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Open AccessArticle

Impacts of the Desiccated Lake System on Precipitation in the Basin of Mexico City

1
Centro de Ciencias de la Atmósfera, Universidad Nacional Autónoma de México, Mexico City 04510, Mexico
2
Icelandic Meteorological Office, Bústaðavegur 9, 105 Reykjavík, Iceland
3
Facultad de Ingeniería, Universidad Nacional Autónoma de México, Mexico City 04510, Mexico
*
Author to whom correspondence should be addressed.
Atmosphere 2019, 10(10), 628; https://doi.org/10.3390/atmos10100628
Received: 5 August 2019 / Revised: 11 October 2019 / Accepted: 12 October 2019 / Published: 17 October 2019
(This article belongs to the Special Issue Weather Research and Forecasting (WRF) Model)
Mexico City constitutes one of the largest concentrations of population on the planet and is settled in a valley that, before the 16th century, had a lake system. The lakes were desiccated artificially, and currently, only small lakes remain. The impact of the lake system desiccation on precipitation was studied by performing numerical experiments: with the ancient lake system and without it. The experiments were carried out with the Weather Research and Forecasting (WRF) model coupled with a lake model for two months, using identical initial and boundary conditions, where only the system and lake physics were changed. The mean daily accumulated precipitation reduced when the system was removed. Additionally, the hourly distribution of rainfall changed from a relatively small diurnal variability when there was a lake system to a larger variability with a peak in the afternoon when the system was removed. Extreme precipitation events became more intense in the simulations with lakes. When the lakes were removed, the diurnal temperature range increased, and the boundary layer height became more variable, with a higher daily maximum. The results presented here show that the WRF-Lake model leads to opposite results compared to those with a non-coupled lake. View Full-Text
Keywords: WRF-Lake model; lake–atmosphere interaction; lake desiccation WRF-Lake model; lake–atmosphere interaction; lake desiccation
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López-Espinoza, E.; Ruiz-Angulo, A.; Zavala-Hidalgo, J.; Romero-Centeno, R.; Escamilla-Salazar, J. Impacts of the Desiccated Lake System on Precipitation in the Basin of Mexico City. Atmosphere 2019, 10, 628.

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