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Identifying predictors of personal exposure to air temperature in peri-urban India

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dc.contributor.author Milà, Carles
dc.contributor.author Curto Tirado, Ariadna, 1987-
dc.contributor.author Dimitrova, Asya, 1988-
dc.contributor.author Sreekanth, Vakacherla
dc.contributor.author Kinra, Sanjay
dc.contributor.author Marshall, Julian D.
dc.contributor.author Tonne, Cathryn
dc.date.accessioned 2023-10-24T07:13:20Z
dc.date.available 2023-10-24T07:13:20Z
dc.date.issued 2020
dc.identifier.citation Milà C, Curto A, Dimitrova A, Sreekanth V, Kinra S, Marshall JD, Tonne C. Identifying predictors of personal exposure to air temperature in peri-urban India. Sci Total Environ. 2020 Mar 10;707:136114. DOI: 10.1016/j.scitotenv.2019.136114
dc.identifier.issn 0048-9697
dc.identifier.uri http://hdl.handle.net/10230/58117
dc.description.abstract Characterizing personal exposure to air temperature is critical to understanding exposure measurement error in epidemiologic studies using fixed-site exposure data and to identify strategies to protect public health. To date, no study evaluating personal air temperature in the general population has been conducted in a low-and-middle income country. We used data from the CHAI study consisting of 50 adults monitored in up to six non-consecutive 24 h sessions in peri-urban south India. We quantified the agreement and association between fixed-site ambient and personal air temperature, and identified predictors of personal air temperature based on housing assessment, self-reported, GPS, remote sensing, and wearable camera data. Mean (SD) daytime (6 am-10 pm) average personal air temperature was 31.2 (2.6) °C and mean nighttime (10 pm-6 am) average temperature was 28.8 (2.8) °C. Agreement between average personal air and fixed-site ambient temperatures was limited, especially at night when personal air temperatures were underestimated by fixed-site temperatures (MBE = -5.6 °C). The proportion of average personal nighttime temperature variability explained by ambient fixed-site temperatures was moderate (R2mar = 0.39); daytime associations were stronger for women (R2mar = 0.51) than for men (R2mar = 0.3). Other predictors of average nighttime personal air temperature included residential altitude, ceiling height, and household income. Predictors of average daytime personal air temperature included roof materials, GPS-tracked altitude, time working in agriculture (for women), and time travelling (for men). No biomass cooking, urban heat island, or greenspace effects were identified. R2mar between ambient fixed-site and personal air temperature indicate that ambient fixed-site temperature is only a moderately useful proxy of personal air temperature in the context of peri-urban India. Our findings suggest that people living in houses at lower altitude, with lower ceiling height and asbestos roofing sheets might be more vulnerable to heat. We also identified households with higher income, women working in agriculture and men with long commutes as disproportionately exposed to high temperatures.
dc.description.sponsorship This research was funded by the European Research Council under ERC Grant Agreement number 336167 for the CHAI Project. Cathryn Tonne was funded through a Ramón y Cajal fellowship (RYC-2015-17402) awarded by the Spanish Ministry of Economy and Competitiveness. None of the funding sources had a role in study design; in the collection, analysis and interpretation of data; in the writing of the report; and in the decision to submit the article for publication.
dc.format.mimetype application/pdf
dc.language.iso eng
dc.publisher Elsevier
dc.relation.ispartof Sci Total Environ. 2020 Mar 10;707:136114
dc.rights © Elsevier http://dx.doi.org/10.1016/j.scitotenv.2019.136114
dc.title Identifying predictors of personal exposure to air temperature in peri-urban India
dc.type info:eu-repo/semantics/article
dc.identifier.doi http://dx.doi.org/10.1016/j.scitotenv.2019.136114
dc.subject.keyword GPS
dc.subject.keyword Greenspace
dc.subject.keyword Heat
dc.subject.keyword Remote sensing
dc.subject.keyword Urban heat island
dc.subject.keyword Wearable camera
dc.relation.projectID info:eu-repo/grantAgreement/EC/FP7/336167
dc.rights.accessRights info:eu-repo/semantics/openAccess
dc.type.version info:eu-repo/semantics/acceptedVersion

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