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Soluciones basadas en materiales pasivos para ciudades frías y "radiantes"

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Las olas de calor récord están afectando cada vez más a las principales ciudades del mundo, incluidas Tokio, Río de Janeiro, Delhi y Hong Kong. Estos eventos de temperaturas extremas ponen de relieve la necesidad urgente de abordar los desafíos climáticos urbanos.

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Área de la Ciencia:

  • Ciencias del medio ambiente
  • Clima urbano
  • Salud pública

Sus antecedentes:

  • Las temperaturas récord son cada vez más frecuentes en las zonas urbanas densamente pobladas de todo el mundo.
  • Las recientes olas de calor en América del Sur, la India y Japón demuestran el creciente impacto del calor extremo.
  • Hong Kong ha experimentado años consecutivos de temperaturas récord de verano.

Objetivo del estudio:

  • Para documentar y analizar los recientes eventos de calor extremo en las principales ciudades del mundo.
  • Para resaltar la creciente frecuencia de temperaturas récord en centros urbanos densamente poblados.
  • Para subrayar la creciente amenaza del calor extremo para las poblaciones urbanas.

Principales métodos:

  • Compilación de datos de los registros de temperatura de Tokio, Río de Janeiro y Delhi.
  • Análisis de las recientes tendencias de las olas de calor en América del Sur, India y Asia Oriental.
  • Observación de las anomalías de temperatura en Hong Kong durante los últimos tres veranos.

Principales resultados:

  • Tokio superó los 35°C en septiembre de 2024, estableciendo un nuevo récord.
  • Río de Janeiro registró un índice de calor de 62,3°C durante una reciente ola de calor.
  • Delhi superó los 50°C en mayo, y Hong Kong ha batido récords de temperatura durante tres veranos consecutivos.

Conclusiones:

  • Los eventos de calor extremo son una preocupación creciente en las ciudades más pobladas del mundo.
  • La frecuencia y la intensidad de las olas de calor urbanas requieren una acción climática urgente y estrategias de adaptación.
  • El seguimiento y la investigación continuos son cruciales para comprender y mitigar los impactos del calor urbano.