Modelación del efecto que produce el aumento de la temperatura sobre la capacidad de autodepuración del Río Bermúdez producto del cambio climático mediante el modelo QUAL2KW (2019-2020)
Fecha
2022
Autores
Chavarría García, Bernny José
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Editor
Universidad Nacional, Costa Rica
Resumen
El presente trabajo estudia los posibles efectos o variaciones que pueda presentar el
proceso de autodepuración en la microcuenca del río Bermúdez, debido principalmente al
incremento de temperatura del aire a futuro producto de la influencia del cambio climático y
considerando variables como la carga orgánica y caudales. El impacto de la variabilidad se
midió por medio del modelo ambiental QUAL2KW, tanto en condiciones actuales como para
escenarios de cambio climático a futuro. Para la obtención de los datos necesarios para el
proceso de modelación se realizaron trabajos de campo y tres campañas de muestreos en las
épocas transición lluviosa-seca, época seca y época lluviosa. El escenario actual se evaluó
por medio de datos recolectados durante los años 2019-2020, para los escenarios futuros se
contempló proyecciones de variaciones climatológicas por medio de estudio elaborado por
el Instituto Meteorológico Nacional para el 2050 y 2080, obteniendo modelaciones que
describe el comportamiento y tendencia de los parámetros evaluados. Respecto con el análisis
de los escenarios, presentan un comportamiento muy similar tanto para el escenario actual
como para los escenarios futuros relacionados al cambio climático, en las distintas campañas
evaluadas. Los resultados reflejan una variación poco significativa de comportamiento de los
principales parámetros fisicoquímicos claves para el proceso de autodepuración del río.
The present work studies the possible effects or variations that may occur in the self-purification process in the Bermúdez river the self-purification process in the Bermudez River micro-watershed, mainly due to the future increase in air temperature as a result of future increase in air temperature as a result of the influence of climate change and considering variables such as organic load and flow rates. considering variables such as organic load and flow rates. The impact of variability was The impact of variability was measured using the QUAL2KW environmental model, both under current conditions and for future climate change scenarios. scenarios of future climate change. In order to obtain the data necessary for the modeling process field work and three sampling campaigns were carried out during the rainy-dry transition periods. dry season, dry season and rainy season. The current scenario was evaluated data collected during the years 2019-2020, and for future scenarios, projections of climate variations were projections of climatological variations were contemplated by means of a study elaborated by the National Meteorological Institute for the the National Meteorological Institute for the years 2050 and 2080, obtaining modeling that the behavior and trend of the evaluated parameters. With respect to the analysis analysis of the scenarios, they present a very similar behavior for both the current scenario and the future scenarios related to climate change. scenarios related to climate change, in the different campaigns evaluated. evaluated. The results reflect an insignificant variation in the behavior of the main key physicochemical parameters related to climate change. main physicochemical parameters that are key to the river's self-purification process.
The present work studies the possible effects or variations that may occur in the self-purification process in the Bermúdez river the self-purification process in the Bermudez River micro-watershed, mainly due to the future increase in air temperature as a result of future increase in air temperature as a result of the influence of climate change and considering variables such as organic load and flow rates. considering variables such as organic load and flow rates. The impact of variability was The impact of variability was measured using the QUAL2KW environmental model, both under current conditions and for future climate change scenarios. scenarios of future climate change. In order to obtain the data necessary for the modeling process field work and three sampling campaigns were carried out during the rainy-dry transition periods. dry season, dry season and rainy season. The current scenario was evaluated data collected during the years 2019-2020, and for future scenarios, projections of climate variations were projections of climatological variations were contemplated by means of a study elaborated by the National Meteorological Institute for the the National Meteorological Institute for the years 2050 and 2080, obtaining modeling that the behavior and trend of the evaluated parameters. With respect to the analysis analysis of the scenarios, they present a very similar behavior for both the current scenario and the future scenarios related to climate change. scenarios related to climate change, in the different campaigns evaluated. evaluated. The results reflect an insignificant variation in the behavior of the main key physicochemical parameters related to climate change. main physicochemical parameters that are key to the river's self-purification process.
Descripción
Licenciatura en Ingeniería en Gestión Ambiental con modalidad: Proyecto de graduación
Palabras clave
CIENCIAS AMBIENTALES, ENVIRONMENTAL SCIENCES, MANEJO AMBIENTAL, ENVIRONMENTAL MANAGEMENT, CONTAMINACIÓN DEL AGUA, WATER POLLUTION, EFLUENTES, EFFLUENTS, AGUAS FECALES, FECAL WATERS, RÍOS, RIVERS, CAMBIO CLIMÁTICO, CLIMATE CHANGE, ANÁLISIS DEL AGUA, WATER ANALYSIS