiness and test multiple dimensions of well-being.

scholarly journals Impact of COVID-19-Related Traffic Slowdown on Urban Heat Characteristics

Atmosphere ◽  
2021 ◽  
Vol 12 (2) ◽  
pp. 243
Author(s):  
Bernardo Teufel ◽  
Laxmi Sushama ◽  
Vincent Poitras ◽  
Tarek Dukhan ◽  
Stéphane Bélair ◽  
...  
Keyword(s):  
Heat Stress ◽  
Surface Temperature ◽  
Urban Areas ◽  
Heavy Traffic ◽  
Urban Climate ◽  
Surface Wind ◽  
Warm Season ◽  
Well Being ◽  
Urban Centre ◽  
Near Surface

Governments around the world have implemented measures to slow down the spread of COVID-19, resulting in a substantial decrease in the usage of motorized transportation. The ensuing decrease in the emission of traffic-related heat and pollutants is expected to impact the environment through various pathways, especially near urban areas, where there is a higher concentration of traffic. In this study, we perform high-resolution urban climate simulations to assess the direct impact of the decrease in traffic-related heat emissions due to COVID-19 on urban temperature characteristics. One simulation spans the January–May 2020 period; two additional simulations spanning the April 2019–May 2020 period, with normal and reduced traffic, are used to assess the impacts throughout the year. These simulations are performed for the city of Montreal, the second largest urban centre in Canada. The mechanisms and main findings of this study are likely to be applicable to most large urban centres around the globe. The results show that an 80% reduction in traffic results in a decrease of up to 1 °C in the near-surface temperature for regions with heavy traffic. The magnitude of the temperature decrease varies substantially with the diurnal traffic cycle and also from day to day, being greatest when the near-surface wind speeds are low and there is a temperature inversion in the surface layer. This reduction in near-surface temperature is reflected by an up to 20% reduction in hot hours (when temperature exceeds 30 °C) during the warm season, thus reducing heat stress for vulnerable populations. No substantial changes occur outside of traffic corridors, indicating that potential reductions in traffic would need to be supplemented by additional measures to reduce urban temperatures and associated heat stress, especially in a warming climate, to ensure human health and well-being.

scholarly journals Climate change and built environment - the role of urban greenery as a mitigation strategy in Greek urban areas

2021 ◽  
Vol 899 (1) ◽  
pp. 012018
Author(s):  
D Apostolopoulou ◽  
S Tsoka
Keyword(s):  
Climate Change ◽  
Thermal Comfort ◽  
Air Temperature ◽  
Urban Areas ◽  
Heat Waves ◽  
Well Being ◽  
Climatic Conditions ◽  
Mitigation Strategy ◽  
Urban Greenery

Abstract Extreme thermal conditions and heat waves, as a result of global warming, have increased in recent years. Especially in the Mediterranean area, cities face higher temperatures during summer months which severely affect thermal comfort and citizens’ well-being. In this context, this study aims to evaluate the role of urban greenery as a mitigation strategy and focuses on its effect towards the improvement of the urban microclimate and thermal comfort under extreme summer conditions. To this aim, a typical square, located in Athens, Greece, has been chosen as a case study. The microclimatic conditions are evaluated for its present state and after an increase of 20% of soil surface and 30% of trees, while both current (i.e., 2020) and future summer climatic conditions (for the year 2060) are examined. It was also proposed that all the soil surfaces would be covered in grass. The potential air temperature, mean radiant temperature and surface temperature are analysed by simulation means, using the ENVI-met microclimate simulation tool. The results of this study showed that increasing the vegetation ratio inside the study area contributes to considerably lower surface temperatures, while a significant reduction on mean radiant and air temperature at the pedestrian level is also achieved, forming better microclimate conditions. Urban greenery is an important factor for healthy and resilient cities. Its presence can provide lower temperatures in the pedestrian level during summer months, reforming the microclimate. The outcomes of this study can be used by urban planners and stakeholders to improve environmentally urban areas, mitigate the results of climate change, and create resilient cities.

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