Anthropogenic heat (QF) is one of the parameters that contributes to the urban heat island (UHI) phenomenon. Usually, this variable is studied holistically, among other anthropogenic flux such as industrial, vehicular, buildings, and human metabolism, due to the complexity of data collection through field measurements. The aim of this paper was to weigh vehicular anthropogenic heat and its impact on the thermal profile of an urban canyon. A total of 108 simulations were carried out, using the ANSYS Fluent ® software, incorporating variables such as the number of vehicles, wind speed, urban canyon orientation, and urban canyon aspect ratio. The results were compared with a database of 61 American cities in 2015 and showed that orientation is the main factor of alteration in vehicular heat flow, increasing it in a range of 2 °C to 6.5 °C, followed by the wind speed (1.2 to 2.2 m/s), which allows for decreases of 1 to 3.8 °C. The exploration of these variables and their weighing in the definition of urban street canyon temperature profiles at the canopy level of urban structures provides valuable information on the hygrothermal comfort of its inhabitants; its appropriate quantification can be an example of many urban energy balances altering processes.

The complexity of the urban environment and its undeniable connection with the energy balance equation opens the doors for researchers to understand phenomena such as the Urban Heat Island (UHI). The least studied factor of the UHI is vehicular anthropogenic heat. Using Computational Fluid Dynamics (CFD) software, the aim is to understand the thermal environment within an urban canyon, based on two variables, the heat produced by the vehicle combustion engine and the orientation of the street (North - South and East -West). The analysis of the correlation of these variables is based on the information obtained from the simulation in different height strata, considering constant values such as direct radiation, diffuse radiation, emissivity and absorptivity of materials and a fixed temperature for the bonnet or hood of the car, altering the number of automotive vehicles and the orientation to examine the different patterns of the thermal profiles. The research opens the way to understand this phenomenon and be considered in simulations for the energy efficiency of buildings, since it directly impacts the facades of buildings and the determination of passive and active cooling techniques.

Con la advertencia del Cambio Climático (CC) y las alteraciones que ha ocasionado en el medio ambiente, se realizan grandes esfuerzos para contrarrestarlo o al menos ralentizarlo; una de las consecuencias indirectas del CC es la Isla de Calor Urbana (ICU), que alude al aumento de la temperatura en las zonas urbanas en relación con las rurales o suburbanas circundantes (Santamouris, et al., 2011), la cual afecta a millones de personas. El objetivo de este artículo es responder a la reflexión sobre ¿Cuánta ponderación tiene la ICU sobre la toma de decisiones en las políticas de planificación urbana de las ciudades en México?, para responder esto, se utiliza una metodología de revisión documental, que incluye el estado del arte de la morfología propia del fenómeno, enumeración de las investigaciones realizadas dentro del territorio mexicano que buscan medir las isotermas de la ICU, una revisión histórica de la introducción de la ICU como indicador de sustentabilidad y resiliencia, y por último, revisión del impacto de las investigación sobre las políticas que se aplican al área urbanística. Podemos concluir, que este estudio es un parteaguas de las futuras investigaciones, pues, aunque la academia ha realizado diferentes estudios en casi todos los estados de la república mexicana abarcando gran variedad de climas, llegan a ser pocas las ciudades analizadas, y dentro de estos parámetros, los resultados se vuelven meramente informativos, careciendo de una vinculación y aplicación metodológica que permita traspasar a la práctica. Lo que nos hace necesario el conocimiento de los efectos de la isla de calor en las ciudades para con ello hacer políticas públicas que entiendan las problemáticas generadas y logren ser parte de los procesos urbanos de las ciudades.

The peripherals illegal settlements in Puebla, have common denominator to born in a situation of urban vulnerability, it means with a lack of infrastructure and basic services and on some occasions on land not suitable for urbanization. This is the case of the Cuitláhuac neighborhood where approximately 400 inhabitants live. The neighborhood only has electricity service, his high urban vulnerability becomes worst in the rainy season with the formation of gullies, flooding sites and soil erosion, affecting the mobility of the inhabitants. Authorities ignore these problems and not always included them in urban development plans. The objective of research is to look for environmental alternatives to reduce urban vulnerability in illegal settlements. The methodology is based on action research and the main techniques were: documentary review, physical and virtual field trips, virtual meetings and semi-directed interviews. A relevant conclusion is that green infrastructure is feasible and can be implemented in the short term and that it arouses much collaborative interest from the inhabitants both for its implementation and for its maintenance.