Greening Schools for Climate Resilience and Sustainable Co-Design: A Case Study of Thermal Comfort in Coimbra, Portugal

António M. Rochette Cordeiro, Joaquim Fialho, Carolina Coelho and José Miguel Lameiras ()
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António M. Rochette Cordeiro: Faculty of Arts and Humanities, University of Coimbra, 3004-504 Coimbra, Portugal
Joaquim Fialho: Faculty of Arts and Humanities, University of Coimbra, 3004-504 Coimbra, Portugal
Carolina Coelho: Center for Interdisciplinary Studies (CEIS20), 3000-186 Coimbra, Portugal
José Miguel Lameiras: Faculty of Sciences, University of Porto, 4169-007 Porto, Portugal

Land, 2025, vol. 14, issue 10, 1-19

Abstract: Urban school environments often face significant thermal discomfort due to extensive paved surfaces, limited vegetation, and outdated building designs. This study examines how green spaces can mitigate temperature extremes and improve thermal comfort at two secondary schools in Coimbra, Portugal: Escola Secundária José Falcão (ESJF) and Escola Secundária D. Dinis (ESDD). Using a mixed-methods approach that combined school community surveys with on-site microclimatic measurements, we integrated user feedback on comfort with data on temperature and humidity variations across different indoor and outdoor spaces. Results revealed that tree-shaded areas consistently maintained lower air temperatures and higher relative humidity than unshaded zones, which experienced intense heat accumulation—up to a 5 °C difference. At ESJF, the older infrastructure and large asphalt surfaces led to severe heat retention, with east-facing classrooms recording the highest indoor temperatures. ESDD’s pavilion-style layout and existing green spaces provided comparatively better thermal conditions, although insufficient vegetation maintenance and limited shade reduced their effectiveness. The findings demonstrate a clear correspondence between the school community’s perceptions of thermal comfort and the measured microclimatic data. Vegetation—particularly deciduous trees—plays a critical role in cooling the school microclimate through shading and evapotranspiration. Strategic interventions such as expanding tree cover in high-exposure areas, installing green roofs and walls, and carefully selecting species can significantly reduce temperature extremes and improve outdoor usability. In addition, fostering environmental education and participatory co-design programs can encourage sustainable behaviors within the school community, underlining the importance of inclusive, nature-based solutions for climate adaptation. This research highlights that integrating green infrastructure in school design and management is a cost-effective strategy for thermal regulation. Green spaces, when co-designed with community involvement, not only enhance climate resilience and student well-being but also contribute to broader sustainable urban development goals.

Keywords: thermal comfort; green spaces; school environments; urban microclimate; climate adaptation; sustainable design; nature-based solutions (search for similar items in EconPapers)
JEL-codes: Q15 Q2 Q24 Q28 Q5 R14 R52 (search for similar items in EconPapers)
Date: 2025
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