Abstract: In CDMX, the Urban Heat Island (ICU) reaches intensities of up to 10°C, which influences the local meteorology and aggravates health problems. Through numerical modeling, it has been concluded that one of the main factors of the increase in local temperature was the extinction of Lake Texcoco. However, there are still no studies where a high resolution model (500 m) is used to analyze this phenomenon. Likewise, there is a proposal for partial lake regeneration through a system of lakes in the Federal Zona Federal del ex-Lago de Texcoco (ZFLT) that indicates this system could modulate the local temperature in some areas of the city. Based on the above, the WRF-urban model was used at 500 m resolution with the Local Climatic Zones (LCZ) scheme in order to evaluate more accurately the mitigation through bodies of water of the CDMX’s UHI. Scenarios were generated during the dry season of the current meteorological and urban conditions, and the change in land use based on the aforementioned lake regeneration proposal. Preliminary results show that the presence of the proposed lake system results in a temperature decrease in the surrounding areas of between 0.5°C and 1.5°C.

Keywords: UHI, LCZ, WRF, urban, climate