Urbanites' thermal perception in informal settlements of warm-humid Dar es Salaam, Tanzania

Baruti, Modest Maurus; Johansson, Erik

doi:10.1016/j.uclim.2019.100564

Cited by 11 publications

(6 citation statements)

References 43 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…As inferred from the results section, the preferred temperature was found to be 21.99°C. Compared to our findings, the preferred temperature is lower in Tempe (20.8°C) (Middel, Selover, Hagen, & Chhetri, 2016) and higher in Taiwan (23°C) (Lin, 2009), Sydney(30.9 °C) (Spagnolo & de Dear, 2003), and 25.5°C in Dar es Salaam (Baruti & Johansson, 2020).…”

Section: Neutral Temperature Neutral Range and Preferred Temperaturecontrasting

confidence: 99%

Assessing The Thermal Comfort Conditions In Open Spaces: A Transversal Field Survey On The University Campus In India

Kumar

Sharma

2021

Int J. of BES

View full text Add to dashboard Cite

Outdoor thermal comfort (OTC) promotes the usage frequency of public places, recreational activities, and people's wellbeing. Despite the increased interest in OTC research in the past decade, less attention has been paid to OTC research in cold weather, especially in arid regions. The present study investigates the OTC conditions in open spaces at the campus area in the arid region. The study was conducted by using subjective surveys(questionnaire) and onsite monitoring (microclimate parameters). The study was conducted at the Deenbandhu Chhotu Ram University of Science and Technology, Murthal, Haryana-India campus during the cold season of 2019. The timings of surveys were between 9:00 and 17:00 hours. The authors processed the 185 valid questionnaire responses of the respondents to analyze OTC conditions. Only 8.6% of the respondents marked their perceived sensation "Neutral." Regression analysis was applied between respondents' thermal sensations and microclimate parameters to develop the empirical thermal sensation model. The air temperature was the most dominant parameter affecting the sensations of the respondents. The empirical model indicated that by increasing air temperature, relative humidity, and solar radiation, the thermal sensations also increased while wind speed had an opposite effect. Physiological equivalent temperature (PET) was applied for assessing the OTC conditions; the neutral PET range was found to be 18.42-25.37°C with a neutral temperature of 21.89°C. The preferred temperature was 21.99 °C by applying Probit analysis. The study's findings could provide valuable information in designing and planning outdoor spaces for educational institutions in India's arid regions

show abstract

Section: Neutral Temperature Neutral Range and Preferred Temperaturecontrasting

confidence: 99%

Assessing The Thermal Comfort Conditions In Open Spaces: A Transversal Field Survey On The University Campus In India

Kumar

Sharma

2021

Int J. of BES

View full text Add to dashboard Cite

show abstract

“…Recently studies focusing on heat stress in informal settlements have done pioneering work in these communities. Studies by Adegun and Ayoola (2022), Baruti and Johansson (2020) and Bek et al, (2018) analyse heat stress and the urban heat island impacts in informal communities in Nigeria, Tanzania and Egypt, respectively. Informal, unplanned neighbourhoods are noted to be between 1 and 4 8C hotter than adjacent formal neighbourhoods (Bek et al, 2018).…”

Section: Literature Reviewmentioning

confidence: 99%

“…Furthermore, Adegun and Ayoola (2022) find that the urban poor, often in informal settlements, are more vulnerable and affected by higher temperatures due to their limited capacity to acquire active cooling solutions such as air conditioning. Baruti and Johansson (2020) report that inhabitants in Dar es Salaam typically use behavioural heat stress management measures such as congregating in shaded outdoor spaces and using hand fans, yet they note in informal settlements the public space quality is typically poor with limited vegetation and shading.…”

Section: Literature Reviewmentioning

confidence: 99%

Ground-level documentation of heat stress exposure and response strategies in informal settlements in Tshwane, South Africa

Hugo

Sonnendecker²

2023

SASBE

View full text Add to dashboard Cite

PurposeThe adverse impacts of climate change coupled with rapid informal urbanization in the Southern African region are increasing the vulnerability of already sensitive population groups. Consequently, these urban regions are highly vulnerable to urban heat island effects and heatwaves due to exogenous and endogenous factors. While the dynamic interplay between the built environment, climate and response strategies is known, this paper highlights the lived experience of informal settlement residents. It presents work from a project undertaken in Melusi, an informal settlement in Tshwane, South Africa, as a multi-disciplinary project focusing on improving the local resilience to climate change associated heat stress.Design/methodology/approachFollowing a mixed method approach, a semi-structured observational analysis of the spatial layout and material articulation of selected dwellings along with the continuous monitoring and recording of their indoor environments were undertaken.FindingsThe paper presents the research results in terms of the dwelling characteristics, as spatial and material-use strategies and documented heat stress exposure in these structures. The findings highlight that informal dwellings perform poorly in all cases due to endogenous factors and that inhabitants experience extreme heat stress conditions for between 6 and 10 h daily during the peak summer period.Originality/valueCurrently, there are little empirical data on the heat stress residents living in informal settlements in Southern Africa are experiencing. This article provides insight into the indoor environments of informal dwellings and hopes to contribute future guidelines or heat health policies.

show abstract

“…Between 2000 and 2019 climate change-related extreme weather events resulted in a global cost of US$2.56 trillion as well as the loss of 475,000 lives (Eckstein et al 2021). Although highly visible events typically capture public attention, heat stress events are often under-represented (Eckstein et al 2021), with little done to address them (Baruti & Johansson 2020). Yet the impacts of higher temperatures and heat stress exposure present economic costs (Razzak et al 2022), increased negative health implications (Wright et al 2021) and have adverse effects on inhabitants' wellbeing (Chersich et al 2019).…”

Section: Introductionmentioning

confidence: 99%

Heat stress: adaptation measures in South African informal settlements

Hugo

2023

Buildings and Cities

View full text Add to dashboard Cite

Globally extreme weather events are experienced most acutely in cities. While formal settlements can respond to such events, informal settlements are often vulnerable and illprepared. Sub-Saharan Africa is rapidly urbanising with informal settlements that require effective climate change adaptation measures. Two climate adaptation strategies for informal dwellings are considered for their success under 2100 Intergovernmental Panel on Climate Change (IPCC) climate scenarios. Using existing data collected from informal dwellings in South Africa, the findings from a digital simulation study reveal that cool roof paints can currently lower excessive heat stress conditions by 42-63% when applied to high thermal mass dwellings with poorly insulated lightweight corrugated sheeting roofing. However, for the future 2100 climate scenarios this strategy only lowers excessive heat stress conditions by 12-17%. This calls for the development of integrated multifaceted heat stress adaptation strategies for informal settlements in Sub-Saharan Africa. PRACTICE RELEVANCEThis study assessed heat stress conditions and the application of two financially and practically feasible heat stress adaptation strategies in informal dwellings in South Africa. This involved assessing the efficacy of using cool roof paints and improved thermal insulation under current and future climate change-affected conditions. The findings reveal that Southern African informal dwellings experience extreme heat stress 32% of the time. Predicted climate change-affected conditions will increase heat stress exposure up to 40% over a full year. The study reveals that cool roof paints can improve the performance of uninsulated, low thermal mass homes in temperate climates by lowering heat stress conditions by 42-63%, yet this climate change adaptation strategy is only an interim solution with limited success (12-17% improvement) under future 2100 climate change-affected conditions. As a result multilayered integrated heat amelioration strategies are needed in informal communities. 56 Hugo Buildings and Cities

show abstract

Urbanites' thermal perception in informal settlements of warm-humid Dar es Salaam, Tanzania

Cited by 11 publications

References 43 publications

Assessing The Thermal Comfort Conditions In Open Spaces: A Transversal Field Survey On The University Campus In India

Assessing The Thermal Comfort Conditions In Open Spaces: A Transversal Field Survey On The University Campus In India

Ground-level documentation of heat stress exposure and response strategies in informal settlements in Tshwane, South Africa

Heat stress: adaptation measures in South African informal settlements

Contact Info

Product

Resources

About