| Titre : | Variation of daily warm season mortality as a function of micro-urban heat islands. (2009) |
| Auteurs : | SMARGIASSI (A.) : CAN. Institut National de Santé Publique du Québec. Quebec. ; BAUDOUIN (Y.) : CAN. Département de Géographie. Université du Québec à Montréal. Montréal. PQ. ; M. Fournier ; GOLDBERG (M.S.) : CAN. Department of Medicine. McGill University. Montreal. PQ. ; T. KOSATSKY ; C. PLANTE ; Direction de Santé Publique de Montréal. Montréal. PQ. CAN |
| Type de document : | Article |
| Dans : | Journal of epidemiology and community health (vol. 63, n° 8, 2009) |
| Pagination : | 659-664 |
| Langues: | Anglais |
| Mots-clés : | Saison ; Mortalité ; Epidémiologie ; Milieu urbain ; Chaleur ; Ile ; Elément environnement ; Température |
| Résumé : | [BDSP. Notice produite par INIST-CNRS nR0xJrBp. Diffusion soumise à autorisation]. Background : Little attention has been paid to how heat-related health effects vary with the micro-urban variation of outdoor temperatures. This study explored whether people located in micro-urban heat islands are at higher risk of mortality during hot summer days. Methods : Data used included (1) daily mortality for Montreal (Canada) for June-August 1990-2003, (2) daily mean ambient outdoor temperatures at the local international airport and (3) two thermal surface images (Landsat satellites, infrared wavelengths). A city-wide temperature versus daily mortality function was established on the basis of a case-crossover design ; this function was stratified according to the surface temperature at decedents'place of death. Results : The risk of death on warm summer days in areas with higher surface temperatures was greater than in areas with lower surface temperatures. Conclusions : This study suggests that measures aimed at reducing the temperature in micro-urban heat islands (eg, urban greening activities) may reduce the health impact of hot temperatures. Further studies are needed to document the variation of heat-related risks within cities and to evaluate the health benefits of measures aimed at reducing the temperature in micro-urban heat islands. |
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