Feeling hot is being hot? Comparing the mapping and the surveying paradigm for urban heat vulnerability in Vienna

Seebauer, S., Friesenecker, M., Thaler, T., Schneider, A.E., & Schwarzinger, S. (2024). Feeling hot is being hot? Comparing the mapping and the surveying paradigm for urban heat vulnerability in Vienna. Science of the Total Environment 945 e173952. 10.1016/j.scitotenv.2024.173952.

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With rising global temperatures, cities increasingly need to identify populations or areas that are vulnerable to urban heat waves; however, vulnerability assessments may run into ecological fallacy if data from different scales are misconstrued as equivalent. We assess the heat vulnerability of 1983 residents in Vienna by measuring heat impacts, exposure, sensitivity and adaptive capacity with mirrored indicators in the mapping paradigm (i.e. census tract data referring to the geographic regions where these residents live) and the surveying paradigm (i.e. survey data referring to the residents' individual households). Results obtained in both paradigms diverge substantially: meteorological indicators of hot days and tropical nights are virtually unrelated to self-reported heat strain. Meteorological indicators are explained by mapping indicators (R2 of 15-40 %), but mostly not by surveying indicators. Vice versa, experienced heat stress and subjective heat burden are mostly unassociated with mapping indicators but are partially explained by surveying indicators (R2 of 2-4 %). The results suggest that the two paradigms do not capture the same components of vulnerability; this challenges whether studies conducted in the respective paradigms can complement and cross-validate each other. Policy interventions should first define which heat vulnerability outcome they target and then apply the paradigm that best captures the specific drivers of this outcome.

Item Type: Article
Uncontrolled Keywords: Adaptive behaviour; Environmental justice; Intra-urban vulnerability; Operationalisation; Social vulnerability; Urban heat island
Research Programs: Population and Just Societies (POPJUS)
Population and Just Societies (POPJUS) > Equity and Justice (EQU)
Depositing User: Luke Kirwan
Date Deposited: 24 Jun 2024 07:38
Last Modified: 09 Jul 2024 13:32
URI: https://pure.iiasa.ac.at/19828

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