https://hdl.handle.net/10481/14753 2026-04-06T11:35:15Z 2026-04-06T11:35:15Z Herrero, Javier Galván, Laura Fernández de Villarán, Rubén Gulliver Acevedo, Zacarías López Padilla, Sergio Pulido Velázquez, David Rueda Valdivia, Francisco José https://hdl.handle.net/10481/112413 2026-03-24T08:21:25Z

Comparison of a Semi-Distributed Empirical Model and a Distributed Physical Model in a Snow-Covered Mediterranean Catchment under Climate Change Scenarios Herrero, Javier; Galván, Laura; Fernández de Villarán, Rubén; Gulliver Acevedo, Zacarías; López Padilla, Sergio; Pulido Velázquez, David; Rueda Valdivia, Francisco José This research has been supported by Grant TED2021-130744B-C22 funded by MICIU/AEI /10.13039/501100011033 and by the European Union Next GenerationEU/ PRTR

Gulliver Acevedo, Zacarías López Padilla, Sergio Herrero, Javier Collados Lara, Antonio Juan García Valdecasas Ojeda, Matilde María del Valle Ramón Casañas, Cintia Luz Esteban Parra, María Jesús Pulido Velázquez, David Rueda Valdivia, Francisco José https://hdl.handle.net/10481/112412 2026-03-24T08:14:21Z

Long-term water temperature modelling in semi-arid alpine basins Gulliver Acevedo, Zacarías; López Padilla, Sergio; Herrero, Javier; Collados Lara, Antonio Juan; García Valdecasas Ojeda, Matilde María del Valle; Ramón Casañas, Cintia Luz; Esteban Parra, María Jesús; Pulido Velázquez, David; Rueda Valdivia, Francisco José Temperature plays a critical role in the functioning of river ecosystems. Hence, understanding the processes that control water temperature in river networks across daily to multi-year scales is important when trying to manage river thermal regimes. This is particularly urgent in alpine semi-arid basins with substantial human impact, and, especially within the context of global change, where river ecosystem integrity is at risk. A process-based model has been developed to simulate water temperature in lakes and rivers at a regional (watershed) scale. The physically based and fully distributed hydrological model provides comprehensive hydrological and hydraulic simulations of river flow, including contributions from snowmelt, groundwater, and direct runoff at each node of the network. Additionally, the model accounts for the discharge of urban wastewater at its respective nodes. To overcome the computational cost and numerical problems associated with Eulerian methods in long-term simulations, the model uses a semi-Lagrangian approach to discretize the one-dimensional heat conservation equations in river reaches. Reservoir stratification and withdrawal temperatures are simulated with a 1D Lagrangian model (General Lake Model). This methodology ensures the accurate and detailed simulation of water temperature dynamics in rivers by integrating meteorological, hydrological, and hydraulic data, along with the impact of urban wastewater discharges and reservoir outflows. The model is applied to simulate water temperature in a small semi-alpine watershed upstream of the city of Granada that includes two water-supply reservoirs (Canales and Quéntar). Autonomous temperature sensors deployed at different sites are used for model validation. The model is forced with climate databases (reanalysis, regional climate simulation conducted with WRF, and measured data bases) and used in hindcast/forecast exercises to assess the impact of climate change on the thermal regime of inland waters. This research has been supported by the project: STAGES-IPCC (TED2021-130744B-C22) from the Spanish Ministry of Science, Innovation and Universities

Herrero, Javier Gulliver Acevedo, Zacarías Collados Lara, Antonio Juan García Valdecasas Ojeda, Matilde María del Valle Sánchez Membrives, Antonio Ramón Casañas, Cintia Luz Esteban Parra, María Jesús Pulido Velázquez, David Rueda Valdivia, Francisco José https://hdl.handle.net/10481/112409 2026-03-24T08:04:15Z

Assessing Impacts of Climate Change on surface water temperatures in semi-arid alpine basins Herrero, Javier; Gulliver Acevedo, Zacarías; Collados Lara, Antonio Juan; García Valdecasas Ojeda, Matilde María del Valle; Sánchez Membrives, Antonio; Ramón Casañas, Cintia Luz; Esteban Parra, María Jesús; Pulido Velázquez, David; Rueda Valdivia, Francisco José Temperature plays a critical role in the functioning of inland aquatic ecosystems. The metabolic rates of aquatic organisms, their productivity, and, more broadly, the rates of biogeochemical processes are largely determined by water temperature. Hence, understanding the processes that govern temperature in water bodies in response to external factors across daily to multi-year scales is essential. This is particularly urgent in alpine semi-arid basins with substantial human impact and strong influence of snow dynamics, and, especially within the context of global change, where ecosystem integrity is at risk. A process-based model has been developed to simulate water temperature in lakes and rivers at a regional (watershed) scale. The simulation algorithms are tested in the small alpine watershed of the River Genil, upstream of the city of Granada, which includes two water-supply reservoirs (Canales and Quéntar). Urban water demand largely determines withdrawal rates from these reservoirs, thus affecting the thermal dynamics in the water column and downstream reaches. Autonomous temperature sensors have been deployed at different sites and programmed to record hourly data. The model is forced with climate databases (reanalysis, regional climate simulation, and measured data sets) and used in hindcast/forecast exercises to assess the impact of climate change on the thermal regime of inland waters. This research has been supported by Grant TED2021-130744B-C22 funded by MICIU/AEI /10.13039/501100011033 and by the European Union Next Generation.

Pulido Velázquez, David Rueda Valdivia, Francisco José https://hdl.handle.net/10481/108152 2025-11-20T13:44:48Z

INTERNATIONAL WORKSHOP “Co-design of adaptation strategies for a sustainable management of water resources in semi-arid Mediterranean alpine basins. Integrating potential climate change impacts on water quantity and quality (STAGES-IPCC)” Pulido Velázquez, David; Rueda Valdivia, Francisco José Conference Proceedings. Provides a framework to exchange knowledge and experiences about the assessment of historical and future global change scenarios, their impacts on water resource systems and the design of adaptation strategies. This workshop will explore advances in the study of water resource systems in semi-arid Mediterranean alpine basins. Several experts in the field will participate as invited speakers. The workshop is organized in the context of the research project STAGES-IPCC (funded by the Spanish Ministry of Science and Innovation, Spain).

López Padilla, Sergio Ramón Casañas, Cintia Luz Herrero Lantarón, Javier Rueda Valdivia, Francisco José https://hdl.handle.net/10481/108138 2025-11-20T11:14:34Z

Stratification and mixing in Mediterranean reservoirs under seasonal and long-term hydrometeorological variability López Padilla, Sergio; Ramón Casañas, Cintia Luz; Herrero Lantarón, Javier; Rueda Valdivia, Francisco José